Vacuum Stacking for Electrophoretic Display Manufacturing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electrophoretic display manufacturing processes face challenges in achieving high yield rates and reliability, particularly when transitioning to flexible substrates for lightweight and thin-thickness displays, which are essential for portable devices.
Innovation Solution
The method involves using a backside plate with a receiving cavity and absorption holes for vacuum absorption of the display structure, combined with a pressure-supplying member to stack the backside plate on the display structure, ensuring proper alignment and adhesion while minimizing air bubbles and improving manufacturing efficiency.
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 portability and thickness are improved, but the manufacturing yield rate and reliability deteriorate
Solution Approach 1:
The patent employs a flexible plate as the substrate to replace traditional glass, enabling lightweight and thin-thickness display construction while maintaining the structural integrity needed for portable devices
Solution Approach 2:
A backside plate with a receiving cavity is introduced as an intermediary component during the stacking process. This backside plate receives the display structure and facilitates controlled assembly, improving manufacturing yield and reliability while enabling the use of flexible substrates
2Manufacturing precision
If a backside plate with receiving cavity and absorption holes is used for vacuum absorption stacking, then the manufacturing precision and reliability are improved, but the device complexity increases
Solution Approach 1:
The patent utilizes vacuum absorption through holes in the backside plate to precisely position and hold the display structure during stacking. This pneumatic mechanism enables high manufacturing precision through controlled suction forces
Solution Approach 2:
The backside plate is designed with multiple discrete absorption holes distributed across its surface, allowing selective and precise positioning of the display structure. This segmentation enables controlled stacking while managing complexity through modular hole distribution
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 enhances the manufacturing yield and reliability of electrophoretic displays by ensuring precise stacking and reducing air bubbles, thereby facilitating the production of high-quality, lightweight, and thin-thickness displays suitable for portable devices.
Implementation Method 1
a plurality of absorption holes disposed on the bottom side of the receiving cavity to penetrate the main body, the absorption holes are used to absorb the display structure on the supporting surface via a vacuum absorption means
Data Source
AI summary
In an apparatus for manufacturing an electrophoretic display, the electrophoretic display includes a backside plate having a cover area and a display structure. The display structure is arranged on the backside plate and a rear surface thereof facing toward the backside plate has an area less than the cover area. The apparatus includes a main body and a pressure-supplying member. The main body includes a receiving cavity, a supporting surface and a plurality of absorption holes. The receiving cavity is configured to receive the display structure therein. The supporting surface is located at the bottom of the receiving cavity. The absorption holes are arranged at the bottom of the receiving cavity and each penetrates through the supporting surface. The absorption holes are configured to vacuum absorb the display structure on the supporting surface via vacuum absorption means. The pressure-supplying member is configured to apply a pressure onto the backside plate so as to stack the backside plate on the rear surface of the display structure. The present invention also provides a method for manufacturing an electrophoretic display.