LCD Panel Sealant Structure for Uniform Box Thickness
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Solution Overview
Problem
The yellowing phenomenon occurs in the peripheral region of liquid crystal display (LCD) devices due to non-uniform box thickness, where the box thickness of the display area is greater than that of the sealant area.
Innovation Solution
A display panel design that includes a first substrate, a second substrate, a light-obstructing layer, a color resistance layer, and support pillars, where the color resistance layer and support pillars are disposed in the sealant area to increase its box thickness, ensuring uniformity with the display area by adjusting the surface area and distribution of the color resistance layer and support pillars.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the box thickness of the display area is increased, then the display quality is improved, but the box thickness of the sealant area becomes smaller, causing non-uniformity and yellowing phenomenon
Solution Approach 1:
The patent applies local quality by adding a light-obstructing layer specifically in the sealant area, and positioning support pillars at specific locations within the sealant area, rather than uniformly across the entire display panel. This localized modification increases box thickness only where needed (in the sealant area) without affecting the display area, thereby achieving uniform box thickness across different regions and eliminating the yellowing phenomenon caused by thickness non-uniformity.
2Manufacturing precision
If support pillars are added to increase sealant area box thickness, then box thickness uniformity is improved, but device complexity increases
Solution Approach 1:
The light-obstructing layer serves multiple functions: it blocks light in the sealant area to prevent yellowing visibility, provides structural support to increase box thickness in the sealant area, and maintains overall panel uniformity. By making this single component multi-functional, the patent avoids adding separate structures, thereby improving box thickness uniformity without significantly increasing device complexity.
Data Source
AI summary
A display panel and a display device are provided. The display panel includes: a first substrate and a second substrate disposed opposite the first substrate; a light-obstructing layer, which is disposed on one side of the first substrate close to the second substrate and includes a first light-obstructing layer disposed in a sealant area; a color resistance layer including a first color resistance layer disposed in the sealant area and on one side of the first light-obstructing layer close to the second substrate; and a first support pillar disposed in the sealant area and between the first color resistance layer and the second substrate.