Curved Display Panel Support Layer Elastic Modulus Design
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Solution Overview
Problem
Display panels with curved surfaces often develop fitting wrinkles during the 3D pasting process, leading to suboptimal visual experience due to cutting seams at corners, which hinder the achievement of a full-screen, narrow-frame design.
Innovation Solution
A display panel design featuring a support layer with varying elastic moduli in different curved areas, allowing for partial tensile deformation during 3D pasting, ensuring a close attachment between the panel main body and the curved cover plate, thus avoiding wrinkles and bubbles, and enabling a narrow-frame full-screen display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the redundant part at the corners is cut off before 3D pasting to avoid fitting wrinkles, then the shape of the four-curved corners can be formed, but cutting seams appear in the corners affecting visual experience
Solution Approach 1:
The support layer is pre-designed with different elastic moduli in different regions before the 3D pasting process. The first curved area has a smaller elastic modulus to enable tensile deformation during pasting, while the second curved area has a larger elastic modulus to maintain shape stability, eliminating the need for corner cutting and preventing seam formation
Solution Approach 2:
The support layer is designed with spatially varying elastic modulus properties. The first curved area uses material with lower elastic modulus for flexibility and tensile deformation, while the second curved area uses material with higher elastic modulus for structural stability, allowing the panel to achieve proper shaping without cutting corners
2Ease of manufacture
If uniform elastic modulus is used throughout the support layer, then manufacturing is simple, but fitting wrinkles appear in curved areas during 3D pasting
Solution Approach 1:
The support layer is designed with spatially varying elastic modulus properties. The first curved area uses material with lower elastic modulus for flexibility and tensile deformation, while the second curved area uses material with higher elastic modulus for structural stability, allowing the panel to achieve proper shaping without cutting corners
Solution Approach 2:
The elastic modulus parameter of the support layer material is changed across different regions. The first curved area has a smaller elastic modulus range (1-20 MPa) for high deformability, while the second curved area has a larger elastic modulus range (1-10 GPa) for shape maintenance, enabling wrinkle-free fitting during 3D pasting
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents wrinkles and bubbles in curved areas, enhancing user visual experience by ensuring a seamless, narrow-frame full-screen display through controlled elastic modulus distribution in the support layer.
Implementation Method 1
An elastic modulus of the first part is smaller than an elastic modulus of the second part
Data Source
AI summary
Disclosed are a display panel and a display device. The display panel comprises a first curved area located between two second curved areas and corresponding to a corner of a plane area. The display panel comprises a support layer and a panel main body, and the support layer comprises a curved first part located in the first curved area and a curved second part located in the second curved area; the panel main body is located on the support layer and curved with the first part and the second part. An elastic modulus of the first part is smaller than an elastic modulus of the second part.