Roll-up Display Connection Member Elongation Control
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Solution Overview
Problem
The existing display apparatus with flexible panels faces quality reduction and difficulty in rolling up due to contact failures caused by the pull of the flexible film, especially when the back cover's elasticity is similar to that of the display panel, and it becomes challenging to roll up if the back cover's curvature is prevented.
Innovation Solution
A display apparatus design featuring a flexible display panel, a drive board, a flexible connection board, and a core with a plate-shaped connection member that includes a first part overlapping the display panel and a second part overlapping the flexible board, where the elongation rate of the second part is smaller than the first part, allowing for controlled rolling without quality reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the elasticity of the back cover overlapping the flexible film is made similar to the display panel, then the display panel can be easily rolled up, but contact failure or other failures occur due to the pull of the flexible film
Solution Approach 1:
The back cover is designed with different elasticity characteristics in different regions: the first region (overlapping the display panel) has elasticity similar to the display panel for easy rolling, while the second region (overlapping the flexible film) has different elasticity to prevent contact failure. This local differentiation resolves the contradiction between ease of rolling and quality maintenance.
2Reliability
If the back cover overlapping the flexible film is prevented from being curved, then quality is maintained, but it becomes difficult to roll up the display panel and other parts
Solution Approach 1:
The back cover is divided into multiple regions with different functional characteristics: a first region that allows curvature for easy rolling, and a second region that maintains quality by preventing contact failure. This segmentation enables the back cover to simultaneously satisfy both requirements of ease of operation and quality maintenance.
3Ease of operation
If the elongation rate of the plate-shaped member overlapping the flexible board is increased, then the display panel can be easily rolled up, but the flexible board experiences pull and contact failure
Solution Approach 1:
The plate-shaped member is designed with different elongation rates in different regions: the first part overlapping the display panel has higher elongation rate for easy rolling, while the second part overlapping the flexible board has controlled elongation rate to prevent pull and contact failure. This local differentiation resolves the contradiction between ease of rolling and quality maintenance.
Data Source
AI summary
A display apparatus includes a flexible display panel, a drive board that drives the display panel, a flexible board that connects the display panel and the drive board, a core to which the drive board is fixed, rolls up the display panel and the flexible board, and a connection member including a plate-shaped member that is layered on the display panel, connects the display panel and the core, and is rolled up around the core along with the display panel and the flexible board. The plate-shaped member includes a first part overlapping the display panel and curved when the display panel is rolled up around the core and a second part overlapping the flexible board and curved when the flexible board is rolled up around the core. In a roll-up direction, an elongation rate of the second part is smaller than that of the first part.