Three-Part Support Backplane for Foldable and Rollable Displays
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Solution Overview
Problem
Existing flexible display screens face challenges in efficiently adjusting the size of the display area based on user needs, particularly in foldable devices, due to limitations in structural design that affect durability and user experience.
Innovation Solution
A support backplane with a three-part structure comprising a first support portion with a rollable flexible structure, a second support portion with a foldable structure, and a third support portion that can be slidably rolled, allowing for adjustable display area size through folding and rolling mechanisms, enhanced by metal support strips and a flexible connection layer for improved deformability and support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a foldable screen structure is used to enable flexible display, then the display area size can be adjusted, but the structural durability and reliability deteriorate due to frequent folding and rolling
Solution Approach 1:
The backplane is divided into three independent support portions (first, second, and third support portions), each with specific rollable flexible structures. This segmentation allows the display to be folded and rolled in different configurations while distributing mechanical stress across separate structural units, thereby maintaining durability during size adjustments.
Solution Approach 2:
The patent employs rollable flexible structures with multiple support strips arranged in parallel, creating a flexible yet durable framework. These flexible structures enable the backplane to bend and roll smoothly while maintaining structural integrity, solving the contradiction between adaptability and reliability.
2Reliability
If multiple support strips are arranged to enhance structural support, then the durability improves, but the device complexity increases
Solution Approach 1:
Multiple support strips are merged into a single integrated rollable flexible structure that functions as one cohesive unit. The support strips are arranged in parallel and work together to provide combined structural support, achieving enhanced durability without requiring separate complex mechanisms for each support element.
Solution Approach 2:
The rollable flexible structure with multiple support strips serves multiple functions simultaneously: it provides structural support, enables folding and rolling movements, and maintains the flat surface configuration. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity.
Data Source
AI summary
A support backplane includes a first support portion, a second support portion, and a third support portion connected in sequence. The first support portion has a first rollable flexible structure in a first area, and the first area is a partial area of the first support portion. The second support portion has a second rollable flexible structure in a second area, and the second area is a partial area of the second support portion. The second rollable flexible structure is matched with the first rollable flexible structure, so as to constitute a foldable structure in the first area and the second area. The third support portion has a third rollable flexible structure in an entire area of the third support portion, so that the third support portion constitutes a slidably rolled structure that is able to be unfolded or rolled up.