Display Panel Corner Retaining Wall Against GOA Corrosion
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Solution Overview
Problem
GOA devices near the corners of display panels are prone to corrosion due to external water vapor ingress, leading to abnormal display issues.
Innovation Solution
A display panel design incorporating a retaining wall in the liquid crystal layer, surrounded by a sealant, which hinders the flow of liquid crystals and blocks external water vapor, thereby prolonging the time for corrosion to reach the GOA devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the liquid crystal cell is made with narrow frame requirements, then the display quality is improved, but the sealing property of the sealant is weakened, reducing insulation effect against water vapor
Solution Approach 1:
The patent divides the sealing system into two parts: the sealant for overall sealing and the retaining wall for corner protection. The retaining wall is segmented into multiple sections (first retaining wall and second retaining wall) that work together to block water vapor ingress paths at the corners, thereby maintaining reliability even with narrow frames.
Solution Approach 2:
The retaining wall acts as an intermediary structure between the sealant and the GOA devices. It provides an additional barrier specifically at the corner regions where water vapor would otherwise penetrate through the sealant, protecting the sensitive GOA devices without affecting the overall narrow frame design.
2Length of moving object
If the sealant insulation effect is reduced, then the frame width can be reduced, but water vapor can more easily reach and corrode GOA devices
Solution Approach 1:
The patent applies local quality by placing the retaining wall specifically at the corner regions where water vapor ingress is most likely to occur. This localized protection provides enhanced barrier properties exactly where needed, allowing the overall frame to remain narrow while protecting vulnerable areas from water vapor corrosion.
3Stability of the object's composition
If the liquid crystal layer is continuous from display area to non-display area, then the display uniformity is improved, but the corrosion resistance is reduced due to direct exposure at corners
Solution Approach 1:
The patent segments the liquid crystal layer protection by introducing retaining walls that divide the continuous liquid crystal layer into protected and exposed sections. The retaining walls create separate pathways that prevent direct water vapor contact with the GOA devices while maintaining the overall continuous structure for display uniformity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The retaining wall structure prolongs the corrosion time of GOA devices, enhancing the service life of the panel by blocking water vapor ingress and maintaining panel integrity.
Implementation Method 1
Because the retaining wall is organic and liquid crystals are organic, there will be a molecular force between them. Existence of the retaining wall will hinder flow of the liquid crystals.
Data Source
AI summary
A display panel is disclosed in an embodiment of this invention, which includes a display area and a non-display area surrounding the display area, an array substrate and a color film substrate arranged opposite to each other and both extending from the display area to the non-display area, a liquid crystal layer arranged between the array substrate and the color film substrate and extending from the display area to the non-display area, a sealant surrounding the liquid crystal layer and arranged in the non-display area, and a retaining wall arranged in the liquid crystal layer in the non-display area.