Solar Cell Integrated Display Device Power Consumption
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Solution Overview
Problem
Display devices face challenges in achieving low power consumption as screen sizes increase, particularly in mobile devices, where efficient energy use is crucial to prolong driving time without compromising image quality or panel durability.
Innovation Solution
Incorporating a solar cell with a conductive wire grid pattern layer and photoactive layers between light-transmissive substrates, which absorbs UV and IR light while transmitting visible light, allowing for energy harvesting and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a solar cell is incorporated into the display device to harvest energy from external light, then power consumption is reduced, but the device structure becomes more complex
Solution Approach 1:
The solar cell structure is merged with the display device structure by integrating the conductive wire grid pattern layer and photoactive layers between the light-transmissive substrates. This combination allows the solar cell to function as part of the display structure itself, reducing the need for separate energy harvesting components and minimizing overall device complexity while still achieving power consumption reduction through energy harvesting from external light
Solution Approach 2:
The conductive wire grid pattern layer serves dual functions: it acts as an electrode for the solar cell to harvest energy, and simultaneously functions as a polarizer for the display device. This multi-functionality reduces the number of separate components needed, addressing the complexity issue while maintaining the power consumption benefits of energy harvesting
2Reliability
If the photoactive layer absorbs UV and IR light to convert to energy, then panel deterioration is prevented and energy is harvested, but visible light transmission must be maintained for image quality
Solution Approach 1:
The photoactive layer is designed with spatially selective light absorption properties, absorbing UV and IR wavelengths while transmitting visible light wavelengths. This local quality differentiation in the photoactive layer's optical properties allows simultaneous achievement of panel protection from harmful radiation and maintenance of image quality through visible light transmission
Solution Approach 2:
The photoactive layer exhibits wavelength-selective transmission and absorption characteristics, effectively 'filtering' different portions of the electromagnetic spectrum. It absorbs harmful UV and IR radiation while allowing visible light to pass through, creating a selective optical property that protects the panel without compromising display visibility and image quality
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
This configuration enables lower power consumption by converting external light into energy, preventing panel deterioration and maintaining image quality by absorbing harmful light while allowing visible light transmission.
Implementation Method 1
a solar cell disposed between the first and second light-transmissive substrates... at least one photoactive layer, which is disposed between the transparent electrode and the conductive wire grid pattern layer
Implementation Method 2
the conductive wire grid pattern layer may include first partition walls, which are spaced from one another, may be configured to transmit a first polarized light therethrough while reflecting a second polarized light, which is perpendicular to the first polarized light
Data Source
AI summary
A display device comprises a first light-transmissive substrate, a second light-transmissive substrate and a solar cell disposed between the first and second light-transmissive substrates. The solar cell includes a conductive wire grid pattern layer, which is disposed between the first and second light-transmissive substrates, a transparent electrode, which is disposed between the second light-transmissive substrate and the conductive wire grid pattern layer, and at least one photoactive layer, which is disposed between the transparent electrode and the conductive wire grid pattern layer. The second light-transmissive substrate is configured to output an image therethrough.