Resin-Covered Display Panel Structure for Narrow-Bezel Strength
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Solution Overview
Problem
Existing display devices face challenges in enhancing the mechanical strength of display panels, pad driving units, and circuit boards while also improving manufacturing ease, particularly in reducing the non-display area for an immersive experience and improved aesthetics.
Innovation Solution
A display device design that includes a resin layer covering display drivers and circuit boards, with specific shapes and thickness variations to enhance mechanical strength and ease of manufacturing, and a method of applying the resin layer using a jig to control its flow and shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the non-display area width is decreased to enhance immersive experience and aesthetics, then the display area ratio is improved, but the mechanical strength of the display panel and pad driving unit deteriorates
Solution Approach 1:
The resin layer is designed with non-uniform thickness, featuring a thicker portion (first thickness) in the non-display area and a thinner portion (second thickness) in the display area. This local variation in quality allows the resin layer to provide enhanced mechanical reinforcement where needed (non-display area) while maintaining display quality and aesthetics in the display area, thus resolving the contradiction between reduced non-display area width and maintained mechanical strength.
2Strength
If the resin layer thickness is increased to enhance mechanical strength, then the protection and reinforcement are improved, but the manufacturing complexity and precision requirements deteriorate
Solution Approach 1:
Instead of applying a uniformly thick resin layer throughout, the patent implements a resin layer with spatially varying thickness. The thicker portion is localized to the non-display area for enhanced reinforcement, while the thinner portion in the display area reduces manufacturing complexity. This local quality approach allows achieving the required mechanical strength without imposing uniform high precision requirements across the entire structure.
3Strength
If the resin layer covers the entire display panel including pad area, then the mechanical strength is improved, but the manufacturing process complexity increases
Solution Approach 1:
The resin layer is segmented into distinct portions with different thickness characteristics: a first portion with greater thickness located in the non-display area and a second portion with lesser thickness located in the display area. This segmentation allows the manufacturing process to address different regions with appropriate complexity levels, providing enhanced strength where needed while simplifying the overall manufacturing process compared to a uniformly thick coating.
Data Source
AI summary
A display device is provided. The display device includes a display panel including a main area, a bending area, and a pad area; a display driver and a circuit board disposed on the pad area of the display panel a resin layer disposed on the display panel and covering the display driver and the circuit board; and a polarizing film disposed on the resin layer, wherein the resin layer is formed in portions overlapping the main area, the bending area, and the pad area.