Guide Film Modulus Layout for Wrinkle-Free Foldable Displays
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Solution Overview
Problem
Existing display apparatuses face challenges in stably changing the shape of display panels, particularly in areas with multiple display regions that are foldable at preset angles, leading to issues such as wrinkle formation and structural instability.
Innovation Solution
A guide film with specific modular and layered structures, including areas with varying moduli and materials like silicon rubber, is used to stabilize and shape the display panel by applying external forces, ensuring smooth transformation without wrinkles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a display panel with multiple foldable display areas is designed, then the adaptability and functionality of the display apparatus is improved, but wrinkle formation and structural instability occur during shape changes
Solution Approach 1:
A guide film is introduced as an intermediary component between the display panel and the external environment. This guide film has a specific modulus value (1 MPa to 50 MPa) that allows it to mediate the shape changes of the foldable display areas, preventing wrinkle formation while enabling the required flexibility and adaptability.
2Adaptability or versatility
If the display panel shape is changed by applying external force, then the adaptability is improved, but wrinkle formation occurs on the surface
Solution Approach 1:
The guide film's modulus is specifically controlled to be within 1 MPa to 50 MPa. This parameter optimization allows the guide film to undergo significant deformation during shape changes without generating wrinkles, while still providing sufficient structural support to maintain surface smoothness.
3Reliability
If a guide film with specific modulus is used to stabilize the display panel, then the structural stability is improved, but the device complexity increases
Solution Approach 1:
The guide film is designed with spatially varying properties: the main area has a first modulus value while the subsidiary areas have a second modulus value. This local differentiation allows the guide film to provide enhanced stability in critical regions (main area) while maintaining flexibility in other regions (subsidiary areas), reducing the need for complex overall结构设计.
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 guide film effectively supports the display panel during shape changes, preventing wrinkles and ensuring stable, curved configurations, particularly at corner areas, enhancing the structural integrity and appearance of multi-display region devices.
Implementation Method 1
changing a shape of the display panel by applying an external force to the guide film
Data Source
AI summary
A guide film includes a main area, a first subsidiary area, and a second subsidiary area being apart from the first subsidiary area. The main area includes a central area having a rectangular shape in a plan view, a first side area arranged between the central area and the first subsidiary area, a second side area arranged between the central area and the second subsidiary area, and a first corner area connecting the first side area to the second side area.