Flexible Display Support Bar Bonding for Stable Scrolling
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Solution Overview
Problem
Existing flexible display apparatuses face issues with jamming and misalignment of support bars due to compression deformation of the adhesive layer during scrolling, leading to instability and reduced display performance.
Innovation Solution
A display module design featuring a structured adhesive layer with multiple first portions and connection segments that align with support bars, reducing deformation and peeling, and a rotating shaft to drive bending, ensuring stable scrolling and improved bonding between support layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the adhesive layer is made as a continuous layer to ensure strong bonding, then the bonding strength between support layers is improved, but the adhesive layer is more prone to peeling and deformation when the bendable portion is scrolled
Solution Approach 1:
The adhesive layer is divided into multiple discrete adhesive portions arranged in an array, each portion independently bonding the first and second support layers. This segmentation prevents continuous stress distribution that causes peeling, while maintaining sufficient total bonding area. The gaps between adhesive portions allow the structure to flex and deform without causing the adhesive layer to peel during scrolling operations.
2Strength
If the adhesive layer area is increased to improve bonding, then the bonding strength is improved, but the area subjected to compression and deformation during scrolling is increased, leading to more peeling
Solution Approach 1:
The adhesive layer is segmented into discrete portions with gaps between them, reducing the continuous area subjected to compression and deformation during scrolling. This segmentation allows the adhesive portions to maintain bonding strength while being less susceptible to peeling forces generated during flexing and scrolling operations.
Solution Approach 2:
The adhesive portions are strategically positioned to provide bonding strength where needed, while leaving gaps in regions that would otherwise be subjected to high compression and deformation during scrolling. This local quality approach optimizes the balance between bonding strength and resistance to scrolling-induced peeling.
Data Source
AI summary
A display module includes a display panel, a first support layer, a second support layer and an adhesive layer. The display panel includes a bendable portion. The second support layer includes a plurality of support bars arranged at intervals, and there is a first gap between two adjacent support bars in the plurality of support bars. The adhesive layer includes a plurality of first portions arranged at intervals and a connection portion. There is a second gap between two adjacent first portions in the plurality of first portions. The second gap is communicated with the first gap. The connection portion connects the plurality of first portions, so that the plurality of first portions are connected by the connection portion.