Display Panel Support Pillar Height Compensation for Liquid Crystal Uniformity
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Solution Overview
Problem
In liquid crystal display manufacturing, the difference in film thicknesses of color filters leads to uneven liquid crystal distribution, causing issues with the liquid crystal edge and affecting the manufacturing process, resulting in reduced product yield and display quality.
Innovation Solution
A display panel design featuring a substrate with three types of color filters of different heights, supported by main and auxiliary support pillars with specific height differences, where the first and second section differences are made equal, allowing for improved liquid crystal edge stability and reduced liquid crystal aggregation at the vacuum boundary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the film thicknesses of color filters are made different to perfectly reproduce color, then color display quality is improved, but liquid crystal distribution becomes uneven causing manufacturing issues and reduced yield
Solution Approach 1:
The patent applies local quality by making different parts of the support pillar structure have different heights. The first support pillar has a different height from the second and third support pillars, creating localized structural variations that compensate for the different color filter thicknesses. This allows each region to be optimized for its specific requirements while maintaining overall system balance.
2Manufacturing precision
If the support pillar section differences are made unequal due to different color filter heights, then color reproduction is improved, but liquid crystal edge stability deteriorates
Solution Approach 1:
The patent changes the height parameter of the support pillars to compensate for the different color filter thicknesses. By adjusting the first support pillar height to be different from the second and third support pillars, the overall optical path and mechanical support are balanced, maintaining liquid crystal edge stability despite variations in color filter thickness.
3Ease of manufacture
If conventional support pillars with unequal section differences are used, then manufacturing simplicity is maintained, but product yield and display quality are reduced
Solution Approach 1:
The patent implements local quality by creating specific height differences in the support pillar structure. The first support pillar has a different height from the second and third support pillars, which locally compensates for color filter thickness variations. This targeted approach improves product yield and display quality while maintaining overall manufacturing simplicity through a systematic pillar height design.
Data Source
AI summary
The present application discloses a display panel, a manufacturing method and a display device. The display panel comprises: a color photoresist layer, formed on the substrate, and comprising three types of parallelly disposed first color filter, second color filter and third color filter in different heights; a support pillar, disposed on the color photoresist layer, and comprising a main support pillar disposed on the first color filter; a first auxiliary support pillar, disposed on the second color filter; and a second auxiliary support pillar, disposed on the third color filter. A height difference between the main support pillar and the first auxiliary support pillar is a first section difference; and a height difference between the main support pillar and the second auxiliary support pillar is a second section difference, wherein the first section difference is the same as the second section difference.