Rollable Display Panel with Slit Metal Cover and Resin Layer
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Solution Overview
Problem
Flexible display devices face challenges in stable winding and unwinding on rollers due to the lack of a protective cover that prevents permanent deformation and exposure, especially when using organic light-emitting diode (OLED) panels.
Innovation Solution
A display device design incorporating a metal cover with elongated slits and resin layers to protect the display panel, ensuring it is not exposed and preventing permanent deformation during winding and unwinding processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal cover is used to protect the display panel, then protection strength is improved, but the risk of permanent deformation during winding increases
Solution Approach 1:
The metal cover is designed with elongated slits that allow it to flex and deform elastically during winding and unwinding operations. The slits enable the rigid metal cover to accommodate curvature changes without permanent deformation, combining protection strength with flexibility.
Solution Approach 2:
The metal cover is divided into multiple segments by the elongated slits, allowing each segment to move independently during winding. This segmentation enables the cover to adapt to curvature changes while maintaining overall structural integrity and protection capability.
2Adaptability or versatility
If the display panel is made thin for flexibility, then adaptability is improved, but the risk of exposure and damage increases
Solution Approach 1:
The resin layer is designed as a flexible protective film that conforms to the thin display panel. It provides continuous coverage and protection against exposure and damage while allowing the panel to maintain its thin profile and flexibility for winding applications.
Solution Approach 2:
The protective structure combines the thin display panel with the resin layer to create a composite structure. This composite maintains the flexibility of the thin panel while adding the protective qualities of the resin material, preventing exposure and damage.
3Reliability
If a protective cover is added to prevent deformation, then reliability is improved, but device complexity increases
Solution Approach 1:
The resin layer is applied as a thin film coating that provides protection without adding significant structural complexity. It conforms to the display panel surface and can be applied in a straightforward manufacturing process, maintaining simplicity while improving reliability.
4Weight of moving object
If the metal cover is made thin to reduce weight, then weight is reduced, but the risk of permanent deformation increases
Solution Approach 1:
The elongated slits in the thin metal cover enable it to flex without breaking or deforming permanently. The slits allow the thin cover to accommodate stress during winding while maintaining its lightweight advantage.
Solution Approach 2:
The segmentation created by elongated slits in the thin metal cover allows each segment to flex independently, distributing stress and preventing permanent deformation even though the overall cover remains thin and lightweight.
Data Source
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AI summary
A display device is disclosed. The display device comprises a housing, a roller located within the housing, a display panel comprising a front surface and a rear surface, and a plate coupled to the back surface of the display panel and comprising an opening, wherein the display panel and the plate are wound on the roller.