JP2010256560A - Method for manufacturing display panel for color display, and display panel for color display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a display panel for color display in a high productivity with a simple process, and the display panel for color display panel. <P>SOLUTION: A color filter film with a partition is manufactured by forming a color filter 12 on a surface of a base material 11 where the electrode for transparent pixels is not formed by using a colorless and transparent film, in which an electrode 6 for transparent pixels constituting one of a counter electrode pair is formed, and forming the partition 4 forming a cell for arranging a display medium later on a surface where the electrode is formed. A color filter substrate 15 manufactured by arranging transparent adhesives on the color filter of the color filter film with the partition and sticking the film to a transparent panel substrate is used as an observation side panel substrate. The display panel for color display with a structure that the color filter is arranged inside the transparent panel substrate constituting the observation side panel substrate is manufactured by sticking the color filter substrate 15 to a rear side panel substrate 1, on which the counter electrode is, formed after arranging the display medium in the cell. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  In the present invention, a display medium is sealed in a space between two opposing substrates at least one of which is transparent, and light incident from the observation side panel substrate is reflected on the observation side panel substrate as reflected light reflected by the display medium. The present invention relates to a method for manufacturing a color display display panel and a display panel for color display, in which information such as an image displayed in color on a display medium can be observed by recognizing through the provided color filter of each color.

  As an information display panel device that replaces the conventional transmissive liquid crystal display panel device (LCD), a charged particle gas movement method, a charged particle liquid electrophoresis method, an electrochromic method, a thermal method, a two-color particle rotation method, etc. There has been proposed an information display panel device capable of obtaining visibility such as viewing what is drawn on paper using a technique of visually recognizing with reflected light from a display medium. Compared to LCDs, these technologies have advantages such as a wide viewing angle that is close to that of ordinary printed materials, low power consumption, and a memory function. It is considered as a technique that can be used for a panel device, and is expected to be developed to a portable terminal information display panel device, an electronic paper type information display panel device, and the like. In particular, recently, charged particles are encapsulated in a microcapsule as a dispersed particle together with a dispersion, and this is arranged between opposing substrates. In the liquid-electrophoresis method, the display is configured as a group of particles containing charged particles. A charged particle gas moving system in which a medium is arranged in a gas space between opposing substrates has been proposed and is expected.

  Further, a charged particle gas movement method, a charged particle liquid electrophoresis method, an electrochromic method, which apply the same technology as a color display type liquid crystal display (for example, see Patent Document 1) in which a color filter is combined with a conventional liquid crystal display. There are also known color display type information display panel devices such as a thermal method and a two-color particle rotation method.

JP 2002-303716 A

  In the information display panel combined with the above-described conventional color filter, a color filter is formed on a transparent substrate and a transparent electrode is formed thereon, or a transparent electrode is formed on the transparent substrate, It was configured to form a color filter.

  That is, as shown in FIG. 17A, a transparent pixel electrode 52 constituting one of the counter electrode pairs is formed on the observation-side transparent panel substrate 51, and color filters 53R, 53G, and 53BL are formed thereon. As shown in FIG. 17 (b), the color filter 53R, 53G, 53BL is formed on the observation-side transparent panel substrate 51, and the transparent pixel electrode 52 constituting one of the counter electrode pairs is formed thereon. Or formed. Then, as shown in FIG. 18A, a partition wall 54 is formed on a transparent panel substrate 51 on which a color filter is formed, and a black display medium 55B and a white display medium 55W are arranged in a cell surrounded by the partition wall, and then face each other. A back side panel substrate 57 provided with a pixel electrode 56 constituting the other electrode pair is bonded, or as shown in FIG. 18B, a back side panel substrate 57 provided with a pixel electrode 56 is attached. After the partition 54 was formed and the black display medium 55B and the white display medium 55W were disposed in the cell surrounded by the partition, the transparent panel substrate 51 on which the color filter was formed was bonded to obtain a color type information display panel.

  For this reason, it is necessary to flatten the surface of the color filter formed first on the transparent substrate or the surface of the transparent electrode first formed on the transparent substrate, and then form the transparent electrode or color filter. As a result, there was a problem in terms of productivity.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a method for manufacturing a color display display panel and a color display display panel that can obtain a color display display panel with a simple process and high productivity. Is.

  The method for producing a display panel for color display according to the first aspect of the present invention comprises a colorless transparent film on which a transparent pixel electrode constituting one of a pair of opposed electrodes is formed as a base material. A color filter is formed on the surface on which the pixel electrode is not formed, and a partition for forming a cell for arranging a display medium later is formed on the surface on which the electrode is formed. A color filter substrate prepared by placing a transparent adhesive on the color filter of the color filter film with a partition wall and pasting it to a transparent panel substrate was used as an observation side panel substrate, and a display medium was placed in the cell. A viewing-side panel substrate is formed by pasting together with a back-side panel substrate on which a pixel electrode constituting the other of the counter electrode pair is formed. It is characterized in making a color display for display panel was placed a color filter on the inner side of the transparent panel substrate structure.

  According to a second aspect of the present invention, there is provided a method for producing a display panel for color display, wherein a transparent and transparent film on which a transparent pixel electrode constituting one of a pair of counter electrodes is formed is used as a base material. A partition for forming a cell for arranging a display medium later is formed on the surface on which the pixel electrode is formed, and a color filter is formed on the surface on which the electrode is not formed to form a color filter film with a partition. A color filter substrate prepared by placing a transparent adhesive on the color filter of the color filter film with a partition wall and pasting it to a transparent panel substrate was used as an observation side panel substrate, and a display medium was placed in the cell. Configure the observation-side panel substrate by pasting together the back-side panel substrate on which the pixel electrode that forms the other of the counter electrode pair is formed Is characterized in making a structural color display for a display panel arranged a color filter on the inner side of the transparent panel substrate that.

  According to a third aspect of the present invention, there is provided a method for producing a display panel for color display, wherein a transparent and transparent film on which a transparent pixel electrode constituting one of the pair of counter electrodes is formed is used as a base material. A partition wall for forming a cell for arranging a display medium later is formed on the surface on which the pixel electrode is not formed, and a color filter is formed on the surface on which the electrode is not formed to form a color with a partition wall. A color filter substrate prepared by preparing a filter film, placing a transparent adhesive on the transparent pixel electrode of the color filter film with a partition wall and pasting it to the transparent panel substrate is used as an observation side panel substrate, After the display medium is arranged, the observation side panel substrate is bonded to the back side panel substrate on which the pixel electrode constituting the other of the counter electrode pair is formed. It is characterized in making a color display for display panel structure in which a color filter on the inner side of the transparent panel substrate which constitutes the.

  According to a fourth aspect of the present invention, there is provided a method for producing a display panel for color display, wherein a transparent film having a transparent pixel electrode constituting one of the pair of counter electrodes is used as a base material. A color filter is formed on the surface on which the pixel electrode is not formed, and on the surface on which the color filter is formed, a partition for forming a cell for later placing a display medium is formed to form a color filter film with the partition. The color filter substrate prepared by placing a transparent adhesive on the transparent pixel electrode of the color filter film with a partition wall and pasting it to the transparent panel substrate is used as an observation side panel substrate, and a display medium is provided in the cell. After being placed, the observation side panel substrate is bonded to the back side panel substrate on which the pixel electrode constituting the other of the counter electrode pair is formed. It is characterized in making a color display for display panel structure in which a color filter on the inner side of the transparent panel substrate which constitutes the.

  As a preferred example of the method for producing a display panel for color display according to the first to fourth inventions of the present invention, as a color filter film with a partition wall, a rib-shaped black light-shielding material or a rib-shaped white light-shielding film is provided in the same layer as the color filter. Use a material in which a material is formed, and a rib-like black that is formed in the same layer as the color filter with a color filter film with a partition wall in which a rib-like black light-shielding material or a rib-like white light-shielding material is formed in the same layer as the color filter A base material made of a colorless transparent film forming a color filter and an electrode for a transparent pixel, which is obtained by forming a partition wall on at least a part of a light shielding material or a rib-like white light shielding material The thickness of the film is in the range of 9 μm to 200 μm, more preferably in the range of 9 μm to 100 μm, the color filter film and the transparent As an adhesive for bonding to the Nell substrate, it is a colorless and transparent material such as an acrylic adhesive, a methacrylic adhesive, an epoxy adhesive, a photocuring initiator, a thermosetting initiator, a photocuring initiator, and a thermosetting initiator. When using a colorless and transparent adhesive containing both of the above and the color filter film and transparent panel substrate, the adhesive contains both a photocuring initiator and a thermosetting initiator. Used, the color filter film and the transparent panel substrate are aligned and bonded (temporary bonding) by a curing reaction with a photocuring initiator, and then transparent with the color filter film by a curing reaction with a thermal curing initiator using a hot press or a heat roller. Adhesive bonding to the panel substrate, hot melt type and colorless as an adhesive that bonds the color filter film and transparent panel substrate Use a transparent adhesive, use a hot melt adhesive to align the color filter film and transparent panel substrate, align the color filter film and transparent panel substrate, and then use a hot press or heat roller After the adhesive is melted and cured, the color filter film and the transparent panel substrate are bonded to each other, and the color filter is formed by sequentially forming each color filter by one of the photolithographic method, flexographic printing method, and inkjet printing method. There is something to do.

  The color display panel according to the present invention is manufactured by the above-described method for manufacturing a color display panel.

  According to the first and second inventions of the present invention, a color filter is formed on the surface on which the electrode is not formed, using the colorless transparent film on which the transparent pixel electrode is formed as a base, and the electrode is formed. A laminated color structure in which a partition-attached color filter film produced by forming a partition for forming a cell for arranging a display medium on the surface is bonded to a transparent panel substrate as an observation side panel substrate. Since the filter substrate is used, the color filter substrate can be obtained without using the flattening step of the color filter surface or the transparent electrode surface, and the productivity of the color filter substrate is improved.

  According to the third and fourth inventions of the present invention, the color filter is formed on the surface on which the electrode is not formed, using the colorless transparent film on which the transparent pixel electrode is formed as a base material. A laminated color with a structure in which a partition-attached color filter film formed by forming a partition for forming a cell for arranging a display medium on the formed surface is bonded to a transparent panel substrate as an observation side panel substrate. Since the filter substrate is used, the color filter substrate can be obtained without using the flattening step of the color filter surface or the transparent electrode surface, and the productivity of the color filter substrate is improved.

  According to a preferred embodiment of the present invention, the position of the pixel is passed through the transparent film substrate on the surface of the transparent film substrate on which the transparent pixel electrode is formed, on the side opposite to the surface on which the electrode is formed. Since the color filter was formed while checking, the alignment of the pixel electrode and the color filter was facilitated, and the productivity of the color filter substrate was improved. In addition, since the color filter, rib-shaped light-shielding material, and cell-forming partition, which are important for accurate alignment with the pixels, are formed on the same transparent film substrate on which the electrodes to be pixels are formed in advance, the accuracy is high. It became easy to align. Furthermore, since the thickness of the film substrate of the color filter film is 9 μm to 200 μm, preferably 9 μm to 100 μm, even if the film substrate is arranged between the color filter and the display medium, When the color filter and the display medium are in contact with each other without a large distance between the filter and the display medium, the color filter and the display medium are close to each other. Through color filters, it is now possible to display colors without color mixing without causing a visual field shift that causes the reflected light from the display medium in the adjacent pixels to be seen.

(A), (b) is a figure for demonstrating an example of a structure of the display panel used as the object of the manufacturing method of this invention, respectively. (A), (b) is a figure for demonstrating the other example of a structure of the display panel used as the object of the manufacturing method of this invention, respectively. (A)-(e) is a figure which shows an example of the manufacturing method of the display panel for color displays which concerns on 1st invention of this invention, respectively. (A)-(e) is a figure which shows the other example of the manufacturing method of the display panel for color displays which concerns on 1st invention of this invention, respectively. (A)-(e) is a figure which shows an example of the manufacturing method of the display panel for color displays which concerns on 2nd invention of this invention, respectively. (A)-(e) is a figure which shows the other example of the manufacturing method of the display panel for color displays which concerns on 2nd invention of this invention, respectively. (A)-(e) is a figure which shows an example of the manufacturing method of the display panel for color displays which concerns on 3rd invention of this invention, respectively. (A)-(e) is a figure which shows the other example of the manufacturing method of the display panel for color displays which concerns on 3rd invention of this invention, respectively. (A)-(e) is a figure which shows an example of the manufacturing method of the display panel for color displays which concerns on 4th invention of this invention, respectively. (A)-(e) is a figure which shows the other example of the manufacturing method of the display panel for color displays which concerns on 4th invention of this invention, respectively. (A)-(c) is a figure for demonstrating an example of the panel structure of the display panel for color displays produced with the manufacturing method of the display panel for color displays of this invention, respectively. (A)-(c) is a figure for demonstrating the other example of the panel structure of the display panel for color displays produced with the manufacturing method of the display panel for color displays of this invention, respectively. (A), (b) is a figure for demonstrating the further another example of the panel structure of the display panel for color displays produced with the manufacturing method of the display panel for color displays of this invention, respectively. (A), (b) is a figure for demonstrating the further another example of the panel structure of the display panel for color displays produced with the manufacturing method of the display panel for color displays of this invention, respectively. (A), (b) is a figure for demonstrating the further another example of the panel structure of the display panel for color displays produced with the manufacturing method of the display panel for color displays of this invention, respectively. (A), (b) is a figure for demonstrating the further another example of the panel structure of the display panel for color displays produced with the manufacturing method of the display panel for color displays of this invention, respectively. (A), (b) is a figure for demonstrating an example of the manufacturing method of the conventional display panel for color displays, respectively. (A), (b) is a figure for demonstrating the other example of the manufacturing method of the conventional display panel for color displays, respectively.

  First, as an example of the configuration of a display panel that is an object of the present invention, a display panel using a particle group including a chargeable particle as a display medium will be described. In the display panel, an electric field is applied to a display medium configured as a particle group including charged particles enclosed between two opposing substrates. Along with the applied electric field direction, the display medium is attracted by an electric field force or a Coulomb force, and the display medium is moved by a change in the electric field direction, whereby information such as an image is displayed. Therefore, it is necessary to design the display panel so that the display medium can move uniformly and maintain the stability when the display information is rewritten or when the display information is continuously displayed. Here, as the force applied to the particles constituting the display medium, in addition to the force attracting each other by the Coulomb force between the particles, an electric mirror image force between the electrode and the substrate, an intermolecular force, a liquid cross-linking force, gravity and the like can be considered.

  An example of a display panel using a particle group containing the above-described chargeable particles as a target of the present invention as a display medium will be described with reference to FIGS. . The examples shown in FIGS. 1A and 1B to FIGS. 2A and 2B are for explaining the basic configuration and operation of the display panel that is the subject of the present invention. Actually, the present invention is slightly different from the configuration of the display panel in which the particle group constituting the display medium is filled and arranged in the cell in the present invention in terms of the configuration of the partition walls.

  In the example shown in FIGS. 1 (a) and 1 (b), at least two types of display media having different optical reflectivity and charging characteristics (here, configured as a particle group including particles having at least optical reflectivity and chargeability) The white display medium 3W configured as a particle group including the negatively charged white particles 3Wa and the black display medium 3B configured as a particle group including the positively charged black particles 3Ba are shown). In the cell, the substrates 1 and 2 correspond to the electric field generated by applying a voltage to the pixel electrode pair formed by the stripe electrode 6 provided on the substrate 2 and the stripe electrode 5 provided on the substrate 1 crossing each other at right angles. The configuration is a passive drive system that moves vertically. Then, the white display medium 3W is visually recognized by the observer as shown in FIG. 1A, or the black display medium 3B is visually recognized by the observer as shown in FIG. 1B. Are displayed in a matrix with black and white dots. In addition, in FIG. 1 (a), (b), the partition in front is abbreviate | omitted. Here, an example is shown in which a pixel and a cell are associated with each other on a one-to-one basis, but a pixel and a cell may not be associated with each other on a one-to-one basis.

  In the example shown in FIGS. 2A and 2B, at least two types of display media having different optical reflectance and charging characteristics (here, configured as a particle group including particles having at least optical reflectance and charging properties (here) The white display medium 3W configured as a particle group including the negatively charged white particles 3Wa and the black display medium 3B configured as a particle group including the positively charged black particles 3Ba are shown). In the cell, in response to an electric field generated by applying a voltage to a pixel electrode pair formed by facing an electrode 5 (pixel electrode with TFT) provided on the substrate 1 and an electrode 6 (common electrode) provided on the substrate 2. Therefore, the active drive system is configured to move perpendicularly to the substrates 1 and 2. Then, the white display medium 3W is visually recognized by the observer as shown in FIG. 2A, or the white display is displayed by the observer, or the black display medium 3B is visually recognized by the observer as shown in FIG. 2B. Are displayed in a matrix with black and white dots. In addition, in FIG. 2 (a), (b), the partition in front is abbreviate | omitted. Here, an example is shown in which a pixel and a cell are associated with each other on a one-to-one basis, but a pixel and a cell may not be associated with each other on a one-to-one basis.

  A feature of the method for producing a display panel for color display according to the present invention is that a color filter with a partition wall is provided in advance in producing a display panel that performs color display by providing a color filter on the observation-side transparent substrate of the display panel having the above-described configuration. A film is produced according to the production method of any one of the first to fourth inventions of the present invention, and the color filter substrate produced by laminating the color filter film with a partition and a transparent substrate is used as an observation side panel substrate. is there. Further, a rib-like black light shielding material or a rib-like white light shielding material is formed in the same layer as the color filter.

  Specifically, the color filter forming surface of the color filter film is bonded so as to be in contact with the transparent substrate, and transparent pixel electrode / color filter film substrate / color filter (or color filter and light shielding material) / adhesive layer / Laminated structure in the order of transparent substrate (first invention and second invention), or color filter (or color filter and light shielding material) / color filter film substrate / transparent pixel electrode / adhesive layer / transparent substrate The color filter substrate having the laminated structure (third invention and fourth invention) in order was used as the observation side panel substrate.

  The color filter layer is composed of three primary color filters or three primary and colorless and transparent color filters. The color filter layer may be composed of three primary color filters or three primary colors and a colorless and transparent color filter, and a rib-like black light shielding material or a rib-like white light shielding material may be provided in the same layer as the color filter.

  Further, the color filter film sequentially forms each color filter on the other surface of the film base material on which the transparent pixel electrodes are patterned in accordance with the patterned pixel electrodes. The color filter is formed using a printing method such as flexographic printing or inkjet printing in addition to the photolithography method. Each color filter is sequentially formed while confirming the position of the transparent pixel electrode through the transparent film substrate.

  Furthermore, when a rib-shaped black light shielding material or a rib-shaped white light shielding material is provided in the same layer as the color filter layer, the rib-shaped black light shielding material or the rib-shaped white light shielding material is formed in a lattice shape, Each color filter is sequentially formed in the enclosed area. The rib-like black light shielding material or the rib-like white light shielding material can be formed by a photolithography method using a dry resist film having a predetermined thickness containing each color pigment. The height of the rib-shaped black light-shielding material or the rib-shaped white light-shielding material is preferably aligned with the height of the color filter, but may be larger or smaller than the height of the color filter.

  Further, the thickness of the film base of the color filter film is preferably 9 μm to 200 μm, and more preferably 9 μm to 100 μm. If it is thinner than 9 μm, it may be difficult to handle, and if it is thicker than 200 μm, the distance between the color filter and the display medium increases when the film electrode side is arranged inside the display panel. There is an inconvenience that color mixing tends to occur in a color display image due to a visual field shift due to an observation angle with respect to reflected light from a medium.

  Hereinafter, a method for manufacturing a color display panel according to the first to fourth inventions of the present invention will be described with reference to FIGS. 3 (a) to 3 (e) to 10 (a) to (e).

  FIGS. 3A to 3E are views showing an example of a method for manufacturing a display panel for color display according to the first invention of the present invention. In the example of the first invention shown in FIGS. 3A to 3C, first, as shown in FIG. 3A, the transparent pixel electrode 6 (stripe electrode) constituting one of the counter electrode pairs is formed. A colorless and transparent film is prepared as the film base 11. Next, as shown in FIG. 3B, color filters 12R, 12G, and 12BL are formed on the surface of the film base 11 on which the transparent pixel electrode 6 is not formed. The color filter can be produced by any of printing methods such as inkjet printing and flexographic printing, and photolithographic methods. However, ink-jet printing and photolithographic methods are preferred for producing dot-shaped color filters. Flexographic printing and photolithography are preferred. Next, as shown in FIG. 3C, a partition wall 4 for forming a cell for arranging a display medium later is formed on the surface on which the electrode 6 is formed to produce a partition-attached color filter film 13. . Next, as shown in FIG. 3D, a color produced by disposing a transparent adhesive 14 on the color filters 12R, 12G, and 12BL of the color filter film 13 with a partition wall and bonding the transparent adhesive to the transparent panel substrate 2. A filter substrate 15 is prepared, and a back side panel substrate 1 on which a pixel electrode 5 (stripe electrode) constituting the other of the counter electrode pair is formed. Next, as shown in FIG. 3E, after the display media 3W and 3B are arranged in the cells of the color filter substrate 15, the color filter substrate 15 is bonded to the back side panel substrate 1, and the observation side panel substrate is bonded. A color display panel having a structure in which the color filters 12R, 12G, and 12BL are arranged inside the transparent panel substrate 2 that constitutes the above is manufactured.

  FIGS. 4A to 4E are views showing another example of a method for manufacturing a display panel for color display according to the first invention of the present invention. In the example of the first invention shown in FIGS. 4A to 4C, first, as shown in FIG. 4A, the transparent pixel electrode 6 (common electrode) constituting one of the counter electrode pairs is formed. A colorless and transparent film is prepared as the film base 11. Next, as shown in FIG. 4B, color filters 12R, 12G, 12BL and a black light shielding material 17 are formed on the surface of the film base 11 on which the transparent pixel electrode 6 is not formed. The color filter and the rib-shaped light-shielding material may be produced by preparing the color filter after producing the rib-shaped light-shielding material, or may produce the rib-shaped light-shielding material after producing the color filter. You may produce a color filter simultaneously. When the color filter is formed by ink jet printing, it is preferable that the rib-shaped light-shielding material is prepared in advance so that the rib-shaped light-shielding material becomes a bank that suppresses the flow and spread of the color filter ink. In the flexographic printing method, the rib-shaped light shielding material and the color filter can be flexographically printed at the same time using the rib-shaped light shielding material flexo ink and the color filter flexo ink. Next, as shown in FIG. 4C, a partition wall 4 for forming a cell for arranging a display medium later is formed on the surface on which the electrode 6 is formed to produce a color filter film 13 with a partition wall. . Next, as shown in FIG. 4 (d), a transparent adhesive 14 is placed on the color filters 12R, 12G, 12BL and the black light shielding material 17 of the color filter film 13 with a partition wall and attached to the transparent panel substrate 2. A color filter substrate 15 produced together is prepared, and a back-side panel substrate 1 on which a pixel electrode 5 (pixel electrode with TFT) constituting the other of the counter electrode pair is prepared. Next, as shown in FIG. 4E, after the display media 3W and 3B are arranged in the cells of the color filter substrate 15, the color filter substrate 15 is bonded to the back side panel substrate 1, and the observation side panel substrate is bonded. A color display panel having a structure in which the color filters 12R, 12G, 12BL and the black light-shielding material 17 are arranged inside the transparent panel substrate 2 constituting the above is manufactured.

  FIGS. 5A to 5E are views showing an example of a method for manufacturing a display panel for color display according to the second invention of the present invention. In the example of the second invention shown in FIGS. 5A to 5E, first, as shown in FIG. 5A, the transparent pixel electrode 6 (striped electrode) constituting one of the counter electrode pairs is formed. A colorless and transparent film is prepared as the film base 11. Next, as shown in FIG. 5 (b), a partition wall 4 is formed on the surface of the film base 11 on which the transparent pixel electrode 6 is formed. . Next, as shown in FIG. 5C, color filters 12R, 12G, and 12BL are formed on the surface on which the electrode 6 is not formed to produce a color filter film 13 with a partition wall. The color filter can be produced by any of printing methods such as ink jet printing and flexographic printing, and photolithographic methods. However, ink jet printing and photolithographic methods are preferable for producing dot color filters. Flexographic printing and photolithography are preferred. Next, as shown in FIG. 5 (d), a color produced by disposing a transparent adhesive 14 on the color filters 12R, 12G, and 12BL of the color filter film 13 with a partition wall and bonding it to the transparent panel substrate 2. A filter substrate 15 is prepared, and a back side panel substrate 1 on which a pixel electrode 5 (stripe electrode) constituting the other of the counter electrode pair is formed. Next, as shown in FIG. 5E, after the display media 3W and 3B are arranged in the cells of the color filter substrate 15, the color filter substrate 15 is bonded to the back side panel substrate 1 and the observation side panel substrate. A color display panel having a structure in which the color filters 12R, 12G, and 12BL are arranged inside the transparent panel substrate 2 that constitutes the above is manufactured.

  FIGS. 6A to 6E are views showing another example of a method for manufacturing a display panel for color display according to the second invention of the present invention. In the example of the second invention shown in FIGS. 6A to 6E, first, as shown in FIG. 6A, the transparent pixel electrode 6 (stripe electrode) constituting one of the counter electrode pairs is formed. A colorless and transparent film is prepared as the film base 11. Next, as shown in FIG. 6 (b), a partition wall 4 is formed on the surface of the film substrate 11 on which the transparent pixel electrode 6 is formed to form a cell for arranging a display medium later. . Next, as shown in FIG. 6C, the color filters 12R, 12G, and 12BL and the white light shielding material 18 are formed on the surface on which the electrode 6 is not formed to produce a color filter film 13 with a partition wall. The color filter and the rib-shaped light-shielding material may be produced by preparing the color filter after producing the rib-shaped light-shielding material, or may produce the rib-shaped light-shielding material after producing the color filter. You may produce a color filter simultaneously. When the color filter is formed by ink jet printing, it is preferable that the rib-shaped light-shielding material is prepared in advance so that the rib-shaped light-shielding material becomes a bank that suppresses the flow and spread of the color filter ink. In the flexographic printing method, the rib-shaped light shielding material and the color filter can be flexographically printed at the same time using the rib-shaped light shielding material flexo ink and the color filter flexo ink. In the photolithographic method, the rib-shaped light-shielding material and the color filter can be formed at the same time using a rib-shaped light-shielding material resist material and a color filter resist material. Next, as shown in FIG. 6 (d), a transparent adhesive 14 is placed on the color filters 12 R, 12 G, 12 BL and the white light shielding material 18 of the color filter film 13 with a partition wall, and is attached to the transparent panel substrate 2. A color filter substrate 15 produced together is prepared, and a back side panel substrate 1 on which a pixel electrode 5 (stripe electrode) constituting the other of the counter electrode pair is formed. Next, as shown in FIG. 6 (e), after the display media 3W and 3B are arranged in the cells of the color filter substrate 15, the color filter substrate 15 is bonded to the back side panel substrate 1 to observe the observation side panel substrate. A color display panel having a structure in which the color filters 12R, 12G, 12BL and the white light-shielding material 18 are arranged inside the transparent panel substrate 2 constituting the above is manufactured.

  FIGS. 7A to 7E are views showing an example of a method for manufacturing a display panel for color display according to the third aspect of the present invention. In the example of the third invention shown in FIGS. 7A to 7E, first, as shown in FIG. 7A, the transparent pixel electrode 6 (stripe electrode) constituting one of the counter electrode pairs is formed. A colorless and transparent film is prepared as the film base 11. Next, as shown in FIG. 7B, on the surface of the film base 11 on which the transparent pixel electrode 6 is not formed, the partition walls 4 for forming cells for arranging display media later. Form. Next, as shown in FIG. 7C, color filters 12R, 12G, and 12BL are formed on the surface on which the electrode 6 is not formed to produce a color filter film 13 with a partition wall. The color filter can be produced by any of printing methods such as inkjet printing and flexographic printing, and photolithographic methods. However, ink-jet printing and photolithographic methods are preferred for producing dot-shaped color filters. Flexographic printing and photolithography are preferred. In the photolithography method, the partition wall and the color filter can be formed simultaneously using the partition wall resist material and the color filter resist material. Next, as shown in FIG. 7 (d), a color filter substrate prepared by disposing a transparent adhesive 14 on the transparent pixel electrode 6 of the color filter film 13 with a partition wall and bonding it to the transparent panel substrate 2. 15 and a back side panel substrate 1 on which a pixel electrode 5 (stripe electrode) constituting the other of the counter electrode pair is formed. Next, as shown in FIG. 7E, after the display media 3W and 3B are arranged in the cells of the color filter substrate 15, the color filter substrate 15 is bonded to the back side panel substrate 1 to observe the observation side panel substrate. A color display panel having a structure in which the color filters 12R, 12G, and 12BL are arranged inside the transparent panel substrate 2 that constitutes the above is manufactured.

  FIGS. 8A to 8E are views showing another example of a method for manufacturing a display panel for color display according to the third aspect of the present invention. In the example of the third invention shown in FIGS. 8A to 8E, first, as shown in FIG. 8A, the transparent pixel electrode 6 (stripe electrode) constituting one of the counter electrode pairs is formed. A colorless and transparent film is prepared as the film base 11. Next, as shown in FIG. 8B, a part of the film base 11 on which the transparent pixel electrode 6 is not formed is partially inserted through a rib-shaped black light shielding material 19 later. A partition wall 4 for forming a cell for disposing a display medium is formed. Next, as shown in FIG. 8C, color filters 12R, 12G, and 12BL are formed on the surface where the electrode 6 is not formed to produce a color filter film 13 with a partition wall. The color filter can be produced by any of printing methods such as inkjet printing and flexographic printing, and photolithographic methods. However, ink-jet printing and photolithographic methods are preferred for producing dot-shaped color filters. Flexographic printing and photolithography are preferred. In the photolithography method, the partition wall and the color filter can be formed simultaneously using the partition wall resist material and the color filter resist material. Next, as shown in FIG. 8 (d), a color filter substrate prepared by disposing a transparent adhesive 14 on the transparent pixel electrode 6 of the color filter film 13 with a partition wall and bonding it to the transparent panel substrate 2. 15 and a back side panel substrate 1 on which a pixel electrode 5 (stripe electrode) constituting the other of the counter electrode pair is formed. Next, as shown in FIG. 8E, after the display media 3W and 3B are arranged in the cells of the color filter substrate 15, the color filter substrate 15 is bonded to the back side panel substrate 1, and the observation side panel substrate is bonded. A color display panel having a structure in which the color filters 12R, 12G, and 12BL and the rib-shaped black light shielding material 19 are arranged inside the transparent panel substrate 2 that constitutes is manufactured.

  9A to 9E are views showing an example of a method for manufacturing a color display panel according to the fourth aspect of the present invention. In the example of the fourth invention shown in FIGS. 9A to 9E, first, as shown in FIG. 9A, the transparent pixel electrode 6 (stripe electrode) constituting one of the counter electrode pairs is formed. A colorless and transparent film is prepared as the film base 11. Next, as shown in FIG. 9B, color filters 12R, 12G, and 12BL are formed on the surface of the film base 11 on which the transparent pixel electrode 6 is not formed. Next, as shown in FIG. 9 (c), a partition wall 4 is formed on the surface on which the color filters 12R, 12G, and 12BL are formed, and a partition wall 4 for forming a cell for arranging a display medium later is formed. 13 is produced. The color filter can be produced by any of printing methods such as inkjet printing and flexographic printing, and photolithographic methods. However, ink-jet printing and photolithographic methods are preferred for producing dot-shaped color filters. Flexographic printing and photolithography are preferred. In the photolithography method, the partition wall and the color filter can be formed simultaneously using the partition wall resist material and the color filter resist material. Next, as shown in FIG. 9 (d), a color filter substrate prepared by disposing a transparent adhesive 14 on the transparent pixel electrode 6 of the color filter film 13 with a partition wall and bonding it to the transparent panel substrate 2. 15 and a back side panel substrate 1 on which a pixel electrode 5 (stripe electrode) constituting the other of the counter electrode pair is formed. Next, as shown in FIG. 9E, after the display media 3W and 3B are arranged in the cells of the color filter substrate 15, the color filter substrate 15 is bonded to the back side panel substrate 1, and the observation side panel substrate is bonded. A color display panel having a structure in which the color filters 12R, 12G, and 12BL are arranged inside the transparent panel substrate 2 that constitutes the above is manufactured.

  FIGS. 10A to 10E are views showing another example of a method for manufacturing a display panel for color display according to the fourth invention of the present invention. In the example of the fourth invention shown in FIGS. 10A to 10E, first, as shown in FIG. 10A, the transparent pixel electrode 6 (stripe electrode) constituting one of the counter electrode pairs is formed. A colorless and transparent film is prepared as the film base 11. Next, as shown in FIG. 10B, color filters 12R, 12G, and 12BL and a rib-like black light shielding material 19 are provided on the surface of the film base 11 on which the transparent pixel electrode 6 is not formed. Form. Next, as shown in FIG. 10 (c), a rib-shaped black light shielding material is partially formed on the surface on which the color filters 12R, 12G, and 12BL are formed. The color filter film 13 with a partition is produced. The color filter and the rib-shaped light-shielding material may be produced by preparing the color filter after producing the rib-shaped light-shielding material, or may produce the rib-shaped light-shielding material after producing the color filter. You may produce a color filter simultaneously. When the color filter is formed by ink jet printing, it is preferable that the rib-shaped light-shielding material is prepared in advance so that the rib-shaped light-shielding material becomes a bank that suppresses the flow and spread of the color filter ink. In the flexographic printing method, the rib-shaped light shielding material and the color filter can be flexographically printed at the same time using the rib-shaped light shielding material flexo ink and the color filter flexo ink. In the photolithographic method, the rib-shaped light-shielding material and the color filter can be formed at the same time using a rib-shaped light-shielding material resist material and a color filter resist material. Next, as shown in FIG. 10 (d), a color filter substrate prepared by disposing a transparent adhesive 14 on the transparent pixel electrode 6 of the color filter film 13 with a partition wall and bonding it to the transparent panel substrate 2. 15 and a back side panel substrate 1 on which a pixel electrode 5 (stripe electrode) constituting the other of the counter electrode pair is formed. Next, as shown in FIG. 10 (e), after the display media 3W and 3B are arranged in the cells of the color filter substrate 15, the color filter substrate 15 is bonded to the rear panel substrate 1, and the observation side panel substrate is bonded. A color display panel having a structure in which the color filters 12R, 12G, and 12BL and the rib-shaped black light shielding material 19 are arranged inside the transparent panel substrate 2 that constitutes is manufactured.

  Next, an example of the panel configuration of the color display panel manufactured by the above-described method for manufacturing a color display panel according to the present invention will be described. 11 (a) to 11 (c) to 16 (a) and 16 (b) are diagrams for explaining an example of the panel configuration of the color display panel manufactured by the method for manufacturing a color display panel of the present invention. FIG. In these drawings, the same members as those in the examples shown in FIGS. 1 (a) and 1 (b) to FIGS. 10 (a) to 10 (e) are denoted by the same reference numerals, and the description thereof is omitted.

  In the example shown in FIGS. 11A to 11C, FIG. 11A shows a plane of one display unit in the display panel for color display, and FIG. 11B shows the AA line in FIG. 11C shows a cross section taken along line BB in FIG. 11A. In this example, an example of one display unit in which the cell forming portion 4-2 for forming four cells is provided inside the inter-substrate gap securing portion 4-1 of the partition wall 4 is shown. One electrode pair formed by orthogonally intersecting the stripe electrodes 5 and 6 is associated with the dot-like three primary color filters 12R, 12G and 12BL and the colorless and transparent filter 12T on the color filter film 13. Then, the partition walls 4 (parts for securing the inter-substrate gap 4-1 and the cell forming part 4-2) are formed on the color filter substrate 15 side. The substrate 1 and the adhesive 21 are joined. The examples shown in FIGS. 11A to 11C have a laminated structure in the order of transparent pixel electrode 6 / color filter film substrate 11 / color filters 12R, 12G, 12BL / adhesive layer 14 / transparent substrate 2. This corresponds to the panel configuration of the display panel for color display according to the first and second inventions of the present invention.

  In the example shown in FIGS. 12A to 12C, FIG. 12A shows a plane of one display unit in the color display panel, and FIG. 12B shows the AA line in FIG. FIG. 12C shows a cross section taken along line BB in FIG. 12A. In this example, an example of one display unit in which the cell forming portion 4-2 for forming four cells is provided inside the inter-substrate gap securing portion 4-1 of the partition wall 4 is shown. One electrode pair formed by orthogonally intersecting the stripe electrodes 5 and 6 is associated with the dot-like three primary color filters 12R, 12G and 12BL and the colorless and transparent filter 12T on the color filter film 13. Then, the partition walls 4 (parts for securing the inter-substrate gap 4-1 and the cell forming part 4-2) are formed on the color filter substrate 15 side. The substrate 1 and the adhesive 21 are joined. The examples shown in FIGS. 12A to 12C have a laminated structure in the order of color filters 12R, 12G, 12BL / color filter film substrate 11 / transparent pixel electrode 6 / adhesive layer 14 / transparent substrate 2. This corresponds to the panel configuration of the color display panel according to the third and fourth aspects of the present invention.

  In the example shown in FIGS. 13A and 13B, FIG. 13A shows a plane of one display unit in the color display panel, and FIG. 13B shows the AA line in FIG. 13A. The cross section along is shown. In this example, an example of one display unit in which the cell forming portion 4-2 for forming three rectangular cells is provided inside the inter-substrate gap securing portion 4-1 of the partition wall 4 is shown. One electrode pair formed by orthogonally intersecting the stripe electrodes 5 and 6 and the striped three primary color filters 12R, 12G, and 12BL on the color filter film 13 are made to correspond to each other. Then, the partition walls 4 (parts for securing the inter-substrate gap 4-1 and the cell forming part 4-2) are formed on the color filter substrate 15 side. The substrate 1 and the adhesive 21 are joined. The example shown in FIGS. 13A and 13B has a laminated structure in the order of transparent pixel electrode 6 / color filter film substrate 11 / color filters 12R, 12G, 12BL / adhesive layer 14 / transparent substrate 2. This corresponds to the panel configuration of the display panel for color display according to the first and second inventions of the present invention.

  14 (a) and 14 (b), FIG. 14 (a) shows a plane of one display unit in the color display panel, and FIG. 14 (b) is an AA line in FIG. 14 (a). The cross section along is shown. In this example, an example of one display unit in which the cell forming portion 4-2 for forming three rectangular cells is provided inside the inter-substrate gap securing portion 4-1 of the partition wall 4 is shown. One electrode pair formed by orthogonally intersecting the stripe electrodes 5 and 6 and the striped three primary color filters 12R, 12G, and 12BL on the color filter film 13 are made to correspond to each other. Moreover, the black light shielding material 17 is formed in the both ends of the same layer of the color filters 12R, 12G, and 12BL constituting one display unit. Then, the partition walls 4 (parts for securing the inter-substrate gap 4-1 and the cell forming part 4-2) are formed on the color filter substrate 15 side. The substrate 1 and the adhesive 21 are joined. 14 (a) and 14 (b) show the order of transparent pixel electrode 6 / color filter film substrate 11 / color filters 12R, 12G, 12BL and black light shielding material 17 / adhesive layer 14 / transparent substrate 2. This corresponds to the panel configuration of the display panel for color display according to the first and second inventions of the present invention.

  15 (a) and 15 (b), FIG. 15 (a) shows a plane of one display unit in the color display panel, and FIG. 15 (b) is an AA line in FIG. 15 (a). The cross section along is shown. In this example, an example of one display unit in which the cell forming portion 4-2 for forming three rectangular cells is provided inside the inter-substrate gap securing portion 4-1 of the partition wall 4 is shown. One electrode pair formed by orthogonally intersecting the stripe electrodes 5 and 6 and the striped three primary color filters 12R, 12G, and 12BL on the color filter film 13 are made to correspond to each other. In addition, white light shielding materials 18 are formed on both ends of the same layer of the color filters 12R, 12G, and 12BL constituting one display unit. Then, the partition walls 4 (parts for securing the inter-substrate gap 4-1 and the cell forming part 4-2) are formed on the color filter substrate 15 side. The substrate 1 and the adhesive 21 are joined. 14 (a) and 14 (b) show the order of transparent pixel electrode 6 / color filter film substrate 11 / color filters 12R, 12G, 12BL and white light shielding material 18 / adhesive layer 14 / transparent substrate 2. This corresponds to the panel configuration of the display panel for color display according to the first and second inventions of the present invention.

  In the example shown in FIGS. 16A and 16B, FIG. 16A shows the plane of one display unit in the color display panel, and FIG. 16B shows the AA line in FIG. The cross section along is shown. In this example, an example of one display unit in which the cell forming portion 4-2 for forming three rectangular cells is provided inside the inter-substrate gap securing portion 4-1 of the partition wall 4 is shown. One electrode pair formed by orthogonally intersecting the stripe electrodes 5 and 6 and the dot-shaped three primary color filters 12R, 12G, and 12BL on the color filter film 13 are made to correspond to each other. Further, a rib-shaped black light shielding material 19 is formed between the color filters in the same layer of the color filters 12R, 12G, and 12BL constituting one display unit. Then, the partition walls 4 (inter-substrate gap securing part 4-1 and cell forming part 4-2) are formed on the color filter substrate 15 side via the rib-like black light shielding material 19, and at least the inter-substrate gap among the partition walls 4 is secured. The part 4-1 is joined to the back panel substrate 1 with an adhesive 21. 14A and 14B show color filters 12R, 12G, and 12BL and a rib-shaped black light shielding material 19 / color filter film base material 11 / transparent pixel electrode 6 / adhesive layer 14 / transparent substrate 2. Corresponds to the panel configuration of the display panel for color display according to the third and fourth inventions of the present invention.

  Next, a preferred example of the panel configuration of the color display panel manufactured by the above-described method for manufacturing a color display panel according to the present invention will be described.

  The film substrate for forming the transparent pixel electrode and the color filter layer is preferably a transparent sheet made of a flexible transparent resin film, such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or polyethersulfone (PES). Acrylic resins such as triacetyl cellulose (TAC), polycarbonate (PC), and polymethyl methacrylate (PMMA) are preferably used. The thickness is preferably as thin as possible as long as it does not hinder the formation of the transparent pixel electrode and the color filter, and is in the range of 9 μm to 200 μm, more preferably in the range of 9 μm to 100 μm.

  The adhesive that bonds the color filter film to the transparent panel substrate is a colorless and transparent material such as an acrylic adhesive, a methacrylic adhesive, or an epoxy adhesive. A colorless and transparent adhesive containing both an agent and a thermosetting initiator, or a hot-melt transparent adhesive such as ethylene vinyl acetate (EVA) or polyvinyl butyral (PVB) may be used. it can.

  As a method for bonding the color filter film and the transparent panel substrate, a press method using a press machine or a roller laminating method using a roller is used. In this case, an adhesive containing both a photocuring initiator and a thermosetting initiator was used as an adhesive, and the color filter film and the transparent panel substrate were aligned and bonded (temporary bonding) by a curing reaction with the photoinitiator. Thereafter, it is preferable to securely bond the color filter film and the transparent panel substrate by a curing reaction with a thermal initiator using a heat press or a heat roller. In addition, when the color filter film and the transparent panel substrate are bonded together, the color filter film and the transparent panel substrate are aligned using a hot melt adhesive that softens when heated to the adhesive and hardens when cooled. It is also preferable that the hot-melt adhesive is softened by heating using a press or a heat roller, and then cooled and cured to securely bond the color filter film and the transparent panel substrate. When a softened hot melt adhesive is cured and bonded, a vacuum laminator is used to remove the gas while reducing the pressure between the color filter film and the transparent panel substrate, and the color filter film and the transparent panel substrate. It is preferable to perform bonding.

  As a preferred example of the display panel for color display of the present invention, color filters of three colors of R: red, G: green, B: blue, C: cyan, M: magenta, and Y: yellow are used for each pixel. Displayed in stripes or dots in the form of a display unit pixel with these three pixels, or with four pixels, one pixel adjacent to the other three pixels and no color filter. A unit pixel may be configured to form a 2 × 2 pixel array.

  In the present invention, a color filter layer is formed on the surface opposite to the surface on which the transparent pixel electrode is patterned by using a flexographic printing method, an inkjet printing method, or a photolithography method. A filter film is bonded to a transparent substrate using a colorless and transparent adhesive to produce a color filter substrate.

  On the base material of the color filter film, a partition wall portion for securing a gap between substrates and a partition wall portion dedicated for cell formation are formed in the panel structure of a display panel for color display. As the partition material, a liquid resist material or a dry film resist material is preferably used. As an example, Alfo NIT2 (manufactured by Nichigo Morton) or PDF300 (manufactured by Nippon Steel Chemical Co., Ltd.) can be used. In the panel structure of a display panel for color display, a partition portion for securing a gap between substrates and a partition portion dedicated for cell formation are also formed on the other back side substrate that is not a color filter substrate, and the panel structure When the body is formed, both the partition wall portions may be opposed to each other, or the opposed portions may not be bonded. A dry film resist material having a thickness corresponding to the height of the partition wall to be formed is laminated on the panel substrate, and patterned by a photolithography method using a photomask having a predetermined shape.

  The width of the partition wall portion for securing the gap between the panel substrates is in the range of 20 μm to 100 μm, the width of the partition wall portion dedicated for cell formation is in the range of 5 μm to 30 μm, and the width of the partition wall portion dedicated for cell formation is between the panel substrates. It is preferable to make it smaller than the width of the partition for securing the gap.

  As an electrode material of the transparent pixel electrode disposed on the color filter substrate, indium tin oxide (ITO), indium oxide, zinc-doped indium oxide (IZO), aluminum-doped zinc oxide (AZO), antimony tin oxide (ATO), Examples thereof include transparent conductive metal oxides such as conductive tin oxide and conductive zinc oxide, and transparent conductive polymers such as polyaniline, polypyrrole, and polythiophene.

  The electrode material for the pixel electrode provided on the back substrate of the color display panel is indium tin oxide (ITO), indium oxide, zinc-doped indium oxide (IZO), aluminum-doped zinc oxide (AZO), antimony tin oxide. (ATO), conductive metal oxides such as conductive tin oxide and conductive zinc oxide, conductive polymers such as polyaniline, polypyrrole and polythiophene, metals such as gold, silver, copper, aluminum, nickel and chromium, And alloys containing these metals as main components. The electrode provided on the back side substrate may be transparent or may not be transparent.

  As a method for forming an electrode, a method of forming the above-described material into a thin film by sputtering, vacuum deposition, CVD (chemical vapor deposition), coating, or the like, a method of laminating a metal foil (for example, rolled copper foil), A method in which a conductive agent is mixed with a solvent or a synthetic resin binder and applied. The above-mentioned material that can be patterned and is electrically conductive can be preferably used. In addition, the electrode thickness on the display surface side is not particularly limited as long as the conductivity can be secured and the light transmittance is not hindered, and is preferably 0.01 to 10 μm, more preferably 0.05 to 5 μm. Moreover, the back side electrode thickness should just ensure electroconductivity, 0.01-10 micrometers is preferable and 0.05-5 micrometers is more preferable.

  A transparent metal oxide conductive material such as ITO, which is suitable as an electrode provided on the color filter film, is less flexible than the metal material and has a higher electrical resistance than the metal material. When using a transparent metal oxide-based conductive material as the electrode of this color filter film, in order to prevent disconnection in the transparent electrode material and the occurrence of voltage drop at the pixel electrode located at a long distance from the power source, It is preferable to use in combination with a fine metal wire. The width of this fine metal wire is 1 μm to 10 μm, and if arranged at random intervals in the range of 50 μm to 500 μm, it does not hinder display visibility due to non-transparency, and generates interference moiré that causes a decrease in display visibility. It is preferable because it does not occur. Since the electrode provided outside the information display screen region and the electrode provided on the back substrate need not consider light transmittance, the metal material having a small electric resistance and excellent flexibility is preferably used. In addition, the thickness of the electrode provided on the rear substrate is designed to be 0.01 to 10 μm from the viewpoint of electrical resistance, productivity, and cost.

  EXAMPLES Hereinafter, the present invention will be specifically described with reference to examples and comparative examples of the present invention, but the present invention is not limited to the following.

<About display panel for color display produced in Example>
In the examples described below, a white display medium configured as a group of particles including negatively charged white particles in a cell surrounded by a partition wall of a color filter substrate produced as an observation side panel substrate, and positively charged black particles After being arranged in an equal volume so that the volume occupancy ratio of the black display medium configured as a particle group containing 25% is 25%, a transparent indium tin oxide (ITO) film is patterned with a width of 200 μm and a space of 30 μm. The other back side panel substrate (PET substrate having a thickness of 200 μm) with the ITO stripe electrode was joined by an epoxy adhesive placed on the top of the partition for securing the gap between the panel substrates, and the stripe electrodes crossed orthogonally. A dot matrix type color display panel having a configuration in which pixel electrode pairs to be formed are arranged in a matrix was obtained.

<Display Media Used in Examples>
(Black particles used for black display media)
100 parts by weight of polymethylpentene polymer (TPX-R18: manufactured by Mitsui Chemicals), 5 parts by weight of carbon black (special black 4: manufactured by Degussa) as a colorant, and titanium dioxide (Taipaque CR-90: Ishihara Sangyo) 90 parts by weight) and 3 parts by weight of a nigrosine compound (Bontron N07: manufactured by Orient Chemical Co., Ltd.) as a positively charged charge control agent are melt-kneaded by a twin-screw kneader, and a jet mill (Lab Jet Mill IDS-LJ type) : Nippon Pneumatic Co., Ltd.), finely pulverized, classified using a classifier (MDS-2: Nihon Numatic Industrial), and using a melt spheronizer (MR-10: Nihon Numatic Kogyo) Thus, positively charged black particles having an average particle diameter of 9.2 μm were obtained.

(White particles used for white display media)
100 parts by weight of polymethylpentene polymer (TPX-R18: made by Mitsui Chemicals), 100 parts by weight of titanium dioxide (Taipaque CR-90: made by Ishihara Sangyo Co., Ltd.) as a colorant, and phenol-based condensation as a negative charge control agent 5 parts by weight of the product (Bontron E89: manufactured by Orient Chemical Co., Ltd.) was melt-kneaded with a twin-screw kneader and finely pulverized with a jet mill (Lab Jet Mill IDS-LJ type: Nippon Pneumatic Co., Ltd.). Classification using MDS-2: Nihon Numatic Kogyo Co., Ltd., melt spheronization using a melt spheronizer (MR-10: Nihon Numatic Kogyo Co., Ltd.), negative chargeability with an average particle size of 9.5 μm White particles were obtained.

<Example 1>
A transparent indium tin oxide (ITO) film is patterned with a width of 200 μm and a space of 30 μm, and the surface of the colorless transparent film (thickness 125 μm) made of polyethylene terephthalate (PET) with an ITO line electrode is formed on the surface. The dry film resist material Alfo NIT2 (manufactured by Nichigo Morton Co., Ltd.) was laminated and patterned by a photolithographic method using a photomask of a predetermined shape to form lattice-like partition walls corresponding to the pixels. Ink-jet printing of primary color filters of red (R), green (G), and blue (B) according to the pixel size (200μm × 200μm) on the surface opposite to the surface on which the PET film electrodes and barrier ribs are formed Formed in an array 2 × 2. A color filter of colorless and transparent color (T) was formed without forming a color filter for one pixel. In the ink jet method, since it is preferable to control the size of the ink droplets according to the size of the target color filter layer formation region, one display unit (1 dot) in which 200 μm square pixels are arranged in 2 × 2. A color filter was formed by forming ink droplets controlled to 6 to 60 picoliters for one of the pixels.

  As the color filter material, a photocurable color filter material (ink) was used. As an acrylic monomer, DCP-A (dimethylol cyclodecane di-7 acrylate) manufactured by Kyoeisha Co., Ltd. was used. As a photoinitiator, Irgacure 184 of Ciba Specialty Chemicals was used. Next, after placing an acrylic adhesive containing a photocurable initiator and a thermosetting initiator in an acrylic resin monomer on the color filter of the color filter film, a transparent panel substrate (a PET substrate having a thickness of 125 μm) ) To obtain a color filter substrate. A dot matrix type color display panel using this color filter substrate as an observation side substrate was produced.

<Example 2>
A transparent indium tin oxide (ITO) film patterned with a width of 200 μm and a space of 30 μm was used in the same manner as in Example 1 except that a colorless transparent film made of polyethylene terephthalate (PET) with an ITO line electrode having a thickness of 9 μm was used. A dot matrix type color display panel was produced.

<Example 3>
A transparent indium tin oxide (ITO) film patterned with a width of 200 μm and a space of 30 μm was used in the same manner as in Example 1 except that a colorless transparent film made of polyethylene terephthalate (PET) with an ITO line electrode having a thickness of 200 μm was used. A dot matrix type color display panel was produced.

<Example 4>
A transparent indium tin oxide (ITO) film patterned with a width of 200 μm and a space of 30 μm was used in the same manner as in Example 1 except that a colorless transparent film made of polyethylene terephthalate (PET) with an ITO line electrode having a thickness of 300 μm was used. A dot matrix type color display panel was produced.

<Example 5>
A transparent indium tin oxide (ITO) film is patterned with a width of 200 μm and a space of 30 μm, and the surface of the colorless transparent film (thickness 125 μm) made of polyethylene terephthalate (PET) with an ITO line electrode is formed on the surface. The dry film resist material Alfo NIT2 (manufactured by Nichigo Morton Co., Ltd.) was laminated and patterned by a photolithographic method using a photomask of a predetermined shape to form lattice-like partition walls corresponding to the pixels. Flexo is applied to the red color (R), green (G), and blue (B) color filters on the surface opposite to the surface on which the PET film electrodes and barrier ribs are formed in accordance with the pixel size (200 μm × 200 μm). (Letter) A three-row stripe was formed by a printing method. The width of the color filter formed in a stripe shape was set to 200 μm, which is the same as the width of one pixel. A photocurable color filter material was obtained by dispersing red, blue, and green pigments in ultraviolet (UV) flexographic ink, respectively. Irgacure 184 from Ciba Specialty Chemicals was used as the photoinitiator. Using this RGB flexo ink, striped color filters were printed in sequence. An anilox roll having 500 lines was used and adjusted to a film thickness of 1.5 μm.

  Next, after placing an acrylic adhesive containing a photocurable initiator and a thermosetting initiator in an acrylic resin monomer on the color filter of the color filter film, a transparent panel substrate (a PET substrate having a thickness of 125 μm) ) To obtain a color filter substrate. A dot matrix type color display panel using this color filter substrate as an observation side substrate was produced.

<Example 6>
A transparent indium tin oxide (ITO) film is patterned with a width of 200 μm and a space of 30 μm, and the surface of the colorless transparent film (thickness 125 μm) made of polyethylene terephthalate (PET) with an ITO line electrode is formed on the surface. The dry film resist material Alfo NIT2 (manufactured by Nichigo Morton Co., Ltd.) was laminated and patterned by a photolithographic method using a photomask of a predetermined shape to form lattice-like partition walls corresponding to the pixels. Three primary color filters of red (R), green (G), and blue (B) and colorless and transparent according to the pixel size (200μm × 200μm) on the surface opposite to the surface on which the PET film electrodes and barrier ribs are formed Color (T) color filters were formed in a 2 × 2 array by photolithography. Apply a negative photoresist agent with color filter pigment dispersed on the surface opposite to the surface on which the ITO electrode is formed, using a slit coater so that the film thickness becomes 2.0 μm. 3 colors of red, blue and green at 3 positions corresponding to 4 pixels of 1 display unit composed of 2 × 2 formed by ITO electrode by developing using sodium carbonate aqueous solution A color filter film with a partition wall was produced without producing a color filter at one position.

  Next, after placing an acrylic adhesive containing a photocurable initiator and a thermosetting initiator in an acrylic resin monomer on the color filter of the color filter film, a transparent panel substrate (a PET substrate having a thickness of 125 μm) ) To obtain a color filter substrate. A dot matrix type color display panel using this color filter substrate as an observation side substrate was produced.

<Example 7>
A transparent indium tin oxide (ITO) film patterned with a width of 200 μm and a space of 30 μm on the opposite side to the surface on which the electrode of a colorless transparent film (thickness 125 μm) made of polyethylene terephthalate (PET) with an ITO line electrode is formed On the surface, three primary color filters of red (R), green (G), and blue (B) are arranged by an inkjet printing method in accordance with one display unit in which pixels having a size of 200 μm × 200 μm are arranged in an array of 2 × 2 2 × 2 Formed with. A color filter was not disposed at a position where a colorless transparent color (T) was obtained. A lattice film corresponding to pixels by laminating a dry film resist material Alfo NIT2 (manufactured by Nichigo Morton Co., Ltd.) having a thickness of 50 μm on the surface of the PET film on which the color filter is formed, and patterning by a photolithographic method using a photomask of a predetermined shape. A partition wall was formed. In the ink jet method, since it is preferable to control the size of the ink droplets according to the size of the target color filter layer formation region, one display unit (1 dot) in which 200 μm square pixels are arranged in 2 × 2. A color filter was formed by forming ink droplets controlled to 6 to 60 picoliters for one of the pixels.

  Next, after an acrylic adhesive containing a photocurable initiator and a thermosetting initiator in an acrylic resin monomer is placed on the electrode of the color filter film, a transparent panel substrate (PET substrate having a thickness of 125 μm) To obtain a color filter substrate. A dot matrix type color display panel using this color filter substrate as an observation side substrate was produced.

<Example 8>
A transparent indium tin oxide (ITO) film is patterned with a width of 200 μm and a space of 30 μm, and the surface of the colorless transparent film (thickness 125 μm) made of polyethylene terephthalate (PET) with an ITO line electrode is formed on the surface. The dry film resist material Alfo NIT2 (manufactured by Nichigo Morton Co., Ltd.) was laminated and patterned by a photolithographic method using a photomask of a predetermined shape to form lattice-like partition walls corresponding to the pixels. A black flexo ink and a red (R), green (G), black, and carbon black compounded in accordance with the pixel size (200 μm × 200 μm) on the surface opposite to the surface on which the electrodes and partition walls of the PET film are formed. A black matrix and a red matrix in which a flexographic ink for a three-color filter containing each color pigment of blue (B) is flexographically printed and rib-shaped black light-shielding materials having a width of 30 μm are arranged in a grid so as to surround the pixels. A color filter was formed in which three colors of (R), green (G), and blue (B) were arranged in three rows of stripes. The width of the color filter formed in a stripe shape was set to 200 μm, which is the same as the width of one pixel. A photocurable color filter material was obtained by dispersing red, blue, and green pigments in ultraviolet (UV) flexographic ink, respectively. Irgacure 184 from Ciba Specialty Chemicals was used as the photoinitiator. Using this RGB flexo ink, striped color filters were printed in sequence. An anilox roll having 500 lines was used and adjusted to a film thickness of 1.5 μm.

  Next, after placing an acrylic adhesive containing a photocurable initiator and a thermosetting initiator in an acrylic resin monomer on the color filter of the color filter film, a transparent panel substrate (a PET substrate having a thickness of 125 μm) ) To obtain a color filter substrate. A dot matrix type color display panel using this color filter substrate as an observation side substrate was produced.

<Example 9>
A transparent indium tin oxide (ITO) film patterned with a width of 200 μm and a space of 30 μm on the opposite side to the surface on which the electrode of a colorless transparent film (thickness 125 μm) made of polyethylene terephthalate (PET) with an ITO line electrode is formed Using a photolithographic method that exposes and develops after laminating a black resist film with a thickness of 2 μm blended with carbon black on the surface around 4 pixels (200 μm × 200 μm) as a display unit, 30 μm A black matrix of black matrix was formed by arranging rib-shaped black light-shielding materials having a width so as to surround pixels. Three primary color filters of red (R), green (G), and blue (B) were formed in an array of 2 × 2 by an inkjet printing method inside the lattice of the formed rib-shaped black light shielding material. A color filter of colorless and transparent color (T) was formed without forming a color filter for one pixel. A dry film resist material Alfo NIT2 (manufactured by Nichigo Morton) having a thickness of 50 μm is laminated on the surface on which the color filter and the rib-shaped black light-shielding material are formed, and patterned by a photolithographic method using a photomask having a predetermined shape. Corresponding grid-like partitions were formed. A part of the partition walls was formed on a rib-like black light shielding material. As the color filter material, a photocurable color filter material (ink) was used. As an acrylic monomer, DCP-A (dimethylol cyclodecane di-7 acrylate) manufactured by Kyoeisha Co., Ltd. was used. As a photoinitiator, Irgacure 184 of Ciba Specialty Chemicals was used.

  Next, after an acrylic adhesive containing a photocurable initiator and a thermosetting initiator in an acrylic resin monomer is placed on the electrode of the color filter film, a transparent panel substrate (PET substrate having a thickness of 125 μm) To obtain a color filter substrate. A dot matrix type color display panel using this color filter substrate as an observation side substrate was produced.

<Example 11>
A transparent indium tin oxide (ITO) film is patterned with a width of 200 μm and a space of 30 μm on the surface opposite to the surface on which an electrode of a colorless transparent film (thickness 125 μm) made of polyethylene terephthalate (PET) with an ITO line electrode is formed. Using a photolithographic method that exposes and develops a black resist film with a thickness of 2 μm mixed with carbon black in accordance with the pixel size (200 μm × 200 μm), a rib-shaped black light-shielding material with a width of 30 μm A black matrix was formed by arranging in a grid pattern so as to surround. Three primary color filters of red (R), green (G), and blue (B) were formed in an array of 2 × 2 by an inkjet printing method inside the lattice of the formed rib-shaped black light shielding material. A color filter of colorless and transparent color (T) was formed without forming a color filter for one pixel. A dry film resist material Alfo NIT2 (manufactured by Nichigo Morton) having a thickness of 50 μm is laminated on the surface on which the electrode opposite to the surface on which the color filter and the rib-shaped black light shielding material are formed, and a photomask having a predetermined shape is formed. Patterning was performed by the photolithography method used to form a lattice-shaped partition wall corresponding to the pixel. In the ink jet method, since it is preferable to control the size of the ink droplets according to the size of the target color filter layer formation region, one display unit (1 dot) in which 200 μm square pixels are arranged in 2 × 2. A color filter was formed by forming ink droplets controlled to 6 to 60 picoliters for one of the pixels.

  As the color filter material, a photocurable color filter material (ink) was used. As an acrylic monomer, DCP-A (dimethylol cyclodecane di-7 acrylate) manufactured by Kyoeisha Co., Ltd. was used. As a photoinitiator, Irgacure 184 of Ciba Specialty Chemicals was used. Next, after placing an acrylic adhesive containing a photocurable initiator and a thermosetting initiator in an acrylic resin monomer on the color filter and black matrix of the color filter film, a transparent panel substrate (thickness 125 μm) To a color filter substrate. A dot matrix type color display panel using this color filter substrate as an observation side substrate was produced.

<Example 12>
A colorless transparent film made of polyethylene terephthalate (PET) with an ITO line electrode patterned with a transparent indium tin oxide (ITO) film with a width of 200 μm and a space of 30 μm is opposite to the surface on which the electrode is formed. On this surface, three primary color filters of red (R), green (G), and blue (B) were formed in an array of 2 × 2 by the inkjet printing method in accordance with the pixel size (200 μm × 200 μm). A color filter of colorless and transparent color (T) was formed without forming a color filter for one pixel. A dry film resist material Alfo NIT2 (manufactured by Nichigo Morton) having a thickness of 50 μm is laminated on the surface on which the electrode opposite to the surface on which the color filter is formed, and is patterned by a photolithography method using a photomask of a predetermined shape. Then, a grid-like partition wall corresponding to the pixel was formed to obtain a color filter substrate. In the ink jet method, since it is preferable to control the size of the ink droplets according to the size of the target color filter layer formation region, one display unit (1 dot) in which 200 μm square pixels are arranged in 2 × 2. A color filter was formed by forming ink droplets controlled to 6 to 60 picoliters for one of the pixels.

  As the color filter material, a photocurable color filter material (ink) was used. As an acrylic monomer, DCP-A (dimethylol cyclodecane di-7 acrylate) manufactured by Kyoeisha Co., Ltd. was used. As a photoinitiator, Irgacure 184 of Ciba Specialty Chemicals was used. Next, after placing an acrylic adhesive containing a photocurable initiator and a thermosetting initiator in an acrylic resin monomer on the color filter of the color filter film, a transparent panel substrate (a PET substrate having a thickness of 125 μm) ) To obtain a color filter substrate. A dot matrix type color display panel using this color filter substrate as an observation side substrate was produced.

<Example 13>
A transparent indium tin oxide (ITO) film patterned with a width of 200 μm and a space of 30 μm was used in the same manner as in Example 12 except that a colorless transparent film made of polyethylene terephthalate (PET) with an ITO line electrode having a thickness of 200 μm was used. A dot matrix type color display panel was produced.

<Example 14>
A transparent indium tin oxide (ITO) film was patterned with a width of 200 μm and a space of 30 μm, and a colorless transparent film made of polyethylene terephthalate (PET) with an ITO line electrode was used in the same manner as in Example 12 except that a film having a thickness of 300 μm was used. A dot matrix type color display panel was produced.

<Example 15>
A transparent indium tin oxide (ITO) film is patterned with a width of 200 μm and a space of 30 μm on the surface opposite to the surface on which an electrode of a colorless transparent film (thickness 125 μm) made of polyethylene terephthalate (PET) with an ITO line electrode is formed. A three-color filter of red (R), green (G), and blue (B) according to the pixel size (200 μm × 200 μm) was formed in three rows of stripes by a flexographic printing method. The width of the color filter formed in a stripe shape was set to 200 μm, which is the same as the width of one pixel. A photocurable color filter material was obtained by dispersing red, blue, and green pigments in ultraviolet (UV) flexographic ink, respectively. Irgacure 184 from Ciba Specialty Chemicals was used as the photoinitiator. Using this RGB flexo ink, striped color filters were printed in sequence. An anilox roll having 500 lines was used and adjusted to a film thickness of 1.5 μm.

  Next, a dry film resist material Alfo NIT2 (manufactured by Nichigo Morton Co., Ltd.) having a thickness of 50 μm is laminated on the surface on which the electrodes are formed, and is patterned by a photolithographic method using a photomask of a predetermined shape to correspond to the pixels. A partition wall was formed. Next, after placing an acrylic adhesive containing a photocurable initiator and a thermosetting initiator in an acrylic resin monomer on the color filter of the color filter film, a transparent panel substrate (a PET substrate having a thickness of 125 μm) ) To obtain a color filter substrate. A dot matrix type color display panel using this color filter substrate as an observation side substrate was produced.

<Example 16>
A transparent indium tin oxide (ITO) film patterned with a width of 200 μm and a space of 30 μm on the opposite side to the surface on which the electrode of a colorless transparent film (thickness 125 μm) made of polyethylene terephthalate (PET) with an ITO line electrode is formed On the surface, three primary color filters of red (R), green (G), and blue (B) and a color filter of colorless transparent color (T) according to the pixel size (200 μm × 200 μm) are arranged 2 × 2 by photolithography. Formed. Next, a dry film resist material Alfo NIT2 (manufactured by Nichigo Morton) having a thickness of 50 μm is laminated on the surface on which the electrode of the PET film is formed, and patterned by a photolithography method using a photomask of a predetermined shape to form a pixel. Corresponding grid-like partitions were formed. Apply a negative photoresist agent with color filter pigment dispersed on the surface opposite to the surface on which the ITO electrode is formed with a slit coater so that the film thickness becomes 2.0 μm. 3 colors of red, blue and green at 3 positions corresponding to 4 pixels of 1 display unit composed of 2 × 2 formed by ITO electrode by developing using sodium carbonate aqueous solution A color filter film with a partition wall was produced without producing a color filter at one position.

  Next, after placing an acrylic adhesive containing a photocurable initiator and a thermosetting initiator in an acrylic resin monomer on the color filter of the color filter film, a transparent panel substrate (a PET substrate having a thickness of 125 μm) ) To obtain a color filter substrate. A dot matrix type color display panel using this color filter substrate as the observation side substrate was produced.

<Example 17>
A transparent indium tin oxide (ITO) film patterned with a width of 200 μm and a space of 30 μm on the opposite side to the surface on which the electrode of a colorless transparent film (thickness 125 μm) made of polyethylene terephthalate (PET) with an ITO line electrode is formed On the surface, a dry film resist material Alfo NIT2 (manufactured by Nichigo Morton Co., Ltd.) having a thickness of 50 μm was laminated and patterned by a photolithographic method using a photomask of a predetermined shape to form a grid-like partition corresponding to the pixel. Next, three primary colors of red (R), green (G), and blue (B) according to one display unit in which pixels of size 200 μm × 200 μm are arranged in an array 2 × 2 on the surface on which a color filter of PET film is formed. Color filters were formed in an array of 2 × 2 by ink jet printing. A color filter was not disposed at a position where a colorless transparent color (T) was obtained. In the ink jet method, since it is preferable to control the size of the ink droplets according to the size of the target color filter layer formation region, one display unit (1 dot) in which 200 μm square pixels are arranged in 2 × 2. A color filter was formed by forming ink droplets controlled to 6 to 60 picoliters for one of the pixels.

  Next, after an acrylic adhesive containing a photocurable initiator and a thermosetting initiator in an acrylic resin monomer is placed on the electrode of the color filter film, a transparent panel substrate (PET substrate having a thickness of 125 μm) To obtain a color filter substrate. A dot matrix type color display panel using this color filter substrate as an observation side substrate was produced.

<Example 18>
A surface opposite to the surface on which an electrode of a colorless transparent film (thickness 125 μm) made of polyethylene terephthalate (PET) with an ITO line electrode patterned with a transparent indium tin oxide (ITO) film with a width of 200 μm and a space of 30 μm And black flexo ink containing carbon black and red (R), green (G), and blue (B) color pigments in combination with the pixel size (200 μm × 200 μm) Flexo ink is flexographically printed at the same time, and a black matrix with a 30 μm wide rib-shaped black light-shielding material arranged in a grid around the pixels and three colors of red (R), green (G), and blue (B) A color filter arranged in three rows of stripes was formed. The width of the color filter formed in a stripe shape was set to 200 μm, which is the same as the width of one pixel. A photo-curable color filter material and a black matrix material were obtained by dispersing red, blue, and green pigments and carbon black in ultraviolet (UV) flexographic ink, respectively. Irgacure 184 from Ciba Specialty Chemicals was used as the photoinitiator. Using this RGB flexo ink, striped color filters were printed in sequence. An anilox roll having 500 lines was used and adjusted to a film thickness of 1.5 μm.

  Next, a dry film resist material Alfo NIT2 (manufactured by Nichigo Morton Co., Ltd.) having a thickness of 50 μm is laminated on the surface on which the electrodes are formed, and is patterned by a photolithographic method using a photomask of a predetermined shape to correspond to the pixels. A partition wall was formed. Next, an acrylic adhesive containing a photocurable initiator and a thermosetting initiator in an acrylic resin monomer is placed on the color filter and the light shielding material of the color filter film, and then a transparent panel substrate (thickness 125 μm). To a color filter substrate. A dot matrix type color display panel using this color filter substrate as an observation side substrate was produced.

<Example 19>
A transparent indium tin oxide (ITO) film patterned with a width of 200 μm and a space of 30 μm on the opposite side to the surface on which the electrode of a colorless transparent film (thickness 125 μm) made of polyethylene terephthalate (PET) with an ITO line electrode is formed On the surface, a dry film resist material Alfo NIT2 (manufactured by Nichigo Morton Co., Ltd.) having a thickness of 50 μm was laminated and patterned by a photolithographic method using a photomask of a predetermined shape to form a grid-like partition corresponding to the pixel. Next, a 2 μm-thick black resist film containing carbon black is laminated on the surface on which the electrodes are formed in accordance with the periphery of 4 pixels (200 μm × 200 μm) as one display unit, and then exposed and developed. Using a photolithographic method, a black matrix was formed by arranging 30 μm wide rib-shaped black light shielding materials in a grid pattern so as to surround the pixels. Next, three primary color filters of red (R), green (G), and blue (B) were formed in an array of 2 × 2 by the inkjet printing method inside the lattice of the formed rib-shaped black light shielding material. A color filter of colorless and transparent color (T) was formed without forming a color filter for one pixel. A color filter film having a structure in which a rib-like black light shielding material is not formed on a part of the partition walls was used.

  As the color filter material, a photocurable color filter material (ink) was used. As an acrylic monomer, DCP-A (dimethylol cyclodecane di-7 acrylate) manufactured by Kyoeisha Co., Ltd. was used. As a photoinitiator, Irgacure 184 of Ciba Specialty Chemicals was used. Next, after placing a hot melt adhesive mainly composed of ethylene vinyl acetate (EVA) on the electrode of the color filter film, it is attached to a transparent panel substrate (PET substrate having a thickness of 125 μm) using a vacuum laminator. Together, a color filter substrate was obtained. A dot matrix type color display panel using this color filter substrate as an observation side substrate was produced.

  Evaluation display panels according to Examples 1 to 9 and Examples 11 to 19 prepared as described above were manufactured, and Evaluations 1 and 2 were performed. The results are shown in Tables 1 and 2.

  From the results of Tables 1 and 2, it was found that when the evaluation display panel was viewed from the front according to Evaluation 1, no color mixing occurred in any of the evaluation display panels, and RGB was clearly divided and displayed. Further, when the evaluation display panel is viewed obliquely at an angle of 45 degrees from the front according to Evaluation 2, the evaluation display of Example 4 has a distance between the color filter and the display medium because the film substrate is thick. In the display panel for evaluation of Example 14, although the film substrate is thick, the color filter and the display medium are close to each other and separated from each other. As a result, it was found that even when viewed from an oblique direction, no color mixing was observed.

  A display panel for color display manufactured by applying the present invention is used as an electronic POP (Point of Presence, Point of Purchase advertising) or an electronic shelf label, and is a mobile device such as a notebook computer, PDA, mobile phone, handy terminal, etc. Displays, electronic books such as electronic books, electronic newspapers, electronic manuals (instruction manuals), signboards, posters, bulletin boards such as blackboards, calculators, home appliances, display parts for automobiles, point cards, IC cards, etc. It is also suitably used as a card display unit, an electronic advertisement, an electronic price tag, an electronic score, a display unit of an RF-ID device, or a display unit (so-called rewritable paper) that performs display rewriting by connecting to external display rewriting means.

DESCRIPTION OF SYMBOLS 1, 2 Substrate 3W White display medium 3Wa Negatively charged white particle 3B Black display medium 3Ba Positively charged black particle 4 Partition 4-1 Partition for ensuring gap between panel substrates 4-2 Cell formation dedicated partition 5, 6 Electrode 7 Cell 11 Film substrate 12R, 12G, 12BL Color filter 12T Colorless transparent filter 13 Color filter film with partition wall 14 Transparent adhesive 15 Color filter substrate 17 Rib-shaped black light shielding material 18 Rib-shaped white light shielding material 19 Black light-shielding material 21 Adhesive

Claims (13)

  Forming a color filter on the surface of the film substrate on which the transparent pixel electrode is not formed, using a colorless transparent film on which the transparent pixel electrode constituting one of the counter electrode pairs is formed as a base material, On the surface on which the electrode is formed, a partition for forming a cell for later placing a display medium is formed to produce a color filter film with a partition, and a transparent adhesive is formed on the color filter of the color filter film with a partition. A color filter substrate produced by arranging and adhering to a transparent panel substrate is used as an observation side panel substrate, and after the display medium is arranged in the cell, a back surface on which a pixel electrode constituting the other of the counter electrode pair is formed Color display with a structure in which a color filter is placed inside the transparent panel substrate that constitutes the observation side panel substrate by bonding to the side panel substrate Color display for display panel manufacturing method, characterized by producing a display panel.   To place a display medium later on the surface of the film substrate on which the transparent pixel electrode is formed, using a colorless transparent film on which the transparent pixel electrode constituting one of the counter electrode pairs is formed as a base material A partition wall for forming the cell is formed, a color filter is formed on the surface on which the electrode is not formed, and a color filter film with the partition wall is produced, and a transparent adhesive is formed on the color filter of the color filter film with the partition wall A color filter substrate produced by arranging and adhering to a transparent panel substrate is used as an observation side panel substrate, and after the display medium is arranged in the cell, a back surface on which a pixel electrode constituting the other of the counter electrode pair is formed A color table with a structure in which a color filter is placed inside the transparent panel substrate that constitutes the observation side panel substrate. Color display for display panel manufacturing method, characterized by making use display panel.   Using a colorless transparent film on which a transparent pixel electrode constituting one of the counter electrode pairs is formed as a base material, a display medium is later placed on the surface of the film base on which the transparent pixel electrode is not formed. A partition for forming a cell to be arranged is formed, a color filter is formed on the surface on which the electrode is not formed to produce a color filter film with a partition, and the transparent pixel electrode of the color filter film with a partition is formed. A color filter substrate prepared by placing a transparent adhesive on the transparent panel substrate and using the color filter substrate as an observation-side panel substrate, and forming a display medium in the cell, and then forming the other electrode of the counter electrode pair The color filter is arranged inside the transparent panel substrate that constitutes the observation side panel substrate. Color display for display panel manufacturing method, characterized in that to produce a color display the display panel.   Forming a color filter on the surface of the film substrate on which the transparent pixel electrode is not formed, using a colorless transparent film on which the transparent pixel electrode constituting one of the counter electrode pairs is formed as a base material, On the surface on which the color filter is formed, a partition wall for forming a cell for arranging a display medium later is formed to produce a color filter film with a partition wall, and transparent on the transparent pixel electrode of the color filter film with the partition wall. A color filter substrate prepared by placing an adhesive and adhering to a transparent panel substrate is used as an observation-side panel substrate, and a pixel electrode constituting the other of the counter electrode pair is formed after disposing a display medium in the cell. The color filter is placed inside the transparent panel substrate that constitutes the observation side panel substrate. Color display for display panel manufacturing method, characterized in that to produce a color display the display panel.   As a color filter film with a partition, what used the rib-shaped black light-shielding material or the rib-shaped white light-shielding material in the same layer as a color filter is used, The any one of Claims 1-4 characterized by the above-mentioned. A method for producing a display panel for color display.   A color filter film with a partition in which a rib-like black light-shielding material or a rib-like white light-shielding material is formed in the same layer as the color filter is at least a rib-like black light-shielding material or a rib-like white light-shielding material formed in the same layer as the color filter. The method for producing a display panel for color display according to claim 3 or 4, wherein a partition wall is formed on a part.   The transparent pixel electrode forming one of the counter electrode pairs and the colorless transparent film forming the color filter have a base material thickness in the range of 9 μm to 200 μm, more preferably in the range of 9 μm to 100 μm. The manufacturing method of the display panel for color displays of any one of Claims 1-6.   As an adhesive that bonds the color filter film to the transparent panel substrate, it is a colorless and transparent material such as an acrylic adhesive, methacrylic adhesive, and epoxy adhesive. A method for producing a display panel for color display according to any one of claims 1 to 7, wherein a colorless and transparent adhesive containing both a heat curing initiator and a thermosetting initiator is used.   When the color filter film and the transparent panel substrate are bonded together, an adhesive containing both a photocuring initiator and a thermosetting initiator is used as an adhesive, and the color filter film and the transparent panel are cured by a photocuring initiator. 9. The color filter film and the transparent panel substrate are securely bonded to each other by a curing reaction using a thermosetting initiator using a heat press or a heat roller after positioning and bonding (temporary bonding) to the substrate. A method for producing a display panel for color display as described in 1.   The color display display panel according to any one of claims 1 to 7, wherein a hot-melt, colorless and transparent adhesive is used as an adhesive for bonding the color filter film and the transparent panel substrate. Production method.   After bonding the color filter film and the transparent panel substrate, use a hot melt adhesive, align the color filter film and the transparent panel substrate, and then melt the adhesive using a hot press or heat roller. The method for producing a display panel for color display according to claim 10, wherein the color filter film and the transparent panel substrate are bonded by curing.   The color display display panel according to any one of claims 1 to 11, wherein the color filter is formed by sequentially forming each color filter by any one of a photolithographic method, a flexographic printing method, and an inkjet printing method. Manufacturing method.   A color display panel produced by the method for producing a color display panel according to claim 1.

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