Flexible Display Deformation Prevention Unit
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Solution Overview
Problem
Flexible display apparatuses face challenges in maintaining accuracy and image quality due to substrate deformation during manufacturing and usage, which affects durability and stability of the display.
Innovation Solution
Incorporating a deformation prevention unit made of a more rigid material around the display region on the flexible substrate, separate from the pad unit, to prevent abnormal deformation, which can include metal materials and patterns extending along the substrate sides, and potentially sharing materials with the TFT electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible substrate is used to enable bending and flexibility, then adaptability and versatility are improved, but the substrate deforms during manufacturing processes such as extension and film lamination, causing deterioration of manufacturing precision and image quality
Solution Approach 1:
The patent applies local quality by creating a deformation prevention unit with different material properties (higher rigidity) than the flexible substrate, positioned specifically around the display region. This localized structural modification prevents substrate deformation in critical areas during manufacturing while preserving the overall flexibility of the display apparatus.
Solution Approach 2:
The patent employs composite materials by combining the flexible substrate with a deformation prevention unit made of different materials (such as metal materials or materials with greater rigidity). This composite structure allows the display apparatus to maintain flexibility while preventing abnormal deformation during extension and lamination processes.
2Adaptability or versatility
If a flexible substrate is used to enable bending, then adaptability is improved, but the substrate and formed layers become unstable, limiting durability
Solution Approach 1:
The deformation prevention unit is strategically positioned around the display region to provide localized structural support. This ensures that critical areas maintaining stability and durability while allowing the overall device to remain flexible and adaptable.
Solution Approach 2:
By combining the flexible substrate with a rigid deformation prevention unit, the patent creates a composite structure that balances flexibility with stability. The different material properties work together to enhance durability while preserving the desired flexible characteristics.
3Ease of operation
If the flexible substrate is allowed to deform naturally, then ease of operation for bending is improved, but image quality deteriorates due to abnormal deformation
Solution Approach 1:
The deformation prevention unit is positioned specifically around the display region to prevent abnormal deformation that would affect image quality. This localized approach allows the rest of the substrate to remain flexible and easy to operate while protecting the critical display area.
Data Source
AI summary
A flexible display apparatus, an organic light emitting display apparatus, and a mother substrate for flexible display apparatus that have improved durability and image quality. The flexible display apparatus includes a flexible substrate, a display region that is defined on the flexible substrate and that comprises a pixel unit and a circuit unit, a pad unit that is formed adjacent to the display region, and a deformation prevention unit that is disposed around the display region, that is separated from the pad unit, and that comprises a material having a greater rigidity than that of the flexible substrate.