Display Panel Support Structure for Bending Stress Relief
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Solution Overview
Problem
Flexible display panels in large-size splicing screens face damage due to rebound forces generated by bending stress, particularly in the binding and bending regions.
Innovation Solution
The display panel design incorporates a support structure with an oblique lateral surface and rounded corners in the bending region, along with a transition region and arc-shaped surfaces to distribute bending stress, reducing the hollowed-out area and minimizing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the binding region is bent to the backlight side to achieve flexible display, then the display can be folded or spliced, but rebound force is generated due to bending stress causing damage
Solution Approach 1:
The support structure implements local quality by providing differentiated geometric configurations in different regions: the first lateral surface has an oblique design with acute angles to reduce stress concentration at the bending start, while the second lateral surface has an obtuse angle design to accommodate the bending end. This localized structural optimization allows the support to provide region-specific stress distribution, enabling flexible bending while preventing damage through targeted structural reinforcement where needed most.
Solution Approach 2:
The support structure applies curvature principles through its lateral surfaces that are designed with oblique and obtuse angles rather than sharp edges. The first lateral surface transitions with an acute angle and the second with an obtuse angle, creating a gradual curvature effect that distributes bending stress smoothly. This curved geometric approach prevents stress concentration that would occur with sharp corners, thereby reducing rebound force damage while maintaining flexible display functionality.
2Reliability
If a support structure is added to reduce bending stress, then damage is prevented, but device complexity increases
Solution Approach 1:
The support structure merges multiple functions into a single component: it provides mechanical support, stress distribution, and geometric configuration for bending control all in one integrated structure. The oblique first lateral surface and obtuse second lateral surface are combined into a unified support element that simultaneously achieves stress reduction and structural support, avoiding the need for multiple separate components and thereby limiting the increase in device complexity.
Solution Approach 2:
The support structure utilizes parameter changes in its geometric configuration - specifically the acute angle of the first lateral surface and the obtuse angle of the second lateral surface - to achieve stress distribution without adding complex mechanisms. By varying the angular parameters of a simple support structure, the patent achieves damage prevention through straightforward geometric optimization rather than complex mechanical systems.
Data Source
AI summary
The present disclosure provides a display panel, a splicing screen, and a display device. The display panel includes: a display substrate, the display substrate including a display region and a non-display region surrounding the display region, the non-display region including a binding region, and a bending region arranged between the display region and the binding region; and a support arranged at a backlight side of the display substrate. The support includes, along a light-exiting direction of the display substrate, a first surface, a second surface and a first lateral surface, the first lateral surface is an oblique surface, an angle between the first lateral surface and the first surface is an acute angle, and an angle between the first lateral surface and the second surface is an obtuse angle.