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Alignment coating structure and method for substrate

A coating method and substrate technology, which can be applied to devices, coatings, and instruments for coating liquid on the surface, can solve the problems of color shift and Newton's ring rainbow pattern, increase the disorder of liquid crystal arrangement, and avoid Newton's rings and Newton's rings. rainbow effect

Active Publication Date: 2019-07-30
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, after alignment coating of polyimide liquid, the arrangement of liquid crystals in the blind holes is relatively regular, so that the display effect of the camera through the glass panel will be insufficient, for example, color shift and Newton Ring rainbow pattern and other problems

Method used

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  • Alignment coating structure and method for substrate
  • Alignment coating structure and method for substrate

Examples

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Embodiment 1

[0030] Such as image 3 As shown, the substrate alignment coating structure of the present invention includes a substrate 1 , an alignment plate 2 a and a printing mechanism 3 .

[0031] Such as figure 1 As shown, the substrate 1 includes at least one of an array substrate and a color filter substrate. The substrate 1 has a blind hole 11 through which the camera under the screen can transmit light. In this embodiment, a substrate 1 is taken as an example, such as an array substrate or a color filter substrate, to describe the alignment coating structure of the substrate of the present invention. The blind hole 11 on the array substrate or the color filter substrate is a circular hole, and its radius is set to R.

[0032] Such as figure 2 As shown, the alignment plate 2a has an opening 21a; before printing and coating polyimide liquid, the alignment plate 2a covers the substrate 1, and the opening 21a corresponds to the blind hole 11. In this embodiment, the opening 21a ...

Embodiment 2

[0041] Such as Figure 4As shown, the difference between embodiment 2 and embodiment 1 is that in embodiment 2, the problem of deformation of the alignment plate 2b during the printing process needs to be considered, so it needs to be considered during design, so in the printing direction, The radius of the opening 21b needs to deduct the amount of deformation of about 0-2000um, that is, when designing, the opening 21b is an elliptical hole, the direction of the short radius of the elliptical hole is parallel to the printing direction, and the direction of the short radius of the elliptical hole is The direction of the major radius is perpendicular to the printing direction. The long radius of the elliptical hole is R±5000um, and the short radius of the elliptical hole is 0-2000um smaller than the long radius of the elliptical hole.

[0042] In order to clearly explain the present invention, this embodiment also provides an alignment coating method for a substrate, which spec...

Embodiment 3

[0048] Such as Figure 5 As shown, the difference between embodiment 3 and embodiment 1 is that embodiment 3 provides a plurality of substrates 1 arranged in an array, and the alignment plate 2c has the same number of printing units 201 as the number of substrates 1 , each printing unit 201 has an opening 21 c , each printing unit 201 corresponds to a substrate 1 , and the opening 21 c on each printing unit 201 corresponds to the blind hole 11 on the substrate 1 . The design of the blind hole 11 may refer to the design of Embodiment 2 or the design of Embodiment 1, which will not be repeated here.

[0049] In order to clearly explain the present invention, this embodiment also provides an alignment coating method for a substrate, which specifically includes the following steps: For each component or device, see figure 1 , Figure 5 shown.

[0050] A plurality of substrates 1 and an alignment plate 2c are provided, each substrate 1 has a blind hole 11, and the alignment plat...

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Abstract

The invention discloses an alignment coating structure and method for a substrate. The alignment coating structure for the substrate comprises at least one substrate, an alignment plate and a printingmechanism, wherein each substrate is provided with a blind hole; the alignment plate is provided with at least one opening; the alignment plate correspondingly coats the substrate, and the opening corresponds to the blind hole; the printing mechanism is used for transferring polyimide liquid on the alignment plate to a region outside the blind hole in the substrate according to a preset printingdirection. According to the alignment coating structure and method for the substrate, the opening directly faces the blind hole during alignment coating, so that the polyimide liquid at the blind holein the substrate cannot be printed and then the liquid crystal arrangement turbulence degree of the blind hole position is increased, and thus the light path is scattered to a certain degree and thenthe generation of newton rings and rainbow lines is avoided.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an alignment coating structure and method for a substrate. Background technique [0002] With the popularity of "full-screen" mobile phone designs, increasing the screen-to-body ratio is the general trend. In order to increase the screen-to-body ratio, a variety of design structures have appeared on the market, from the initial "notch screen" to the "beauty tip / water drop screen", and then to the later through-hole under-screen camera design. [0003] While increasing the screen-to-body ratio, at the same time, we are facing the pressure of cost. Only by making as few holes as possible can we effectively control the cost. This is also the origin of the blind hole screen design. This structure is to reduce the production by canceling the glass panel punching. cost. [0004] Liquid crystal display panels usually coat polyimide (PI, Polyimide) liquid on the thin film transistor s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1337G02F1/13
CPCG02F1/133723G02F1/1303G02F1/133711C09K2323/027B05D1/286B05D2505/50B05D1/28
Inventor 马贵智李永凯
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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