JPS62153937A - Electrode substrate with color filter - Google Patents

Abstract

PURPOSE:To make multi-color image display with a low operating voltage by providing a color filter layer consisting of conductive powder, dye and resin on display electrodes for an electrode substrate. CONSTITUTION:The electrode substrate with the color filter is provided with the display electrodes 12 on a transparent substrate 11 and the color filter layer 13 on the display electrodes. The color filter layer 13 is formed by coating a soln. which is prepd. by mixing a soln. contg. the pigment and transparent conductive powder prepd. by dispersing the pigment and transparent conductive powder into an aq. soln. added with a nonionic surface active agent and a photosensitive resin soln. and has photosensitivity and conductivity on the electrode substrate provided with the display electrodes then bringing a mask into tight contact with the surface of the coated film of the soln. having the photosensitivity and conductivity, and exposing and developing the coated film. Since the color filter layer has conductivity in the above-mentioned manner, a multi- color electrooptic display device of the low driving voltage is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a color filter-equipped electrode substrate. The present invention relates to an electrode substrate with a color filter for a multicolor optical display device, which is opposed to each other at a distance of 8, and in which an electro-optic material such as two liquid crystals is sandwiched between both electrode ridge surfaces.

[Conventional technology]

Multicolor electro-optic display devices are used in televisions, various displays for computer terminals, video monitors, in-vehicle displays, and the like.

An example of this multicolor electro-optic display! @1 To explain with Figure 1, substrates (1) made of transparent glass or the like face each other in parallel,
A transparent display cell having a predetermined shape is formed on the substrate (1). A multicolor electro-optic display device is fabricated by arranging polarized light h ta+ on both sides or one side of this multicolor electro-optic display cell and irradiating it with light from a light source (7).

[Problem that the invention seeks to solve]

However, in the multicolor electro-optic display cell constituting the above-mentioned conventional multicolor electro-optic display device, a color filter layer (3) made of an insulating material is provided on the display electrode (2).
The disadvantage is that the operating voltage required to orient the liquid crystal to form a liquid crystal is high.

Accordingly, the problem to be solved by the present invention is to provide a method for manufacturing an electromagnetic substrate with a color filter, which makes it possible to display a multicolor image at a low operating voltage.

As a result, it has been discovered that it is possible to create a multicolor electro-optical display device that can have a color gradient made of materials consisting of conductive powder, pigment, and resin on the display electrode of the electrode substrate, and based on this knowledge, the present invention has been developed. It is completed.

The color filter-equipped electrode substrate of the present invention is a color filter-equipped electrode substrate for a multicolor electro-optical display device in which a display electrode is provided on a transparent substrate and a color filter layer is provided on the display electrode. The filter layer is made of a material layer made of conductive powder, pigment, and resin.

FIG. 1 shows a color filter attachment base according to the present invention.

8 in the figure, aυ is a transparent substrate, C10 is a *pole for display, (
) is a color filter.

Ru.

Next, the color filter layer (to) is composed of Ji [antimony doped]), the same W-1 (titanium oxide-tin oxide (antimony oxide doped)), and the same W-10 (titanium oxide-tin oxide (antimony oxide doped)).
Tin oxide (antimony oxide doped), etc. can be applied.

Next, in the present invention, as a color filter layer, a solution containing a pigment and a transparent four-electroconductive powder, which is obtained by dispersing a pigment and a transparent conductive powder in an aqueous solution containing a nonionic thread surfactant, and a photosensitive resin are used. A photosensitive and conductive solution obtained by mixing the photosensitive and conductive solution is spread on a transparent substrate provided with display * electrodes, and then a mask is closely placed on the coating film of the photosensitive and conductive solution. It can be applied by exposing it to light and then developing it.

Further, the color filter ma3 may be formed by printing by an offset printing method using an ink obtained by removing pigments and transparent heat conduction, removing the solvent, and then curing with ultraviolet rays.

〔Example〕

Example 1 A transparent electrode was produced by forming a film of ITO to a thickness of 100 OA on a glass substrate and then badering it into a predetermined shape. Next, a photosensitive resin solution is prepared by adding 10 parts (weight ratio) of ammonium chromate to a PTA aqueous solution (polymerization If 2000 ) with a weight ratio of 10 parts (weight ratio). On the other hand, using finely powdered pigments, the red color is an azo lake red pigment, the green color is a phthalocyanine thread pigment, the blue color is a phthalocyanine pigment, and the transparent Doki Powder T-i manufactured by Mitsubishi Metals is mixed with each color pigment at a ratio of 1:1. Mix evenly (1 ratio). Next, 1 qb (quantity ratio) of Dai-Kogyo Rakutaki Epan 74, a non-ionic thread surfactant, was added to an aqueous solution containing 11 c! 5. Powder mixed with pigment and transparent conductive powder
After dispersing at 0% (accurate weight ratio) and stirring thoroughly, 15000r
Centrifuged at pm. Furthermore, the supernatant liquid was diluted with a pore size of 0.
It was filtered with a 22 μm membrane filter.

Next, the photosensitive resin solution and a solution consisting of a pigment, a transparent conductive powder, and a surfactant are mixed at a ratio of 3:1 (*quantity ratio),
Solutions with photosensitivity and JJ conductivity for each color were prepared.

This photosensitive and conductive solution was subjected to transparent exposure as described above, and then developed to form a single layer of a filter of the first color.

6. Next, a second color filter and a sixth color filter layer were formed by the same process to produce an uninvented optical filter.

The optical filter thus obtained has a film thickness of 1 μm.
The peak transmittance of each color is 60-70, which is 500Ω.
Because of its high conductivity, it was possible to display multicolor images without increasing the driving voltage of the liquid crystal compared to conventional methods.

Example 2 The same pigment and transparent conductive powder as in Example 1 were dispersed at a concentration of 50% in toluene containing one part of Epan 72 manufactured by Daiichi Kogyo Pharmaceutical Co., Ltd., and stirred. Mix V-5502 manufactured by Ink Kagaku ■ at a ratio of 2:1 (Ekihi),
The mixture was heated under reduced pressure to remove toluene and turned into ink. This ink was printed in a bright room using an offset printing method and cured with ultraviolet light to produce an optical filter of the present invention.

By removing crystals, it was possible to obtain sufficient characteristics and quality for a multicolor IjII image display device.

Example 6 200+5uX200+Ilso! --y (mu7o-)
Ta. Next, a water-soluble photosensitive solution consisting of gelatin and ammonium chloride is prepared. To this, 50% of Mitsubishi Metals [41kl's Transparent Surfactant T-1] was added to the water-soluble photosensitive solution, and the nonionic surfactant Evan 74 (manufactured by Daiichi Kogyo Co., Ltd.) was added.
After adding Ijlit% of and thoroughly dispersing by stirring,
Centrifugation was performed at 15,000 rpm. Furthermore, this supernatant liquid was filtered through a membrane filter with a pore size of 0.22 μm.
A photosensitive and conductive solution was prepared by pressure filtration.

This photosensitive and 2!44 solution was spread on the front 8-pibo bright electrode base, and after drying, a mask was placed on the photosensitive and conductive solution and exposed to light. Then, visual imaging was carried out and dyed in a red dye bath, and then immersed in a 10% tartaric solution of 50"C, 10% tannin water, and 50"C, and the filter of the first color (red) was layered. Next, the second color (green) and the sixth color were formed using the same process.
The dyeing baths for each color from which the optical filter of the present invention was obtained by forming the filter IIS with a certain color (positive) were as follows.

Red dye bath (dehumidified to 60') Green dye bath (liquid temperature 60'C) Blue dye bath (liquid temperature 60'C) The optical filter thus obtained has an aU* of 1μ
m, the peak transmittance of each color is 70-80%, and 100
Because it has a conductivity of Ω/Ω, it can be used in multiple colors without increasing the driving voltage of the liquid crystal compared to conventional methods. If the image is displayed.

〔Effect of the invention〕

As detailed above, since the color filter layer of the electrode substrate with color filter of the present invention has tetraelectricity, the polar ridge of the color filter can be used for a multicolor optical display device with a lower driving voltage than the conventional one. It is possible to form a monkey.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a color filter-equipped cage electrode substrate of the present invention, and FIG. 2 is a sectional view of a conventional multicolor electro-optical display device. OIl・・・・・・・・・・・・・・・Transparent substrate (company)・・・・・・・・・・・・・・・Display electrode 03・・・・・・・・・・・・・・・・・・Color filter layer patent applicant Dainippon Printing Co., Ltd. Agent Patent attorney Ko Nishi Group t, chair 13 ・ Calaf planting row Figure 2 Ω-7

Claims (1)

[Claims] In an electrode substrate with a color filter for a multicolor electro-optical display device, in which a display electrode is provided on a transparent substrate and a color filter layer is provided on the display electrode, the color filter layer is made of conductive powder, pigment, or dye. An electrode substrate with a color filter, comprising a material layer made of , and a resin.