Integrated Solar Cell Display Panel with Selective Reflection
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Solution Overview
Problem
The lifespan and weight reduction of batteries in light emitting display apparatuses are critical issues, particularly in portable electronic devices, necessitating a more efficient power supply solution.
Innovation Solution
Integration of a solar cell into the light emitting display panel, combined with a selective reflecting metal structure that reflects specific color light for display while transmitting others to generate power, allowing self-sustenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a solar cell is integrated into the light emitting display panel, then power generation capability is improved, but device complexity increases
Solution Approach 1:
The patent merges the solar cell with the light emitting display panel by integrating the solar cell into the non-display area of the panel. The solar cell is positioned on the same substrate with the display pixels, allowing simultaneous light absorption for power generation and light emission for display functions. This merging approach enables the device to generate power while maintaining display functionality without requiring separate independent systems.
Solution Approach 2:
The integrated panel structure provides multi-functionality by combining display and power generation capabilities in a single device. The solar cell in the non-display area captures ambient light to generate electrical power that charges the battery, while the display area renders visual output. This universal design allows the same physical structure to serve both as a display device and a power generation system.
2Use of energy by moving object
If the solar cell area is increased to generate more power, then power generation capability is improved, but display area is reduced
Solution Approach 1:
The patent segments the panel into distinct functional zones: a display area for visual output and a non-display area for power generation. By separating these functions spatially, the solar cell can occupy the non-display area without compromising the display area size. This segmentation allows both functions to operate simultaneously with optimal area allocation.
Solution Approach 2:
The patent resolves the area conflict by utilizing the vertical dimension through transparency. The solar cell is designed with transparent or translucent characteristics, allowing light to pass through it while still enabling power generation. This dimensional approach allows the solar cell to occupy space without completely blocking light for the display area, effectively decoupling the horizontal area trade-off.
3Duration of action of moving object
If a battery with longer lifespan is used, then duration of action is improved, but weight increases
Solution Approach 1:
The patent implements self-service by integrating a solar cell that automatically charges the battery using ambient light during device operation. The solar cell converts light energy to electrical energy to replenish the battery without requiring external charging infrastructure. This self-charging mechanism extends battery lifespan effectively while avoiding the need for larger heavier batteries, as the battery is continuously maintained during normal device use.
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
Enhances battery life by generating power from ambient light, reducing reliance on external charging and improving display luminance.
Implementation Method 1
a solar cell on the planarization layer
Implementation Method 2
a selective reflecting metal in the insulation layer, the selective reflecting metal including at least three metal layers
Data Source
AI summary
A light emitting display apparatus is presented herein in which a solar cell is integrated into a light emitting display panel. The light emitting display apparatus comprising a pixel driving circuit layer including a plurality of pixel driving circuits; a planarization layer that covers the pixel driving circuit layer; a solar cell on the planarization layer; an insulation layer on the solar cell; a selective reflecting metal in the insulation layer, the selective reflecting metal including at least three metal layers; and a plurality of light emitting devices on the insulation layer.