CN103235675B - Capacitive touch sensor production method and capacitive touch sensor - Google Patents
Capacitive touch sensor production method and capacitive touch sensor Download PDFInfo
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Abstract
The invention discloses a capacitive touch sensor production method and a capacitive touch sensor. The touch sensor is produced in a double-sided nanometer stamping mode, and an induction electrode layer and a driving electrode layer are integrated with a base material layer. The capacitive touch sensor has the advantages of being ultra-thin, environmentally friendly and low in cost. An important technical mean is provided for production of the touch sensor of touch screens of tablet personal computers and display products with corresponding specifications.
Description
Technical field
The present invention relates to flexible ultra-thin capacitance touching control sensor, it is particularly suited for the system of large-sized capacitive touch screen
Make.
Background technology
With scientific and technological continuous development, touch-screen, as a kind of simple, easily man-machine interaction mode, is extensively applied
In the every field of our daily lifes, such as mobile phone, media player, navigation system, digital camera, photo frame, PDA, game
Equipment, display, electrical equipment control, Medical Devices etc..Touch technology opens the new model of the interpersonal interactive operation of mobile terminal,
Large scale, ultrathin flexible, low cost have become touch-screen industry inevitable development trend.
Touch screen technology is broadly divided into resistance-type, condenser type, infrared type and surface acoustic wave mode, and capacitive touch screen is again
It is divided into surface capacitance type and inductance capacitance formula.Inductance capacitance formula touch-screen due to can realize true multiple point touching, transparency good,
Durability is good, high resolution the advantages of, to become the mainstream technology of the consumer electronics products such as mobile phone, panel computer.
In capacitive touch screen, touch sensing（Touch Sensor）It is then the element of the most critical of touch-screen, its
Cost accounts for the 40% of whole touch-screen.In the capacitive touch screen really being able to realize multi-point touch, in business-like product
Conductive material be essentially tin indium oxide（ITO）, the primary structure of touch sensing is one side ITO structure and two-sided ITO structure；
One side ITO structure is induction electrode layer and drive electrode layer is located in same layer ITO structure, using bridging technique；Two-sided ITO knot
Structure is induction electrode layer and drive electrode layer is located in two-layer ITO structure respectively.Two-sided ITO structure can be same base material, group
Close and form GF2（Glass-Film Ditto）Touch screen structure；Or double layer substrates, ITO structure be in double-layer filmses sensing
Device（Film Sensor）On, then by Optical transparent adhesive, double-layer filmses are fitted thus being combined formation GFF（Glass-
Film-Film）Structure.For above-mentioned ITO sensor either single-sided structure or bilateral structure, the making side of its electrode pattern
Method predominantly sputters ITO material in substrate surface first, then forms telegraph circuit by gold-tinted, etch process.
With the popularization and application of win8 system, touch technology also permeates to large scale display screen, and ITO used above
Touch sensing mode and preparation method thereof then there is problems with:In large area（As more than 23 inches）Sputter on base material
Thickness evenness controls difficulty to improve, yield reduces, and simultaneously in order to meet the requirement of low square resistance, is necessarily required to increase ITO film forming
Thickness, but but bring transmitance reduce problem.Need to form electricity by gold-tinted and etch process in making due to ITO
, there is environmental issue in road.Certainly, ITO material itself resource-constrained, with the extension of touch-screen market application, finds and substitutes ITO
The conductive material of the touch sensing of material is also the problem of concern in industry.Below the low cost that also there is more concern in the industry is asked
Topic.In large touch screen application aspect, ultrathin is also inexorable trend.In order to promote the application of large scale multi-point touch panel,
The present invention provide a kind of based on volume to volume double-face nanometer manufacture method and be used for non-ITO touch sensing preparation method, make
Journey simple process, stable, yield height, low cost, ultra-thin, especially can meet the low square resistance demand of large touch screen, mistake
Cheng Huanbao, is the important method realizing large scale touch screen mutual capacitance type multi-point touch sensor.
Content of the invention
In view of this, it is an object of the invention to proposing a kind of preparation method of capacitance touching control sensor and products thereof,
Not only method is simple, yield is high, and can realize the production of large area touch sensing.
A kind of preparation method of the capacitance touching control sensor being proposed according to the purpose of the present invention, comprises the steps：
On the nanostructured pattern of the first roller, setting first mark, is arranged on the nanostructured pattern of the second roller
Second mark；
Tubular impression materials are arranged on emptying roller, and the open end of described impression materials is wound in material receiving roller
On, rotate described emptying roller and material receiving roller with identical speed, so that described impression materials is transmitted along fixed course；
Using sizer, the front of described impression materials is carried out with the even spread of liquid glue；
Nanostructured pattern in first roller is stamped in, using the first imprinting apparatus, the impressing material being coated with liquid glue
On material, the first mark is stamped in edge formation first mark in the front of impression materials simultaneously, is completed impressing by solidification equipment
Liquid glue be cured to form groove；
Reverse side will be transformed to by the impression materials that described first imprinting apparatus impressing finishes by front using servicing unit；
Using sizer, the reverse side of described impression materials is carried out with the even spread of liquid glue；
Using optical detection apparatus, the first mark is tested and analyzed, judge the second imprinting apparatus with respect to the first pressure
The correspondence position that printing equipment is put, controls described second imprinting apparatus to move to this correspondence position, described second imprinting apparatus are by second
Nanostructured pattern in roller is stamped on the impression materials being coated with liquid glue, and the second mark is stamped in impression materials simultaneously
The edge of reverse side form the second mark, groove is cured to form by imprinting the liquid glue that completes by solidification equipment；
All have reeded impression materials to the positive and negative two sides that completes of impressing and carry out the coating of conductive material so that described
Conductive material is inserted inside groove；
The positive and negative two sides of the impression materials completing coating is polished, removes the conductive material residual outside recess region；
The positive and negative two sides of the impression materials completing polishing is sintered.
Preferably, above-mentioned steps also include, to complete sinter impression materials positive and negative carry out carbon or any one
The coating of dark-coloured liquid material, is sintered to the positive and negative two sides of the impression materials after coating.
Preferably, using one or more conductive materials, the positive and negative two sides of impression materials is coated.
Preferably, described conductive material includes copper slurry, carbon slurry or silver paste, and wherein silver paste particle diameter is less than 1000nm.
Preferably, described second imprinting apparatus complete impressing after, described first mark and second mark overlap, coincidence right
Position precision is less than ± 0.1mm.
Preferably, described optical detection apparatus adopts the position of described first mark of ccd image sensor detection.
Preferably, described solidification equipment to solidify liquid glue using ultraviolet source.
Meanwhile, the invention allows for a kind of capacitance touching control sensor, set the front of the impression materials that sintering completes
It is drive electrode layer for induction electrode layer, reverse side, originally as substrate layer, described capacitance touching control sensor includes base to impression materials
Material layer, be arranged at described substrate layer upper surface induction electrode layer, be arranged at the drive electrode layer of described substrate layer lower surface with
And it is respectively arranged at described induction electrode layer and drive electrode layer with respect to the optical cement laminating layer outside substrate layer.
Preferably, described induction electrode layer and drive electrode layer include the groove of micro nano structure respectively and are arranged at institute
State one or more conductive material inside groove.
Preferably, described induction electrode layer and drive electrode layer include interior circuit and external circuit respectively, described interior circuit
The width of micro nano structure is 500nm-10um, and depth-to-width ratio is less than 1:1, the sheet resistance value of described interior circuit is less than 50 Ou Fang, described
The width of the micro nano structure of external circuit is 500nm-10um, and line-spacing is 10um-50um, and depth-to-width ratio is less than 1:1, described external circuit
Sheet resistance value be less than 10 Ou Fang.
Compared with prior art, being mainly characterized by of the present invention：By induction electrode layer and drive electrode layer and substrate layer
It is integrated, and is made using the method for nano impression, there is ultra-thin, environmental protection, the advantage of low cost, especially for panel computer
And dimensions above shows that the touch sensing deving preparation of the touch-screen of product provides a kind of important technological means.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the imprinting apparatus of making capacitance touching control sensor under a kind of embodiment of the present invention
Figure；
Fig. 2 is the process chart of the preparation method of capacitance touching control sensor of the present invention；
Fig. 3 is the structural representation of the capacitance type sensor under a kind of embodiment of the present invention.
Specific embodiment
As described in the background art, in prior art, touch sensing, adopt tin indium oxide more（Indium Tin
Oxide）I.e. ITO is conductive material, and this not only makes ITO resource requirement itself greatly promote, and supply does not catch up with demand, from
And lead to the soaring of price, there is a problem of that, in large area production, the thickness evenness of sputter ITO is difficult, good on base material simultaneously
Rate reduces, the enlarged in thickness of ITO film forming simultaneously, and this all makes the requirement that it cannot meet large area, ultrathin produces.
In order to overcome the problems referred to above, the present invention proposes a kind of preparation method of brand-new capacitance touching control sensor, adopts
Make the large-area touch sensing deving of capacitance touching control with the method for double-face nanometer impressing.
Technical scheme will be described in detail below.
Embodiment one
With reference to shown in Fig. 1, Fig. 1 is the imprinting apparatus of the making capacitance touching control sensor under a kind of embodiment of the present invention
Structural representation.Including an emptying roller 1, the first imprinting apparatus 3, the second imprinting apparatus 7 and be arranged at this first impressing dress
Put 3 and second servicing units 5 between imprinting apparatus 7, an optical detection apparatus 6, the material receiving roller 8 for rewinding and some auxiliary
Roller, meanwhile, the first imprinting apparatus 3 and the second imprinting apparatus 7 are separately provided for the sizer 2 of gluing and for solid
The solidification equipment 4 changed.First imprinting apparatus 3 include the first roller 31, the first pressure roller 32 and some help rolls, this first roller
It is provided with nanostructured pattern, setting first mark on the nanostructured pattern of this first roller 31 on 31（Do not indicate）.The
Two imprinting apparatus 7 include the second roller 71, the second pressure roller 72 and some help rolls, and this second roller 71 is provided with nano junction
Structure pattern, setting second mark on the nanostructured pattern of this second roller 71（Do not indicate）.Further, this capacitive touch
First imprinting apparatus 3 of the producing device of control sensor are to fix, and the second imprinting apparatus 7 can move, and optical detection apparatus 6 is used
In the correspondence position detecting the first imprinting apparatus 3 and the second imprinting apparatus 7, so adjust the position of the second imprinting apparatus 7, with reality
The contraposition of the coining pattern of existing impression materials positive and negative.
As shown in Fig. 2 Fig. 2 is the process chart of the preparation method of capacitance touching control sensor of the present invention.Tie below
Close Fig. 1 and Fig. 2 a kind of preparation method of present invention capacitance touching control sensor is further elaborated.
It should be noted that setting first identifies on the nanostructured pattern of the first roller 31；In the second roller 71
Setting second mark on nanostructured pattern, this first mark imprints the edge in the front in this impression materials, the second mark pressure
It is printed on the edge of the reverse side of impression materials.
Tubular impression materials are arranged on emptying roller 1, and the open end of this impression materials is wound in material receiving roller 8
On, rotate emptying roller 1 and material receiving roller 8 with identical speed, so that this impression materials is transmitted along fixed course.
Using sizer 2, the front of impression materials is carried out with the even spread of liquid glue.This sizer 2 includes gluing
Roller 21, viscose glue roller 22 and pallet 23.In the course of work, it is loaded with liquid glue in pallet 23, viscose glue roller 22 is in axially-movable
Bond liquid glue in journey and so that liquid glue is coated on upper glue roller 21, upper glue roller 21 will during contacting with impression materials
Liquid glue on upper glue roller 21 is coated on impression materials.Preferably, this liquid glue includes liquid ultraviolet optical cement.
Then, using the first imprinting apparatus 3, the nanostructured pattern in first roller 31 is stamped in and is coated with liquid glue
The front of impression materials on, the edge in the front that the first mark in the first roller 31 is stamped in impression materials forms the simultaneously
One mark A, hereafter, will imprint the solidifying imprinting material being coated with liquid glue that completes by solidification equipment 4 so that impression materials
Front forms groove.Specific method of operating is, under the cooperation of the first pressure roller 32, the first roller 31 and be coated with liquid glue
Impression materials are in close contact, and then make the pattern on impression materials solid before peeling off with the first roller 31 by solidification equipment 4
Chemical conversion type.
Reverse side will be transformed to by the impression materials that the first imprinting apparatus 3 impressing finishes by front using servicing unit 5, auxiliary
Device 5 includes at least one help roll to complete transmission and the conversion of impression materials.
Subsequently, using sizer 2, the reverse side of impression materials is carried out with the even spread of liquid glue again, this time coating with
The front coating process of aforesaid impression materials is identical, will not be described here.
To the impression materials after the completion of coating, using optical detection apparatus 6, the first mark A on impression materials front is entered
Row detection and analysis, judges the correspondence position that the second imprinting apparatus 7 are with respect to the first imprinting apparatus 3, controls the second imprinting apparatus 7
After moving to this correspondence position, the nanostructured pattern in the second roller 71 is stamped in and is coated with liquid by the second imprinting apparatus 7
On the impression materials of glue, the second mark is stamped in edge formation the second mark B of the reverse side of impression materials simultaneously, hereafter, by solid
Gasifying device 4 will imprint the solidifying imprinting material being coated with liquid glue completing so that the reverse side of impression materials forms groove.Specifically
Method of operating be, under the cooperation of the second pressure roller 72, the second roller 71 and be coated with the impression materials of liquid glue and be in close contact,
Then make the pattern on impression materials peel off front curing molding with the second roller 71 by solidification equipment 4.
Then, collected imprinting the impression materials completing by material receiving roller 8.It should be noted that treating the second impressing dress
Put 7 complete impressing after, the first mark A and the second mark B overlaps, and the aligning accuracy of coincidence is less than ± 0.1mm.
Further, positive and negative two sides impressing being completed all has the coating that reeded impression materials carry out conductive material,
Conductive material is inserted inside groove.
The positive and negative two sides of the impression materials completing coating is polished, removes the conductive material residual outside recess region.
It is pointed out that the present invention is coated to the positive and negative two sides of impression materials using one or more conductive materials, example
As：Positive and negative two sided coatings identical conductive material, or the conductive material that positive and negative two sided coatings are different.Wherein, conductive material
Including copper slurry, carbon slurry or silver paste it is preferable that silver paste particle diameter is less than 1000nm.
Finally, the positive and negative two sides of the impression materials completing polishing is sintered.
Embodiment two
Embodiment two, on the basis of embodiment one, carries out carbon to the positive and negative of the impression materials completing sintering or appoints
A kind of coating of meaning dead color liquid material, is sintered again to the positive and negative two sides of the impression materials after coating.Carry out secondary painting
Cloth can reduce the reflective phenomenon on surface, reduces the conduction region of electrode pattern on impression materials surface and the aberration contrast of transparent area
Degree.
It should be noted that above-mentioned optical detection apparatus 5 includes ccd image sensor, using ccd image sensor detection
The position of the first mark.Above-mentioned solidification equipment 4 includes ultraviolet source, to solidify liquid glue using ultraviolet source.Meanwhile, the first pressure
The control pressurer system of roller 32 and the second pressure roller 72 can be using hydraulic control or air pressure control, the first roller 31 and the second edition
Roller 71 can be obtained it is also possible to directly on the surface of roller by sticking a die being provided with required nano-pattern on its surface
Make required nano-pattern it is preferred that the material of die or roller can be nickel, steel, dimethyl silicone polymer
Materials such as (polydimethylsiloxane, PDMS).
As shown in figure 3, Fig. 3 is the structural representation of the capacitance type sensor under a kind of embodiment of the present invention.Set and burn
The front tying the impression materials completing is induction electrode layer 102, reverse side is drive electrode layer 103, and impression materials are originally as base material
Layer 101, capacitance touching control sensor 100 include substrate layer 101, the induction electrode layer 102 being arranged at substrate layer 101 upper surface,
It is arranged at the drive electrode layer 103 of substrate layer lower surface and be respectively arranged at induction electrode layer 102 and drive electrode layer 103 phase
For the optical cement laminating layer 104 in substrate layer 101 outside, optics laminating layer 104 respectively with touch-screen and liquid crystal panel directly against
Close.Substrate layer 101 can be poly- carbonic acid junket（Polycarbonate, PC）, polyvinyl chloride（Polyvinyl Chloride,
PVC）, polyester（Polyethylene terephthalate, PET）, PEN（Polyethylene
naphthalate, PEN）, Merlon（Polycarbanate, PC）Deng material.
Wherein, induction electrode layer 102 and drive electrode layer 103 include the groove of micro nano structure respectively and are arranged at recessed
One or more conductive material inside groove.Further, induction electrode layer 102 and drive electrode layer 103 include interior electricity respectively
Road and external circuit, the width of the micro nano structure of interior circuit is 500nm-10um, and depth-to-width ratio is less than 1:1, the sheet resistance value of interior circuit
Less than 50 Ou Fang, the width of the micro nano structure of external circuit is 500nm-10um, and line-spacing is 10um-50um, and depth-to-width ratio is less than 1:
1, the sheet resistance value of described external circuit is less than 10 Ou Fang.
The capacitance touching control sensor being produced by a kind of preparation method of present invention capacitance touching control sensor, using double
The method of face nano impression is made, and its induction electrode layer 102 and drive electrode layer 103 are integrated with substrate layer 101, make
Capacitance touching control sensor has ultra-thin, environmental protection, the advantage of low cost, meanwhile, the capacitance touching control that the method is made
The area ratio of sensor is big on market, can make more than 23 cun of touch sensing deving, is large-sized display product
Provide the more cheap product of price.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple modifications to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to embodiment illustrated herein, and be to fit to consistent with principles disclosed herein and features of novelty
Scope the widest.Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this
Bright.Multiple modifications to these embodiments will be apparent from for those skilled in the art, is determined herein
The General Principle of justice can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, originally
Invention is not intended to be limited to embodiment illustrated herein, and is to fit to and principles disclosed herein and features of novelty phase one
The scope the widest causing.
Claims (10)
1. a kind of preparation method of capacitance touching control sensor it is characterised in that：Comprise the steps：
Setting first mark on the nanostructured pattern of the first roller, arranges second on the nanostructured pattern of the second roller
Mark；
Tubular impression materials are arranged on emptying roller, and the open end of described impression materials is wound on material receiving roller, use
Identical speed rotates described emptying roller and material receiving roller, so that described impression materials is transmitted along fixed course；
Using sizer, the front of described impression materials is carried out with the even spread of liquid glue；
Using the first imprinting apparatus, the nanostructured pattern in the first roller is stamped on the impression materials being coated with liquid glue,
First mark is stamped in edge formation first mark in the front of impression materials simultaneously, will imprint, by solidification equipment, the liquid completing
Adhesive curing is to form groove；
Reverse side will be transformed to by the impression materials that described first imprinting apparatus impressing finishes by front using servicing unit；
Using sizer, the reverse side of described impression materials is carried out with the even spread of liquid glue；
Using optical detection apparatus, the first mark is tested and analyzed, judge the second imprinting apparatus with respect to the first impressing dress
The correspondence position put, controls described second imprinting apparatus to move to this correspondence position, described second imprinting apparatus are by the second roller
On nanostructured pattern be stamped on the impression materials being coated with liquid glue, simultaneously second mark be stamped in the anti-of impression materials
The edge in face forms the second mark, is cured to form groove by solidification equipment by imprinting the liquid glue completing；
All have reeded impression materials to the positive and negative two sides that completes of impressing and carry out the coating of conductive material so that described conduction
Material is inserted inside groove；
The positive and negative two sides of the impression materials completing coating is polished, removes the conductive material residual outside recess region；
The positive and negative two sides of the impression materials completing polishing is sintered.
2. capacitance touching control sensor as claimed in claim 1 preparation method it is characterised in that：Above-mentioned steps also include,
Carbon or the coating of any one dark-coloured liquid material are carried out to the positive and negative of the impression materials completing sintering, after coating
The positive and negative two sides of impression materials is sintered.
3. capacitance touching control sensor as claimed in claim 1 preparation method it is characterised in that：Using one or more
Conductive material is coated to the positive and negative two sides of impression materials.
4. capacitance touching control sensor as claimed in claim 3 preparation method it is characterised in that：Described conductive material includes
Copper slurry, carbon slurry or silver paste, wherein silver paste particle diameter is less than 1000nm.
5. capacitance touching control sensor as claimed in claim 1 preparation method it is characterised in that：Described second imprinting apparatus
After completing impressing, described first mark and the second mark overlap, and the aligning accuracy of coincidence is less than ± 0.1mm.
6. capacitance touching control sensor as claimed in claim 1 preparation method it is characterised in that：Described optical detection apparatus
Position using described first mark of ccd image sensor detection.
7. capacitance touching control sensor as claimed in claim 1 preparation method it is characterised in that：Described solidification equipment adopts
Ultraviolet source is solidifying liquid glue.
8. a kind of preparation method using the capacitance touching control sensor as described in claim 1-7 any one is made
Capacitance touching control sensor it is characterised in that：The front setting the impression materials that sintering completes is as induction electrode layer, reverse side as driving
Moving electrode layer, originally as substrate layer, described capacitance touching control sensor includes substrate layer, is arranged at described substrate layer impression materials
The induction electrode layer of upper surface, it is arranged at the drive electrode layer of described substrate layer lower surface and is respectively arranged at described induced electricity
Pole layer and drive electrode layer are with respect to the optical cement laminating layer outside substrate layer.
9. capacitance touching control sensor as claimed in claim 8 it is characterised in that：Described induction electrode layer and drive electrode layer
Include the groove of micro nano structure respectively and be arranged at one or more conductive material inside described groove.
10. capacitance touching control sensor as claimed in claim 8 it is characterised in that：Described induction electrode layer and driving electrodes
Layer includes interior circuit and external circuit respectively, and the width of the micro nano structure of described interior circuit is 500nm-10um, and depth-to-width ratio is less than
1:1, the sheet resistance value of described interior circuit is less than 50 Ou Fang, and the width of the micro nano structure of described external circuit is 500nm-10um, line
Away from for 10um-50um, depth-to-width ratio is less than 1:1, the sheet resistance value of described external circuit is less than 10 Ou Fang.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103699281A (en) * | 2013-12-12 | 2014-04-02 | 苏州维业达触控科技有限公司 | Capacitance-type touch screen assembly |
| CN103744571A (en) * | 2014-01-26 | 2014-04-23 | 苏州维业达触控科技有限公司 | Ultrathin touch sensor and manufacturing method thereof |
| CN104345966A (en) * | 2014-05-31 | 2015-02-11 | 深圳市骏达光电股份有限公司 | Sensing component for touch screens and manufacturing method of sensing component |
| CN105045456A (en) * | 2015-09-07 | 2015-11-11 | 张家港康得新光电材料有限公司 | Metal grid transparent conductive body, preparation method thereof and capacitive touch screen |
| CN105892756A (en) * | 2016-06-24 | 2016-08-24 | 武汉华星光电技术有限公司 | Touch screen, display device and preparation method of touch screen |
| CN106445237A (en) * | 2016-10-11 | 2017-02-22 | 武汉华星光电技术有限公司 | Flexible built-in touch structure and preparation method |
| CN108376042A (en) * | 2018-05-04 | 2018-08-07 | 蓝思科技（长沙）有限公司 | Metal grill sensor and touch screen and preparation method thereof and equipment |
| CN111076849B (en) * | 2019-12-23 | 2021-11-12 | 山东大学 | PVDF flexible pressure sensor and preparation method and system thereof |
| CN113766736A (en) * | 2020-06-01 | 2021-12-07 | 苏州苏大维格科技集团股份有限公司 | Thin film processing system and method |
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