Novel liquid crystal display screen of black matrix structure and preparation method thereof

Abstract

The invention discloses a novel liquid crystal display screen of a black matrix structure. The novel liquid crystal display screen comprises two glass substrates. The inner surfaces of the two glass substrates are each provided with a layer of black mask. The two black masks on the two glass substrates are each provided with an ITO conductive layer. The ITO conductive layers are indium tin oxide electrodes used for displaying pixel patterns and wrap the black masks. A liquid crystal layer is arranged between the two ITO conductive layers. The upper end face and the lower end face of the liquid crystal layer are provided with matched alignment films. The upper end face of the upper glass substrate and the lower end face of the lower glass substrate are provided with an upper polaroid and a lower polaroid respectively. According to the liquid display screen, the problem that a short circuit is likely to be caused between two ITO electrodes is solved, transmission of light at the non-display pixel position, namely the gap between the ITO electrodes is blocked, the light transmittance of a non-display pixel is lowered, the contrast ratio of a display pixel to the non-display pixel is improved, the visual angle of the liquid crystal display screen is increased, the production yield is high, and the service life is long. The invention further discloses a preparation method of the liquid crystal display screen.

Description

technical field [0001] The invention relates to the field of liquid crystal displays, in particular to a novel liquid crystal display with a black matrix structure and a preparation method thereof. Background technique [0002] In the prior art, the liquid crystal display includes two modes: a normally black mode and a normally white mode. For a normally black LCD display, during the display process, because the liquid crystal molecules are arranged obliquely in the liquid crystal cell, when viewed from different directions, there will be a problem of gray scale inversion, which will cause the non-selected pixels to not be completely dark In the state, non-selected pixels can also have some light through, which will affect the display contrast of the LCD screen, especially when the outdoor ambient light is strong, the contrast will be lower. In order to solve the above-mentioned problems of gray scale inversion and affecting contrast, the commonly used method is to reduce t...

AI Technical Summary

Problems solved by technology

[0004] as attached figure 1 As shown, but in the process of the above technical solution, due to the limitations of the manufacturing process and equipment, the black material (black matrix) is unevenly coated and the black material is slightly left. Carbonization occurs at high temperature during baking, and the black material Carbonization will form protrusions or burrs 4 on the indium tin oxide electrodes, and the indium tin oxide electrodes 2 on the inner surfaces of the upper and lower substrate glasses 1 are in contact with each other due to the protrusions or burrs 4, and are electrically conductive, so that the upper and lower substrate glasses 1. The indium dioxide electrode 2 on the inner surface is short-circuited, resulting in a large number of defective LCD screens during the production and preparation process, and the reliability of the product cannot be guaranteed; The electrodes of indium tin dioxide 2 on the inner surface of the glass 1 of the two substrates are short-circuited, resulting in defective products at the user end

[0005] Therefore, how to solve the above-mentioned problems of burrs and easy short circuits between the two indium tin oxide electrodes, and at the same time ensure that the transmission of light from the gap between the indium tin oxide electrodes at the non-display pixels can be blocked, and the light transmittance of the non-display pixels can be reduced. Improving the contrast between display pixels and non-display pixels and increasing the viewing angle of the liquid crystal display is the focus of the applicant's research and the industry's hope

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