JP2003295234A - Multi-color display panel and manufacturing method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display panel realizing high definition and high quality multi-color and color display by exactly arranging at desired positions a plurality of display purpose microcapsules varied in an optical reflection characteristic by applying an electric field thereto. <P>SOLUTION: The multi-color display panel of a structure in which a front substrate 1 having a transparent and conductive 1st electrode 1b on a transparent base material 1a and a photosensitive conductive layer 1c on the 1st electrode, and a rear face substrate 3 having 2nd electrodes of matrix electrodes 3b on a base material 3a hold and laminate between them a cell layer 2 having cell frames which are formed of a photopolymer at the positions corresponding to the matrix electrodes by the lithography method and house the display purpose microcapsules at predetermined positions corresponding to the matrix electrodes, so that the 1st electrodes on the front substrate and the 2nd electrodes on the rear face substrate 3 are faced to each other. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multicolor display panel which utilizes an electrophoretic phenomenon or a rotation phenomenon by applying an electric field to a display microcapsule in which electrophoretic particles and rotating particles are dispersed in a dispersion medium. The manufacturing method is related.

[0002]

2. Description of the Related Art In recent years, with the development of information equipment, information display has been made in various forms. A CRT (cathode ray tube), a liquid crystal display, and the like are mainly used for displaying variable information. A light-emitting display such as a liquid crystal display of a type using a CRT or a backlight is not suitable for reading a document or the like because it causes eyestrain of an object to be seen when used for a long time.

On the other hand, a liquid crystal display of the type that does not use a backlight has a problem in that the darkness of the screen appears significantly due to the use of a polarizing plate and the visibility is poor. Furthermore, the images displayed on these displays have no memory,
It has the drawback that it disappears at the same time when the electrical energy supply is stopped.

So-called PDA, which will become more popular in the future
In addition to the display of portable information devices such as (personal digital assistants) and electronic books, printed materials such as newspapers, books, magazines, posters, etc., and replacement of hard copies output from printers on paper with display It is considered that it is necessary that the eyes do not easily get tired even when used for a long time, the visibility is good, the power consumption is low, and the image memory property is provided.

As a non-emissive display that satisfies these requirements to some extent, an electrophoretic display device and a two-color ball display device have been conventionally known.

A large number of electrophoretic display devices utilizing the electrophoretic phenomenon by applying an electric field of electrophoretic particles dispersed in a dispersion medium have been reported as shown in Japanese Patent Publication No. 50-15115.

[0007] However, although the conventional technique can display a single color, it is difficult to display a multicolor image. This is because it was difficult to arrange the multicolor electrophoretic particles in predetermined pixels.

Therefore, a structure in which a color filter is superposed on monochromatic electrophoretic particles is also known.

In this structure, the color transmitted through the color filter is scattered in the microcapsule and travels as stray light to the pixels of the other color filters at a constant rate, so that the light amount is reduced and the contrast is lowered. there were.

[0010]

SUMMARY OF THE INVENTION The present invention has been made in order to solve such a problem, and it is an object of the present invention to provide a plurality of display devices whose optical reflection characteristics are changed by application of an electric field. It is an object of the present invention to provide a display panel capable of high-definition and high-quality display of a plurality of colors and colors by securely installing the microcapsules at a desired position, and a manufacturing method thereof.

[0011]

The invention according to claim 1 of the present invention comprises a transparent conductive first electrode on a transparent substrate, a front substrate having a photosensitive conductive layer on the first electrode, and a substrate. With a back substrate having a second electrode which is a matrix electrode on a material, a photopolymer is formed by a lithography method at a position corresponding to the matrix electrode, and a display microcapsule is housed at a predetermined position corresponding to the matrix electrode. The multi-color display panel is characterized in that a cell layer having a cell frame is sandwiched and laminated so that the first electrode of the front substrate and the second electrode of the back substrate face each other.

The invention according to claim 2 is characterized in that the display microcapsules have two or more kinds of electrophoretic particles of different colors dispersed and enclosed in a transparent dispersion medium. Is a multi-color display panel.

Further, the invention according to claim 3 is characterized in that, among the two or more kinds of electrophoretic particles having different colors, one kind is a particle exhibiting additive three primary colors and the other is a particle exhibiting black color. The multicolor display panel according to claim 2.

The invention according to claim 4 is characterized in that, among the two or more types of electrophoretic particles having different colors, one type is a particle exhibiting three subtractive primary colors, and the other is a particle exhibiting white color. Item 2. The multicolor display panel according to item 2.

According to a fifth aspect of the present invention, in the display microcapsule, rotating particles in which one surface of a hemisphere is colored with three additive primary colors and the other surface is colored in black are placed in a transparent dispersion medium. The multicolor display panel according to claim 1, which is dispersed and enclosed.

According to a sixth aspect of the present invention, in the display microcapsule, rotating particles in which one surface of a hemisphere is colored with three subtractive primary colors and the other surface is colored in white are dispersed in a transparent dispersion medium. The multi-color display panel according to claim 1, wherein the multi-color display panel is encapsulated.

The invention according to claim 7 is characterized in that the cell frame has a white color.
It is a multicolor display panel according to item.

Further, the invention according to claim 8 is characterized in that the cell frame has a black color.
It is a multicolor display panel according to item.

The invention according to claim 9 includes: (a) a step of providing a transparent conductive first electrode on the transparent base material of the front substrate, and providing a photosensitive conductive layer on the first electrode; b) applying a photopolymer onto the photosensitive conductive layer;
(C) a step of forming a cell frame having a shape in which a predetermined number of display microcapsules are housed in the photopolymer layer by using a lithographic method, and (d) a front substrate containing at least a pigment or dye of a first color and a dispersion medium. Immersion in an electrodeposition solution containing the display microcapsules, applying a voltage through the first electrode, and irradiating only the portion of the cell to be electrodeposited through the mask plate to set the display microcapsules to a predetermined size. And (e) for the second color and the third color in the same manner as in (e), and repeat (d) and (e) until all the required colors of at least two colors are present. The step and (f) the rear substrate having the second electrode, which is the matrix electrode, are stacked so that the cell on which the display microcapsules are electrodeposited and the matrix electrode correspond to each other so as to sandwich the cell. Layering and integrating,
Is a method of manufacturing a multicolor display panel.

The invention according to claim 10 is the method for manufacturing a display panel according to claim 9, wherein the photopolymer contains a white dye and a pigment. .

The invention according to claim 11 is the method for manufacturing a display panel according to claim 9, wherein the photopolymer contains a black dye and a pigment. .

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

In the present embodiment, the present invention will be described by exemplifying a display panel capable of color display by reproducing colors with three additive primary colors (R, G, B) and a manufacturing method thereof.

First, the multicolor display panel according to the present invention will be described. FIG. 1 is a cross-sectional view showing a structure of a multicolor display panel with three additive primary colors of red (R), green (G), and blue (B).

The display panel shown in FIG. 1 has a transparent substrate (1
a) a transparent conductive first electrode (1b) made of indium oxide-tin oxide (ITO), tin-antimony, indium-tin oxide, tin oxide, or the like, and the first electrode (1b) is irradiated with light. Then, the surface substrate (1c) on which the photosensitive conductive layer (1c) of a photoconductive compound such as cadmium sulfide, germanium, zinc oxide, amorphous selenium, amorphous silico, titanyl phthalocyanine, or polyvinylcarbazole, which exhibits conductivity, is formed ( 1) and a back substrate (3) having a second electrode (3b) which is a matrix electrode formed on a base material (3a)
Are arranged opposite to each other, and red (R), green (G), and blue (B) colored electrophoretic particles 11, 12, and 13 and black electrophoretic particles (1
4) and microcapsules for R color display (1)
10), G color display microcapsules (120) and B color display microcapsules (130) are held in a polymer resin cell (2) layer and are arranged in patterns at desired positions. The first electrode and the second electrode are referred to as electric field applying means.

The second electrode (3b) formed on the back substrate (3) includes a matrix electrode corresponding to the display microcapsules pattern-arranged at a desired position, and a matrix electrode (not shown). A switching element for displaying an image is provided between the two.

The first electrode (1b) formed on the front substrate (1) is provided so as to cover the entire surface with the same potential.

As shown in FIG. 1, this multicolor display panel is a display microcapsule whose optical reflection characteristics change to red (R), green (G), blue (B) and black respectively by the application of an electric field. Patterns 110, 120, and 130 are arranged adjacent to each other so as to be repeatedly arranged in order, and by controlling the electric field applied to each pattern, color display by additive color mixing becomes possible.

The principle of multicolor display by the display microcapsules enclosing the electrophoretic particles is shown in FIG. That is, this display microcapsule (200) is shown in FIG.
As shown in (a), acrylic resin such as polymethylmethacrylate or polyethylmethacrylate, urea resin, gum arabic or the like is used as a capsule shell (202), and colored particles (201) made of an R color pigment are provided inside. Black particles (204) made of carbon black are dispersed and enclosed in a highly viscous dispersion medium (203) such as silicone oil. In this case, the colored particles are made to have a positive charge, and the black particles are made to have a negative charge.

This display microcapsule (200)
The first electrode of the front substrate (1) is the negative electrode, and the rear substrate (3) is
When an electric field is applied so that the second electrode of
As in (b), the colored particles (201) are electrophoresed on the front substrate (1) side, and the black particles (204) are electrophoresed on the rear substrate (3) side. Therefore, the viewer will observe the R color of the colored particles. On the contrary, when an electric field is applied so that the first electrode of the front substrate (1) becomes the positive electrode and the second electrode of the rear substrate (3) becomes the negative electrode, the black particles (204) become front surface as shown in FIG. 2 (c). The colored particles (201) are electrophoresed on the substrate (1) side and on the rear substrate (3) side. Therefore, the viewer will observe the black of the black particles. Therefore, an image can be displayed by applying an electric field to each pixel based on the image data.

In the case of the display microcapsule (300) in which one surface of the hemisphere is colored with red (R), green (G), and blue (B), and the other hemisphere is black, the rotating microcapsules (300) are enclosed. When an electric field is applied to each pixel, the rotating particles rotate and an image can be displayed.

For example, as shown in FIG.
The surface (301) is R-colored, one surface (302) of the other hemisphere is black, and the R-color side of the rotating particles is polarized so that it becomes a positive electrode and the black side becomes a negative electrode, and the first electrode of the front substrate (1) When an electric field is applied such that the negative electrode is the negative electrode and the second electrode of the rear substrate (3) is the positive electrode, the R color of the rotating particles is the front substrate (1) side and the black color is the rear substrate (3) as shown in FIG. 3B. ) Orientation. Therefore, the viewer will observe the R color. vice versa,
When an electric field is applied such that the first electrode of the front substrate (1) becomes the positive electrode and the second electrode of the rear substrate (3) becomes the negative electrode, the black of the rotating particles is the front substrate (1) side and the R color is the rear substrate ( 3) Orient to face the side. Therefore, the viewer will observe black. Therefore, an image can be displayed by applying an electric field to each pixel based on the image data.

Further, in the inventions described in claims 3 to 6, in the case of color display with the additive three primary colors, when three colors overlap, it becomes white, and black is difficult to display. In the case of color display with the three primary colors of subtractive color, it becomes black when the three colors overlap, and it is difficult to display white, so it is preferable to set the other colors to white.

The invention described in claim 8 is to improve the black tightness by making the cell frame black so that the cell frame has a function of a black matrix like a liquid crystal display. Further, the invention according to claim 7 is intended to improve the sharpness of the white color when the white color is displayed in a dull state.

Next, a method of manufacturing such a multicolor display panel will be described. A multicolor display panel using a display microcapsule that uses a transparent dispersion medium and colored particles of red (R), green (G), and blue (B) and black particles will be described as an example.

As the transparent dispersion medium used for the display microcapsules, for example, silicone oil, aliphatic hydrocarbons, aromatic hydrocarbons, alicyclic hydrocarbons or the like can be used alone or in an appropriately mixed solvent.

As the colored particles, known organic pigments such as azo pigments and phthalocyanine pigments, various inorganic pigments, fine powders of metal powder, glass or resin, and composites of these are used. .

As the black particles, in addition to an inorganic pigment such as carbon black, fine powder of glass or resin, or a composite of these is used.

If necessary, various surface active agents, dispersants, etc. may be added to the surface of the particles to improve the dispersion stability in the dispersion liquid.

When an electric field is applied to the dispersion system in which the colored particles and the black particles are dispersed in these transparent dispersion media to change the display color, the colored particles and the black particles have opposite polarities. Even if they are charged to the same electric charge or if they are charged to the same electric charge, by providing a sufficient difference in the amount of charge, it is possible to display the same color as a dispersion system in which black particles are dispersed in a colored dispersion medium. .

These three kinds of dispersion liquids in which the R color particles and black particles, the G color particles and black particles, and the B color particles and black particles are dispersed in a transparent dispersion medium are each a phase of a complex coacervation method or the like. The display microcapsules are prepared by using a known method such as a separation method, an interfacial polymerization method, an in-situ method, a solution dispersion cooling method, or the like. These display microcapsules are subjected to sieving, specific gravity separation, or any other suitable method to control the diameter distribution of the prepared display microcapsules.

Each of these three types of display microcapsules is dispersed in a predetermined electrolytic solution to form an electrodeposition solution.

Next, a method for forming the transparent conductive first electrode (1b), the photosensitive conductive layer (1c) and the cell (2) on the base material (1a) of the front substrate (1) will be described. The base material (1a) of the front substrate made of a transparent member is a glass base material, polyethylene terephthalate or polycarbonate,
A plastic film substrate such as polyether sulfone can be preferably used.

The transparent first electrode (1b) formed on the base material (1a) of the front substrate (1) is made of the above-mentioned ITO (Indium).
A transparent material such as Tin Oxide) is used. If necessary, a water vapor prevention layer, an antiglare layer, and a hard coat layer may be provided on either side of the substrate.

On the first electrode (1b), a photosensitive conductive layer (1
c) is provided. This photosensitive conductive layer (1c) becomes conductive when exposed to light, and includes inorganic substances such as cadmium sulfide, lead sulfide and selenium, phthalocyanine,
Organic substances such as perylene and azo are used.

A cell (2) layer is formed on the photosensitive conductive layer (1c). The cell (2) layer is formed by using a lithography method as shown in FIG. A negative type photoresist (4) material is applied onto the photosensitive conductive layer (1c), and a mask plate (5) having a cell pattern formed thereon is brought into close contact with it and exposed. Then, the areas that are not photo-cured are removed by development, and the photo-cured portions are removed by the cell frame (4
a) is formed. (See FIGS. 4 (a) to 4 (c))

The negative photoresist is made of a resin component such as an acrylic resin having an acidic functional group such as a carboxyl group,
A photosensitive monomer, a photopolymerization initiator, or the like is preferably blended and patterned by utilizing photopolymerization or a photocrosslinking reaction. Examples of the photosensitive monomer include acrylic acid such as N-vinylpyrrolidone, ethyl acrylate and propyl acrylate. Examples thereof include esters, methacrylic acid esters such as ethyl methacrylate and propyl methacrylate, tetrahydrofurfuryl methacrylate, and derivatives thereof such as caprolactone modified products thereof, styrene, α-methylstyrene, acrylic acid and the like, and mixtures thereof.

The amount used is preferably 1 to 100 parts by weight, more preferably 5 parts by weight, based on 100 parts by weight of the resin component.
~ 80 parts.

Examples of the photopolymerization initiator include benzoin and its alkyl ethers such as benzoin, benzoin methyl ether and benzoin ethyl ether; acetophenones such as acetophenone and 2,2-dimethoxy-2-phenylacetophenone; methylanthraquinone, Anthraquinones such as 2-ethylanthraquinone; Thioxanthones such as thioxanthone and 2,4-diethylthioxanthone; Ketals such as acetophenone dimethyl ketal and benzyl dimethyl ketal; Benzophenones such as benzophenone and 4,4-bismethylaminobenzophenone and azo A compound, a triazine compound, an acylphosphine oxide compound and the like can be preferably used alone or as a mixture of two or more kinds. The amount used is preferably 0.5 to 50 parts by weight, more preferably 1 to 100 parts by weight of the photosensitive monomer.
~ 30 parts by weight.

If necessary, a solvent component can be suitably added. The solvent may be arbitrarily used depending on the compatibility with the resin component and the like, and the compounding amount is 5 to 400 parts by weight, and more preferably 10 to 200 parts by weight with respect to 100 parts by weight of the resin component. is there.

On the transparent substrate (1a), the first electrode (1
b), the photosensitive conductive layer (1c) and the cell (2) layer are formed, and the front substrate (1) is subjected to an electrodeposition process using an electrodeposition liquid in which the display microcapsules are dispersed to obtain the display microcapsules. Add one color at a time.

Here, as the electrodeposition liquid, a display microcapsule dispersed in ultrapure water of 18 MΩ · cm is used, and the display microcapsule is charged positively in pure water.

FIG. 5 is a schematic view of an apparatus for electrodepositing the display microcapsules in the cells of the front substrate, and FIG.
The figure explaining the electrodeposition method is shown, respectively.

First, in order to electrodeposit the R color microcapsules of the first color on a predetermined cell, the first substrate of the front substrate (1) was used.
Voltage is applied to the electrodes via the connector. Then, first, the front substrate (1) is immersed in the electrodeposition liquid (8) in which the first color R display microcapsules are dispersed. The counter electrode (7) is also already installed in the electrodeposition liquid (8). A carbon electrode was used for the counter electrode (7). Besides, stainless steel,
An insoluble electrode such as titanium can be used.

The electrolytic cell (10) is, as shown in FIG.
Light is radiated from the outside of the tank, and light passing through the mask plate (6, 6r) having a pattern in which light is transmitted only to the R display cell illuminates a predetermined portion of the cell (2) through the front substrate (1). It is structured. The photosensitive layer of the cell exposed to light receives light and has electrical conductivity. On the contrary, no current flows in the photosensitive layer where light is not applied.

Here, a voltage is applied between the front substrate (1) and the counter electrode (7). By setting the front substrate (1) to a negative potential, positively charged R display microcapsules (110)
Is moved and electrodeposited on the irradiated part X. DC or pulse can be selected as the voltage application method. (Fig. 6 (a),
(See (b)).

After a sufficient energization time, the front substrate (1) is taken out of the electrolytic cell (10) and washed with pure water.

Next, a microcapsule for displaying R color (11
The same operation as the electrodeposition of 0) is performed on the G color display microcapsules (120) and the B color display microcapsules (130). The red (R), green (G), and blue (B) mask plates are adjusted by an alignment device. FIG. 6C shows that the G-color display microcapsules (120) are electrodeposited using the G-color electrodeposition mask plate (6 g). There is no regulation on the order of electrodeposition. Other colors can also be used by the same operation.

Then, the back substrate (3) having the second electrode (3b) formed thereon is laminated on these display microcapsule pattern layers, whereby the display panel having the structure shown in FIG. 1 can be manufactured.

As described above, by patterning a plurality of display microcapsules having different optical reflection characteristics which change with the application of an electric field by the electrodeposition method, each display microcapsule can be accurately positioned at a desired position. As a result, it can be accurately arranged at a desired position where the electric field applying means is formed on the substrate.

As shown in the present embodiment, three kinds of display microcapsules in which each dispersion medium is colored in three primary colors and the electrophoretic particles are black, and the dispersion medium is transparent and electrophoresis is performed. Three types of display microcapsules, each of which is composed of colored particles of three primary colors and black particles, can be accurately arranged so as to be repeatedly arranged in order as a display unit for each pixel, and color display is possible for each pixel. A high-definition and high-quality display panel can be manufactured.

The display panel manufacturing method of the present invention is
The present invention is not limited to this embodiment, but various suitable modifications can be made. For example, in the embodiment of the present invention, a method of manufacturing a display panel capable of color display has been illustrated, but for example, two types of display microcapsules whose optical reflection characteristics change between black and white and red and white. By using the electrodeposition method and patterning and arranging at the desired positions, the display colors are only black, red, and white, but a higher definition display than when three types of display microcapsules are used. The panel can be manufactured.

Further, in the present embodiment, three primary colors of additive color mixing by three types of display microcapsules whose optical reflection characteristics change to red (R), green (G), blue (B) and black, respectively. Although the case where the above is used is illustrated, a display microcapsule having optical reflection characteristics of yellow (Y), magenta (M), and cyan (C), which are three primary colors of subtractive color mixture, can be used. Also, other arbitrary color combinations may be used. When the display microcapsules having the optical reflection characteristics of red (R), green (G), and blue (B) of the three additive colors are used, black is preferable for the optical reflection characteristics of each other, but any Color can also be used.

Furthermore, the number of display microcapsules held in each pattern is not particularly limited as long as it is one or more, and a plurality of display microcapsules having a small diameter can be used.

[0065]

As described above, by using the display panel and the method of manufacturing the same according to the present invention, two or more kinds of display microcapsules having different optical reflection characteristics which are changed by application of an electric field are patterned by the electrodeposition method. By doing so, it is possible to provide a display panel that can be surely installed at a desired position, and is capable of high-definition and high-quality display of a plurality of colors and colors, and a manufacturing method thereof.

[Brief description of drawings]

FIG. 1 is a cross-sectional configuration diagram of a display panel according to an embodiment of the present invention.

2A and 2B are diagrams illustrating a display method using electrophoretic particles, in which FIG. 2A shows display microcapsules, and FIGS. 2B and 2C show states when an electric field is applied.

3A and 3B are diagrams illustrating a display method using rotating particles, in which FIG. 3A shows microcapsules for display, and FIG. 3B shows a state when an electric field is applied.

FIG. 4 is a view for explaining a step of forming a cell layer on a substrate, (a) applying a photopolymer to the substrate, (b) exposing through a mask plate, (c) developing to form a cell layer. It is sectional drawing which respectively shows the state which was done.

FIG. 5 is a schematic external view of a device for electrodeposition of display microcapsules.

FIG. 6 is a diagram for explaining a step of electrodepositing the display microcapsules on the cell layer, in which (a) moves the R display microcapsules through the R color electrodeposition mask plate while applying an electric field, (B) is R
FIG. 3C is a cross-sectional view showing a state in which the color display microcapsules are electrodeposited in a predetermined cell, and FIG. 7C is a state in which the B color display microcapsules are electrodeposited in a predetermined cell.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Front substrate 1a ... Transparent base material 1b ... 1st electrode 1c
... Photosensitive conductive layer 2 ... Cell 2a ... Cell frame 3 ... Back substrate 3a ... Base material 3b ... Second electrode 4 ... Photopolymer 4a ... Photocured part (cell frame) 5 ... Cell-forming mask plate 6 ... Electrodeposition mask Version 6r ... R Colored Wearing Mask Version 6g
... G color electrodeposited mask plate 7 ... Counter electrode 8 ... Electrodeposition liquid 10 ... Electrolytic bath 11 ... R color particles 12 ... G color particles 13 ... B color particles 14 ... Black particles 100 ... Multicolor display panel 110 ... R color display Microcapsules 120 ... Microcapsules for G color display 130 ... Microcapsules for B color display 200 ... Microcapsules 201 containing electrophoretic particles ... Colored particles 202 ... Capsule shell 203 ... Dispersion medium 204 ... Black particles 300 ... Rotating particles A microcapsule 301 in which is encapsulated ... A colored hemisphere 302 ... A black hemisphere

Claims (11)

[Claims] 1. A front substrate having a transparent conductive first electrode on a transparent substrate and a photosensitive conductive layer on the first electrode, and a back substrate having a second electrode which is a matrix electrode on the substrate. The photopolymer is formed at a position corresponding to the matrix electrode by a lithographic method, and a cell layer having a cell frame for accommodating display microcapsules at a predetermined position corresponding to the matrix electrode is formed on the first electrode of the front substrate. And a panel for multicolor display, wherein the back substrate is sandwiched and laminated such that the second electrodes face each other. 2. The multicolor display panel according to claim 1, wherein the display microcapsules have two or more kinds of electrophoretic particles having different colors dispersed and enclosed in a transparent dispersion medium. 3. The electrophoretic particles of two or more different colors, wherein one kind is a particle exhibiting additive three primary colors and the other is a particle exhibiting black color. Color display panel. 4. The multicolor according to claim 2, wherein among the two or more kinds of electrophoretic particles having different colors, one kind is a particle exhibiting three subtractive primary colors and the other is a particle exhibiting white color. Display panel. 5. The display microcapsule is a hemispherical one.
2. The multicolor display panel according to claim 1, wherein rotating particles whose surface is colored with three primary colors of addition and the other one surface is colored with black are dispersed and enclosed in a transparent dispersion medium. 6. The display microcapsule is a hemispherical one.
The multicolor display panel according to claim 1, wherein rotating particles whose surface is colored with three primary colors of subtractive color and the other one is colored with white are dispersed and enclosed in a transparent dispersion medium. 7. The multicolor display panel according to claim 1, wherein the cell frame has a white color. 8. The multicolor display panel according to claim 1, wherein the cell frame has a black color. 9. A step of: (a) providing a transparent conductive first electrode on a transparent base material of a front substrate, and providing a photosensitive conductive layer on the first electrode; and (b) the photosensitive conductive layer. And (c) forming a cell frame having a shape for accommodating a predetermined number of display microcapsules on the photopolymer layer by using a lithographic method, and (d) forming a front substrate with 1 Immerse in an electrodeposition liquid containing display microcapsules containing at least a pigment or dye of a color and a dispersion medium, and
A step of applying a voltage through the electrodes and irradiating only a portion of the cell to be electrodeposited with light through a mask plate to electrodeposit the display microcapsules into a predetermined cell;
Similarly, for the third and third colors, the steps (d) and (e) are repeated, and at least two or more necessary colors are repeated until all the cells are in the same color, and (f) the second electrode which is the matrix electrode Manufacturing a multi-color display panel, which comprises a step of stacking and integrating the rear substrate having the cells, in which the cells on which the display microcapsules are electrodeposited and the matrix electrodes are associated with each other so as to sandwich the cells. Method. 10. The method for manufacturing a display panel according to claim 9, wherein the photopolymer contains a white dye and a pigment. 11. The method for producing a display panel according to claim 9, wherein the photopolymer contains a black dye and a pigment.