Rollable Display Side Covers Prevent GIP Cracks
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Solution Overview
Problem
Rollable display devices face issues with cracks and damage to the gate in panel (GIP) unit due to repeated rolling, leading to driving failure and reliability defects.
Innovation Solution
The implementation of a display device design that includes a back cover and side covers to support the display panel, with the side covers fastened to the side surfaces contacting a low-curvature contact portion of the roller, reducing stress during rolling and preventing cracks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display panel is formed on a flexible substrate to enable rolling, then the display device can be wound or unwound, but cracks and damage occur to the GIP unit due to repeated rolling
Solution Approach 1:
The side cover is divided into multiple unit side covers that can be independently assembled. Each unit side cover supports a specific portion of the display panel, allowing the structure to be modular and adaptable while providing distributed support to prevent stress concentration on the GIP unit during rolling.
Solution Approach 2:
The unit side covers are positioned specifically at the side surfaces of the display panel where stress occurs during rolling. This localized support structure provides enhanced protection exactly where needed - at the vulnerable side regions - while allowing other areas of the display panel to maintain their flexibility for rolling operation.
2Reliability
If side covers are fastened to support the display panel during rolling, then stress on the GIP unit is reduced, but the device structure becomes more complex
Solution Approach 1:
The side covers are designed as thin, flexible components that can conform to the curved surface of the rolled display panel. This flexibility allows the side covers to maintain contact and provide support during rolling without requiring complex rigid mounting structures, thereby reducing overall structural complexity while maintaining stress protection.
Solution Approach 2:
By dividing the side cover into multiple unit side covers, the structure becomes more manageable and easier to assemble. Each unit can be independently positioned and fastened, simplifying the manufacturing process and reducing the complexity compared to a single large side cover structure.
Data Source
AI summary
A display device according to an exemplary aspect of the present disclosure may include a display panel including a non-display area, a back cover supporting the display panel on one surface of the display panel, a roller for winding or unwinding the display panel and the back cover and side covers covering a portion of the non-display area of the display panel and a portion of a side surface of the back cover corresponding thereto, and including a plurality of unit side covers to thereby support the non-display area of the display panel when the roller is wound. Thus, stress generated during rolling can be reduced and accordingly, it is possible to prevent cracks and damage to the GIP unit.