Display Panel Color Resist Layer Openings for Photo Spacer Height Precision
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Solution Overview
Problem
Conventional color resist layers with greater thickness in color filter on array (COA) technology lead to significant deviations in the height of photo spacers, affecting the introduction of liquid crystal and reducing the accuracy of their arrangement.
Innovation Solution
A display panel design featuring a color resist layer with openings that penetrate through it, allowing for reduced thickness and improved compression rate accuracy of photo spacers, which are strategically positioned between substrates to enhance the arrangement of photo spacers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the color resist layer has a greater thickness, then the structural stability is improved, but the manufacturing precision of photo spacer height is deteriorated
Solution Approach 1:
The color resist layer is segmented by forming openings (through-holes or partial holes) that divide the continuous layer into separate regions. This segmentation allows the photo spacer to be positioned in specific areas with controlled thickness, improving height precision while maintaining structural stability in other regions.
Solution Approach 2:
The color resist layer is designed with non-uniform thickness by creating openings in specific locations. The thickness is locally reduced at the opening positions where photo spacers are formed, while other areas maintain greater thickness for structural stability. This local variation in quality enables precise photo spacer height control without compromising overall structural integrity.
2Manufacturing precision
If the color resist layer thickness is reduced, then the manufacturing precision of photo spacer height is improved, but the structural stability is deteriorated
Solution Approach 1:
The color resist layer is segmented by forming openings (through-holes or partial holes) that divide the continuous layer into separate regions. This segmentation allows the photo spacer to be positioned in specific areas with controlled thickness, improving height precision while maintaining structural stability in other regions.
Solution Approach 2:
The color resist layer is designed with non-uniform thickness by creating openings in specific locations. The thickness is locally reduced at the opening positions where photo spacers are formed, while other areas maintain greater thickness for structural stability. This local variation in quality enables precise photo spacer height control without compromising overall structural integrity.
Data Source
AI summary
A display panel and a display device are provided. The display panel includes: a first substrate including: a TFT layer; and a color resist layer located on the TFT layer; the color resist layer is provided with an opening that at least partly penetrates the color resist layer; a second substrate located above the first substrate; and a photo spacer located between the first substrate and the second substrate, wherein an end of the photo spacer away from the second substrate is located in the opening.