Segmented Sealant Frame for Uniform Liquid Crystal Gaps
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Solution Overview
Problem
In VR products with high PPI display, the dual-screen design results in poor uniformity of the liquid crystal gap between the upper and lower screens due to the interaction of liquid crystal molecules with atmospheric pressure, leading to optical defects and poor brightness uniformity.
Innovation Solution
A display panel design that incorporates a second sealant on the inner side of the first sealant to divide the sealant frame into multiple areas, forming independent accommodating spaces filled with liquid crystal, which isolates the interaction of liquid crystal molecules and stabilizes the liquid crystal gap under atmospheric pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a dual-screen design with a single display panel is adopted to enhance edge efficiency, then productivity is improved, but the uniformity of the liquid crystal gap deteriorates due to poor design uniformity of the truncated cone-shaped support body
Solution Approach 1:
The patent divides the sealant frame into multiple independent sealant frame areas using second sealants, which in turn divides the liquid crystal layer into multiple independent accommodating spaces. This segmentation prevents liquid crystal molecules from flowing between different screen areas, ensuring uniform liquid crystal gap in each area while maintaining the dual-screen design for improved edge efficiency.
2Device complexity
If the array substrate and color film substrate are arranged oppositely with atmospheric pressure acting on the liquid crystal, then the device structure is simplified, but liquid crystal molecules gather near the support body causing poor brightness uniformity
Solution Approach 1:
The patent segments the liquid crystal layer into multiple independent accommodating spaces using second sealants. This segmentation isolates liquid crystal molecules in each space, preventing them from gathering near the support body due to atmospheric pressure. As a result, brightness uniformity is improved while maintaining the simple opposite arrangement of substrates.
3Ease of manufacture
If a single sealant frame is used to bond the array substrate and color film substrate, then the manufacturing process is simplified, but the liquid crystal gap uniformity deteriorates in dual-screen designs
Solution Approach 1:
The patent introduces second sealants that divide the single sealant frame into multiple sealant frame areas, creating independent accommodating spaces for liquid crystal. This segmented approach maintains ease of manufacture through a straightforward coating process while ensuring consistent liquid crystal gap across different screen areas by preventing liquid crystal flow between regions.
Data Source
AI summary
The present disclosure relates to a display panel and a manufacturing method therefor, and a display device. The display panel includes an array substrate and a color filter substrate, which are aligned for forming a cell, wherein the array substrate and the color filter substrate are bonded together by means of sealants, which include first sealants arranged around an edge of the display panel, and a second sealant arranged on an inner side of the first sealant and connected to the first sealants; the second sealant divides a plastic frame formed by the first sealants into a plurality of plastic frame areas; the plurality of plastic frame areas are attached to the array substrate and the color filter substrate to define a plurality of accommodating spaces; and each accommodating space is filled with a liquid crystal layer.