Flexible Display Bending Perimeter Expansion via Linkage Mechanism
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Solution Overview
Problem
Conventional foldable display apparatuses are prone to damage or breakage in the folding region due to stress when folded or expanded, affecting the quality and reliability of the display.
Innovation Solution
A display apparatus design featuring a housing assembly with pivot connectors and linkages that allow the housings to rotate, increasing the distance between middle frames and thus the bending perimeter of the flexible display panel, thereby reducing stress and preventing damage during folding and expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flexible display panel is folded or expanded, then the portability and large panel requirements are met, but stress is generated in the folding region causing breakage or damage
Solution Approach 1:
The patent introduces a dynamic linkage mechanism with pivot connectors that allow the housing assembly to change its geometric configuration during folding. This dynamic structure adjusts the bending perimeter of the flexible display panel, increasing it during folding operations to reduce stress concentration and prevent breakage, while maintaining the desired portability and large panel capabilities
Solution Approach 2:
The patent changes the geometric parameters of the folding structure by using a four-bar linkage mechanism. The linkage modifies the bending radius and perimeter of the flexible display panel during folding, transforming the stress distribution parameters to prevent damage while enabling the display to meet both large panel and portability requirements
2Strength
If the housing assembly is made rigid for structural stability, then the overall strength is improved, but the folding region experiences higher stress and potential damage
Solution Approach 1:
The patent segments the housing assembly into multiple components connected by pivot connectors and linkages. This segmentation allows different parts of the housing to move independently during folding, distributing the stress away from the flexible display panel while maintaining overall structural strength and stability
Solution Approach 2:
The linkage mechanism acts as an intermediary between the rigid housing components and the flexible display panel. It mediates the folding motion by transforming the geometric relationship between housing parts, thereby reducing the direct stress transmitted to the flexible display panel while maintaining housing strength
Data Source
AI summary
The present application discloses a display apparatus including a housing assembly, a connecting frame plate, a linkage and a flexible display panel, the housing assembly includes a middle frame and a housing pin jointed to each other; the connection frame plate is provided with a pivot connector pin jointed to the housing; the linkage is pin jointed to the middle frame and the pivot connector, respectively; the flexible display panel is disposed on surface of the middle frame; wherein the middle frames is abut against the housings when the housings rotated to make a distance between the second terminals of the two middle frames is greater than a distance between the first terminals. The bending perimeter of a folding region of the flexible display panel is increased to release the stress to prevent the folding region broken or damaged when the display apparatus is folded or expanded.