Scroll-Type Display Panel Support Layer for Bending and Shear Resistance
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Solution Overview
Problem
Existing scroll-type display panels face issues with shearing stress and breakage due to layer staggering and limited stress absorption by optical adhesive layers, leading to interlayer fall-off and structural weakness during winding and stretching.
Innovation Solution
The scroll-type display panel incorporates a support layer with first and second wound portions featuring different area ratios of hollowed-out openings, enhancing bending and anti-stretching capabilities to mitigate stress and prevent breakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If optical adhesive layers are used to absorb stress during winding, then some stress absorption is achieved, but the shearing stress is insufficient and interlayer fall-off occurs
Solution Approach 1:
The support layer is designed with different hollowed-out opening area ratios in different regions: the first wound portion has a larger area ratio to enhance bending capability and stress absorption, while the second wound portion has a smaller area ratio to maintain structural strength and resist shearing stress. This local differentiation resolves the contradiction between stress absorption and shear resistance.
2Strength
If the support layer structure is made more robust to prevent breakage, then structural strength is improved, but bending capability and stress absorption are reduced
Solution Approach 1:
The support layer employs differentiated hollowed-out opening designs: the first wound portion with larger area ratio provides enhanced bending capability and stress absorption for adaptability, while the second wound portion with smaller area ratio maintains structural strength. This local quality differentiation allows the same support layer to simultaneously achieve both bending adaptability and structural strength.
Data Source
AI summary
A scroll-type display panel and a scroll-type display device. The scroll-type display panel comprises a display module; the display module comprises: a support layer and an array substrate; the support layer comprises a first wound portion and a second wound portion which are distributed in a winding direction; the array substrate is located on one side of the support layer, and an orthographic projection of the array substrate on the support layer is located on the first wound portion, wherein hollowed-out openings are provided on both the first wound portion and the second wound portion, and the area ratio of the hollowed-out openings to the first wound portion is greater than the area ratio of the hollowed-out openings to the second wound portion.