Curved Display Backplate Corner Thickness for Warping
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Solution Overview
Problem
Conventional curved display modules suffer from warping issues at the corner areas due to stress concentration, which affects the encapsulation structure and display quality.
Innovation Solution
A display module design featuring a supporting component with a first backplate having a thicker unit in the corner areas, which increases the stress threshold for warping, thereby reducing the occurrence and amplitude of warping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the display panel is designed with a curved surface at the corners to improve visual experience, then the display appearance is enhanced, but stress concentration occurs at the corner areas leading to warping and damage
Solution Approach 1:
The patent applies local quality by making the first backplate thicker specifically at the corner areas where stress concentration occurs. This localized thickness increase provides enhanced structural support and stress resistance precisely where needed, while maintaining the overall curved corner design for visual appeal. The non-uniform thickness distribution resolves the contradiction between curved shape and stress resistance.
2Stability of the object's composition
If the display panel has a stacked structure with continuous surface to improve flexibility, then the display can be curved, but stress caused by material compression cannot be released leading to warping
Solution Approach 1:
The patent changes the physical parameter of the backplate thickness to resolve the stress accumulation problem. By increasing the thickness of the first backplate at corner areas, the structural rigidity is enhanced to counteract the compressive stresses that cannot be released in the stacked flexible display structure, thereby preventing warping while maintaining flexibility.
3Strength
If the thickness of the supporting component is increased at corner areas to reduce warping, then the stress threshold for warping is increased, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent implements local quality by configuring the first backplate with non-uniform thickness, specifically thicker at corner areas and thinner at other regions. This localized thickness variation targets the stress concentration zones without unnecessarily increasing the thickness of the entire backplate, thereby balancing improved stress resistance with controlled device complexity and manufacturing feasibility.
Data Source
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AI summary
A display module and a display device are provided. A curved display area of the display module includes a corner area and an edge area. The display module includes display panel and a supporting component. The display panel includes a display function part and a bonding part. The supporting part includes a first backplate and a second backplate. The first backplate includes a first unit disposed in the corner area. A thickness of the first unit is greater than a thickness of the second backplate.