Display Panel Protrusion Waterproofing Design
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Solution Overview
Problem
Conventional display panels, such as liquid crystal display panels, suffer from poor waterproofing due to short moisture entry paths at planar contact surfaces between substrates and sealing adhesives.
Innovation Solution
The display panel design incorporates protrusions on one substrate and corresponding recesses on the other, with the protrusions being thicker than the substrate spacing, increasing the contact area with sealing adhesives and creating a longer moisture entry path, thereby enhancing waterproofing. The protrusions are made of light shielding materials and have trapezoid or sawtooth cross-sections for increased surface area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If planar contact surfaces are used between substrates and sealing adhesive, then the structure is simple and easy to manufacture, but the waterproofing performance is poor due to short moisture entry paths
Solution Approach 1:
The invention replaces planar contact surfaces with curved or inclined contact surfaces formed by protrusions and recesses. The protrusions on one substrate have curved or inclined side surfaces that contact the sealing adhesive at angles, creating longer moisture entry paths and improving waterproofing performance without significantly complicating the manufacturing process
Solution Approach 2:
The invention transitions from two-dimensional planar contact surfaces to three-dimensional protrusion structures with varying heights and inclined surfaces. This dimensional change creates multiple contact points and extended moisture paths, enhancing waterproofing while maintaining structural simplicity through the use of standardized protrusion shapes
2Reliability
If protrusions with increased thickness and complex cross-sections are used, then the contact area with sealing adhesive is increased and waterproofing is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The protrusions are designed with segmented features including multiple side surfaces (first, second, third side surfaces) with different orientations. This segmentation allows each surface to be formed by independent manufacturing steps or processes, making it easier to control the precision of each individual surface while achieving the overall complex geometry needed for improved waterproofing
Solution Approach 2:
The invention specifies particular parameter ranges for the protrusions, including thickness ratios relative to substrate spacing, angular ranges for side surfaces, and height relationships. By defining these parameters within specific ranges rather than exact values, the design accommodates normal manufacturing variations while still achieving the desired waterproofing performance
Data Source
AI summary
The present invention provides a display panel and a display device. Within a bezel region, the display panel includes a first substrate and a second substrate arranged corresponding to each other. A protrusion is placed on a first surface of the first substrate, which faces the second substrate. The display panel also includes a sealing adhesive filled in a gap between the first substrate and the second substrate. Because of the protrusion, a contact area between the first substrate and the sealing adhesive is increased, a longer path for entry of moisture is created, and the display panel, such as a liquid crystal display, has a better waterproofing.