Flexible Display Panel Connection Units with Release Agent Films
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing flexible display technologies face challenges in maintaining display consistency and reliability when stretched due to stress concentration and damage from adhesive layers during manufacturing processes, which limits their tensile properties and production yield.
Innovation Solution
A flexible display panel design featuring a stretchable base film with an adhesive layer, first and second release agent films, and a flexible substrate with display and connection units, where the release agent films prevent bonding between connection units and the adhesive layer, allowing for increased freedom and reducing stress concentration, thereby enhancing stretch reliability and simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If connection units are directly bonded to the adhesive layer, then manufacturing process is simplified, but stress concentration and damage occur during stretching
Solution Approach 1:
A release agent film is introduced as an intermediary layer between the connection units and the adhesive layer. This film prevents direct bonding while allowing controlled separation, eliminating stress concentration on connection units during stretching while maintaining manufacturing simplicity.
Solution Approach 2:
The adhesive layer is segmented into two functional zones: regions with release agent films covering connection units (preventing bonding) and regions without release agent films covering display units (enabling bonding). This segmentation allows differential treatment of different areas during the manufacturing and stretching processes.
2Ease of manufacture
If adhesive layer is applied uniformly across the substrate, then bonding is simplified, but connection units suffer from stress concentration and damage
Solution Approach 1:
The release agent film is applied locally only in regions corresponding to connection units, while display units remain without the film. This local application creates different surface properties in different areas: connection units have non-stick surfaces while display units have sticky surfaces, enabling selective bonding behavior.
3Strength
If connection units are constrained by the adhesive layer, then structural integrity is improved, but tensile properties and stretchability are reduced
Solution Approach 1:
The release agent film serves as a mediator that provides structural support through the adhesive layer while preventing stress transfer to connection units. During stretching, the film allows connection units to move freely without being constrained by adhesive bonding, thereby maintaining both structural integrity and tensile properties.
Data Source
AI summary
A flexible display panel includes: a stretchable base film; an adhesive layer disposed on a surface of the stretchable base film; a flexible substrate including a plurality of display units and a plurality of connection units, every two adjacent display units being connected by at least one connection unit; and a plurality of first release agent films disposed between the plurality of connection units and the adhesive layer, the plurality of first release agent films and the plurality of connection units being in one-to-one correspondence. An orthographic projection of each connection unit on the stretchable base film is within an orthographic projection of a corresponding first release agent film on the stretchable base film. The plurality of display units are bonded to the adhesive layer.