LCD Panel Substrate Coupling Structure for Waterproof Sealing
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Solution Overview
Problem
LCDs without a planarization layer suffer from poor waterproofing and weak structural integrity due to increased vulnerability to external water/moisture and reduced connection force between the array substrate and the color filter substrate.
Innovation Solution
Incorporating a first connection element in the passivation layer and a colloid layer that couples the array substrate to the color filter substrate, enhancing the connection between the two substrates and improving waterproofing and robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the planarization layer is omitted to reduce production time, then productivity is improved, but waterproofing and structural strength deteriorate
Solution Approach 1:
The invention divides the connection structure into multiple segments: connection holes penetrating the passivation layer, colloid material filling these holes, and protrusions extending from the color filter substrate. This segmented approach creates multiple barriers against water/moisture penetration while maintaining structural integrity without requiring a planarization layer
Solution Approach 2:
The colloid material serves as an intermediary substance that fills the connection holes and bonds the array substrate and color filter substrate together. This intermediary provides both mechanical strength and waterproofing functionality, compensating for the omitted planarization layer
2Productivity
If the planarization layer is omitted to reduce production time, then productivity is improved, but connection force between substrates deteriorates
Solution Approach 1:
The protrusions extending from the color filter substrate into the connection holes create a curved, interlocking geometry that enhances mechanical bonding. This curved structure increases the contact area and bonding strength between substrates, compensating for the omitted planarization layer
Solution Approach 2:
The invention uses a composite structure combining the passivation layer, colloid material, and protrusions to achieve both mechanical strength and waterproofing. This composite approach replaces the functional roles previously fulfilled by the planarization layer
Data Source
AI summary
The present application provides a display panel and a display device. The display panel includes an array substrate, a color filter substrate, and a colloid layer. The array substrate includes a thin film transistor layer and a passivation layer. The passivation layer includes at least one first connection element. The color filter substrate is disposed opposite to the array substrate. The colloid layer is arranged between the passivation layer and the color filter substrate, the colloid layer is connected to the first connection element, and the colloid layer and the first connection element couple the array substrate to the color filter substrate.