Inset Cover Plate Structure for Foldable Display Edge Cracking
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Solution Overview
Problem
Foldable display modules are prone to cracks or breaks at the edge of the cover plate, affecting their reliability.
Innovation Solution
A display module design where the edge of the cover plate's orthographic projection is located inside the edge of the display panel's projection, with an elastic protection layer attached to the cover plate's side edges to prevent cracks from cutting and external impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the cover plate edge is exposed beyond the display panel edge, then the cover plate provides structural support and aesthetic appearance, but the edge is prone to cracks and breaks during fabrication and use
Solution Approach 1:
The cover plate is designed with its edge positioned inside the display panel edge, creating a nested configuration where the cover plate edge is embedded within the boundary of the display panel. This nesting approach protects the cover plate edge from external impacts and fabrication errors while maintaining structural integrity and aesthetic appearance.
Solution Approach 2:
A protection layer is added to the cover plate edge before use, providing a cushioning effect that absorbs external impacts and prevents cracking. This beforehand cushioning measure protects the fragile cover plate edge during both fabrication and subsequent usage, significantly improving reliability.
2Reliability
If the cover plate edge is positioned inside the display panel edge, then crack resistance is improved, but the cover plate provides less structural support and aesthetic appearance
Solution Approach 1:
The cover plate is designed with its edge positioned inside the display panel edge, creating a nested configuration where the cover plate edge is embedded within the boundary of the display panel. This nesting approach protects the cover plate edge from external impacts and fabrication errors while maintaining structural integrity and aesthetic appearance.
Solution Approach 2:
The protection layer is made of elastic material that provides both mechanical protection and structural support. This composite structure combines the cover plate with the elastic protection layer, maintaining the necessary structural support functionality while improving crack resistance and reliability.
3Reliability
If a protection layer is added to the cover plate edge, then crack resistance is improved, but the device complexity increases
Solution Approach 1:
The protection layer is implemented as a thin elastic film or shell that is simple in structure but effective in function. This thin film approach provides crack resistance and impact protection without significantly increasing the overall device complexity, as the layer can be easily integrated into the existing display module structure.
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 design prevents cracks in the cover plate during fabrication and enhances impact resistance, ensuring the display module's reliability and allowing for a narrow frame and large-screen display.
Implementation Method 1
The protection layer is attached to at least part of side edges of the first cover plate, and is elastic
Data Source
AI summary
A display module and a display device are provided. The display module includes a display panel, a first cover plate on a side of the display panel, and a protection layer. An edge of an orthographic projection of the first cover plate on a first plane is located inside an edge of an orthographic projection of the display panel on the first plane. The first plane is a plane where the display module is located. The protection layer is attached to at least part of side edges of the first cover plate, and is elastic.