Rollable Display Support With Through-Holes for Compact Winding
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Solution Overview
Problem
Existing rollable display apparatuses face challenges in providing a support structure that can be wound and accommodated with the display panel when rolled and also support the unfolded panel effectively without creating excessive dead space.
Innovation Solution
A rollable display apparatus featuring a support structure with a first and second roller, where the support includes holes along its length, allowing it to be bistable and provide minimal dead space when wound or unwound, with specific dimensions and orientations to facilitate smooth rolling and support of the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a support structure is added to back the display panel, then the display panel is supported and prevented from sagging, but the dead space increases and the rolled size increases
Solution Approach 1:
The support is segmented by forming holes through it in the second direction, dividing the continuous support into multiple sections while maintaining overall structural integrity. This segmentation reduces the volume of material required and minimizes dead space when rolled, while the remaining support structure continues to provide adequate backing and prevent sagging of the display panel.
2Reliability
If the support is made rigid to effectively support the display panel, then the support capability is improved, but the ease of winding and rolling deteriorates
Solution Approach 1:
The support exhibits local quality variations through the holes formed in it, creating regions of different rigidity. The areas between holes maintain sufficient rigidity to support the display panel and prevent sagging, while the hole regions provide flexibility and reduce overall stiffness. This local variation in quality allows the support to be rigid enough for support functionality while remaining flexible enough for easy winding and rolling operations.
3Ease of operation
If the support is made flexible to allow easy rolling, then the ease of operation is improved, but the support capability deteriorates
Solution Approach 1:
The support structure achieves appropriate flexibility for rolling while maintaining support capability through local quality variations created by the holes. The holes are positioned and sized to provide sufficient flexibility for easy winding and rolling operations, while the remaining support material between holes maintains adequate rigidity to prevent sagging and support the display panel when unfolded.
4Volume of moving object
If the support is wound tightly to minimize dead space, then the volume is reduced, but the support structure may deform or fail to support properly
Solution Approach 1:
The holes segmented through the support in the second direction create a structure that can be tightly wound with minimal dead space while maintaining support capability. The segmented structure allows the support to conform to the roller during winding, reducing the accommodation space required, while the remaining support material between holes maintains sufficient integrity to provide support when unfolded and in use.
Data Source
AI summary
A display apparatus includes a first roller and a second roller each rolling about a rolling axis extending along a first direction and spaced apart from each other in a second direction crossing the first direction, a display panel connected to the first roller, and a support connected to the second roller and disposed on a rear surface of the display panel to support the display panel. A hole passing through the support is defined in the support, the support includes an end part surrounding a portion of the hole and extending along the first direction and a side part extending along the second direction from the end part, and the end part is convex toward the display panel in a cross section.