Laser Separation of Flexible Electrophoretic Displays
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Solution Overview
Problem
Current electrophoretic display manufacturing processes face challenges in achieving high yield rates and reliability, particularly when transitioning to lightweight and thin-thickness flexible displays, which are essential for portable devices.
Innovation Solution
A method and apparatus that involve using a flexible plate with an electrophoretic layer and a transparent protection layer, where a laser is used to separate the substrate from the flexible plate without damaging it, and an edge protection member surrounds the electrophoretic layer to enhance reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a flexible plate is used to replace the glass substrate to achieve lightweight and thin-thickness electrophoretic displays, then the weight and thickness are reduced, but the manufacturing yield rate and reliability deteriorate
Solution Approach 1:
The patent divides the manufacturing process into distinct stages: forming the flexible plate with electrodes on the glass substrate, assembling the electrophoretic layer and protection layer, and finally separating the flexible plate from the substrate using laser irradiation. This segmentation allows each component to be optimized independently while maintaining overall reliability.
Solution Approach 2:
The glass substrate serves as an intermediary carrier during manufacturing, providing a stable platform for forming the flexible plate structure. The laser irradiation acts as an intermediary separation mechanism that cleanly detaches the flexible plate without damaging it, thereby maintaining high manufacturing yield and reliability.
2Length of stationary object
If a flexible plate is used to replace the glass substrate to achieve lightweight and thin-thickness electrophoretic displays, then the thickness is reduced, but the manufacturing yield rate and reliability deteriorate
Solution Approach 1:
The patent segments the manufacturing process into controlled stages, allowing the flexible plate to be formed with precise thickness control on the substrate, then separated cleanly using laser irradiation. This ensures thin-thickness achievement without compromising manufacturing reliability.
Solution Approach 2:
The patent replaces mechanical separation methods with laser irradiation for separating the flexible plate from the substrate. This non-contact separation method prevents mechanical damage to the thin flexible plate, thereby maintaining high manufacturing yield rate and reliability while achieving reduced thickness.
3Manufacturing precision
If laser irradiation is used to separate the substrate from the flexible plate, then the flexible plate is not damaged and manufacturing quality increases, but the process complexity increases
Solution Approach 1:
The laser irradiation serves as an intermediary separation mechanism that cleanly detaches the flexible plate from the substrate without mechanical contact. This intermediary approach achieves high manufacturing quality by preventing damage, while the laser system can be integrated into existing production lines with minimal added complexity.
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 increases manufacturing quality and reliability of electrophoretic displays, enabling the production of high-quality, lightweight products suitable for commercial use.
Implementation Method 1
providing a laser to irradiate the flexible plate from a side of the substrate without the flexible plate being disposed, so as to separate the substrate from the flexible plate
Data Source
AI summary
A method for manufacturing an electrophoretic display includes the steps of: providing a substrate; forming a flexible plate on the substrate; forming an electrophoretic layer on the flexible plate; forming a transparent protection layer on the electrophoretic layer; forming an edge protection member between the flexible plate and the transparent protection member, the edge protection member surrounding the electrophoretic layer; and providing a laser beam to irradiate the flexible plate from a side of the substrate facing away from flexible plate, so as to release the substrate from the flexible plate.