Graphene Releasing Layer for OLED Substrate Separation
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Solution Overview
Problem
The existing methods for manufacturing OLED displays face challenges in securely attaching and subsequently separating the display substrate from the support substrate without causing damage, particularly during the process of forming a thin glass substrate, which can lead to bending or warping issues.
Innovation Solution
A method involving the formation of a graphene releasing layer on the support substrate, followed by the deposition of a thin film substrate and the creation of pixels and an encapsulation member, allowing for easy separation using a laser beam generator or diamond wheel cutter, thereby preventing unwanted coupling and damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a thin glass substrate is used to make the OLED display slim, then the display thickness is reduced, but the substrate becomes prone to bending or warping during manufacturing
Solution Approach 1:
A releasing layer is introduced as an intermediary between the thin glass substrate and the support substrate. This releasing layer acts as a mediator that provides temporary support during manufacturing while enabling easy separation later, thus maintaining substrate stability without compromising the slim final product
2Ease of manufacture
If the support substrate is separated from the display substrate after manufacturing, then the display substrate can be removed, but the display substrate may be damaged or torn during separation
Solution Approach 1:
The releasing layer serves as a sacrificial intermediary that facilitates easy separation between the display substrate and support substrate. Its specific material properties allow it to be easily removed or separated without exerting damaging forces on the fragile thin glass substrate, thus maintaining substrate integrity during the separation process
Solution Approach 2:
The releasing layer is extracted as a separate, removable component between the support substrate and display substrate. This extracted intermediary layer can be easily removed after serving its support function, enabling clean separation without damaging the display substrate
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
This approach enables secure attachment and easy separation of the display substrate from the support substrate, reducing the risk of damage and maintaining structural integrity during high-temperature processes, while ensuring accurate formation of thin film components.
Implementation Method 1
The forming the releasing layer may include forming the graphene by reduction from graphene oxide
Implementation Method 2
The cutting the thin film substrate may be performed with a laser beam generator or a diamond wheel cutter
Data Source
AI summary
A method for manufacturing a display device includes forming a releasing layer including graphene on a support substrate, forming a thin film substrate on the releasing layer, forming pixels and an encapsulation member on the thin film substrate, and separating the releasing layer and the support substrate from the thin film substrate.