Flexible Display Adhesive Protection Layer Design
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Solution Overview
Problem
Display devices face internal modifications due to adhesion of foreign substances or aggregation of pressure-sensitive adhesive (PSA) exposed on the outside, which can lead to functional issues and reduced durability.
Innovation Solution
A display device design featuring a flexible module with a first adhesive film, support plates, and protective layers, where the bonding forces between the anti-adhesive and adhesive protection layers are carefully managed to prevent adhesion, and the use of inorganic materials and specific molecular structures in the anti-adhesive layers to minimize adhesion with the support plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If PSA is exposed on the outside of the display device, then ease of manufacture is improved, but reliability deteriorates due to adhesion of foreign substances and aggregation of PSA
Solution Approach 1:
The patent introduces an adhesive protection layer as an intermediary between the exposed PSA and the external environment. This protection layer prevents foreign substances from adhering to the PSA while maintaining the manufacturing simplicity of having exposed adhesive edges. The protection layer acts as a mediator that resolves the conflict between ease of manufacture and reliability.
2Reliability
If adhesive protection layer is added to prevent PSA aggregation, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent uses a thin film adhesive protection layer to prevent PSA aggregation and foreign substance adhesion. This thin film approach improves reliability without significantly increasing device complexity, as the protection layer is integrated into the existing adhesive structure rather than being a separate bulky component.
3Reliability
If bonding force between anti-adhesive layer and support plate is increased, then reliability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent optimizes the bonding force parameters between the anti-adhesive layer and support plate to achieve reliable attachment without requiring excessive manufacturing precision. By carefully controlling the bonding force within a specific range, the patent resolves the contradiction between reliability and manufacturing precision requirements.
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
Prevents internal modifications and aggregation of PSA, enhancing the durability and reliability of the display device by reducing adhesion and maintaining a stable structure during folding and unfolding.
Implementation Method 1
the first anti-adhesive layer and the second anti-adhesive layer may include at least one of olefin, silicon, long-chain alkyl, and fluorine-based molecules
Implementation Method 2
a first adhesive film disposed on one surface of the flexible module
Data Source
AI summary
A display device includes a flexible module including a display panel displaying an image, a first adhesive film disposed on one surface of the flexible module, first and second support plates disposed on the first adhesive film, opposed to the flexible module, and spaced apart from each other, a first adhesive protection layer and a first anti-adhesive layer disposed between the first support plate and the first adhesive film and facing each other, and a second adhesive protection layer and a second anti-adhesive layer disposed between the second support plate and the first adhesive film and facing each other, where a first bonding force between the first anti-adhesive layer and the first support plate and a second bonding force between the first adhesive protection layer and the first adhesive film are larger than a third bonding force between the first adhesive protection layer and the first anti-adhesive layer.