Flexible Display Stress Distribution via Support Member Height Variation
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Solution Overview
Problem
Flexible display devices face stress concentration issues during unrolling, leading to potential damage due to the design of support members and tension members, which affects their service life and usability.
Innovation Solution
A display assembly with a flexible display panel divided into regions, featuring bar-shaped support members and a tension member system where the support members are strategically positioned on the non-display side with varying distances from the panel to distribute stress evenly, preventing concentration at the unrolling interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If support members and tension members are designed for flexible display devices, then the devices can achieve rollable and slidable functions, but stress concentration occurs during unrolling which reduces service life
Solution Approach 1:
The patent applies local quality by differentiating the positions and heights of support members in different regions. First support members are positioned in a first region with a first height, while second support members are positioned in a second region with a second height that is lower than the first height. This creates localized structural characteristics that distribute stress appropriately during unrolling, preventing stress concentration and improving reliability while maintaining rollable functionality.
2Device complexity
If support members are positioned close to the flexible display panel, then the structure is compact, but stress concentrates at the unrolling interface
Solution Approach 1:
The patent resolves the contradiction by introducing a height dimension variable. Instead of only changing the horizontal position of support members, the invention varies the vertical height of support members in different regions. First support members have a greater height from the flexible display panel than second support members, creating a stepped configuration that disperses stress in the vertical dimension while maintaining overall structural compactness.
3Ease of manufacture
If uniform support members are used across the display panel, then manufacturing is simplified, but stress distribution is uneven during unrolling
Solution Approach 1:
The patent implements local quality by creating different types of support members for different regions. The first support members in the first region have a different height configuration compared to the second support members in the second region. This localized differentiation optimizes stress distribution during unrolling while still using standardized manufacturing processes for each type of support member, balancing manufacturing ease with stress distribution uniformity.
Data Source
AI summary
A display assembly and a display device are provided. The display assembly includes: a flexible display panel including first and second regions arranged side by side; at least one tension member each including a connection portion that is fixed in the first region, the connection portion has a first surface distal to the flexible display panel; at least one first support member in the first region; at least one second support member in the second region; wherein the at least one first support member, the at least one second support member and the connection portion are all on a non-display side of the flexible display panel; the at least one first support member has a first surface distal to the flexible display panel; and the first surface of the connection portion is closer to the flexible display panel than the first surface of the first support member.