CN1705907A

CN1705907A - Process for producing electrophoresis display device

Info

Publication number: CN1705907A
Application number: CN 200380101758
Authority: CN
Inventors: 武田俊彦
Original assignee: Canon Inc
Current assignee: Canon Inc
Priority date: 2002-10-21
Filing date: 2003-10-20
Publication date: 2005-12-07
Anticipated expiration: 2023-10-20
Also published as: JP4047132B2; JP2004138959A; CN100570458C

Abstract

An electric display device of the type wherein a dispersion liquid (40) comprising at least a dispersion medium and electrophoretic particles (50) is disposed in a space defined by a substrate (10), a partition wall (20) disposed on the substrate, and a sealing film (30) disposed on an upper end portion (90) of the partition wall is produced through a process including a step of disposing a sealing film precursor (120), comprising a polymerizable compound, supported by a supporting member (130) on both an exposed surface of the dispersion liquid and at least a part of the upper end portion (90) of the partition wall (20) in a state that the dispersion liquid is filled between adjacent partition walls, and a step of polymerizing the polymerizable compound to form the sealing film (30).

Description

The manufacture method of electrophoretic display apparatus

Technical field

The present invention relates to a kind of manufacture method that reflects the electric display device of the distribution of electrophoresis particle group under a certain show state.

Background technology

When providing electric field for charged electrophoresis particle in iknsulating liquid, electrophoresis particle is moved under electrophoretic action.In recent years, utilize the electrophoretic display device (EPD) (EPD) of this electrophoresis to obtain development widely.Compare with liquid crystal indicator, EPD has the advantage of storing property, flexible apparatus structure and not needing backlight or polaroid such as height demonstration contrast, non-view angle dependency, show state.

As mentioned above, electrophoresis particle is scattered in the liquid, thereby passes through diffusion etc., and electrophoresis particle is easy to move along the substrate surface direction.This moving causes the display image variation, thereby must limit the zone of action of particulate (electrophoresis particle).A kind of method of restriction particulate zone of action is to be used for forming numerous small hollow spaces on the substrate of device, and restriction electrophoresis particle and iknsulating liquid.If realize this restriction fully, then the particle moving area can be restricted to the small hollow space that wherein limits electrophoresis particle.

In Japanese unexamined publication application No.2000-342672 (for example Figure 26), propose this method, wherein in hollow space, produced the state of restriction electrophoresis particle, iknsulating liquid etc.Particle method for limiting according to this day disclosure (not examining) at first, forms the next door, thereby defines a plurality of unit on substrate.In each defined unit, fill the liquefied mixture (dispersion system) that comprises electrophoresis particle by ink ejecting method.On dispersion system, adopt encapsulant, and be solidified into and a kind of dispersion system be limited to wherein state.Afterwards, will have the curing encapsulant that is provided with on the substrate in next door and be bonded to each other, form display device with relative substrate.

In addition, the disclosure has also disclosed and a kind ofly by ink ejecting method the potpourri of dispersion system and encapsulant has been filled in method in each unit this day.In this case, if the proportion of encapsulant less than the proportion of dispersion system, and they are immiscible each other, then encapsulant and dispersion system each other (mutually) separate.As a result, finally produce a kind of like this state of formation encapsulant on dispersion system.In this state, encapsulant solidify to form the state of restriction dispersion system.Afterwards, the curing encapsulant that is provided with on the septate substrate of formation is bonded to each other with relative substrate, forms display device.

But the manufacture method of this day disclosure (JP2000-343672) may produce following problem.

At first, existence is difficult to use with the problem of (methyl) acrylic ester monomer as ultraviolet ray (UV) polymeric material of representative.These materials can be used as makes the display device that is produced have the starting material of the required soft sealing membrane of flexibility.In addition, these material cheapnesss, thereby the cost of reduction display device.Above-mentioned UV polymeric material is the polymerization by the Raolical polymerizable that is subjected to the oxygen inhibition usually.Thereby, under being exposed to the state of surrounding air, encapsulant carries out in the situation of encapsulant polymerization, described in this day disclosure, be difficult to utilize the UV polymeric material.If use these materials, then need from the polymerization environment, to remove the special curing apparatus of oxygen.

The second, exist encapsulant proportion to be restricted, thereby dwindle the problem of the range of choice of diaphragm seal material.In this day disclosure, require the proportion of the proportion of encapsulant less than dispersion system.For example, if through being commonly used for the isoalkane kind solvent of dispersion medium, the proportion that then requires encapsulant is less than 1.But the proportion of most of curable materials is greater than 1.For this reason, the range of choice of material diminishes.

The 3rd, there is the problem that is difficult on wide region, evenly be provided with encapsulant.This is attributable to be exposed to the generation of unevenness of the sealing material layer of surrounding air.Droplet (formation) phenomenon that a reason that produces unevenness is an encapsulant.Usually be difficult to avoid taking place unevenness.In addition, in large scale device more, the generation of unevenness is more remarkable.

Summary of the invention

One object of the present invention is to provide the manufacture method of the electric display device that a kind of the problems referred to above are resolved.

Specific purposes of the present invention are, use the starting material of the UV polymerizable compound of polymerization as diaphragm seal by Raolical polymerizable, need not limit the proportion of polymerizable compound, a kind of manufacture method that can form the electric display device of cheap and soft sealing membrane is provided.

According to first aspect present invention, a kind of manufacture method of electric display device is provided, in this electricity display device, at least the dispersion liquid that comprises dispersion medium and electrophoresis particle is arranged at by substrate, is arranged on the next door on this substrate and is arranged in the space that the diaphragm seal on the upper end in next door limits, and this method comprises:

Under dispersion liquid is filled in state between the adjacent next door, at least a portion upper end on the exposed surface of dispersion liquid and next door, the step of the diaphragm seal parent that comprises polymerizable compound, supported by support component is set, and

The polymerization polymerizable compound is to form the step of diaphragm seal.

According to second aspect present invention, a kind of manufacture method of electric display device is provided, in this electricity display device, at least the dispersion liquid that comprises dispersion medium and electrophoresis particle be arranged at by substrate, be arranged on this substrate and thereon the place, end be provided with the next door of bonding film and be arranged in the space that the diaphragm seal on the upper end in next door limits, this method comprises:

The step of the bonding film parent that comprises polymerizable compound is set on the upper end of next door,

At the exposed surface of dispersion liquid be in the step that the diaphragm seal parent that comprises polymerizable compound is set on the surface of bonding film of next door upper end at least, and

Under bonding film parent and diaphragm seal parent state of contact, with the polymerizable compound polymerization so that the step that diaphragm seal and bonding film become one.

By using manufacturing method according to the invention, a kind of electric display device with cheap and soft sealing film can be provided, the proportion of sealing film and polymerizable compound is irrelevant.In addition, can also guarantee to have good cementability between diaphragm seal and the next door.

By below in conjunction with the description of accompanying drawing to the preferred embodiment of the invention, these and other purposes of the present invention, feature and advantage will be more apparent.

Description of drawings

Constructed profile shown in Figure 1 illustrates an embodiment of the electric display device that produces by method of the present invention.

Fig. 2 is the amplification profile of Fig. 1 display device.

Schematic view illustrating shown in Fig. 3,4 and 5 is according to the manufacture method of display device of the present invention.

Fig. 6,7,8 and 9 is the amplification profile of display device, near the part in expression next door 20.

The manufacture method of constructed profile explanation display device of the present invention shown in Figure 10.

Figure 11 and 12 is respectively the constructed profile of another embodiment of the electric display device that explanation produces by method of the present invention.

Figure 13,14,15,16 and 17 is respectively the amplification profile of display device, near the part in expression next door 20.

Constructed profile shown in Figure 180 illustrates another embodiment of the electric display device that produces by method of the present invention.

The manufacture method of the constructed profile explanation display device of the present invention shown in Figure 19～28.

Constructed profile shown in Figure 29 illustrates another embodiment of the electric display device that produces by method of the present invention.

Embodiment

Below, with the manufacture method of describing in more detail according to electric display device of the present invention.

Manufacture method according to first aspect present invention comprises:

A kind of manufacture method of electric display device, in this electricity display device, at least the dispersion liquid that comprises dispersion medium and electrophoresis particle is arranged at by substrate, be arranged on the next door on this substrate, and be arranged in the space that the diaphragm seal on the upper end in next door limits, wherein be filled in a kind of like this state between the adjacent next door at dispersion liquid, the diaphragm seal parent that promptly comprises polymerizable compound contacts with the exposed surface of dispersion liquid and at least a portion upper end in next door, and under the state of diaphragm seal parent by the flat seal member supports, by with the polymerizable compound polymerization, form diaphragm seal.

According to the manufacture method of first aspect present invention, can comprise that following specific embodiments (a) arrives (1):

(a) support component has a surface that has compatibility for the diaphragm seal parent,

(b) dispersion liquid and diaphragm seal parent are immiscible each other,

(c) polymerizable compound is a photopolymerization compounds,

(d) photopolymerization compounds comprises photo polymerization monomer or oligomer,

(e) photo polymerization monomer is 1,4-butanediol diglycidyl ether diacrylate,

(f) the photopolymerization oligomer is polytetramethylene ether glycol=two (2-maleimide acetates),

(g) photo polymerization monomer is a fluorinated acrylate,

(h) photo polymerization monomer or oligomer comprise two kinds of monomers or oligomer at least, and one of them is a fluorinated acrylate at least,

(i) photo polymerization monomer or oligomer comprise two kinds of monomers or oligomer at least, and one of them is polytetramethylene ether glycol=two (2-maleimide acetates) at least,

(j) after finishing polymerization, remove support component from diaphragm seal,

(k) on diaphragm seal, after removing support component, another film is set, and

(l) support component and diaphragm seal are transparent.

The manufacture method that comprises a kind of electric display device according to the manufacture method of second aspect present invention, in this electricity display device, the dispersion liquid that comprises dispersion medium and electrophoresis particle at least be arranged at by substrate, be arranged on this substrate and thereon the place, end be provided with the next door of bonding film and be arranged in the space that the diaphragm seal on the upper end in next door limits; Wherein form diaphragm seal by diaphragm seal parent that will comprise polymerizable compound and the bonding film parent polymerization that comprises polymerizable compound; Bonding film parent terrain is set on the upper end at least of next door; And at the exposed surface of diaphragm seal parent terrain contact dispersion liquid with carry out polymerization under the state of this layer diaphragm seal parent at least, wherein dispersion liquid is filled between the adjacent next door.

Manufacture method according to second aspect present invention can comprise that following specific embodiments (a) arrives (t):

(a) polymerizable compound has and is selected from-O--CH ₂-O-,-OH and-CF ₂-at least one group;

(b) polymerizable compound has polyethylene glycol structures,

(c) polymerizable compound is a photopolymerization compounds,

(d) photo polymerization monomer is 1,4-butanediol diglycidyl ether diacrylate,

(e) next door comprises the polymkeric substance of polymerizable compound,

(f) photo polymerization monomer is a fluorinated acrylate,

(g) photo polymerization monomer or oligomer comprise at least two kinds of monomers or oligomer, and one of them is a fluorinated acrylate at least,

(h) photo polymerization monomer or oligomer comprise at least two kinds of monomers or oligomer, and one of them is polytetramethylene ether glycol=two (2-maleimide acetates) at least,

(i) dispersion liquid and diaphragm seal parent are immiscible each other,

(j) before polymerization, bonding film parent terrain is arranged on the upper end in next door at least,

(k) by this polymerizable compound being transferred on the upper end in next door, bonding film parent terrain is set from the substrate that applies polymerizable compound,

(k) apply polymerizable compound by forming on the septate substrate surface in the above, bonding film parent terrain be arranged on the next door,

(m) next door comprises the polymkeric substance of polymerizable compound,

(n) under the state of bonding film parent terrain, carry out polymerization by the planar support member supports,

(o) after polymerization, remove support component,

(p) by will containing on the exposed surface and bonding film parent terrain that the volatilization liquid that has wherein dissolved polymerizable compound is ejected into dispersion liquid, and make the volatilization of volatilization liquid, form the diaphragm seal parent terrain,

(q) by on the exposed surface and bonding film parent terrain that the diaphragm seal parent are coated to dispersion liquid, form the diaphragm seal parent terrain,

(r) the diaphragm seal parent terrain comprise two-layer,

(s) form the one deck that constitutes in diaphragm seal parent terrain two-layer by applying polymerizable compound, and

(t) constitute the one deck that contacts with the dispersion liquid exposed surface in diaphragm seal parent terrain two-layer, comprise the polymkeric substance of employed polymerizable compound in (s).

(1) below, specifically describes embodiment with reference to the accompanying drawings according to the manufacture method of first aspect present invention.

Fig. 1 is the constructed profile of the display device that produces by first embodiment according to the manufacture method of first aspect present invention.

With reference to Fig. 1, this display device comprises substrate 10, be arranged to around and limit pixel next door 20, diaphragm seal 30, dispersion medium 40, electrophoresis compound 50, be arranged on each pixel place first electrode 70, be arranged on second electrode at each pixel place and the switchgear 80 that is provided with respect to each pixel, as TFT (thin film transistor (TFT)).As can be seen from Figure 1, omit other structural details of display device, as be used between electrode, applying the electric signal bringing device of electric signal.

By the display device that manufacture method of the present invention produces, reflect the distribution of electrophoresis particle 50 under show state.

More specifically, in the zone that A represents, express electrophoresis particle 50 and accumulate in a kind of distribution on 20 sides, next door.When from diaphragm seal 30 unilateral observations of display device zone A, if the surface of first electrode 60 be white, then regional A appears as white.On the other hand, in the represented zone of B, express a kind of distribution that electrophoresis particle 50 disperses along the substrate surface direction.When from diaphragm seal 30 unilateral observation area B, area B seems to present the color (being black in the present embodiment) of electrophoresis particle 50.

In order to change show state, electrophoresis particle 50 moves on substrate so that change distribution.For example, can electrophoresis moves and electrophoretic blotting particle 50 by apply electric signal between first and second electrode.When in the present invention, specifically restriction changes show state required on substrate the method for mobile electrophoresis particle.For example, utilize the dielectric migration force of dispersion medium or electrofluid to flow, electrophoresis particle is moved on substrate.

In the superincumbent description, the color of electrophoresis particle is a black, and the color of first electrode surface is white, but is not limited thereto.For example, suitably become redness, green, blueness etc., can realize colored the demonstration by color with first electrode surface.

In Fig. 1, electrode system (structure) is arranged on substrate 10 1 sides.The electric field that electrode system produces makes electrophoresis particle take place greatly to move along the in-plane of diaphragm seal.But, in the present invention,, can also adopt to make electrophoresis particle greatly mobile electrode structure take place along the vertical direction of diaphragm seal as long as can produce required show state.

Diaphragm seal 30 shown in Fig. 1 has a kind of like this cross-section structure (shape), makes it towards the substrate side bending, but also can have planar structure or towards the structure of the direction bending opposite with substrate, as expressing respectively in Fig. 7 and 9.

Diaphragm seal bonds at least a portion upper end in next door just enough, but preferred diaphragm seal bonds on the whole upper end face in next door, as shown in for example Fig. 6,7 and 9, more preferably not only bond on the whole surface of upper end, next door, as shown in for example Fig. 2 and 8.This is because when the bond area in diaphragm seal and next door became big, it is big that the cementability between diaphragm seal and the next door also becomes.Fig. 2 schematically expresses a kind of like this state, bonds on the upper end 90 and a part of

sidepiece

100 and 110 in next door 20 towards the diaphragm seal of substrate 10 1 lateral bending songs.

Below, with reference to the embodiment of the manufacture method of display device shown in the process drawing key diagram 1 of Fig. 3-5.

＜step 1 〉

Fig. 3 schematically represents step 1, and step 1 is until a step that forms next door 20.

At first, on substrate 10, form switchgear 80, cover with insulation course then.In insulation course, form contact hole 160.Afterwards, on insulation course, be formed for the resist pattern of scatter incident light, and on the resist pattern, form (for example having the aluminium of high light reflectivity rate) first electrode 60, so that link to each other with switchgear 80 by contact hole 160.If first electrode 60 has the high light reflectivity rate, then it can also be as light reflect/scatter layer.

Cover first electrode 60 with the insulation light scattering layer.On light scattering layer, form second electrode 70 and next door 20.Can form the next door by any method, as long as can form required next door.For example, can form the next door by known photoetching process.

After forming the next door, can cover the insulation light scattering layer that is arranged on first electrode and the surface of second electrode.

＜step 2 〉

Fig. 4 schematically represents step 2, and step 2 is carried out a step of polymerization state before for being arranged on the desired location place until producing by the diaphragm seal parent terrain that will comprise polymerizable compound to the diaphragm seal parent.

Under this state, the diaphragm seal parent terrain 120 that comprises polymerizable compound is set at and is used to support between the support component 130 and substrate 10 of diaphragm seal parent terrain 120, in that electrophoresis particle 50 and dispersion medium 40 are arranged between the adjacent next door 20 at least on the substrate 10.

In addition, in the present embodiment, diaphragm seal parent terrain 120 and be filled in the exposed surface 140 of the dispersion medium between the adjacent next door 20, and at least a portion upper end 90 in next door 20 contacts.

As mentioned above, in the present embodiment, the diaphragm seal parent terrain 120 that comprises polymerizable compound is supported by support component 130, thereby even the proportion of diaphragm seal parent greater than the proportion of dispersion medium, the diaphragm seal parent also can not sink to the bottom of dispersion medium layer.In other words, the proportion to the diaphragm seal parent does not add restriction.In addition, because diaphragm seal parent terrain 120 is supported by support component, it does not directly contact surrounding air, thereby can use the polymerizable compound of the UV polymeric material of the polymerization by free radical polymerization as formation diaphragm seal parent.In addition, can avoid forming droplet, thereby for example can on large tracts of land, keep the thickness of diaphragm seal even.

If realize the said structure of each element, then the method to set up for diaphragm seal parent, dispersion medium etc. does not add restriction.For example, after the potpourri that comprises dispersion medium and electrophoresis particle (dispersion liquid) is filled between the adjacent next door, can on the septate substrate of formation, form the support component that is provided with the diaphragm seal parent terrain.Perhaps, after electrophoresis particle being arranged between the adjacent next door, be oppositely arranged the support component that is provided with the diaphragm seal parent terrain, have predetermined interval between them, and inject dispersion medium at interval by this with forming septate substrate.Afterwards, support component and the septate substrate of formation can be compressed.

＜step 3 〉

Figure 4 and 5 are schematically represented step 3, and step 3 is diaphragm seal parents that polymerization constitutes diaphragm seal parent terrain 120, until the step that forms diaphragm seal.

The polymerization of diaphragm seal parent is characterised in that it is to carry out, as shown in Figure 4 under the state that diaphragm seal parent terrain 120 is supported by support component 130.By carrying out polymerization in this state, form diaphragm seal 30 as shown in Figure 5.

Can be according to the kind and the character selective polymerization method of the polymerizable compound that constitutes the diaphragm seal parent.For example, if polymerizable compound is the UV polymeric material, then can carry out polymerization by the UV radiation.

Can also remove support component 130 as required.In the case, form the display device shown in Fig. 1.After removing support component 130, can on diaphragm seal, form another film.

In the superincumbent description, omitted and being connected and other steps of electric signal bringing device.

(2) below, with reference to Figure 12-18, with an embodiment that specifically describes according to the manufacture method of second aspect present invention.

Schematic cross sectional view shown in Figure 12 is represented an embodiment of the display device that the manufacture method by the present embodiment produces.

With reference to Figure 12, this display device comprises substrate 10, be arranged to around and limit the next door 20 of pixel, diaphragm seal 30, dispersion medium 40, electrophoresis compound 50, first electrode 70 that is arranged on each pixel place that forms by the diaphragm seal parent polymerization that will comprise polymerizable compound as described below, second electrode that is arranged on each pixel place, the switchgear 80 that is provided with respect to each pixel is as TFT (thin film transistor (TFT)), and the bonding film 90 that is used to strengthen cementability between next door 20 and the diaphragm seal 30.Before polymerization, the bonding film parent polymerization that comprises polymerizable compound by on the upper end that will be arranged on next door 20 forms bonding film.In polymerization process, bonding film and diaphragm seal are connected to each other and are bonding.As can be seen from Figure 12, omit other structural details of display device, as be used between electrode, applying the electric signal bringing device of electric signal.

By the display device that this manufacture method of the present invention produces, reflect the distribution of electrophoresis particle 50 under show state.

More specifically, in Figure 12, shown in the A in the zone, express a kind of distribution that electrophoresis particle 50 accumulates in 20 sides, next door.When from diaphragm seal 30 unilateral observations of display device zone A, if the surface of first electrode 60 be white, then regional A appears as white.On the other hand, in the zone in Figure 12 shown in the B, express a kind of distribution that electrophoresis particle 50 disperses along the substrate surface direction.When from diaphragm seal 30 unilateral observation area B, area B seems to present the color of electrophoresis particle 50.

The method that changes show state is identical with method according to the embodiment of first aspect present invention.

In Figure 12, electrode system (structure) is arranged on substrate 10 1 sides.The electric field that electrode system produced makes electrophoresis particle take place greatly mobile along the in-plane of diaphragm seal.But, in the present embodiment, can also adopt to make electrophoresis particle greatly mobile electrode structure take place, as long as produce required show state along the vertical direction of diaphragm seal.

Diaphragm seal 30 shown in Figure 12 has a kind of like this cross-section structure (shape), and it is towards the substrate side bending, but also can have planar structure or towards the structure of an opposite lateral bending song with substrate, as expressing respectively in Figure 15 and 16.

Diaphragm seal bonds at least a portion upper end in next door just enough, but preferred diaphragm seal bonds on the whole surface of upper end, next door, as shown in for example Figure 14,15 and 17, more preferably not only bond on the whole surface of upper end, next door, as shown in for example Figure 13 and 16.This is because when the bond area in diaphragm seal and next door became big, it is big that the cementability between diaphragm seal and the next door also becomes.Figure 13 schematically expresses a kind of like this state, bonds on the upper end 90 and a part of

sidepiece

In the present embodiment, before polymerization, the upper end in next door is made of bonding film parent terrain at least.In Figure 12-17, only the upper end is made of bonding film parent terrain.But, in the present embodiment, polymerizable compound not only can be arranged on the upper end, but also can be arranged on the whole surface of next door sidepiece, forms bonding film 90 by polymerization subsequently, as shown in Figure 18.

Next, an embodiment of the manufacture method of display device shown in Figure 12 is described with reference to the process drawing of Figure 19-26.

＜step 1 〉

Figure 19 is description of step 1 schematically, and step 1 is until the step that forms next door 20.

＜step 2 〉

Figure 20-22 is description of step 2 schematically, and step 2 is for comprising the step of the bonding film parent terrain of polymerizable particle until the upper end setting of next door at least.

The polymerizable compound that uses in this step is preferably identical with the parent that constitutes diaphragm seal described below.

To the object lesson of this step be described.

At first, apply the substrate of polymerizable compound above the preparation.The upper end in the next door of preparation contacts in the coating surface that makes substrate and the step 1, as shown in Figure 20.With reference to Figure 20, Reference numeral 190 expressions are coated in the polymerizable compound on the substrate 180.Afterwards, 20 remove substrates 180 from the next door, thereby polymerizable compound 190 is transferred to the upper end in next door 20 from substrate 180, as shown in Figure 21.With reference to Figure 21, the bonding film parent terrain that comprises polymerizable compound that Reference numeral 200 is represented on the upper end that is transferred to next door 20.

In the present embodiment, polymerizable compound 200 can also be arranged on the whole surface of sidepiece in next door 20 and upper end, as shown in Figure 22.Can carry out the setting of polymerizable compound by for example applying or adsorbing polymerizable compound.

In the situation that next door is formed by the polymerizable compound that constitutes the diaphragm seal parent, polymerizable compound has been arranged on the upper end in next door, thus can omit above-mentioned setting or as required (by for example shifting or applying) polymerizable compound is set.

The preferred counter septum of polymerizable compound has compatibility.This is owing to the upper end that not only polymerizable compound is arranged on the next door is carried out easily, but also because after the polymerizable compound polymerization, the polymkeric substance of polymerizable compound and the good reason of the cementability between the next door.

Where necessary, can implement to handle with enhancing and be arranged at the polymkeric substance of the polymerizable compound of next door upper end and the cementability of upper end, next door at least.For example, by for example forming small unevenness to improve cementability with dry-etching next door upper end.Perhaps, can utilize to upper end, next door at least carry out ozone treatment and the functional group that forms (as-OH or-COOH), with the polymerizable compound chemical fixation to the upper end in next door at least.In addition, can also bonding film parent terrain is partially polymerized.

＜step 3 〉

Figure 23 and 24 is description of step 3 schematically, and step 3 is by the diaphragm seal parent terrain that comprises polymerizable compound, a step of the state before generation makes the polymerization of diaphragm seal parent are set at the desired location place.

In this state, in the present embodiment, diaphragm seal parent terrain 120 contacts with at least a portion upper end in exposed surface 140 that is filled in the dispersion medium between the adjacent next door 20 and next door 20, as shown in Figure 23.

As mentioned above, in the present embodiment, the upper end in next door is made of the bonding film parent terrain 200 that comprises polymerizable compound at least.For this reason, when carrying out polymerization process described below, the polymkeric substance of the polymkeric substance of diaphragm seal parent and bonding film parent (being bonding film) contacts with each other, thereby can strengthen the cementability between them.

Employed polymerizable compound is characterised in that in the present embodiment, and it is insoluble in (mixing) dispersion medium.For this reason, when the diaphragm seal parent terrain was arranged on the dispersion medium, a part of dispersion medium that is between diaphragm seal parent and the next door flow to this structure outside in the present embodiment.The polymerizable compound that not only diaphragm seal parent terrain, and formation is scattered in the bonding film parent of upper end has all quickened the outflow phenomenon of dispersion medium.Even sub-fraction diaphragm seal parent terrain contacts with the upper end, next door, they also begin contact each other as the slide fastener that closes up.At this moment, further quickened the outflow phenomenon of dispersion medium.As a result, even if realize reliably in dispersion medium, also can guarantee contacting of bonding required diaphragm seal parent terrain and next door between diaphragm seal and the next door.

In this step, the diaphragm seal parent terrain 120 that comprises polymerizable compound can be supported by support component 130, as shown in Figure 24, thereby even the proportion of diaphragm seal parent greater than the proportion of dispersion medium, the diaphragm seal parent also can not sink to the bottom of dispersion medium layer.In other words, the proportion for the diaphragm seal parent does not add restriction.In addition, because diaphragm seal parent terrain 120 is supported by support component, it does not directly contact surrounding air, thereby uses UV polymeric material by the free radical polymerization polymerization as the polymerizable compound of formation diaphragm seal parent.In addition, can avoid forming droplet, thereby for example can make the thickness of diaphragm seal even on large tracts of land.

If realize the said structure of each element, then the method to set up for diaphragm seal parent, dispersion medium etc. does not add restriction.For example, can be with polymerizable compound or wherein dissolved on the fine upper end (exposed surface) that sprays to dispersion medium of the volatilization liquid of polymerizable compound.Polymerizable compound used in the present embodiment is insoluble to dispersion liquid, thereby polymerizable compound becomes film partly at the exposed surface place of dispersion liquid.When polymerizable compound have-OH base or-during the O-base, be easy to take place this phenomenon.As hereinafter described, has this group in the present embodiment in the structure of polymerizable compound.

In addition, polymerizable compound can be coated on exposed surface and the bonding film parent terrain.

If desired, bonding film parent terrain can have and comprises two-layer or more multi-layered rhythmo structure.For example, with ground floor that the exposed surface of dispersion liquid contacts on, second layer polymerizable compound can be set.For example, can prepare the second layer, need not to use above-mentioned support component by on ground floor, applying polymerizable compound.Can prepare ground floor by above-mentioned fine spraying method.Ground floor can be formed by the polymkeric substance of polymerizable compound or polymerizable compound.

On the other hand, after the potpourri that comprises dispersion medium and electrophoresis particle (dispersion liquid) is filled between the adjacent next door, can on the septate substrate of formation, form the support component that is provided with the diaphragm seal parent terrain.Perhaps, after electrophoresis particle is arranged between the adjacent next door, the support component that is provided with the diaphragm seal parent terrain relatively is set, has predetermined interval between them, and inject dispersion medium at interval by this with forming septate substrate.Afterwards, support component can be pressed to the septate substrate of formation.

＜step 4 〉

Figure 25 and 26 is description of step 4 schematically, and step 4 is to constitute the diaphragm seal parent of diaphragm seal parent terrain 120 until polymerization, and the bonding film parent that will constitute bonding film parent terrain 200 is arranged on a step on the upper end, next door.

By carrying out the polymerization of the diaphragm seal parent as shown in Figure 23 and 24, as shown in Figure 25 and 26, form diaphragm seal 30.Simultaneously, also the polymerization of bonding film parent is formed bonding film 90.

By polymerization, the polymerizable compound that is arranged on the bonding film parent terrain of formation of next door upper end at least is bonded to each other with the polymerizable compound that constitutes the diaphragm seal parent in this step, thereby strengthens the cementability between diaphragm seal and the bonding film.On the other hand, bonding as mentioned above film bonds on the upper end in next door.Thereby, can guarantee the diaphragm seal prepared in this step and the cementability in next door.

In the situation of display device shown in Figure 26, can also remove support component 130.In this case, form the display device shown in Figure 25.After removing support component 130, can on diaphragm seal, form another film.Equally, can also on the diaphragm seal of display device shown in Figure 25, form another film.

In the superincumbent description, omitted with the electric signal bringing device be connected and other steps.

(3) below, specific descriptions be can be applicable to the material of the embodiment of the manufacture method of first and second aspects etc. according to the present invention.

Used dispersion medium is an iknsulating liquid among the present invention.Can be with an organic solvent as isoalkane (for example, trade (brand) name " Isoper " is made by Exxon company), silicone oil, dimethylbenzene or toluene as iknsulating liquid.

Do not limit material, particle size and the color of electrophoresis particle especially, as long as they can realize desirable demonstration.The material that is preferred for it is painted, and has good negative or positive chargeability (chargeability).This material for example comprises multiple inorganic and organic pigment, carbon black and comprises pigment or the resin of carbon black.The particle size of exposed surface is typically about 0.01-50 μ m, preferably approximately 0.1-10 μ m.

In above-mentioned iknsulating liquid or electrophoresis particle, can add charge control agent, be used to control and the chargeability of stable electrophoresis particle.Charge control agent for example comprises succinimide, monoazo dyes metal complex salt, salicylic acid, organic quaternary ammonium salt and nigrosine compound.

Below, will the diaphragm seal parent that the present invention uses be described.

The diaphragm seal parent is preferably liquid, and is characterised in that and is insoluble in the above-mentioned dispersion medium.

Herein, term " soluble " or " being insoluble to " mean between the solubility parameters of two kinds of compounds (for example diaphragm seal parent and dispersing liquid) to have than big-difference.This difference is not less than 0.1 usually, preferably is not less than 0.5, more preferably is not less than 1.0.

In addition, the diaphragm seal parent is characterised in that for electrophoresis particle to have little compatibility, and wherein can not dissolve electrophoresis particle.

Restriction constitutes the polymerizable compound of this diaphragm seal parent especially, as long as it can form required diaphragm seal, but does not preferably have following partial structurtes, and these partial structurtes have and are selected from-O--CH ₂O-,-OH and-CH ₂At least one group of the group of-composition.

By having this partial structurtes, the diaphragm seal that is produced can not mix (dissolving) in dispersion medium.In addition, can also control the diaphragm seal and the physical chemistry between the electrophoresis particle that are produced interacts.As mentioned above, when polymerizable compound had above-mentioned partial structurtes, it can not only produce diaphragm seal effectively, and can also control the function of diaphragm seal.Bonding (power) between electrophoresis particle and the diaphragm seal interacts for for example physical chemistry, and can control by the surface energy of diaphragm seal.When the surface energy of diaphragm seal hour produced bonding less.

Have-CH ₂The polymerizable compound of-O-partial structurtes comprises having-CH ₂-CH ₂-O-unit, (CH ₂-CH ₂O) _n(n: polyglycol unit integer), perhaps-CH ₂-O-CH ₂-CH ₂-CH ₂-CH ₂-O-CH ₂The polymerizable compound of-unit.

In addition, have-polymerizable compound of O-partial structurtes comprise have adjacent group-O-and-CH ₂-(for example polyethylene glycol type) perhaps has and do not contain adjacent-CH ₂The polymerizable compound of the unit of-group (for example carbonic acid ester bond).

Have-CH ₂The polymerizable compound of-partial structurtes comprise have repetition-CF ₂The polymerizable compound of-group unit.

Do not limit the polymerization of diaphragm seal, as long as can prepare required diaphragm seal.For example, can form diaphragm seal by the photopolymerization process that is polymerized to representative with UV.

In the situation that adopts the UV polymerization, can utilize to have-OH-CH ₂-O-,-O-,-CF ₂The free radical polymerization acrylate of-partial structurtes or methacrylate compound are as polymerizable compound.For example, this (methyl) acrylate compounds comprises: 2-hydroxyethyl methacry-late; 1,4-butanediol diglycidyl ether diacrylate; Polyglycol monomethyl acrylate (for example " Blenmer PE " series of making by Nippon Yushi K.K.); Polytetramethylene ether glycol=two (2-maleimide acetate) (for example " MIA200 " that makes by Dainippon Ink AndChemicals company); 1H, 1H, 5H-octafluoro amyl group acrylate (for example " V-8F " that makes by Osaka Yuki Kagaku Kogyo K.K.); And 1H, 1H, 2H, 2H-17 fluorine decyl acrylate (for example " V-17F " that makes by Osaka Yuki Kagaku KogyoK.K.).

Polymerizable compound can be polymerisable monomer or polymerizable oligomers.These monomers and oligomer can be mono-functionalized compound or polyfunctional compound.In addition, polymerizable compound can be the potpourri of monomer and oligomer, perhaps is the potpourri of simple function group compound and polyfunctional compound.

Exist Photoepolymerizationinitiater initiater as can making the polymerizable compound polymerization by using up (for example UV light) irradiation from " Irgacure 184 " or " Irgacure 641 " that Ciba Speciality Chemical K.K. buys or can be from " MIA200 " that Dainippon Ink AndChemicals company buys the time.

Support component is not limited, as long as can form required diaphragm seal, but its surface preferably has compatibility or compatibility for the diaphragm seal parent.Because compatibility, for example in above-mentioned steps 2, support component can support the diaphragm seal parent terrain effectively.

Can be applicable to support component of the present invention as this, not only can use PET (polyethylene terephthalate), PC (polycarbonate), PES soft (flexibility) substrates such as (polyethersulfones), but also can use hard substrate such as glass, quartz.Support component is preferably transparent.In addition, when being used for above-mentioned photopolymerisable optical wavelength zone and being in the UV scope, also require support component to show the UV permeability.

If the support component surface does not have compatibility for the diaphragm seal parent, for example then need by the polymer film of the polymerizable compound that constitutes the diaphragm seal parent is set in the support component surface, the experience compatibility is given processing.Also can use additive method, as long as these methods can be given support component surface (with the diaphragm seal parent) compatibility.

Can be applicable to next door of the present invention and comprise that the thick film of photoresist cured article is (for example, by Minesota Mining ﹠amp; " SU-8 " that Manufacturing company makes).

The upper end in next door preferably has compatibility to the diaphragm seal parent.Based on compatibility, can obtain following advantage.At first, can guarantee cementability between upper end, next door and the diaphragm seal.Secondly, for example in embodiment step 2, can prevent that dispersion medium from entering the contact portion in diaphragm seal parent terrain and next door according to the manufacture method of first aspect present invention.This is because diaphragm seal parent and dispersion medium are immiscible each other, and the diaphragm seal parent has compatibility for the upper end, next door.In other words, the dispersion medium that is between diaphragm seal parent terrain and the upper end, next door is flowed out in a large number.

If the upper end, next door does not have required compatibility for the diaphragm seal parent, then need for example to apply the polymerizable compound of formation diaphragm seal parent or the polymkeric substance of polymerizable compound by next door upper end and vicinity thereof, the experience compatibility is given processing.Can also use additive method, as long as these methods can be given for upper end, next door (for the diaphragm seal parent) and near compatibility thereof.

Do not limit the septate substrate of top formation used among the present invention especially.Not only can use PET (polyethylene terephthalate), PC (polycarbonate), PES soft (flexibility) substrates such as (polyethersulfones), but also can use hard substrate such as glass, quartz.The substrate surface that contacts with dispersion medium preferably has compatibility for this dispersion medium, but does not have the character that is dissolved in the dispersion medium.

The material of the electrode that uses among the present invention and structure are not subjected to very big restriction yet, as long as can realize required demonstration.Electrode material can be Al or ITO (tin indium oxide).Do not limit electrode structure especially, cause the required displacement of the necessary change of show state as long as can cause electrophoresis particle.Also as in the situation of reflection layer, can suitably use high reflecting material at above-mentioned first electrode 60 as silver (Ag) or aluminium (Al).When using the electrode of the white demonstration of first electrode, 60 conducts, first electrode itself has the smooth property of air spots, thereby makes light generation irregular reflection.Perhaps, can on first electrode, form light scattering layer.

(4) below, the present invention will be described for example.

Embodiment 1

Electric display device shown in preparation Fig. 1.

The display device that is produced has 200 * 600 pixels, and each pixel has the size of 240 μ m * 80 μ m.Be 8 μ m, highly be that the next door 20 of 28 μ m is around each pixel by width.First electrode 60 is arranged between the adjacent next door 20, and links to each other with switchgear 80.Second electrode 70 is arranged between next door 20 and the substrate 10.Second electrode 70 is the common electrodes of all pixels.

The concrete manufacture method of display device in the present embodiment is described with reference to Fig. 3-5 and 10.

Forming switchgear 80 on 10 at the bottom of the thick stainless steel lining of 0.1mm.Apply this substrate with the acrylic resin insulation layer then, and this insulation course is provided with contact hole.Afterwards, on insulation course, be formed for the resist pattern of scatter incident light, and on the resist pattern, form aluminium first electrode 60, and first electrode 60 is electrically connected with switchgear 80 on being arranged on substrate 10 by contact hole.Cover first electrode 60 with acrylate resin layer.First electrode 60 is also as light reflect/scatter layer (Fig. 3) in this example.On acrylate resin layer, form the next door 20 of aterrimus titanium carbide second electrode 70 and pure photoresist product (by " SU-8 " of 3M company manufacturing) with thick film by known photoetching method.After forming second electrode 70, cover the acryl resin laminar surface on first electrode 60 and the surface of second electrode 70 with layer of polycarbonate.

After applying, fill the dispersion liquid (Figure 10) that comprises dispersion medium 40 and electrophoresis particle 50 at each pixel place.Can use isoalkane (trade (brand) name: " Isoper H "; Proportion: 0.76; Make by Exxon company) as dispersion medium 40.Use comprises the particle (average particle size particle size: 1-2 μ m) as electrophoresis compound 50 of the styrene-methylmethacrylate copolymer resin of carbon black.In isoalkane, and the interpolation succinimide (trade (brand) name: " OLOA1200 ", make by Shevron company) as charge control agent.

On the other hand, on as the PET substrate of support component 130, form diaphragm seal parent terrain 120 (Figure 10).Can use as 1 of UV-curable monomer the (trade (brand) name: " NK oligo EA-5520 " of 4-butanediol diglycidyl ether diacrylate; Proportion: be not less than 1; Make by Shin Nakamura Kagaku Kogyo K.K.) as the diaphragm seal parent.This acrylate monomer and Isoper H (as dispersion medium) are immiscible each other, and the proportion of acrylate monomer is greater than the proportion of Isoper H.

In the above on Zhi Bei the support component 130, be mixed with the acrylate monomer of 5wt% Photoepolymerizationinitiater initiater (" Irgacure 184 " that can buy from Ciba-Gaigy company limited) by spin coating, forming thickness is the diaphragm seal parent terrain 120 of 7 μ m.

Afterwards, support component 130 is placed on next door 20 and the dispersion medium 40, makes diaphragm seal parent terrain 120 contact (Figure 10) with dispersion medium 40 with next door 20.After contacting several seconds, diaphragm seal parent terrain 120 is pushed dispersion liquid open, makes it not contact with next door 20, covers the upper end in next doors 20 and exposure (outward) a kind of like this state in surface (Fig. 4) of dispersion liquid thereby finally produce diaphragm seal parent terrain 120.

After producing this state, at room temperature the structure that is produced is subjected to the UV irradiation 5 minutes that intensity is 0.3mW/cm, causes the polymerization of diaphragm seal parent.As a result, form the diaphragm seal 30 (Fig. 5) that solidifies.

After polymerization, when from when watching the display device that is produced, not observing electrophoresis particle 50 in the upper end of next door 20 and the diaphragm seal 30 near diaphragm seal 30 1 sides.In other words, during polymerization process, do not comprise electrophoresis particle 50 in the diaphragm seal 30.

Then, by+15V and-alternately regulate the electromotive force of second electrode with the frequency of 1Hz between the 15V, simultaneously with first electrode grounding, this routine display device is driven.As a result, when replacing potential regulating, the show state that is produced alternately changes between black state and white states.

Even continue to drive this display device, do not move and overflow a kind of like this phenomenon in next door 20 to such an extent as to can not observe electrophoresis particle 50 yet.In other words, confirm that dispersion liquid is subjected to the restriction of diaphragm seal, next door and substrate.Confirm that also diaphragm seal bonds on the next door, do not peel off.

Embodiment 2

Except removing support components 130 from diaphragm seal 30, diaphragm seal 30 is exposed to beyond the surrounding air, prepare electric display device according to the mode identical with embodiment 1.

When with embodiment 1 in when similarly driving this display device, this display device show with embodiment 1 in identical show state change.When driving display device, do not move the phenomenon of overflowing next door 20 to such an extent as to observe electrophoresis particle 50.In addition, do not observe yet diaphragm seal 30 from the next door 20 sides peel off and dispersion medium 40 volatilization, thereby proof diaphragm seal 30 is bonded to each other with next door 20.

Thereby, although display device backward with to front curve, does not move the phenomenon of overflowing the next door to such an extent as to observe electrophoresis particle 50 yet.In addition, in display device under the crooked or aduncate state, according to embodiment 1 in identical mode the driving of display device is estimated.As a result, the show state of observing similarly to Example 1 changes.

Embodiment 3

According to embodiment 1 in identical mode prepare electric display device, but the diaphragm seal parent changes over polyethylene glycol methacrylate-styrene polymer (trade (brand) name: " PE200 "; Proportion: be not less than 1; Make by Nippon Yushi K.K.).Methacrylate is insoluble to Isoper H, and proportion is greater than the proportion of Isoper H.

When driving the display device that is produced in the same manner, observe the show state identical and change with embodiment 1 with embodiment 1.Even this display device of continuous drive is not observed electrophoresis particle 50 yet and is moved so that overflow the phenomenon in next door 20.In addition, diaphragm seal 30 is not peeled off from the next door side.

Embodiment 4

According to embodiment 1 in identical mode prepare electric display device, but the material that is used for next door 20 changes over clavate and curl shape segmented copolymer with following formula (I) expression:

M=40 wherein, n=900.

The Mw/Mn of segmented copolymer (weight average molecular weight/number mean molecular weight)＜1.05.

Be coated on by curtain coating under the humidity of 95%RH that segmented copolymer is the solution of 3wt% in the carbon disulphide, on substrate, form next door 20.The next door 20 that is produced has cellular structure, and recording the aperture is 50 μ m, highly is 5 μ m, and aspect ratio is 40.

After next door 20 forms, according to embodiment 1 in identical mode form diaphragm seal 30.After diaphragm seal 30 forms, remove support component.

According to embodiment 1 in identical mode drive the display device that is produced.As a result, observe with example 1 in identical show state change.When driving display device, electrophoresis particle can not take place move so that overflow the phenomenon in next door.In addition, not observing diaphragm seal peels off from the next door side.

Embodiment 5

Preparation electric display device as shown in Figure 11.

The display device that is produced has 200 * 600 pixels, and each pixel has the size of 240 μ m * 80 μ m.Be 8 μ m, highly be that the next door 20 of 28 μ m is around each pixel by width.First electrode 60 is arranged between the adjacent next door 20, and links to each other with switchgear 80.Second electrode 150 is arranged on the support component 130.Second electrode 150 is the common electrodes of all pixels.

The concrete manufacture method of display device is identical with embodiment 1 basically in the present embodiment.

Forming switchgear 80 on 10 at the bottom of the thick stainless steel lining of 0.1mm.Apply this substrate with the acrylic resin insulation layer then, and this insulation course is provided with contact hole.Afterwards, on insulation course, be formed for the resist pattern of scatter incident light, and on the resist pattern, form aluminium first electrode 60, and first electrode 60 is electrically connected with switchgear 80 on being arranged on substrate 10 by contact hole.Cover first electrode 60 with acrylate resin layer.First electrode 60 is also as light reflect/scatter layer in the present embodiment.On acrylate resin layer, form the thick film next door 20 that pure photoresist product (by " SU-8 " of 3M company manufacturing) is made by known photoetching method, thereby limit each pixel.

Then, fill the dispersion liquid (Figure 10) that comprises dispersion medium 40 and electrophoresis particle 50 at each pixel place.Can use isoalkane (trade (brand) name: " Isoper H "; Proportion: 0.76; Make by Exxon company) as dispersion medium 40.Use white Titanium particles (average particle size particle size: 1-2 μ m) as electrophoresis compound 50.In isoalkane, and the interpolation succinimide (trade (brand) name: " OLOA1200 ", make by Shevron company) as charge control agent, and add blue dyes.

On the other hand, be provided with the ITO electrode layer as second electrode 150 as the PET substrate of support component 130 on form diaphragm seal parent terrain 120.Can use as 1 of UV-curable monomer the (trade (brand) name: " NK oligoEA-5520 " of 4-butanediol diglycidyl ether diacrylate; Proportion: be not less than 1; Make by Shin Nakamura Kagaku Kogyo K.K.) as the diaphragm seal parent.This acrylate monomer and Isoper H (as dispersion medium) are immiscible each other, and the proportion of acrylate monomer is greater than the proportion of Isoper H.

On the support component 130 (being provided with second electrode 150) by preparation in the above, spin coating is mixed with the acrylate monomer of 5wt% Photoepolymerizationinitiater initiater (" Irgacure184 " that can buy from Ciba-Gaigy company limited), and forming thickness is the diaphragm seal parent terrain 120 of 7 μ m.

Afterwards, support component 130 is placed on next door 20 and the dispersion medium 40, diaphragm seal parent terrain 120 is contacted with dispersion medium 40 with next door 20.From contacting after several seconds, diaphragm seal parent terrain 120 is pushed dispersion liquid open, makes it not contact with next door 20, covers a kind of like this state in the upper end in next door 20 and the exposure of dispersion liquid (outward) surface at least thereby finally produce diaphragm seal parent terrain 120.

After producing this state, at room temperature the structure that is produced is subjected to 0.3mW/cm intensity UV irradiation 5 minutes, makes the polymerization of diaphragm seal parent.As a result, form the diaphragm seal 30 (Figure 11) that solidifies.

Then, by+15V and-alternately regulate the electromotive force of second electrode with the frequency of 1Hz between the 15V, simultaneously with first electrode grounding, the present embodiment display device is driven.As a result, when replacing potential regulating, the show state that is produced alternately changes between white states and blue color states.

Embodiment 6

According to embodiment 1 in identical mode prepare electric display device, but the diaphragm seal parent changes over polytetramethylene ether glycol=two (2-maleimide acetate) (trade (brand) name: " MIA200 "; Proportion: be not less than 1; Dainippon Ink And Chemicals company makes), and do not add Irgacure 184 in the diaphragm seal parent.This compound is insoluble to Isoper H, and proportion is greater than Isoper H.Not adding the reason of Irgacure 184 in the diaphragm seal parent, is because just can be with this compound (MIA200) polymerization when not using Photoepolymerizationinitiater initiater.

When with embodiment 1 in when driving the display device produced in the same manner, observe with embodiment 1 in identical show state change.Even the continuous drive display device is not observed electrophoresis particle 50 yet and is moved so that overflow the phenomenon in next door 20.In addition, diaphragm seal 30 is not peeled off from the next door side.

Embodiment 7

According to embodiment 1 in identical mode prepare electric display device, but the diaphragm seal parent becomes 80 weight portion polytetramethylene ether glycol=two (2-maleimide acetate) (trade (brand) name: " MIA200 "; Proportion: be not less than 1; Dainippon Ink And Chemicals company makes) and 20 weight portion 1H, the 1H, (trade (brand) name: " V-8F " of 5H-octafluoro amyl group acrylate; Proportion: be not less than 1; Make by Osaka Yuki Kagaku Kogyo K.K.) potpourri, and do not add Irgacure 184 in the diaphragm seal parent.This potpourri is insoluble among the Isoper H, and proportion is greater than the proportion of Isoper H.The reason of not adding Irgacure 184 in the diaphragm seal parent is, need not to use Photoepolymerizationinitiater initiater to get final product this compound (MIA200) polymerization.

When with embodiment 1 in when driving the display device produced in the same manner, observe with embodiment 1 in identical show state change.Even the continuous drive display device does not move the phenomenon of overflowing next door 20 to such an extent as to observe electrophoresis particle 50 yet.In addition, diaphragm seal 30 is not peeled off from the next door side.

Embodiment 8

According to embodiment 1 in identical mode prepare electric display device, but the diaphragm seal parent changes over 50 weight portion 1H, 1H, 2H, 2H-17 fluorine decyl acetate (trade (brand) names: " V-17F "; Proportion: be not less than 1; Make by Osaka Yuki Kagaku Kogyo K.K.) and 15 weight portion 1H, the 1H, (trade (brand) name: " V-8F " of 5H-octafluoro amyl group acrylate; Proportion: be not less than 1; Make by Osaka Yuki Kagaku Kogyo K.K.) potpourri, and Irgacure 184 becomes " MIA200 ".This potpourri is insoluble to Isoper H, and proportion is greater than Isoper H.Photoepolymerizationinitiater initiater (MIA200) is a kind of composition that constitutes diaphragm seal after the polymerization.

When with embodiment 1 in when driving the display device produced in the same manner, observe with embodiment 1 in identical show state change.Even the continuous drive display device is not observed the phenomenon that electrophoresis particle 50 moved so that overflowed next door 20 yet.In addition, diaphragm seal 30 is not peeled off from the next door side.

Embodiment 9

Electric display device shown in preparation Figure 12.

The concrete manufacture method of display device in the present embodiment is described with reference to Figure 19-21,24 and 26.

With reference to Figure 19, forming switchgear 80 on 10 at the bottom of the thick stainless steel lining of 0.1mm.Apply this substrate with the acrylic resin insulation layer then, and this insulation course is provided with contact hole.Afterwards, on insulation course, be formed for the resist pattern of scatter incident light, and on the resist pattern, form aluminium first electrode 60, and first electrode 60 is electrically connected with switchgear 80 on being arranged on substrate 10 by contact hole.Cover first electrode 60 with the acrylate resin layer that comprises titanium oxide fine particle.First electrode 60 is also as light reflect/scatter layer in this example.On acrylate resin layer, form the thick film next door 20 that aterrimus titanium carbide second electrode 70 and pure photoresist product (" SU-8 " that made by 3M company) are made by known photoetching method.

But in addition on the PET substrate spin coating as 1 of the UV polymerizable compound, (the trade (brand) name: " NK oligo EA-5520 " of 4-butanediol diglycidyl ether diacrylate; Proportion: be not less than 1; Make by Shin Nakamura Kagaku Kogyo K.K.), wherein added the Photoepolymerizationinitiater initiater (" Irgacure 184 " of making by Ciba-Gaigy company limited) of 5wt%.The coating thickness of the polymerizable compound that is produced is 7 μ m.

The PET substrate 180 that is provided with polymerizable compound coating 190 is contacted, as shown in Figure 20 with the upper end in next door 20.After contact from upper end, next door removal (peeling off) PET substrate 180.As a result, polymerizable compound can be arranged on the upper end in next door.In other words, can with polymerizable compound from the PET substrate-transfer to the upper end, next door.Realize that a reason that shifts is that polymerizable compound (EA-5520) has good compatibility for the next door.Figure 21 schematically illustrates the state after shifting, and wherein Reference numeral 200 expressions are as the transfer layer of the polymerizable compound of above-mentioned bonding film parent.

After shifting, the dispersion liquid that comprises dispersion medium 40 and electrophoresis particle 50 is filled in each pixel place (Figure 10).Can use isoalkane (trade (brand) name: " Isoper H "; Proportion: 0.76; Make by Exxon company) as dispersion medium 40.Use contains the particle (average particle size particle size: 1-2 μ m) as electrophoresis compound 50 of the styrene methyl methacrylate copolymer resin of carbon black.In isoalkane, and the interpolation succinimide (trade (brand) name: " OLOA1200 ", make by Shevron company) as charge control agent.

On the other hand, be arranged on diaphragm seal parent terrain 120 (Figure 24) on the dispersion medium by PET substrate supports as support component 130.Can use as 1 of UV-curable monomer the (trade (brand) name: " NK oligo EA-5520 " of 4-butanediol diglycidyl ether diacrylate; Proportion: be not less than 1; Make by Shin Nakamura Kagaku Kogyo K.K.) as the diaphragm seal parent.This acrylate monomer and Isoper H (as dispersion medium) are immiscible each other, and the proportion of acrylate monomer is greater than the proportion of Isoper H.

On the support component 130 by preparation in the above, spin coating is mixed with the acrylate monomer of 5wt% Photoepolymerizationinitiater initiater (" Irgacure 184 " that can buy from Ciba-Gaigy company limited), and forming thickness is the diaphragm seal parent terrain 120 of 7 μ m.

Afterwards, support component 130 is placed on next door 20 and the dispersion medium 40, diaphragm seal parent terrain 120 is contacted with dispersion medium 40 with next door 20.After contacting several seconds, diaphragm seal parent terrain 120 is pushed dispersion liquid open, makes it not contact with next door 20, covers the upper end in next doors 20 and exposure (outward) a kind of like this state in surface (Figure 24) of dispersion liquid thereby finally produce diaphragm seal parent terrain 120.

After producing this state, at room temperature the structure that is produced is subjected to the UV irradiation 5 minutes of 0.3mW/cm intensity, makes diaphragm seal parent and the polymerization of bonding film parent.As a result, form diaphragm seal 30 that solidifies and the bonding film 90 (Figure 26) that solidifies.

Embodiment 10

According to example 9 in identical mode prepare electric display device, the diaphragm seal 30 of not associating is removed support components 130, thereby makes diaphragm seal 30 be exposed to surrounding air.

When with example 9 in when driving this display device in the same manner, this display device show with example 9 in identical show state change.When driving display device, do not move the phenomenon of overflowing next door 20 to such an extent as to observe electrophoresis particle 50.In addition, do not observe yet diaphragm seal 30 from the next door 20 sides peel off and dispersion medium 40 volatilization, thereby confirm that diaphragm seal 30 and next door 20 are bonded to each other together.

Thereby, although display device backward with to front curve, does not move the phenomenon of overflowing the next door to such an extent as to observe electrophoresis particle 50 yet.In addition, in display device under the crooked or aduncate state according to example 9 in identical mode the driving of display device is estimated.As a result, observe with example 9 in identical show state change.In addition, confirm that diaphragm seal is adhered to the next door, do not peel off from the next door.

Embodiment 11

According to embodiment 9 in identical mode prepare electric display device, but the diaphragm seal parent changes over polyethylene glycol methacrylate-styrene polymer (trade (brand) name: " PE200 "; Proportion: be not less than 1; Make by Nippon Yushi K.K.).Methacrylate is insoluble to Isoper H, and proportion is greater than Isoper H.

When with embodiment 9 in when driving the display device produced in the same manner, observe with embodiment 9 in identical show state change.Even when the continuous drive display device, do not move the phenomenon of overflowing next door 20 to such an extent as to observe electrophoresis particle 50 yet.In addition, diaphragm seal 30 is not peeled off from the next door side.

Embodiment 12

Be prepared as follows electric display device.

Repeat with embodiment 9 in identical step, until formation next door 20.

Then, will with used identical, ethanol among the embodiment 9 in contain 5wt% (based on polymerizable compound) Photoepolymerizationinitiater initiater (" Irgacure 184 ", make by Ciba-Geigy company limited) 1% polymerizable compound solution (EA-5520), be spin-coated on the substrate that is provided with the next door.Carry out spin coating, make the whole surface in next door 20 scribble polymerizable compound solution (EA-5520), thereby form bonding film parent terrain 200, as shown in Figure 22.Be 0.3mW/cm at room temperature with intensity ²15 seconds of structure of being produced of UV rayed.Under the UV illuminate condition, only with the coated polymerizable compound of a part (EA-5520) polymerization.

Afterwards, the dispersion liquid that will comprise dispersion medium 40 and electrophoresis particle 50 is filled in each pixel place (Figure 10).Use isoalkane (trade (brand) name: " Isoper H "; Proportion: 0.76; Make by Exxon company) as dispersion medium 40.Use contains the styrene methyl methacrylate copolymer resin particle (average particle size particle size: 1-2 μ m) as electrophoresis compound 50 of carbon black.In isoalkane, and the interpolation succinimide (trade (brand) name: " OLOA1200 ", make by Shevron company) as charge control agent.

Afterwards, according to embodiment 9 in the identical mode diaphragm seal parent terrain that will be formed on the support component 130 be arranged on the dispersion medium.After contacting several seconds, diaphragm seal parent terrain 120 is pushed dispersion liquid open, makes it not contact with next door 20, covers the upper end in next door 20 and state (Figure 24) that dispersion liquid exposes (outward) surface at least thereby finally produce diaphragm seal parent terrain 120.

After producing this state, be 0.3mW/cm at room temperature with intensity ²The structure that produced of UV radiation irradiation 5 minutes, make diaphragm seal parent and the polymerization of bonding film parent.As a result, form diaphragm seal 30 that solidifies and the bonding film 200 that solidifies.

After polymerization, when from the display device that produced near diaphragm seal 30 unilateral observations, do not observe electrophoresis particle 50 in the upper end of next door 20 and the diaphragm seal 30.In other words, during polymerization process, do not comprise electrophoresis particle 50 in the diaphragm seal 30.

Then, by+15V and-alternately regulate the electromotive force of second electrode with the frequency of 1Hz between the 15V, simultaneously with first electrode grounding, the display device of present embodiment is driven.As a result, when replacing potential regulating, the show state that is produced alternately changes between black state and white states.

Embodiment 13

According to embodiment 9 in identical mode prepare electric display device, the diaphragm seal 30 of not associating is removed support components 130, thereby makes diaphragm seal 30 be exposed to surrounding air.

When with embodiment 12 in when driving this display device in the same manner, display device show with embodiment 12 in identical show state change.When driving display device, do not move the phenomenon of overflowing next door 20 to such an extent as to observe electrophoresis particle 50.In addition, do not observe yet diaphragm seal 30 from the next door 20 sides peel off and dispersion medium 40 volatilization, thereby confirm that diaphragm seal 30 and next door 20 are bonded to each other.

Thereby, although display device backward with to front curve, does not move the phenomenon of overflowing the next door to such an extent as to observe electrophoresis particle 50 yet.In addition, in display device under the crooked or aduncate state according to embodiment 9 in identical mode the driving of display device is estimated.As a result, observe with embodiment 9 in identical show state change.In addition, confirm that diaphragm seal is adhered to the next door, do not peel off from the next door.

Embodiment 14

According to embodiment 9 in identical mode prepare electric display device, but the material that is used for next door 20 changes over and also as the identical polymerizable compound (EA-5520) of material of diaphragm seal parent terrain.

When with embodiment 9 in when driving the display device of this generation in the same manner, observe with embodiment 9 in identical show state change.Even during the continuous drive display device, do not move the phenomenon of overflowing next door 20 to such an extent as to observe electrophoresis particle 50 yet.In addition, diaphragm seal 30 is not peeled off from the next door side.

Embodiment 15

Prepare electric display device in the following manner.

Repeat with embodiment 9 in identical step, till the dispersion liquid that will comprise electrophoresis particle, dispersion medium and charge control agent is filled between the next door 20.

Then, 1% the polymerizable compound solution (EA-5520) (based on polymerizable compound) that on dispersion liquid, comprises 5wt% Photoepolymerizationinitiater initiater (" Irgacure184 ", by Ciba-Geigy company limited make) in little spray chloroform.

In little spray operating process, when chloroformic solution was attached to dispersion liquid, chloroform volatilized immediately, thereby formed the film 300 (Figure 27) of polymerizable compound (EA-5520) at exposed surface 140 places of dispersion liquid.The chances are for this because polymerizable compound (EA-5520) is insoluble in the dispersion liquid, and have contain-O-and-molecular structure of OH, thereby show and the similar character of the surfactant of certain type.Under this state, be 0.3mW/cm at room temperature with intensity ²UV rayed dispersion liquid surface 5 minutes.When by structure that microscopic examination produced, limit dispersion medium 40 and electrophoresis particle 50 by transparent membrane 310 and next door 20, as shown in Figure 28.

Then, the polymerizable compound (EA-5520) that comprises 5wt% Photoepolymerizationinitiater initiater (" Irgacure 184 " are made by Ciba-Geigy company limited) in the chloroform is coated on the film 310.

Under this state, be 0.3mW/cm at room temperature with intensity ²The surface 5 minutes of UV rayed polymerizable compound layer, form polymeric layer with the bonding polymerizable compound of film 310 as diaphragm seal.

Forming the thick polycarbonate film of 5 μ m on diaphragm seal, is 0.3mW/cm with intensity at room temperature subsequently ²UV rayed 6 minutes.As a result, residual polymerizable compound continues polymerization on the diaphragm seal outside surface side, and simultaneously, polycarbonate membrane and diaphragm seal are bonding, therefore forms a kind of firm, structure of sealing.

After polymerization, when from when watching the display device that is produced, not observing electrophoresis particle 50 in the upper end of next door 20 and the diaphragm seal near diaphragm seal 30 1 sides.In other words, during polymerization process, do not comprise electrophoresis particle 50 in the diaphragm seal.

Then, by+15V and-alternately regulate the electromotive force of second electrode with the frequency of 1Hz between the 15V, simultaneously with first electrode grounding, the present embodiment display device is driven.As a result, when replacing potential regulating, the show state that is produced alternately changes between black state and white states.

Embodiment 16

Electric display device shown in preparation Figure 29.

The display device that is produced has 200 * 600 pixels, and each pixel has the size of 240 μ m * 80 μ m.Be 8 μ m, highly be that the next door 20 of 28 μ m is around each pixel by width.First electrode 60 is arranged between the adjacent next door 20, and links to each other with switchgear 80.Second electrode 150 is arranged on the support component 130 that is used to support diaphragm seal 30.Second electrode 150 is the common electrodes of all pixels.

Repeat with embodiment 9 in identical step, till formation next door 20.

Spin coating polytetramethylene ether glycol=two (2-maleimide acetate) (trade (brand) name: " MIA-200 " on the PET substrate in addition; Proportion: be not less than 1; Make by Dainippon InkAnd Chemicals company).The thickness of the polymerizable compound coating that is produced is 7 μ m.

The PET substrate that is provided with the polymerizable compound coating is contacted with the upper end in next door 20.After contact from upper end, next door removal (peeling off) PET substrate.As a result, polymerizable compound can be arranged on the upper end in next door.In other words, can with polymerizable compound from the PET substrate-transfer to the upper end, next door.Realize that a reason that shifts is because polymerizable compound (MIA 200) has good compatibility for the next door.

After shifting, fill the dispersion liquid (Figure 10) that comprises dispersion medium 40 and electrophoresis particle 50 at each pixel place.Use isoalkane (trade (brand) name: " Isoper H "; Proportion: 0.76; Make by Exxon company) as dispersion medium 40.Use white Titanium particles (average particle size particle size: 1-2 μ m) as electrophoresis compound 50.In isoalkane, and the interpolation succinimide (trade (brand) name: " OLOA1200 ", make by Shevron company) as charge control agent, and add blue dyes.

On the other hand, be provided with the ITO electrode layer as second electrode 150, PET substrate as support component 130 on, form diaphragm seal parent terrain 120.Use is as 1 of the UV-curable monomer, (the trade (brand) name: " NK oligoEA-5520 " of 4-butanediol diglycidyl ether diacrylate; Proportion: be not less than 1; Make by Shin Nakamura Kagaku Kogyo K.K.) as the diaphragm seal parent.This acrylate monomer and Isoper H (as dispersion medium) are immiscible each other, and the proportion of acrylate monomer is greater than the proportion of Isoper H.

In the above on Zhi Bei the support component 130 (being provided with second electrode 150), be mixed with the acrylate monomer of 5wt% Photoepolymerizationinitiater initiater (" Irgacure184 " that can buy from Ciba-Gaigy company limited) by spin coating, forming thickness is the diaphragm seal parent terrain 120 of 7 μ m.

After producing this state, at room temperature to be subjected to intensity be 0.3mW/cm to the structure that is produced ²UV irradiation 5 minutes, cause the polymerization of diaphragm seal parent and bonding film parent.As a result, form diaphragm seal 30 that solidifies and the bonding film 90 (Figure 29) that solidifies.

Embodiment 17

According to embodiment 1 in identical mode prepare electric display device, but bonding film parent changes over the (trade (brand) name: " NK-ester A-SA " of β-acrylyl oxy-ethyl hydrogen succinate ester; Proportion: be not less than 1; Make by Shin Nakamura Kagaku Kogyo K.K.).This compound is insoluble to Isoper H.

When with embodiment 9 in when driving the display device produced in the same manner, observe with embodiment 9 in identical show state change.Even the continuous drive display device does not move the phenomenon of overflowing next door 20 to such an extent as to observe electrophoresis particle 50 yet.In addition, diaphragm seal 30 is not peeled off from the next door side.

Embodiment 18

According to embodiment 9 in identical mode prepare electric display device, but bonding film parent changes over polytetramethylene ether glycol=two (2-maleimide acetate) (trade (brand) name: " MIA-200 "; Proportion: be not less than 1; Make by Dainippon Ink And Chemicals company).This compound is insoluble to Isoper H.

When with embodiment 9 in when similarly driving the display device produced, observe with embodiment 9 in identical show state change.Even the continuous drive display device does not move the phenomenon of overflowing next door 20 to such an extent as to observe electrophoresis particle 50 yet.In addition, diaphragm seal 30 is not peeled off from the next door side.

Embodiment 19

Prepare electric display device according to the mode identical, but the diaphragm seal parent changes over polytetramethylene ether glycol=two (2-maleimide acetate) (trade (brand) name: " MIA-200 " with embodiment 10; Proportion: be not less than 1; Make by Dainippon Ink And Chemicals company), and do not add Irgacure 184 in the diaphragm seal parent.This compound is insoluble to Isoper H, and proportion is greater than Isoper H.

When with embodiment 18 in when similarly driving the display device produced, observe with embodiment 18 in identical show state change.Even the continuous drive display device does not move the phenomenon of overflowing next door 20 to such an extent as to observe electrophoresis particle 50 yet.In addition, diaphragm seal 30 is not peeled off from the next door side.

Embodiment 20

Prepare electric display device according to the mode identical, but the diaphragm seal parent changes over polytetramethylene ether glycol=two (2-maleimide acetate) (trade (brand) name: " MIA-200 " with embodiment 18; Proportion: be not less than 1; Make by Dainippon Ink And Chemicals company) and the 1H of 20 weight portions, the 1H, (trade (brand) name: " V-8F " of 5H-octafluoro amyl group acrylate; Proportion: be not less than 1; Make by Osaka Yuki Kagaku Kogyo K.K.).This potpourri is insoluble to Isoper H, and proportion is greater than Isoper H.

Embodiment 21

Prepare electric display device according to the mode identical, but the diaphragm seal parent changes over the 1H of 85 weight portions, 1H, 2H, 2H-17 fluorine decyl acrylate (trade (brand) names: " V-17V " with embodiment 18; Proportion: be not less than 1; Make by Osaka Yuki Kagaku Kogyo K.K.) with the 1H of 15 weight portions, the 1H, (trade (brand) name: " V-8F " of 5H-octafluoro amyl group acrylate; Proportion: be not less than 1; Make by Osaka Yuki Kagaku Kogyo K.K.) potpourri.This potpourri is insoluble to Isoper H, and proportion is greater than Isoper H.

Embodiment 22

According to embodiment 15 in identical mode prepare electric display device, but use polytetramethylene ether glycol=two (2-maleimide acetate) (trade (brand) name: " MIA200 "; Proportion: be not less than 1; Make by Dainippon Ink And Chemicals company) as the material of film 300, and use this polymerizable compound as the diaphragm seal parent, do not add Photoepolymerizationinitiater initiater (Irgacure 184) among the MIA200, and polycarbonate membrane is not layered on the diaphragm seal.

When with embodiment 15 in when similarly driving the display device produced, observe with example 15 in identical show state change.Even the continuous drive display device does not move the phenomenon of overflowing next door 20 to such an extent as to observe electrophoresis particle 50 yet.In addition, diaphragm seal 30 is not peeled off from the next door side.

As mentioned above, the method according to this invention can provide the electric display device that comprises cheapness, soft sealing film, and is irrelevant with the proportion of polymerizable compound.In addition, can also guarantee cementability good between diaphragm seal and the next door.

Although described the present invention with reference to the specific embodiment that discloses herein, but the present invention is not limited to given details, its purposes is intended to cover in the improvement purpose or modification or change in the following claim scope.

Claims

1, a kind of manufacture method of electric display device, wherein, at least the dispersion liquid that comprises dispersion medium and electrophoresis particle is arranged on by substrate, is arranged on the next door on this substrate and is arranged in the space that the diaphragm seal on the upper end in next door limits, and described method comprises:

Under dispersion liquid is filled in state between the adjacent next door, the step of diaphragm seal parent is set at least a portion upper end on the exposed surface of dispersion liquid and next door, sealing film parent comprises polymerizable compound, and by support component support and

With the step of described polymerizable compound polymerization with the formation diaphragm seal.

2, method according to claim 1, wherein, described support component has the surface that has compatibility for the diaphragm seal parent.

3, method according to claim 1, wherein, dispersion liquid and diaphragm seal parent are immiscible each other.

4, method according to claim 1, wherein, polymerizable compound is a photopolymerization compounds.

5, method according to claim 4, wherein, photopolymerization compounds comprises photo polymerization monomer or oligomer.

6, method according to claim 5, wherein, photo polymerization monomer is 1,4-butanediol diglycidyl ether diacrylate.

7, method according to claim 5, wherein, the photopolymerization oligomer is polytetramethylene ether glycol=two (2-maleimide acetates).

8, method according to claim 5, wherein, photo polymerization monomer or oligomer comprise two kinds of monomers or oligomer at least.

9, method according to claim 8, wherein, a kind of in described at least two kinds of monomers or the oligomer is fluorinated acrylate.

10, method according to claim 8, wherein, a kind of in described at least two kinds of monomers or the oligomer is polytetramethylene ether glycol=two (2-maleimide acetates).

11, method according to claim 1 wherein, is removed support component from diaphragm seal after finishing polymerization.

12, method according to claim 11 wherein, after removing support component, is provided with another film on diaphragm seal.

13, method according to claim 1, wherein, support component and diaphragm seal are transparent.

14, a kind of manufacture method of electric display device, wherein, at least the dispersion liquid that comprises dispersion medium and electrophoresis particle be arranged on by substrate, be arranged on this substrate and thereon the place, end be provided with the next door of bonding film and be arranged in the space that the diaphragm seal on the upper end in next door limits, described method comprises:

At the exposed surface of dispersion liquid with the step of the diaphragm seal parent that comprises polymerizable compound is set on the bonding film of the next door upper end surface at least, and

Under bonding film parent and diaphragm seal parent state of contact, with the polymerizable compound polymerization so that make diaphragm seal and step that bonding film becomes one.

15, method according to claim 14, wherein, polymerizable compound has at least-individual being selected from-O-,-CH ₂-O-,-OH-and-CF ₂-group.

16, method according to claim 14, wherein, polymerizable compound has polyethylene glycol structures.

17, method according to claim 14, wherein, polymerizable compound is a photopolymerization compounds.

18, method according to claim 14, wherein, photopolymerization compounds is 1,4-butanediol diglycidyl ether diacrylate.

19, method according to claim 15, wherein, the next door comprises the polymkeric substance of polymerizable compound.