Liquid crystal display and its substrate structure

A liquid crystal display and substrate technology, applied in instruments, optics, nonlinear optics, etc., can solve problems such as uneven diffusion of PI liquid, and achieve the effect of avoiding uneven diffusion of PI liquid and improving product yield and competitiveness.
CN108983475BActive Publication Date: 2021-10-29TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
Publication Date
2021-10-29

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Abstract

The present invention provides a liquid crystal display and its substrate structure. The substrate structure includes a substrate and a color-resist layer. The color-resist layer includes a first color-resist structure and a second color-resist structure. The second color-resist structure is arranged around the first color-resist structure and Set apart from the first color-resisting structure, the color-resisting layer further includes at least one first step portion protruding from the sidewall of the first color-resisting structure, the first step portion includes The first stepped surface extended from the structure and the second stepped surface substantially extended from the first stepped surface, the distance from the first stepped surface of at least one first stepped portion to the substrate is along the direction close to the second color resist structure In descending order, the PI liquid on the first color-resisting structure is guided to between the first color-resisting structure and the second color-resisting structure through at least one first step, reducing the backflow of the PI liquid when it is blocked by the second color-resisting structure Speed, so as to avoid the phenomenon that the PI liquid is backflowed and accumulated on the surface of the first color-resisting structure, which causes uneven diffusion of the PI liquid at the edge of the display area.
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Description

technical field

[0001] The invention relates to the technical field of preparation technology of liquid crystal displays, in particular to a liquid crystal display and its substrate structure. Background technique

[0002] The alignment film printing process is a very important production process in the production process of liquid crystal displays. The alignment film layer is used on liquid crystal displays because of its unique insulating properties and alignment characteristics. At present, the alignment film printing process is generally divided into There are two types, one is the roller coating method. The advantage of this method is that it can better control the diffusivity of the alignment liquid, that is, the PI (Polyimide, polyimide) liquid, and the thickness uniformity and Coating accuracy is relatively easy to control, but when making large-size panels, the uniformity of the thickness of the patterned film layer after coating cannot be well managed due to the la...

Claims

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