A mask, a display substrate, a manufacturing method thereof, and a display device
A technology for display substrates and manufacturing methods, applied in the fields of instruments, nonlinear optics, optics, etc., can solve the problems affecting the development progress of high-end products, insufficient support, low yield, etc., to avoid poor Mura, improve support, and increase. The effect of a large top size
Active Publication Date: 2022-08-05
BOE TECH GRP CO LTD +1
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Problems solved by technology
The Mura of the product caused by insufficient support of the spacer cannot be resolved if it remains above 5% for a long time
Therefore, high-end products that require high transmittance, high resolution, and refined pixel area often have to switch to small-generation production lines or accept low yields, which seriously affects the development progress of high-end products
Method used
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[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art fall within the protection scope of the present invention.
[0037] Unless otherwise defined, technical or scientific terms used in the present invention should have the ordinary meaning as understood by those of ordinary skill in the art to which the present invention belongs. The terms "first," "second," and similar terms used herein do not denote any order, quantity, or importance, but are merely used to distinguish different c...
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The present invention provides a mask plate, a display substrate, a method for making the same, and a display device. The mask plate, used for manufacturing a columnar spacer on a display substrate, includes a light-shielding layer, and the light-shielding layer includes a light-shielding pattern and a For the plurality of opening patterns surrounded by the shading pattern, in the direction perpendicular to the mask plane, the cross-section of the opening patterns is an inverted trapezoid, and the inverted trapezoid is not a right-angled trapezoid. When the spacer is made by using the mask of the embodiment of the present invention, it can block and absorb the ultraviolet rays of the parallel half-angle on both sides of the opening pattern, so that the difference between the top size and the bottom size of the spacer is reduced, so that the spacer can be placed in the spacer. Under the condition that the size of the bottom of the spacer remains unchanged, the size of the top of the prepared spacer is increased, and the supporting force of the prepared spacer is improved, so that the Mura defect can be effectively avoided.
Description
technical field [0001] The present invention relates to the field of display technology, and in particular, to a mask, a display substrate, a manufacturing method thereof, and a display device. Background technique [0002] The liquid crystal display panel part is mainly composed of an array substrate, a color filter (Color Filter, CF for short) substrate and a liquid crystal between the two. The color filter substrate is also provided with a columnar spacer (Photo Spacer, PS for short), which is used to support the thickness of the liquid crystal cell, so as to maintain the uniformity of the thickness of the liquid crystal between the substrates. [0003] With the development of science and technology, the size requirements for spacers are becoming more and more strict. For example: High pixel Per Inch (High PPI) display devices produced using the equipment and process design standards of the G8.5 generation, high aperture ratio and high-advanced dimension Switch (HADS) te...
Claims
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IPC IPC(8): G02F1/1339
CPCG02F1/13394G02F1/13396
Inventor 杜宏伟李圭铉陈都
Owner BOE TECH GRP CO LTD