Resin Stress Absorption Layer for Flexible OLED Electrode Integrity
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Solution Overview
Problem
Conventional flexible organic light emitting diode display devices suffer from electrode breakage due to stress when bent, affecting display quality.
Innovation Solution
A stress absorption layer made of resin material is introduced between the second electrode and the second flexible substrate, with protruding structures to effectively absorb and release stress, preventing electrode breakage and enhancing display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If electrodes are made of metallic materials in a flexible display device, then electrical conductivity is improved, but the electrodes break under stress when the device is bent
Solution Approach 1:
A stress absorption layer made of resin material is introduced between the second electrode and the second flexible substrate. This intermediary layer absorbs and releases stress during bending, preventing the metallic electrode from breaking while maintaining electrical conductivity.
Solution Approach 2:
The stress absorption layer is positioned beforehand between the electrode and the flexible substrate to cushion and absorb stress before it can reach and break the electrode during bending operations.
2Ease of operation
If the display device is made flexible to improve portability, then ease of operation is improved, but stress breaks the electrodes
Solution Approach 1:
The resin-based stress absorption layer serves as a mediator between the flexible substrate and the rigid electrode, allowing the device to maintain flexibility for portability while protecting the electrode from stress-induced breakage.
Solution Approach 2:
The stress absorption layer changes its mechanical properties (absorbing and releasing stress) in response to bending, allowing the device to be flexible during operation while maintaining electrode integrity.
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 stress absorption layer effectively absorbs and releases stress as the device bends, preventing electrode damage and improving display quality by maintaining flexibility and performance.
Implementation Method 1
a stress absorption layer is disposed between the second electrode and the second flexible substrate... the stress from the second flexible substrate that occurs as the flexible organic light emitting diode display device is bent is absorbed and released
Data Source
AI summary
A flexible organic light emitting diode display device, comprising: a first flexible substrate and a second flexible substrate opposite to the first flexible substrate wherein on the first flexible substrate, there are formed in sequence a thin film transistor, a first passivation layer, a first electrode, an organic electroluminescence layer, a second electrode, a stress absorption layer is disposed between the second electrode and the second flexible substrate, and material for the stress absorption layer is a resin material. The stress absorption layer of the flexible organic light emitting diode display device can absorb a stress occurring as it is bent, so as to prevent electrodes from being broken due to the action of the stress and affecting the display quality. There is further disclosed a manufacturing method of the flexible organic light emitting diode display device.