JPH05216048A - Liquid crystal electrooptical device and production thereof - Google Patents

Abstract

PURPOSE:To improve the display quality and the display performance by disposing spacers for controlling the thickness of a liquid crystal layer only between the patterns of transparent electrodes. CONSTITUTION:The transparent electrodes 9 consisting of ITO, etc., are formed of glass or plastic, etc., 8. A black resist 11 dispersed with the spacers 10 consisting of glass fibers, resin balls, etc., is formed only between the patterns of the transparent electrodes on the transparent electrode side. An insulating film 13 essentially consisting of SiO2, etc., and an oriented film 14 consisting of polyimide, etc., are formed in the upper part thereof, by which one substrate is constituted. The substrate and another substrate having the transparent electrodes 16 and the oriented film 17 on glass or plastic 15 are disposed to face each other and a liquid crystal 18 is packed into the space between those, the substrates are then stuck to each other by a sealing material 19. As a result, the spacers are disposed only between the patterns of the transparent electrodes and the leakage of light from the spacers in the part contributing to display is obviated and the light shielding property particularly in a black state is improved. The good contrast and the uniform thickness of the liquid crystal layer are thus obtd.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing any liquid crystal display device such as a liquid crystal television, a display device of a personal computer, a display panel of a video display measuring instrument, a game machine, and the like, and more particularly, a liquid crystal layer thickness control The present invention relates to a method for manufacturing a black and white and color liquid crystal display device in which spacers are arranged only between patterns of transparent electrodes to improve display quality and display performance.

[0002]

2. Description of the Related Art FIG. 3 shows an example of a structural sectional view of a conventional monochrome liquid crystal display device. Conventionally, as shown in FIG. 3, ITO
S or glass or plastic 2 with transparent electrode 1
A pair of substrates, each of which has an insulating film 3 containing iO ₂ as a main component and an alignment film 4 such as polyimide laminated by a printing method, face each other,
It is pasted with the sealing material 5. In the case of color display, it is necessary to provide a color filter layer in addition to the insulating film and the alignment film. A liquid crystal 6 is enclosed between the substrates, and a spacer 7 such as a glass fiber or a resin sphere is provided to control the thickness between the substrates to be a uniform layer thickness. The spacer 7 is arranged by the spraying method, and is arranged on the transparent electrode regardless of the pattern of the transparent electrode. Thus, the conventional liquid crystal display device is configured.

[0003]

In the conventional method of manufacturing a monochrome liquid crystal display device and a color liquid crystal display device described with reference to FIG. 3, spacers for controlling the liquid crystal layer thickness are randomly arranged on the transparent electrodes and between the patterns of the transparent electrodes. ing. When the spacers are arranged in this way, they affect the white and black states during driving, and especially in the black state, light leaks from the spacers on the electrodes, resulting in a decrease in the light blocking rate in the black state. However, there is a problem in that the contrast ratio is reduced. Therefore, an object of the present invention is to dispose spacers only between patterns of transparent electrodes and not dispose spacers on pixel electrodes in order to solve such a conventional problem.

[0004]

In order to solve the above-mentioned problems, the present invention randomly arranges spacers arranged in order to obtain a uniform liquid crystal layer thickness on a conventional transparent electrode regardless of the pattern of the transparent electrodes. Instead of arranging, the spacers can be arranged only between the patterns of the transparent electrodes.

[0005]

In the black-and-white and color liquid crystal display devices configured as described above, the liquid crystal layer thickness control spacers are arranged only between the patterns of the transparent electrodes and not on the transparent electrodes, and therefore, when driving, the original It is possible to display without impairing the transmittance characteristics in the white and black states.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIGS. 2 (a) to 2 (e) are sectional views showing steps of a method of manufacturing a liquid crystal display device according to the present invention, and FIG. 1 is a sectional view of the liquid crystal display device according to the present invention. In FIG. 2A, reference numeral 8 is glass or plastic, etc., on which a transparent electrode 9 made of ITO or the like is formed. A black resist 11 in which spacers 10 such as glass fibers and resin balls are dispersed is applied to the transparent electrode side by a spinner as shown in FIG. 2B. After coating, the exposure mask 12 is applied onto the transparent electrodes as shown in FIG. 2C, and light is irradiated only between the patterns of the transparent electrodes, so that spacers are provided only between the patterns of the transparent electrodes as shown in FIG. 2D. A mixed light-shielding film is formed. On top of this, as shown in FIG. 2 (e), an insulating film 1 containing SiO ₂ or the like as a main component is formed.
3, an alignment film 14 made of polyimide or the like is formed to constitute one of the substrates. This substrate and another substrate having the transparent electrode 16 and the alignment film 17 on another glass or plastic 15 are opposed to each other, and liquid crystal 18 is sealed in the gap, and the sealing material 1
The liquid crystal display device according to the present invention is constructed by laminating at 9. The liquid crystal display device configured in this manner suppressed light leakage in the black state and obtained a good contrast ratio as compared with the conventional method. Also, the liquid crystal layer thickness was as uniform as the conventional method. (Example 2) Spacers such as glass fibers and resin spheres are sprinkled on glass or plastic having a transparent electrode, and then a black resist is applied thereon. Hereinafter, the same steps as in Example 1 are performed to form a liquid crystal display device.
Also in the liquid crystal display device configured as described above, the first embodiment
Similarly to the conventional method, light leakage in the black state is suppressed,
A good contrast ratio and a uniform liquid crystal layer thickness were obtained.

[0007]

As described in detail in the above embodiments, in the liquid crystal display device according to the present invention, spacers for uniformizing the liquid crystal layer thickness are randomly arranged on the conventional transparent electrodes and between the patterns of the transparent electrodes. Since the spacer is arranged only between the transparent electrode patterns and the light leakage from the spacer in the display contributing portion is eliminated in the above structure, the light-shielding property especially in the black state during driving is improved, which is good. Since a high contrast ratio and a uniform liquid crystal layer thickness can be obtained, a high quality and high performance liquid crystal display device can be provided.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a liquid crystal display device according to the present invention.

FIG. 2 is a cross-sectional view of a manufacturing process of a liquid crystal display device according to the present invention.

FIG. 3 is a cross-sectional view of a conventional liquid crystal display device.

[Explanation of symbols]

 1, 9, 16 Transparent electrode 2, 8, 15 Glass or plastic 3, 13 Insulating film 4, 14, 17 Alignment film 5, 19 Sealing material 6, 18 Liquid crystal 7, 10 Spacer 11 Black resist 12 Exposure mask

Claims (2)

[Claims] 1. A liquid crystal electro-optical device in which a pair of substrates each having a plurality of electrodes separated from each other are formed on at least one of the substrates with a spacer interposed therebetween and liquid crystal is sealed in a gap between the substrates. The liquid crystal electro-optical device, wherein the spacer is arranged on a portion of the one substrate where a plurality of electrodes is not formed. 2. A liquid crystal electro-optical device in which a pair of substrates each having a plurality of electrodes separated from each other are formed on at least one of the substrates with a spacer interposed therebetween and liquid crystal is sealed in a gap between the substrates. In the manufacturing method, a step of forming a plurality of electrodes separated from each other on a substrate, a step of applying a photosensitive resin and a spacer on the substrate, irradiating the substrate with light, and exposing the plurality of electrodes on the substrate. A method for manufacturing a liquid crystal electro-optical device, comprising: a step of selectively removing a resin and spacers; and a step of bonding the substrate and the other substrate together and sealing a liquid crystal in the gap between the substrates.