JPH0762745B2 - Electrode substrate for multicolor electro-optical display device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an electrode substrate for a multicolor electro-optical display device.

[Conventional technology]

The multicolor liquid crystal display device is used for various displays of televisions, computer terminals, monitors for video cameras, in-vehicle displays and the like.

An example of this multi-color liquid crystal display device will be described with reference to FIG. 2. A pair of transparent substrates (1) made of transparent glass or the like are arranged in parallel and opposite to each other, and a plurality of transparent electrodes in stripes are formed on both transparent substrates (1). (2) The transparent electrodes (2) facing each other in the X-axis direction on one transparent substrate (1) and the Y-axis direction on the other transparent substrate (1) are orthogonal to each other. And a color filter (3) of three primary colors of red (R), green (G), and blue (B) is provided on at least one transparent electrode (2), and if necessary, further on it. A liquid crystal alignment layer (not shown) is provided on both transparent substrates (1)
A liquid crystal (4) is filled in between, and an end portion between both transparent substrates (1) is sealed by a sealing resin (not shown).

[Problems to be solved by the invention]

In the above-mentioned conventional multicolor liquid crystal display device, an image composed of dot-shaped three primary color pixels is displayed, and by the additive color mixing by juxtaposed different color pixels, it is recognized as a multicolor image by the eye. Pixels of already mixed colors are displayed,
It is not visible to the eye. If it is possible to display pixels of already mixed colors, it is possible to display a multicolor image closer to a natural color, but it is difficult to form such a display device.

Therefore, a problem to be solved by the present invention is a multicolor electro-optical display device capable of displaying a multicolor image closer to a natural color without significantly changing the mechanism of the current multicolor liquid crystal display device. To provide an electrode substrate for use.

[Means for solving problems]

As a result of research to solve the above problems, the present inventor provides a layer having a cross-sectional shape of a micro-convex lens having a diameter extending over the three colored pixels of three primary colors arranged in parallel on the three colored pixels of three primary colors arranged in parallel. As a result, they have found that it is possible to display a multicolor image closer to natural color, and the present invention has been completed based on such knowledge.

The electrode substrate for a multicolor electro-optical display device of the present invention is provided with a color filter by arranging a plurality of three primary color pixels on a glass substrate, and a micrometer having a diameter extending over three color pixels of three primary colors arranged in parallel on the color filter. A layer having a cross-sectional shape of a convex lens is provided.

FIG. 1 shows a multicolor liquid crystal display device formed using the electrode substrate for a multicolor electro-optical display device of the present invention. As shown in FIG. 1, a transparent electrode (2) having a predetermined shape formed on one transparent substrate (1) made of glass or the like is colored in three colors by dyeing, vapor deposition, electrodeposition, printing or the like. A color filter (3) composed of pixels is formed, and an acrylic resin, urethane resin, silicone resin, epoxy resin, polyimide,
A transparent resin such as PVA, gelatin, and casein forms a layer (6) having a cross-sectional shape of a micro-convex lens having a diameter that extends over the three colored pixels of the three primary colors of the color filter.

Liquid crystal (4) is filled between both transparent electrodes (2). Further, the end portion between both transparent base materials (1) is sealed with a sealing resin (not shown).

Thus, in the present invention, as a color filter, an organic dye is dyed with casein, gelatin or the like, a dyeing filter, a pigment vapor deposition filter in which an organic pigment is vacuum-deposited and patterned into a predetermined shape, and a printing filter in which colored inks are sequentially formed by offset printing or the like. Can be applied.

Next, in the present invention, as the micro-convex lens layer, the support is composed of a screen made of stainless fiber or polymer fiber, and the stencil is made of a resin or a metal thin plate. What is formed by the stencil printing method can be applied using the formed stencil printing screen plate.

Alternatively, an etching method is applied to a metal plate or a glass plate to form a concave portion, and the transparent resin filled here is transferred onto a color filter so as to straddle three colored pixels of three primary colors. You can

[Work]

The cross-sectional layer of the micro-convex lens has a function of mixing three colored pixels of three primary colors arranged in parallel under a state where an electric field is applied between electrodes and a display is performed.
The mixed color light passes through the oriented liquid crystal layer and further reaches the viewer's eyes through the polarizing layer, and a multicolor image is visually recognized.

〔Example〕

ITO was deposited on a 1.1 mmt glass substrate to a film thickness of 1000 Å and patterned into a predetermined shape to form a transparent electrode.

Next, a photosensitive resin solution containing 10% (weight ratio) of ammonium dichromate in 10% (weight ratio) PVA aqueous solution (polymerization degree 2000) is prepared. On the other hand, using finely divided pigments, the azo lake pigment for red, the phthalocyanine green pigment for green, and the phthalocyanine blue pigment for blue are mixed with the photosensitive resin solution at a ratio of 1: 3 (weight ratio), respectively. A sexual solution was prepared.

This photosensitive solution was applied and exposed to light to form a filter for the first color. The second color by the same process,
A third color filter was formed to form a three primary color filter.

Next, a stencil screen was made by adhering a nickel stencil of 10umt made by electroforming to a 300 mesh, 45 ° bias stainless screen by a plating method to make a stencil printing screen plate. By printing at a predetermined position, a layer having a cross-sectional shape of a micro convex lens was formed.

Next, alignment treatment was performed, and after alignment and sealing with the counter electrode, liquid crystal was injected to prepare a multicolor liquid crystal display device.

The multicolor liquid crystal display device formed using the electrode substrate of the present invention had excellent characteristics in color tone.

〔The invention's effect〕

As described in detail above, according to the electrode substrate of the present invention, a multi-color electro-optical display device capable of displaying a multi-color image closer to a natural color than the conventional one can be formed without significantly changing the display mechanism. be able to.

[Brief description of drawings]

FIG. 1 is a sectional view of a multicolor liquid crystal display device using the electrode substrate of the present invention, and FIG. 2 is a sectional view of a conventional multicolor liquid crystal display device. 1 ... Transparent substrate 2 ... Transparent electrode 3 ... Color filter 4 ... Liquid crystal 5 ... Polarizing plate 6 ... Layer of cross-sectional shape of transparent micro convex lens

Claims (1)

[Claims] 1. A micro-convex lens made of a transparent resin having a diameter extending over three colored pixels of three primary colors arranged on a glass substrate by arranging a plurality of colored pixels of three primary colors on a glass substrate. An electrode substrate for a multicolor electro-optical display device, characterized in that a layer having a cross-sectional shape is provided.