WO2016064177A1

WO2016064177A1 - Color display device and display method for same

Info

Publication number: WO2016064177A1
Application number: PCT/KR2015/011109
Authority: WO
Inventors: 이동진; 장보승; 주재현
Original assignee: 주식회사 나노브릭
Priority date: 2014-10-24
Filing date: 2015-10-21
Publication date: 2016-04-28

Abstract

The present invention relates to a color display device configured of a display layer including a color display material, and a magnetic layer including a magnetic material stacked on top of the display layer to form a pattern. By stacking the patterned magnetic layer on top of the display layer of the color display material, the effects are obtained by being able to present certain colors, images, and information by means of the color display material, so that a user can easily discern same. Also, the color display device of the present invention is configured of: a display layer including a color display material; and a first magnetizing material layer including a magnetizing material and stacked at the bottom of the display layer. Because the color display material is disposed at the bottom of the display layer, the effects are obtained by being able to stably control the arrangement and spacing of color display material particles on an externally applied magnetic field, so that formed colors, images, and information can be maintained even after the magnetic field is removed.

Description

Color display device and its display method

The present invention relates to a color display device and a display method thereof, and more particularly, to stack a patterned magnetic layer on an upper portion of a display layer including a color display material, or to form a magnetization material under a display layer containing a color display material. The present invention relates to a color display device capable of displaying a specific color, an image, and information by a color display material by stacking layers, and a method of displaying the same.

In the case of photonic crystal materials and their application products using a conventional magnetic field to display a specific color or image, by placing a magnet under the photonic crystal material reacting to the magnetic field for display, or by contacting an external magnet to the photonic crystal material corresponding to the display unit The desired color or image is shown.

For example, a display device in which a first component including a color variable material disclosed in Korean Unexamined Patent Publication No. 10-2011-0053929 and a second component including a magnetic field generating region are combined, and disclosed in Korean Patent Application Publication No. 10-1061902 There is a display device including a display unit in which the wavelength of the reflected light is determined according to the intensity of the magnet generated from the recording unit generating the magnetism.

However, when the magnet is disposed under the photonic crystal material, a specific color or image is fixed, and thus the range of products to which the magnet is applied is limited. In the case of displaying an image, there is a problem in that a field of view is blocked by a magnet in contact, causing trouble to check a color or an image.

In addition, Korean Patent Laid-Open No. 10-2009-0086192 discloses a display device for displaying information by controlling an interval between particles by applying an electric field in a state where photonic crystal particles are dispersed.

However, the prior art only describes the point of causing color change by controlling the spacing of particles, and does not disclose a detailed technique applicable to various fields by optimizing the structure of the color display device itself.

In addition, Korean Patent Laid-Open Publication No. 10-2013-0085866 discloses a display device for controlling reflected light of irradiated light by applying an electric field to a solution containing a colloidal photonic crystal and adjusting the spacing of particles.

However, the display device only describes the color change by adjusting the refractive index of particles, and detailed technology applicable to various fields by optimizing the structure of the color display device itself is not disclosed. There is a limitation in applying to a security medium, a display medium, and the like using a display device, and it is difficult to efficiently design a structure of a color display device for adjusting the arrangement and spacing of target particles.

The present invention has been made to solve the above problems of the prior art, by laminating a patterned magnetic layer on top of the display layer of the color display material to display a specific color, image, information by the color display material, the user easily It is an object of the present invention to provide a color display device and a method of displaying the same.

In addition, it is configured in the form of stacking a separate material capable of imparting a magnetic field, such as a magnetic material instead of the medium of the color display material, in particular, by placing it below the display layer containing the color display material, the magnetic field applied from the outside It is an object of the present invention to provide a color display device and a method of displaying the same, in which colors, images, and information realized by stably adjusting the arrangement and spacing of photonic crystals or particles are maintained even after the magnetic field is removed.

In addition, an object of the present invention is to enable various applications of the color display device by providing various structures capable of efficiently causing color change.

The photonic crystal display device and the display method of the present invention for solving the above problems is a display layer comprising a color display material; And a magnetic layer including a magnetic material stacked to form a pattern on the display layer.

In this case, the magnetic layer may form a pattern by combining two or more magnetic bodies having different strengths of the magnetic field, and the magnetic bodies may be permanent magnets or electromagnets.

In addition, the color, image or information embodied in the pattern may be selectively erased by the proximity of an external magnetic material that is a permanent magnet or an electromagnet.

In addition, a second material layer may be interposed between the display layer and the magnetic layer, the second material layer having different magnetic permeability and having a constant transmittance, wherein the second material layer may be a color filter. have.

In addition, instead of the magnetic layer containing a magnetic material may be composed of a magnetic material layer containing a magnetic material.

In addition, a magnetic body may be disposed and stacked such that the entire upper surface of the magnetic layer is an N pole or an S pole.

In addition, the photonic crystal display device and the display method according to another embodiment of the present invention is a display layer comprising a color display material; And a first magnetization material layer including a magnetization material stacked under the display layer.

In this case, the first magnetic material layer may be independently disposed to maintain a predetermined area and a gap under the display layer to form a pixel.

In addition, a second magnetic material layer may be stacked on a lower side or a side of the first magnetic material layer, and a magnetic material that is a permanent magnet or an electromagnet may be stacked on the lower or side surface of the first magnetic material layer.

In addition, a second magnetic material layer may be stacked below the first magnetic material layer, and a blocking layer may be interposed between the first magnetic material layer and the second magnetic material layer to selectively block a magnetic field. Via holes or connectors connecting the first magnetic material layer and the second magnetic material layer may be formed.

In addition, a third magnetic material layer may be interposed between the first magnetic material layer and the blocking layer.

In addition, a plurality of second magnetic material layers which are independently disposed by maintaining a constant area and a gap are stacked below the first magnetic material layer which is independently disposed while maintaining a constant area and a gap under the display layer. A blocking layer selectively blocking a magnetic field is interposed between the first magnetic material layer and the second magnetic material layer, and a permanent magnet or an electromagnet may be connected to each of the plurality of first and second magnetic material layers.

At this time, the first and the second magnetic material layer is stacked in a line shape having a predetermined width, the line constituting the first magnetic material layer and the line constituting the second magnetic material layer is laminated so as to perpendicularly cross each other. Can be.

The color display device and the display method according to the present invention exhibit a variety of colors through discoloration by the magnetic field of the magnetic layer compared to the display layer without the magnetic layer pattern by stacking the patterned magnetic layer on top of the display layer of the color display material. The color change and color diversity are further improved by realizing the discoloration effect due to the proximity of external magnetic material, so that the user can easily identify the specific color, image, and information by the color display material. It can be used as a color display device for security, identification, and forgery prevention of various products such as tape and tape.

In addition, by disposing a separate material layer such as magnetization material instead of the medium of the color display material under the display layer containing the color display material, color does not implement or discolor when no magnetic field is applied from the outside. The arrangement and spacing of the photonic crystals or particles are stably controlled by a magnetic field applied from the outside, thereby maintaining the color, image, and information implemented even after the magnetic field is removed.

In addition, by providing various structures capable of efficiently causing color change, the color display device can be applied to various fields.

1 is a side view illustrating a stacked structure of a color display device according to an exemplary embodiment of the present invention.

2 is a side view illustrating a stacked structure of a color display device according to still another embodiment of the present invention.

3 is a conceptual diagram illustrating a color region of a ferrite magnet placed on a display layer.

4 is a side view illustrating a laminated structure of a color display device including an external magnetic material according to another exemplary embodiment of the present invention.

5 is a side view illustrating a stacked structure of a color display device including a second material layer according to another embodiment of the present invention.

6 is a side view illustrating a lamination structure and an operating principle of a color display device according to still another exemplary embodiment of the present invention.

7 is a conceptual diagram illustrating a structure of a color display device according to still another embodiment of the present invention.

8 is a conceptual diagram illustrating a structure of a color display device in which a second magnetic material layer is stacked, according to another embodiment of the present invention.

9 is a conceptual diagram illustrating a structure of a color display device in which magnetic materials are stacked according to still another embodiment of the present invention.

10 is a conceptual diagram illustrating a structure of a color display device with a blocking layer according to another embodiment of the present invention.

FIG. 11 is a conceptual diagram illustrating a structure of a color display device in which a via hole or a connecting body is formed to connect a first magnetic material layer and a second magnetic material layer, according to another exemplary embodiment.

FIG. 12 is a conceptual diagram illustrating a structure of a color display device including a third magnetization material layer according to still another embodiment of the present invention.

FIG. 13 is a blocking layer selectively blocking a magnetic field between a first magnetic material layer and a second magnetic material layer according to another embodiment of the present invention, wherein each of the plurality of first and second magnetic material layers A conceptual diagram illustrating a structure of a color display device in which a permanent magnet or an electromagnet is connected.

DETAILED DESCRIPTION The following detailed description of the invention refers to the accompanying drawings that illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention.

It should be understood that the various embodiments of the present invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be embodied in other embodiments without departing from the spirit and scope of the invention with respect to one embodiment. In addition, it is to be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention.

The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention, if properly described, is defined only by the appended claims, along with the full range of equivalents to which such claims are entitled. In the drawings, like reference numerals refer to the same or similar functions throughout the several aspects, and length, area, thickness, and the like may be exaggerated for convenience.

In the display device of the present invention, each layer is laminated, wherein the lamination is performed through an adhesive layer, and may be in a state in which a layer and a layer are bonded together, or in a state in which a portion may be separated by including a non-adhesive layer. And a lamination structure capable of removing one layer as necessary via a peelable adhesive layer. Such a laminated structure can be selectively employed in accordance with the application of the display device of the present invention, for example, a color display label, a color display sticker, a color display card and the like.

Referring to FIG. 1, the photonic crystal display device of the present invention includes a display layer 100 including a color display material and a magnetic layer 200 made of a magnetic material stacked to form a pattern on the display layer. Since the magnetic layer 200 is stacked to form a pattern 300 thereon, the magnetic layer 200 may display various types of information such as a letter or an image according to the shape of the pattern 300, and the color of the display layer magnetized by the magnetic layer. Through the change, various information can be displayed. The pattern 300 corresponds to a portion of the display layer 100 that is not covered by the magnetic layer 200.

In FIG. 1, the case of a label is shown as an example. The sheet constituting the label is formed of the magnetic layer 200 on which the display layer 100 and the pattern 300 are formed, and may display specific colors, images, and information by color display materials constituting the display layer 100. Since the magnetic body constituting the magnetic layer 200 is disposed on the upper portion of the color display material except for an area in which the magnetic layer 200 is located, various types of information may be displayed on the surface of the label through the shape of the color and the pattern.

In addition, when the width, area, and shape of the pattern 300 are adjusted by the arrangement of the magnetic layer 200, the intensity of the magnetic field applied to the area corresponding to the display layer 100 is changed, thereby realizing the color and image. , The information can be adjusted, and the color, image, information, and the like, which are applied to the area corresponding to the display layer 100 including the color display material, can be controlled by controlling the thickness of the magnetic material disposed thereon and the intensity of the magnetic field. have.

In the present invention, the magnetic body constituting the magnetic layer 200 may be a permanent magnet or may be an electromagnet. In the case of the electromagnet, an electric field must be applied, and wires for applying electricity to one side and the other side of the magnetic layer 200 may be connected.

In the present invention, the color display material is magnetized by a magnetic field to induce particle alignment, and is maintained in a magnetized state by remnant magnetization even after the magnetic field is blocked. Various types of photonic crystal materials and ferromagnetic materials ( Ferromagnetic materials, superparamagnetic materials, and mixtures of two or more particles with different saturation magnetization values can be used.

The photonic crystal material may be silicon (Si), titanium (Ti), barium (Ba), strontium (Sr),

Iron (Fe), nickel (Ni), cobalt (Co), lead (Pb), aluminum (Al), copper (Cu), silver (Ag), gold (Au), tungsten (W), molybdenum (Mo) And compounds such as zinc (Zn) and zirconium (Zr) and oxides and nitrides containing them. In addition, styrene, pyridine, pyrrole, aniline, pyrrolidone, acrylic acid, acrylate, urethane, thiophene, carbazole , Organic polymer containing at least one unit of fluorene, vinylalcohol, ethylene glycol, ethoxy acrylate or polystyrene, polyethylene, poly And polymer materials such as propylene, polyvinyl chloride, polyethylene terephthalate, and the like.

The photonic crystal material may be configured in a form in which a material having a charge is coated on particles or clusters having no charge. For example, the surface is processed by an organic compound having particles (carboxylic acid groups, ester groups, acyl groups), the surface is processed (or coated) by an organic compound having a hydrocarbon group ( Or coated) particles, particles whose surfaces are processed (coated) by a complex compound containing halogen (F, Cl, Br, I, etc.) elements, including amines, thiols, and phosphines. Particles whose surface is processed (coated) by the coordination compound, and particles having a charge by forming radicals on the surface may correspond thereto. As described above, the surface of the particles of the photonic crystal material may be coated with a material such as silica, a polymer, a polymer monomer, or the like, so that the particles may have high dispersibility and stability in a solvent.

On the other hand, the photonic crystal material may have a particle diameter of several nm to several hundred μm, but is not necessarily limited thereto, and the refractive index and the solvent of the particle by the Bragg 'Law when the particles are arranged at a constant distance by an external electric field. In conjunction with the refractive index of may be set to the size of the particle may be included in the photonic crystal wavelength band of the visible light region.

In addition, in order to configure the photonic crystal material to have a unique color, it may be given a specific color through the oxidation water control or coating such as inorganic pigments, pigments. For example, Zn, Pb, Ti, Cd, Fe, As, Co, Mg, Al, etc., including chromophores, may be used in the form of oxides, emulsions, lactates, and the like. Fluorescent dyes, acid dyes, basic dyes, mordant dyes, sulfide dyes, bat dyes, disperse dyes, reactive dyes and the like can be used.

In addition, the photonic crystal material may be a material having a specific structural color to display a specific color. For example, particles such as silicon oxide (SiO _x ) and titanium oxide (TiO _x ) may be formed to be uniformly arranged at regular intervals in a medium having a different refractive index to reflect a light having a specific wavelength. Particles with a photonic crystal structure may have different structural colors depending on the viewing angle. As the magnetic field is applied, the photonic crystal particles are moved by the arrangement of the magnetic particles, thereby expressing different structural colors according to the magnetic direction and intensity. can do.

In addition, in order to improve dispersibility and stability of the color display material, silica, a polymer, a polymer monomer, or the like may be coated on the particle surface.

The color display material may be dispersed in a medium such as fluid, gel, or air as an auxiliary means for stably maintaining the position and arrangement of the particles. The medium is preferably composed of a light transmissive material, and may include at least one component of an inorganic pigment, a dye, a fluorescent material, a phosphor, a light emitting material, and a material having a structure color to reflect light of a specific wavelength. .

The medium may be one having a specific gravity similar to that of the color display material so that the color display material may be uniformly dispersed.

The color display material having magnetic properties is particles containing single or different metals and oxide particles.

In the case of a metal, a metal nitrate compound, a metal sulfate compound, a metal fluoracetoacetate compound, a metal halide compound, a metal perchloroate compound, a metal sulfamate compound, a metal styrate compound and an organometallic compound Magnetic precursors selected from the group consisting of: alkyl trimethylammonium halide-based cationic ligands, alkyl acids, trialkylphosphines, trialkylphosphine oxides, neutral ligands such as alkylamines, alkylthiols, sodium alkyl sulfates, sodium alkylcarboxylates The amorphous metal gel may be prepared by adding a ligand selected from the group consisting of anionic ligands such as sodium alkyl phosphate, sodium acetate, and the like to a solvent to dissolve it, and heating the phase to crystalline particles.

At this time, the magnetic properties of the particles finally obtained by containing heterogeneous precursors may be enhanced, or various magnetic materials such as superparamagnetism, paramagnetic, ferromagnetic, antiferromagnetic, ferrimagnetic, and diamagnetic may be obtained.

In the case of a fluid, various kinds of solvents can be used, for example, water, trichloroethylene, carbon tetrachloride, diisopropyl ether, toluene, methyl- t-butyl ether (Methyl-t-Bytyl Ether), xylene, benzene (Benzene), diethyl ether, dichloromethane, 1,2-dichloroethane (1,2-Dichloroethane ), Butyl Acetate, Isopropanol, Isopropanol, Butanol, n-Butanol, Tetrahydrofuran, Propanol, n-Propanol, Chloroform, Ethyl acetate, 2-Butane 2-Butanone, Dioxane, Acetone, Methanol, Ethanol, Acetonitrile, Acetic Acid, Dimethylformamide, Dimethylsulfoxide (Dimethyl sulfoxide), propylene carbonate, N, N-dimethylformamide (N, N-Dimethylformamide), dimethylacetamide, N-methylpyrrolidone, etc. are mentioned.

Referring to another embodiment of the present invention with reference to FIG. 2, a pattern may be formed by combining two or more magnetic bodies (200, 200 ') having different magnetic field strengths.

In this way, since the intensity of the magnetic field applied to the color display material of the display layer varies depending on the part of the pattern, various color patterns can be realized.

That is, when the magnetic field strengths of the magnetic body 200 and the magnetic body 200 'are different from each other, since the magnetic field received by the display layer 100 positioned below is different, the degree of discoloration of the photonic crystal material included in the display layer 100 is changed. As a result, the color implemented in the pattern 300 is changed.

In order to confirm the implementation of the pattern according to the method of forming the magnetic layer, when the ferrite magnet is a magnetic material, the strength of the magnetic field was measured according to the size and thickness. As shown in FIG. 3, a donut-shaped ferrite magnet is placed on the display layer, and the widths of the areas (B) to (D) according to the intensity and color change of the magnetic field of the magnet body (area A) and the width Magnetic field was measured. The results are shown in Table 1 below.

자석의 크기(㎜)(외부×내부×높이)Size (mm) of magnet (outer X inside X height)	A(Gauss)A (Gauss)	B(Gauss/㎜)B (Gauss / mm)	C(Gauss/㎜)C (Gauss / mm)	D(Gauss/㎜)D (Gauss / mm)
17.5×7.5×3.017.5 × 7.5 × 3.0	705705	81/681/6	70/670/6	2~5/302 ~ 5/30
27.0×12.5×6.027.0 × 12.5 × 6.0	10151015	154/6154/6	63/1063/10	2~5/382 ~ 5/38
40.0×22.0×6.040.0 × 22.0 × 6.0	10541054	190/6190/6	71/1471/14	2~5/552 ~ 5/55

Referring to the results of Table 1, when the thickness of the magnetic layer and the width of the pattern are narrowed, the intensity of the magnetic field increases, so the color change rate of the display layer increases, and the strength of the magnetic field decreases as the distance from the outside of the magnetic layer constituting the pattern increases. You can see the tendency to do this.

Next, when two magnets were placed, when two magnets were arranged to face opposite poles, the magnetic field strength of the regions between the magnets when two magnets were placed opposite to each other were measured. The results are shown in Table 2.

	자석의 크기(㎜)(17.5×7.5×3.0)Magnet size (mm) (17.5 × 7.5 × 3.0)	자석의 크기(㎜)(27.0×12.5×6.0)Magnet size (mm) (27.0 x 12.5 x 6.0)	자석의 크기(㎜)(40.0×22.0×6.0)Magnet size (mm) (40.0 × 22.0 × 6.0)
자석 1개1 magnet	81Gauss81Gauss	145Gauss145 Gauss	190Gauss190 Gauss
동일극 대향Facing the same pole	160Gauss160 Gauss	319Gauss319 Gauss	347Gauss347 Gauss
반대극 대향Counter-opposite	3Gauss3Gauss	12Gauss12Gauss	6Gauss6Gauss

Looking at Table 2, it can be seen that the magnetic field between the magnets are amplified when the two magnets are opposed to the same pole, the magnetic field between the magnets is attenuated when facing the opposite pole.

Therefore, the intensity of the magnetic field applied to each area of the display layer 100 is controlled through various modifications, such as forming a pattern with magnetic materials having different magnetic fields or arranging poles of neighboring magnetic materials forming the pattern in the same or opposite poles. This will allow you to implement a variety of color patterns.

Referring to another embodiment of the present invention with reference to Figure 4, the color, image or information implemented in the pattern by the proximity of the external magnetic material 400 disposed on the display layer 100 containing the color display material A display device for selectively erasing may be implemented.

The external magnetic material 400 may be a permanent magnet, an electromagnet, or a device (for example, a magnet provided in a speaker of a mobile phone terminal) including the permanent magnet or an electromagnet. The change can be visually identified by the user.

In addition, referring to FIG. 5, another embodiment of the present invention will be described with reference to FIG. 5. In order to control colors, images, and information that are applied to an area corresponding to the display layer 100 including the color display material, the color display material and the magnetic material. The second material layer 500 having a different transmittance between the magnetic material and the magnetic permeability and having a certain transmittance may be disposed therebetween.

In this case, when the second material layer 500 is a color filter, the range of colors implemented by the color display material may be widened and the intensity of the wavelength generated from the display layer 100 may be increased.

In addition, the color embodied in the color display material may directly display information on the second material layer 500 to indicate additional information.

Referring to another embodiment of the present invention with reference to FIG. 6A, a display layer 100 including a color display material responsive to a magnetic field may be disposed below and display specific colors, images, and information by the color display material. The magnetic material layer 250 may be disposed on the display layer 100 except for a region to form a pattern. Thus, as shown in FIG. 6B, color, image, and information of the display layer 100 may be adjusted by applying magnetism to the magnetic material layer 250 by an external magnetic material 400.

When the pattern is formed of the magnetic material layer 250, when the magnetic field is applied by the external magnetic material 400, the magnetic material becomes magnetic. Therefore, the display layer 100 may have a magnetic field only at a portion near the external magnetic material 400. The change of color occurs. Therefore, the color contrast is vivid in the display layer 100 'of the portion of the magnetic material layer 250 having the magnetic region and the display layer 100 of the portion of the non-magnetic portion of the magnetic material layer 250, so that the user can easily visually check the pattern. You can get it.

When the width, area, and shape of the pattern region in which the magnetization material layer of the display layer 100 is not laminated are adjusted, a magnetic field is applied to the magnetization material layer 250, and then the display layer 100 ′ including the color display material. Since the intensity of the magnetic field on the corresponding area can be adjusted, it is possible to adjust the color, image, and information implemented through this.

In addition, by adjusting the thickness of the magnetic material layer 250 disposed above and the intensity of the magnetic field applied by the external magnetic material 400 is applied to the pattern region corresponding to the display layer 100 containing the color display material You can adjust colors, images, and information.

In addition, when a pattern is formed by combining two or more magnetic permeability materials having different magnetic permeability, colors, images, and information that are applied to an area corresponding to the display layer 100 may be adjusted.

In addition, by stacking and arranging magnetization materials having different strengths of two or more magnetic fields, colors, images, and information implemented on the region corresponding to the display layer 100 may be controlled.

In addition, colors, images, and information implemented by the external magnetic material 400 disposed on the display layer 100 may be selectively erased.

Also in the present embodiment, the magnetic material and the magnetic permeability are different between the display layer 100 and the magnetic material in order to adjust the color, image, and information implemented in the pattern region of the display layer 100, and a constant transmittance is ensured. The second material layer may be disposed, and the color filter may be used as the second material layer in order to widen the range of colors embodied in the pattern and increase the intensity of the wavelength represented by the display unit.

In addition, information may be directly displayed on the second material layer to indicate additional information through color implementation of the pattern. The display of such information may be implemented by using an electromagnet, and specific colors, images, and information may be displayed by driving the electromagnet.

As another embodiment of the color display device of the present invention, the entire upper surface of the magnetic layer is arranged to be the north pole or the south pole, that is, one pole is formed on one side, thereby amplifying the magnetic field by the approach of an external magnetic material. It may also increase the color change of the layer. In this case, since the color of the display layer changes according to the distance between the external magnetic material and the magnetic layer, it is possible to implement a display device in which the color and image of the pattern change according to the approaching degree of the external magnetic material.

Referring to FIG. 7, a color display device according to another exemplary embodiment of the present invention will be described. The display layer 100 includes a color display material; And a first magnetic material layer 200 formed of a magnetic material stacked under the display layer.

In the color display device, when the external magnetic material 300 such as a permanent magnet or an electromagnet is approached from the outside, the magnetization is imparted to the magnetic material, so that the color display material particles of the display layer are arranged by the magnetic field generated from the magnetic material. The spacing, or both the arrangement and the spacing, is adjusted to reveal specific colors, images, and information.

If the magnetic material is not used, the overall color change effect is reduced, so the magnetic material acts as an important factor for improving the performance as a display device by making the color change stand out.

Since the specific color, image, and information are maintained even after the external magnetic material 300 is removed, the specific color, image, and information can be used as a display device such as a card-shaped product or a tag-shaped product.

For example, in the case of a card type product, a color change may be generated when the mobile phone is approached by using a magnet mounted on the speaker of the mobile phone.

In addition, the first magnetic material layer 200 is disposed independently of the display layer 100 by maintaining a predetermined area and a distance therebetween, so that the magnetization in the form of a plurality of separated pixels or patterns in one display layer 100 is provided. The material layer may be disposed.

Accordingly, each of the first magnetic material layers 200 may serve as each pixel.

In addition, by adjusting the direction of the magnetic field applied by the external magnetic material 300, the period of the magnetic field, the intensity of the magnetic field to adjust the intensity and direction of the magnetic applied to the magnetic material to remove the previously implemented colors, images, information or You can also change it.

Referring to FIG. 8, a color display device according to another embodiment of the present invention may include a display layer 100 including a color display material; Comprising a first magnetic material layer 200 made of a magnetic material stacked on the lower portion of the display layer, characterized in that the second magnetic material layer 210 is laminated on the lower or side surface of the first magnetic material layer. .

In this structure, when the first magnetic material layer 200 is separately disposed and functions as a pixel, the first magnetic material in which the second magnetic material layer 210 is separated to perform a function of an independent pixel. May be selectively connected to the layer 200.

At this time, the direction of the magnetic field, the period of the magnetic field, the magnetic field applied to the second magnetic material layer 210 connected to the first magnetic material layer 200 corresponding to each pixel by an external magnetic material located in an arbitrary direction By adjusting the intensity, by adjusting the intensity and direction of the magnetic material provided to the magnetization material, it is possible to remove or change the color, image, and information previously implemented for each pixel.

Referring to FIG. 9, a color display device according to still another embodiment of the present invention includes a display layer 100 including a color display material; A magnetic material composed of a first magnetization material layer 200 made of a magnetization material stacked below the display layer, and a permanent magnet or an electromagnet in place of a second magnetization material layer on the bottom or side of the first magnetization material layer 200. 250 is laminated.

That is, by adjusting the direction of the magnetic field, the period of the magnetic field, and the strength of the magnetic field of the magnet or the electromagnet connected to the first magnetic material layer corresponding to each pixel, the intensity and direction of the magnetic force applied to the magnetic material are adjusted before each pixel. You can remove or change the colors, images and information.

Referring to FIG. 10, a color display device according to still another embodiment of the present invention includes a display layer 100 including a color display material; Comprising a first magnetic material layer 200 made of a magnetic material stacked on the lower portion of the display layer, the second magnetic material layer 210 is stacked below the first magnetic material layer 200, the second A blocking layer 400 that selectively blocks a magnetic field is interposed between the first magnetic material layer 200 and the second magnetic material layer 210.

The blocking layer 400 is a layer which is influenced only by a magnetic field of a constant intensity, so that the second magnetic material layer 210 stacked on the blocking layer is composed of at least two independent channels. And regions where the independent channels of the second magnetic material layer 210 of the third layer overlap with each other may serve as independent pixels of the color display material.

The structure of the display device may be used in a packaged product such as an activation package because, for example, when the user pulls out the blocking layer 400, color change occurs and color display is possible.

Referring to FIG. 11, a color display device according to still another embodiment of the present invention includes a display layer (not shown) including a color display material; The first magnetic material layer 200 is formed of a magnetic material stacked on the lower portion of the display layer, and the second magnetic material layer 210 is stacked below the first magnetic material layer 200. A blocking layer 400 for selectively blocking a magnetic field is interposed between the first magnetic material layer 200 and the second magnetic material layer 210, and the first magnetic material layer 200 and the second magnetic material layer 210 are interposed. ) Is characterized in that via holes or connectors 500 are formed.

The via hole or the connector 500 is connected to the first magnetic material layer 200 and the second magnetic material layer 210 to be independent of the color display material different from the stacking structure of FIG. 4 in an area where independent channels overlap. Since it serves as a pixel, another type of display device is configured.

12, a color display device according to still another embodiment of the present invention includes a display layer (not shown) including a color display material; The first magnetic material layer 200 is formed of a magnetic material stacked on the lower portion of the display layer, and the second magnetic material layer 210 is stacked below the first magnetic material layer 200. A blocking layer 400 for selectively blocking a magnetic field is interposed between the first magnetic material layer 200 and the second magnetic material layer 210, and between the first magnetic material layer 200 and the blocking layer 400. The third magnetic material layer 220 is characterized in that the interposition.

In this stacked structure, in the region where the independent channels of the second magnetic material layer and the third magnetic material layer (third layer) overlap, the second magnetic material layer is formed on the overlapping first layer to form the color display material. You can adjust the bistable and the characteristics of color, image, and information display.

Regions in which the independent channels of the first layer and the independent channels of the third layer overlap each other are composed of each independent pixel, and a magnetic field applied from the outside to independently control the strength and direction of the magnetic field applied to each pixel. Intensity and direction of can be adjusted by applying to each channel independently.

Referring to FIG. 13, a color display device according to another exemplary embodiment of the present invention may include a display layer (not shown) including a color display material; The first magnetic material layer 200 is formed of a magnetic material stacked on the lower portion of the display layer, a plurality of agents are independently disposed by maintaining a predetermined area and spacing below the first magnetic material layer 200 The second magnetic material layer 210 is stacked, and a blocking layer 400 for selectively blocking a magnetic field is interposed between the first magnetic material layer 200 and the second magnetic material layer 210. Permanent magnets or electromagnets (magnet a, magnet b, magnet 1, magnet 2) are connected to each of the first and second magnetic material layers.

In this case, the first and second magnetic material layer is stacked in the form of a line having a predetermined width, the line constituting the first magnetic material layer 200 and the line constituting the second magnetic material layer 210 is It can be stacked to cross perpendicular to each other.

That is, the feature of the present invention is that the magnets and the electromagnets (magnet a, magnet b, magnet 1, magnet 2) are 1: 1 matched to each channel in order to adjust the strength and direction of the magnetic field applied from the outside. do.

Through this structure, the magnetic field may interfere with each other by varying the intensity and direction of the electric field applied to each pixel, thereby displaying specific colors, images, and information.

In addition, a specific color, image, and information may be displayed or erased by adjusting or removing the intensity of the magnetic material applied to the magnetic material by using the second external magnetic material in the area corresponding to the display unit.

In this case, a superconductor for generating a strong magnetic field may be applied to the material corresponding to the magnetizing material.

The color display device and the display method according to the present invention can realize various colors different from the existing display layer through discoloration by magnetism through a patterned magnetic layer stacked on the display layer of the color display material, and an external magnetic material. By causing the magnetic field amplification, interference, etc. by the proximity of the specific discoloration effect can be realized. Accordingly, by further improving the color change and color diversity, the user can easily identify the specific color, image, and information by the color display material, so that the user can easily identify it. It can be used as a color display to prevent forgery and alteration.

Various structures that cause discoloration of the present invention can be variously applied to the application of the color display device.

As described above, the present invention has been described with reference to preferred embodiments, but various modifications and changes are possible by those skilled in the art without departing from the spirit of the present invention and without departing from the spirit of the present invention. The examples are to be regarded as falling within the scope of the invention and the appended claims.

Claims

A display layer comprising a color display material;

A magnetic layer including a magnetic material stacked to form a pattern on the display layer;

Color display device, characterized in that consisting of.
The method according to claim 1,

And the magnetic layer forms a pattern by a combination of two or more magnetic bodies having different magnetic field strengths.
The method according to claim 1 or 2,

And the magnetic material is a permanent magnet or an electromagnet.
The method according to claim 1 or 2,

Color display device characterized in that selectively erase the color, image or information implemented in the pattern by the proximity of the external magnetic material.
The method according to claim 4,

The external magnetic material is a color display device, characterized in that the permanent magnet or electromagnet.
The method according to claim 1 or 2,

And a second material layer between the display layer and the magnetic layer, the second material layer having a different transmittance and a different permeability between the magnetic layer and the magnetic layer.
The method according to claim 6,

And the second material layer is a color filter.
The method according to claim 1 or 2,

The magnetic layer is a color display device, characterized in that the magnetic material layer containing a magnetic material.
The method according to claim 1 or 2,

And a magnetic material disposed and stacked such that the entire upper surface of the magnetic layer is an N pole or an S pole.
And a magnetic layer including a display layer including a color display material and a magnetic layer stacked to form a pattern on the display layer, wherein the color, image, or information is displayed by the pattern.
A display layer comprising a color display material;

A first magnetic material layer including a magnetic material stacked under the display layer;

Color display device, characterized in that consisting of.
The method according to claim 11,

And the first magnetic material layer is disposed independently of the display layer by maintaining a predetermined area and a gap therebetween.
The method according to claim 11 or 12,

And a second magnetic material layer is stacked below or on the side of the first magnetic material layer.
The method according to claim 11 or 12,

And a magnetic material, which is a permanent magnet or an electromagnet, stacked on a lower side or a side of the first magnetic material layer.
The method according to claim 11 or 12,

A second magnetic material layer is stacked below the first magnetic material layer,

And a blocking layer selectively blocking a magnetic field between the first magnetic material layer and the second magnetic material layer.
The method according to claim 15,

And a via hole or a connecting body connecting the first magnetic material layer and the second magnetic material layer to each other.
The method according to claim 15,

And a third magnetic material layer interposed between the first magnetic material layer and the blocking layer.
The method according to claim 12,

A plurality of second magnetic material layers are disposed on the lower portion of the first magnetic material layer independently of each other by maintaining a predetermined area and interval,

A blocking layer for selectively blocking a magnetic field is interposed between the first magnetic material layer and the second magnetic material layer,

And a permanent magnet or an electromagnet connected to each of the plurality of first and second magnetic material layers.
The method according to claim 18,

The first and second magnetic material layer is stacked in the form of a line having a predetermined width,

And a line constituting the first magnetic material layer and a line constituting the second magnetic material layer are stacked vertically to cross each other.
A display layer including a color display material and a first magnetization material layer including a magnetization material stacked below the display layer, wherein the magnetization of the magnetization material causes particle arrangement, spacing or arrangement of the color display material; Color display method characterized in that all the intervals are adjusted.