Double-Sided Display Panel With Isolating Reflection Layer
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Solution Overview
Problem
Conventional double-sided display devices are bulky, heavy, and have independent display units, making it difficult to achieve a complementary display effect due to their large volume and thickness, and the display effect is limited by each individual unit.
Innovation Solution
A double-sided display panel with a simple structure, featuring a first and second substrate, a pair of electrodes, a color display unit with electrochromic material, a black-and-white display unit with electrolytic solution and charged particles, and an isolating reflection layer that allows ion permeation, enabling bistable and complementary displays on both sides without affecting each other.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two single-sided display panels are stuck together to form a double-sided display device, then double-sided display function is achieved, but the device volume and thickness become large
Solution Approach 1:
The patent merges two independent display panels into a single integrated double-sided display panel structure. The first and second display units are combined within one panel, sharing common substrates and electrolytic solution, eliminating the need for separate panels stuck together. This reduces device volume while maintaining double-sided display functionality.
Solution Approach 2:
The patent implements a nested structure where the first display unit and second display unit are embedded within the same panel structure. The first substrate and second substrate are positioned on opposite sides, with the electrolytic solution and functional layers nested between them, creating a compact integrated design that reduces overall device volume.
2Adaptability or versatility
If two single-sided display panels are stuck together to form a double-sided display device, then double-sided display function is achieved, but the device weight becomes large
Solution Approach 1:
The patent merges two independent display panels into a single integrated structure, eliminating the weight of separate panels, adhesives, and additional support structures. The combined design shares common components including substrates, electrolytic solution, and functional layers, significantly reducing overall device weight while maintaining double-sided display capability.
3Ease of manufacture
If each display unit is an independent member, then manufacturing is simplified, but the display effect cannot achieve complementary effect
Solution Approach 1:
The patent merges the first display unit and second display unit into an integrated structure where they share common substrates, electrolytic solution, and functional layers. This integration enables complementary display effects between the two sides while maintaining manufacturing efficiency through a unified fabrication process rather than assembling independent units.
Solution Approach 2:
The patent implements multi-functionality where the first substrate and second substrate serve multiple functions: as structural support, as electrodes, and as barriers. The electrolytic solution serves both the first display unit and second display unit simultaneously. This universal design achieves complementary display effects while simplifying manufacturing through reduced component count.
4Adaptability or versatility
If a traditional double-sided display structure is used, then double-sided display is achieved, but the device thickness becomes large
Solution Approach 1:
The patent implements a nested structure where the first display unit and second display unit are embedded within the same panel thickness. The first substrate and second substrate are positioned on opposite faces, with functional layers and electrolytic solution nested between them, creating a compact design that minimizes device thickness while enabling double-sided display.
Solution Approach 2:
The patent transitions from a three-dimensional stacked structure (separate panels) to a two-dimensional planar integration within a single panel. The first and second display units are arranged in opposite planes sharing common thickness, effectively reducing the thickness dimension while maintaining double-sided functionality.
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 solution allows for a thin, lightweight double-sided display device that achieves pure black and white displays, along with color displays, using shared electrodes and electrolytic ions, providing a better display effect and energy efficiency by eliminating the need for continuous power to switch images.
Implementation Method 1
the electrochromic material in the color display unit displays a color pattern by obtaining or losing electrons
Implementation Method 2
the isolating reflection layer has properties of allowing ions in the electrolytic solution to permeation
Implementation Method 3
the black particles and the white particles move in opposite directions to be far away from or close to the isolating reflection layer when the pair of electrodes in an energized state
Data Source
AI summary
A double-sided display panel and a double-sided display device are provided. The double-sided display panel includes a first substrate, a second substrate, a pair of electrodes, and a color display unit, an isolating reflection layer and a black-and-white display unit which are sequentially provided between the first substrate and the second substrate, wherein the color display unit includes an electrochromic material; the black-and-white display unit includes an electrolytic solution, and black particles and white particles having opposite charges dispersed in the electrolytic solution; the isolating reflection layer has properties of allowing ions in the electrolytic solution to permeation and reflecting light. The double-sided display panel has a simple structure and is easy for production, and displays on both sides do not affect each other and bistable display can be achieved.