Light-Responsive Bistable Screens for Circuit-Free Selective Erasure
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Solution Overview
Problem
Bistable display technologies like electronic ink screens and LCD handwriting boards require complex circuits for specific image display and selective erasure, leading to high costs and inefficiencies.
Innovation Solution
A light regulation and control screen comprising conductive structures, a light response structure that switches between conductive and non-conductive states under light irradiation, and a bistable display structure for selective erasure, eliminating the need for complex circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If complex circuits are designed to display specific images on electronic ink screens, then display functionality is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts the circuit control function and replaces it with a light response structure that automatically responds to light irradiation. The light response structure is disposed between the conductive structures and the bistable display structure, eliminating the need for complex driving circuits while maintaining display functionality.
Solution Approach 2:
The patent replaces the electrical control system (mechanical/electronic circuits) with an optical response system. The light response structure uses photoconductivity to automatically adjust electrical properties based on light irradiation, substituting complex electrical control with optical-field interaction.
2Adaptability or versatility
If complex circuit structures are designed to achieve selective erasure on LCD handwriting boards, then selective erasure capability is improved, but device complexity and cost increase
Solution Approach 1:
The patent removes the complex circuit structures required for selective erasure and replaces them with a light response structure that enables selective erasure through light irradiation. The light response structure selectively changes electrical properties in illuminated areas, allowing simple control of erasure regions.
Solution Approach 2:
The light response structure serves as an intermediary between light irradiation and the bistable display structure. It translates optical input into localized electrical property changes, enabling selective erasure without complex circuits. The light response structure mediates the interaction between external light sources and the display medium.
3Object-generated harmful factors
If traditional LCD display technology is used, then blue light emission occurs, but power consumption is high
Solution Approach 1:
The patent replaces the active light emission system (LCD backlight) with a passive light reflection system using bistable display structures. The display reflects ambient light rather than emitting blue light, eliminating harmful radiation while also reducing power consumption since no active illumination is required.
Solution Approach 2:
The bistable display structure uses the natural light environment to display information passively. It maintains display states without continuous power input, only consuming energy when state changes are needed. This self-service approach eliminates the need for constant power supply to maintain display visibility.
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 achieves low power consumption, fast response rates, high resolution, and selective erasure without additional sensing structures, facilitating large-scale manufacturing and wide applications.
Implementation Method 1
a light response structure, disposed between the first conductive structure and the second conductive structure, which is used to be in a non-conductive state in the absence of light irradiation and to be in a conductive state in the case of light irradiation, and the wavelength of light is 200 nm 2,000 nm
Data Source
AI summary
The present invention relates to a light regulation and control screen, its system and method thereof. The light regulation and control screen includes a first conductive structure, a second conductive structure, a light response structure disposed between the first and the second conductive structure, and a bistable display structure disposed between the first and the second conductive structure and located on one side of or inside the light response structure. The method has low power consumption and extremely fast response rate, by using the electrical property of the light response structure for color rendering and erasing. Only the area irradiated by light can be in a conductive state to realize a selective erasing, while other areas of the light response structure are still insulated. The present invention does not need complex circuit designs and additional sensing structures, and it is convenient for manufacturing large-size screens and promoting wide applications.