Solar-Driven Display Panel with MEMS Optical Valve
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Solution Overview
Problem
Conventional liquid crystal display devices rely on external electricity, leading to energy consumption and environmental pollution, necessitating a display solution that utilizes clean solar energy and eliminates liquid crystal materials.
Innovation Solution
A display panel comprising an array substrate with display units, each including a solar cell for photoelectric transformation and a micro-electromechanical optical valve to control light transmittance, allowing the panel to be driven by solar energy and eliminating the need for liquid crystals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If liquid crystal materials are used in display devices, then display function is achieved, but environmental pollution and material waste occur
Solution Approach 1:
The patent extracts and removes liquid crystal materials from the display device structure, replacing them with a micro-electromechanical optical valve system that uses movable mirrors to control light reflection, thereby eliminating the harmful environmental factors associated with liquid crystal materials while maintaining the display function
Solution Approach 2:
The patent replaces the liquid crystal optical modulation mechanism with a mechanical system consisting of micro-electromechanical optical valves with movable mirrors that control light through physical reflection, substituting the liquid crystal material-based optical system with a mechanics-based approach
2Use of energy by moving object
If external electricity is used to drive display panels, then display operation is enabled, but energy consumption increases
Solution Approach 1:
The patent merges the display function with the power generation function by integrating solar cells directly into the display panel structure, allowing the same device to both generate electricity from sunlight and use that electricity to drive the display operation, thereby reducing external energy consumption
Solution Approach 2:
The patent implements multi-functionality by enabling the display panel to serve dual purposes: generating electrical energy through solar cells and displaying images through the optical valve system, allowing one device to perform multiple functions that previously required separate systems
3Power
If solar cells are integrated into display units, then photoelectric transformation is achieved, but light transmittance is reduced
Solution Approach 1:
The patent employs dynamic control through movable micro-electromechanical optical valves that can adjust their position to selectively block or allow light passage, enabling the system to dynamically balance between photoelectric transformation efficiency and light transmittance requirements for different display needs
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 enables energy-efficient display operation using solar energy, reducing environmental impact and conserving conventional energy by harnessing sunlight for both display and charging purposes.
Implementation Method 1
a solar cell disposed adjacent to the display sub-pixel and configured to receive sunlight radiation and perform photoelectric transformation
Data Source
AI summary
A display panel includes an array substrate, and a plurality of display units disposed on the array substrate each of which includes a display sub-pixel for receiving sunlight radiation and performing display, a solar cell disposed adjacent to the display sub-pixel and configured to receive sunlight radiation and perform photoelectric transformation, a micro-electromechanical optical valve disposed above and movable over the display sub-pixel and the solar cell to control a light transmittance of the display sub-pixel, and a blocking structure disposed at an edge of the display unit to limit the movement of the micro-electromechanical optical valve within the display unit.