Flexible Display Substrate Deformation Prevention
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Solution Overview
Problem
Flexible display devices face deformation issues when the base substrate is removed during manufacturing, leading to instability and potential separation of attached elements due to the loss of supporting force, causing the flexible substrate to wrinkle and become unstable.
Innovation Solution
A flexible display device design that includes a deformation-preventing portion on the opposite surface of the flexible substrate, which is overlapped with a specific area to brace the substrate and prevent deformation, using a relatively solid material such as glass or plastic to support the thin flexible substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the base substrate is removed from the flexible display device, then the flexible substrate can achieve flexibility and bending capability, but the flexible substrate becomes unstable and deforms due to loss of supporting force
Solution Approach 1:
The base substrate is segmented: a portion is removed to enable flexibility, while another portion is retained as a deformation-preventing portion to maintain stability. This partial retention resolves the contradiction by dividing the base substrate's function into flexibility-enabling and stability-maintaining regions.
Solution Approach 2:
Different regions of the flexible substrate have different requirements: the display area needs flexibility while the edge area needs stability. The deformation-preventing portion is selectively placed at the edge, providing local stability without compromising overall flexibility. This local quality approach resolves the contradiction by applying stability only where needed.
2Adaptability or versatility
If the flexible substrate is made thinner to achieve better flexibility, then the bending capability improves, but the substrate becomes more prone to deformation and wrinkling
Solution Approach 1:
The flexible substrate is combined with the deformation-preventing portion to create a composite structure. The thin flexible substrate provides bending capability while the solid deformation-preventing portion provides mechanical strength and prevents deformation. This composite approach resolves the contradiction by combining materials with complementary properties.
3Adaptability or versatility
If elements are attached to the flexible substrate without a base substrate, then the device achieves flexibility, but the attached elements become unstable and may separate
Solution Approach 1:
The base substrate support function is segmented and retained only at the edge where elements are attached. This deformation-preventing portion provides localized stability to secure element attachment while allowing the rest of the substrate to remain flexible for display functionality.
Solution Approach 2:
The deformation-preventing portion is retained from the base substrate before element attachment, providing pre-established stability and support. This preliminary retention of structural support ensures that elements attach reliably to a stable surface before the final flexible device is completed.
Data Source
AI summary
Disclosed is a flexible display device that may include a flexible substrate; a display device layer provided on a first surface of the flexible substrate; and a deformation-preventing portion provided on a second surface of the flexible substrate, the second surface corresponding to the opposite surface to the first surface provided with the display device layer, wherein the display device layer includes a first area and a second area, and the deformation-preventing portion is overlapped with the second area.