Display Panel Spacer Design for Dropping Margin and Cell Gap Uniformity
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Solution Overview
Problem
The existing liquid crystal display devices face challenges in maintaining a uniform cell gap and preventing smear damage due to external forces, which are exacerbated by the non-uniform dispersion of liquid crystal during the dropping process and the reduction of column spacer volume.
Innovation Solution
The implementation of a color filter substrate with a first region and a second region, featuring a first member and a second member respectively to maintain the cell gap and absorb external forces, where the first member acts as a main column spacer and the second member acts as a sub column spacer with different heights to ensure uniformity and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the volume of the column spacer is reduced to improve the margin of the dropping process, then the dropping process margin is improved, but the cell gap cannot be uniformly maintained resulting in smear damage
Solution Approach 1:
The column spacer is divided into two distinct parts: a main column spacer and a sub column spacer. The main column spacer provides the primary cell gap maintenance function, while the sub column spacer provides additional support and uniformity. This segmentation allows each part to perform its specific function optimally without requiring a reduction in overall spacer volume, thus preventing smear damage while maintaining dropping process margin.
Solution Approach 2:
The column spacer system uses a composite structure combining two different spacer components with potentially different material properties or dimensional characteristics. This composite approach enables the system to simultaneously achieve both improved dropping process margin and uniform cell gap maintenance, resolving the contradiction between reliability and manufacturing precision.
2Manufacturing precision
If a sub column spacer with different height is used to maintain cell gap uniformity and prevent smear damage, then cell gap uniformity is maintained, but the manufacturing process becomes complex
Solution Approach 1:
The main column spacer and sub column spacer are combined into a single integrated column spacer structure. This merging eliminates the need for separate assembly steps and reduces manufacturing complexity while maintaining the dual-function capability of providing both cell gap maintenance and smear damage prevention through the unified spacer design.
Data Source
AI summary
A display panel and a method for manufacturing the display device having the display pixel, includes forming a first substrate with pixel areas and a second substrate facing the first substrate. The second substrate includes a color filter layer having a first region and a second region that is arranged lower than the first region. A first member is arranged in the first region between the first substrate and the second substrate to maintain a cell gap between the first substrate and the second substrate. The second cell gap-maintaining member is arranged in the second region between the first substrate and the second substrate to absorb an external force being applied to the first substrate and the second substrate.