Flexible Display Substrate Laser Peeling and Support
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Solution Overview
Problem
The manufacturing process of flexible display devices faces issues with substrate degradation and foreign substance adherence during the peeling process, leading to quality degradation of the display panel.
Innovation Solution
A method involving the formation of a sacrificial layer on a substrate, followed by the application of a flexible base material with a resin, and subsequent laser irradiation to reduce adhesion, allowing for controlled peeling of the substrate while maintaining the base material's integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the substrate is peeled after laser light irradiation to reduce adhesion, then the flexibility of the display panel is improved, but the quality of the display panel degrades due to substrate falling or foreign substance adherence
Solution Approach 1:
A support substrate is introduced before the peeling process to prevent substrate falling during conveyance. The support substrate is prepared in advance and positioned to receive the flexible substrate after peeling from the base material, ensuring the flexible substrate is supported throughout the entire process including the vulnerable transition period.
Solution Approach 2:
The support substrate acts as an intermediary between the flexible substrate and the handling system. It provides temporary mechanical support to the flexible substrate after peeling, preventing it from falling or adhering to foreign substances during conveyance, and can be removed later without affecting the final product quality.
2Adaptability or versatility
If the base material is peeled from the substrate, then the flexible display structure is achieved, but substrate falling occurs during the conveying process
Solution Approach 1:
The support substrate is prepared and positioned in advance to receive the flexible substrate immediately after peeling. This preliminary arrangement ensures continuous support during the critical transition period when the flexible substrate is most vulnerable to falling during conveyance.
3Ease of operation
If laser light irradiation is used to reduce adhesion, then the peeling process is enabled, but foreign substances adhere to the display panel
Solution Approach 1:
The support substrate is positioned in advance to receive the flexible substrate immediately after peeling. By providing continuous support during the transition from peeling to conveyance, it prevents the flexible substrate from contacting foreign substances in the environment, thereby preventing contamination while maintaining the effectiveness of the laser-assisted peeling process.
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 method prevents substrate falling and adherence of foreign substances, ensuring the quality and integrity of the display panel by creating a controlled peeling process that reduces adhesion between the substrate and base material.
Implementation Method 1
irradiating the substrate with laser light from a side of the substrate on which the base material is not formed
Implementation Method 2
the force of adhesion between the base material and the substrate is reduced by irradiation with laser light
Data Source
AI summary
A method of manufacturing a display device according to an embodiment of the present invention includes in order: forming a sacrificial layer in a predetermined position on a substrate; forming a base material containing resin on the substrate with the sacrificial layer therebetween; forming a display region including a plurality of pixels on the base material; irradiating the substrate with laser light from a side of the substrate on which the base material is not formed; and peeling the substrate from the base material. A region where the base material and the substrate are in contact with each other is present at least a part of an edge portion of the base material.