Segmented Flexible Display Window Bridge Design
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Solution Overview
Problem
Existing display devices with flexible displays face challenges in achieving improved bending performance and mechanism reliability, particularly in the window structure.
Innovation Solution
The display device incorporates a window design with a first flat panel part, a second flat panel part, and a first segment part that includes segments extended in a second direction intersecting the first direction and spaced apart, connected by bridges. The segments and bridges are made of the same material, and the bridges are thinner than the segments, with a thickness ranging from about 20 μm to about 50 μm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the window is made as a single continuous piece, then the structural strength is improved, but the bending performance deteriorates
Solution Approach 1:
The window is divided into multiple segments in the bending direction, with gaps between them allowing the window to flex during bending operations. This segmentation enables the window to accommodate the bending motion while maintaining overall structural integrity through the bridge connections.
Solution Approach 2:
Bridges are introduced as intermediary elements connecting the segments. These bridges transfer stresses between segments and provide structural support while allowing relative movement, thus resolving the contradiction between maintaining strength and enabling bending flexibility.
2Adaptability or versatility
If the window is segmented with gaps, then the bending performance is improved, but the mechanism reliability deteriorates
Solution Approach 1:
Bridges serve as intermediary connectors between segments, providing mechanical support and stress distribution. This ensures that the segmented structure maintains reliability by preventing excessive movement or misalignment of individual segments during bending operations.
Solution Approach 2:
The thickness of the bridges is optimized within a specific range (20-50 μm) to balance flexibility and strength. This parameter optimization ensures that the bridges are thin enough to allow bending while maintaining sufficient structural integrity for reliable operation.
3Adaptability or versatility
If the bridges are made thinner, then the bending flexibility is improved, but the structural strength deteriorates
Solution Approach 1:
The bridge thickness is optimized within a specific range (20-50 μm) to achieve the desired balance between flexibility and strength. This parameter optimization ensures that the bridges are thin enough to allow bending while maintaining sufficient structural integrity.
Solution Approach 2:
The window structure uses composite construction with segments and bridges made from the same material, creating a integrated structure that optimizes the strength-to-flexibility ratio. This composite approach allows the thinner bridges to maintain adequate strength through the material properties and structural design.
Data Source
AI summary
A display device includes a display panel; and a window disposed on an upper surface of the display panel, the window includes a first flat panel part; a second flat panel part disposed on a side of the first flat panel part in a first direction; and a first segment part disposed between the first flat panel part and the second flat panel part, the first segment part includes segments extended in a second direction intersecting the first direction and spaced apart from each other in the first direction; and bridges connecting both ends of each of the segments in the second direction, the segments and the bridges include a same material.