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Preparation method of coa type array substrate

A technology of array substrates and substrate substrates, which is applied in the fields of instruments, nonlinear optics, optics, etc., can solve the problem of inaccurate alignment of the black matrix, and achieve the effect of solving inaccurate alignment and increasing transmittance

Active Publication Date: 2020-05-19
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the shortcomings of the existing technology, the present invention provides a method for preparing a COA array substrate, which solves the problem that the black matrix cannot be accurately aligned in the COA technology

Method used

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  • Preparation method of coa type array substrate
  • Preparation method of coa type array substrate
  • Preparation method of coa type array substrate

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings. Examples of these preferred embodiments are illustrated in the accompanying drawings. The embodiments of the invention shown in and described with reference to the drawings are merely exemplary, and the invention is not limited to these embodiments.

[0031] Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the drawings, and the related Other details are not relevant to the invention.

[0032] This embodiment provides a method for preparing a COA-type array substrate, which includes the steps of:

[0033] (1), refer to figure 1 , a base substrate 1...

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Abstract

The invention discloses a preparation method of a COA substrate. The preparation method of the COA substrate comprises providing a substrate which is provided with an alignment mark; preparing a color filter layer on the substrate, specifically, after performing accurate alignment through the alignment mark, preparing a first color photoresistance unit, a second color photoresistance unit and a third photoresistance unit, and during preparation of the first color photoresistance unit, preparing first color photoresistance materials into a baffle around the alignment mark and a separating layer onto the alignment mark; applying a black photoresistance material layer onto the color filter layer; after performing accurate alignment through the alignment mark, performing exposure and development on the black photoresistance material layer to form a black matrix. By means of the baffle and the separating layer, which reduce the thickness of the black photoresistance material layer covering the alignment mark, the preparation method of the COA substrate solves the problem of accurate alignment failure of the black matrix in the COA technology.

Description

technical field [0001] The invention relates to the technical field of displays, in particular to a method for preparing a COA array substrate. Background technique [0002] A liquid crystal display (Liquid Crystal Display, LCD) has many advantages such as a thin body, power saving, and no radiation, and has been widely used. Such as: LCD TV, mobile phone, personal digital assistant (PDA), digital camera, computer screen or laptop screen, etc. [0003] A liquid crystal display device is usually a liquid crystal display panel and a backlight module. Among them, the structure of the liquid crystal display panel is mainly composed of a thin film transistor array (Thin Film Transistor Array, TFT Array) substrate, a color filter (Color Filter, CF) substrate, and a liquid crystal layer (Liquid Crystal) disposed between the two substrates. Layer), its working principle is to control the rotation of liquid crystal molecules in the liquid crystal layer by applying a driving voltage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1335G02F1/1362
CPCG02F1/133512G02F1/133516G02F1/136209G02F1/136222
Inventor 廖辉华
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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