Flexible Electrophoretic Display with Side Reinforcement
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Solution Overview
Problem
Current electrophoretic displays face challenges in manufacturing yield and reliability, particularly when transitioning to flexible designs, which are essential for lightweight and thinner portable devices.
Innovation Solution
A flexible electrophoretic display design featuring a backside plate with a larger cover area, a display structure with an electrophoretic layer and reinforcement, and additional top and bottom covers to enhance protection and structural integrity, along with a method for manufacturing that includes providing these components to improve 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 thinner design, then the weight and thickness are reduced, but the manufacturing yield and reliability deteriorate
Solution Approach 1:
The display device is segmented into multiple functional layers including a flexible substrate layer, display layer, and rigid support frame layer. This segmentation allows the flexible portion to maintain lightweight properties while the rigid frame provides structural stability and reliability, resolving the contradiction between weight reduction and reliability maintenance.
Solution Approach 2:
The invention employs composite material construction by combining flexible materials (for weight reduction) with rigid materials (for structural integrity). The flexible substrate is integrated with a rigid support frame, creating a composite structure that achieves both lightweight design and high reliability, thereby resolving the technical contradiction.
2Strength
If the backside plate area is increased to provide better support, then the structural integrity is improved, but the overall device area increases
Solution Approach 1:
Instead of uniformly increasing the entire backside plate area, the invention applies local reinforcement only in critical regions where structural support is needed. The rigid support frame is strategically positioned to provide maximum structural integrity with minimal area occupation, resolving the contradiction between strength improvement and area minimization.
Solution Approach 2:
The invention transitions from a two-dimensional area expansion approach to a three-dimensional structural solution by utilizing vertical framing elements and layered construction. This allows the device to achieve enhanced structural integrity through spatial configuration rather than simply increasing the planar area of the backside plate.
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 design increases manufacturing yield and improves the reliability of flexible electrophoretic displays, making them suitable for commercial production by providing enhanced protection and structural integrity through the use of a backside plate, side reinforcement, and covers.
Implementation Method 1
An electrophoretic display (EPD) is a reflective display apparatus based on utilizing electrophoretic effect of electrified particles dispersed in a dielectric solvent.
Data Source
AI summary
A flexible electrophoretic display includes a backside plate, a display structure and a side reinforcement. The backside plate has a cover area. The display structure is arranged on the backside plate and a surface thereof facing toward the backside plate has an area less than the cover area of the backside plate. The side reinforcement is arranged in juxtaposition with the display structure and on the backside plate. The present invention also provides a method for manufacturing a flexible electrophoretic display.