Display Panel Edge Structure for Narrow Bezel Stress Relief
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Solution Overview
Problem
Existing display devices face limitations in size and lifespan due to stress from panel contraction and expansion, as well as challenges in minimizing the bezel area.
Innovation Solution
A display device design featuring a cover window, display panel, frame, adhesive layers, and molding member with specific concave and protruding shapes to minimize bezel space and relieve stress, including a manufacturing method that forms these components to enhance bonding strength and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional display device structure is used, then the manufacturing process is simple, but the stress from panel contraction and expansion limits device size and lifespan
Solution Approach 1:
The display device structure is divided into multiple functional layers including display panel, adhesive layers, molding member, and frame. Each layer serves specific functions and can be optimized independently, allowing stress management without compromising overall device integrity
Solution Approach 2:
Adhesive layers are introduced as intermediary elements between the display panel and molding member/frame. These adhesive layers act as stress buffers that absorb contraction and expansion forces, preventing direct stress transmission to the display panel and extending device lifespan
2Area of stationary object
If the molding member covers the entire side surface of the display panel, then protection is maximized, but the bezel area increases
Solution Approach 1:
The molding member is positioned to cover specific critical areas (side surfaces of display panel, adhesive layers, and frame) rather than the entire panel. This localized coverage approach minimizes bezel area while maintaining protection where it is most needed
Solution Approach 2:
The molding member extends in multiple dimensions to cover side surfaces and bottom surfaces of components. By utilizing three-dimensional positioning rather than simple planar coverage, effective protection is achieved with reduced visible bezel area
3Strength
If adhesive layers are used to bond components, then assembly is simplified, but bonding strength is insufficient under stress
Solution Approach 1:
The bonding system uses composite adhesive layers with specific material properties optimized for stress resistance. These adhesive materials combine flexibility to accommodate panel movement with sufficient bonding strength to maintain structural integrity, achieving both strong bonding and ease of manufacture
Data Source
AI summary
Disclosed is a display device and manufacture method thereof. The display device includes a cover window; a display panel below the cover window, including an active area, a first non-active area surrounding the active area, a bending area extending from one side of the first non-active area to be bent, and a second non-active area extending from one side of the bending area; a frame below the display panel; adhesive layers between the display panel and the cover window and between the display panel and the frame; a molding member below the cover window and covering a side surface of the display panel, side surfaces of the adhesive layers, a side surface of the frame, and a part of a bottom surface of the frame, and a side surface of some of the adhesive layers has an inwardly concave shape in a part of the interface with the molding member.