Transparent Display Silicon Solar Cell Energy Harvesting
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Solution Overview
Problem
Transparent display devices, particularly OLED displays, face challenges in achieving high transmittance and energy efficiency due to the non-transparent nature of their components, which limits their ability to integrate energy harvesting capabilities while maintaining display functionality.
Innovation Solution
Incorporating silicon solar cells in the light transmission areas of the display device, configured to absorb optical energy perpendicular to the light transmission direction and convert it into electric energy, which can be used to power the display or other components, thereby enhancing energy utilization and reducing the need for external power sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If silicon solar cells are disposed in light transmission areas to harvest energy, then energy efficiency is improved, but transmittance is reduced
Solution Approach 1:
The patent applies local quality by selectively disposing silicon solar cells in specific regions of the light transmission area rather than uniformly across the entire area. The solar cells are placed in regions where energy harvesting is prioritized, while other regions maintain full transparency. This spatial differentiation allows different parts of the same component to have different functions - some areas for energy conversion and others for light transmission - thereby resolving the contradiction between energy efficiency and transmittance.
2Adaptability or versatility
If non-transparent components are used in OLED displays, then display functionality is achieved, but energy harvesting capability is limited
Solution Approach 1:
The patent implements multi-functionality by integrating silicon solar cells into the light transmission areas of the OLED display, enabling the display structure to perform dual functions: maintaining its display capability while simultaneously harvesting energy from ambient light. The light transmission area serves both as a transparent region for viewing and as an active area for photovoltaic energy conversion, thus resolving the contradiction between display functionality and energy harvesting capability.
3Illumination intensity
If light transmission area is increased to improve transparency, then transmittance is improved, but energy harvesting area is reduced
Solution Approach 1:
The patent resolves this contradiction by applying local quality through selective functional zoning within the light transmission area. Instead of making the entire area uniformly transparent or uniformly active for energy harvesting, the patent designates specific sub-regions for solar cell integration while maintaining transparency in other sub-regions. This allows the overall light transmission area to be sufficiently large for transparency while containing localized zones optimized for energy harvesting.
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 integration of silicon solar cells in transparent display devices allows for improved transmittance and energy efficiency, enabling the device to harness ambient light energy while maintaining its display functionality, thus addressing the limitations of existing technologies.
Implementation Method 1
the silicon solar cell is configured to absorb optical energy in a direction perpendicular to the light transmission direction of the light transmission area and convert the optical energy into electric energy
Data Source
AI summary
Embodiments of the present invention relate to a transparent display device and a manufacturing method thereof. A display region of the transparent display device includes light a transmission area (12) and a light shield area (11). At least one silicon solar cell is disposed in a partial area of the light transmission area (12). The silicon solar cell is configured to absorb optical energy in the direction perpendicular to the light transmission direction of the light transmission area (12) and convert the optical energy into electric energy.