Flexible Panel Bumps for Rollable Display Layer Separation
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Solution Overview
Problem
Existing rollable flexible display apparatuses suffer from damage due to contacts and scrubs between layers of the flexible panel when curled, leading to a shortened lifespan.
Innovation Solution
A display module design featuring bumps along the flexible panel's sides that fit into grooves of curled slide rails, allowing the panel to be curled and received in a single layer with spacing between adjacent layers, reducing contact and scrub issues, and utilizing elastic material bumps with low friction coefficients for smooth movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the flexible panel is curled in layers on the reel surface, then the panel can be compactly stored, but contacts and scrubs occur between layers causing damage and shortening lifespan
Solution Approach 1:
The patent introduces bumps as intermediary elements that engage with grooves in the reel surface. These bumps act as mediators between the flexible panel and the reel, preventing direct contact and friction between layered panels during curling and storage, thereby eliminating the harmful effects of layer-to-layer scrubs while maintaining compact storage capability
Solution Approach 2:
The patent segments the interaction interface by providing multiple bumps distributed along the flexible panel that engage with corresponding grooves. This segmentation distributes the mechanical interaction points, ensuring controlled single-layer curling through discrete engagement points rather than continuous layer contact
2Device complexity
If the flexible panel is curled without guidance structure, then the structure is simple, but the panel contacts itself in layers causing damage
Solution Approach 1:
The groove structure on the reel surface serves as an intermediary guidance element that passively controls the curling path. The bumps engage with these grooves to guide the panel through a controlled single-layer curling motion, preventing self-contact damage without requiring complex active control mechanisms
Solution Approach 2:
The patent employs curved groove paths on the reel surface that guide the bumps through a smooth arcuate motion during curling. This curvature-based guidance ensures the panel follows a controlled curved path that maintains single-layer formation, eliminating the need for complex mechanical guidance structures
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 solution effectively prevents damage by ensuring the flexible panel is curled in a single layer with reduced contact and scrubbing, extending the lifespan of the display apparatus and facilitating smooth operation.
Implementation Method 1
a material of the bumps has a friction coefficient of less than 0.5, and/or a material of the inner wall of the groove has a friction coefficient of less than 0.5
Data Source
AI summary
The present disclosure relate to a display module, comprising: a flexible panel, wherein bumps are formed along two opposing sides of the flexible panel respectively, and a size of the bumps in a thickness direction of the flexible panel is larger than a thickness of the flexible panel; two curled slide rails arranged opposite to and in parallel with each other, wherein each slide rail has a groove for receiving the bump that extends along a curling direction of the slide rail, and for each groove, a groove entry for entering the groove is formed at one end of a respective slide rail; the slide rails and a space therebetween form a receiving rail for receiving the flexible panel; each of the bumps is able to enter a respective groove of the slide rail through the groove entry of the groove and move along the groove where the bump resides.