Transparent OLED Display Light Transmittance Optimization
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Solution Overview
Problem
Current transparent organic light emitting display apparatuses have low overall transmittance due to the limited light transmittance of individual components and small spaces between them, restricting the visibility of objects or images through the display when it is in a switch-off state.
Innovation Solution
The design incorporates a first and second transmitting unit, where the first transmitting unit is smaller and located inside pixels, and the second transmitting unit is larger and positioned between pixels, allowing for higher transmittance of external light and separation of emission and penetration regions to enhance visibility through the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If transparent display devices use thin film transistors, wiring lines, and organic light emitting devices in transparent form, then the display can show objects or images on the opposite side when in switch-off state, but the overall light transmittance remains low due to limited transmittance of individual components and small spaces between them
Solution Approach 1:
The display is divided into multiple regions: first display region with first transmitting units for high transmittance, and second display region with second transmitting units for lower transmittance. This segmentation allows different areas to serve different functions - some areas optimized for visibility while others maintain display functionality.
Solution Approach 2:
Different regions of the display have different transmittance characteristics. The first transmitting units in the first display region are designed with higher transmittance for better visibility, while the second transmitting units in the second display region have lower transmittance. This local differentiation resolves the contradiction by allowing high transmittance where needed without compromising overall display structure.
2Illumination intensity
If the display screen is made transparent to enable viewing of objects on the opposite side, then visibility is improved, but the transmittance of the whole display is limited by the transmittance of individual components
Solution Approach 1:
The display is segmented into first and second display regions with different transmittance characteristics. The first display region prioritizes external light transmittance for visibility, while the second display region maintains display functionality, allowing the system to balance both requirements.
Solution Approach 2:
The transmitting units are designed to serve multiple functions: they transmit external light for visibility while also being integrated with pixel structures for display functionality. The first and second transmitting units work together to provide both high transmittance and display capability in different regions.
Data Source
AI summary
An organic light emitting display apparatus that is transparent and in which transmittance of external light is high and transmittance is locally different. The organic light emitting display apparatus includes: a first region comprising a plurality of pixels for displaying an image, a first transmitting unit, and a second transmitting unit, the first and second transmitting units being for transmitting external light, and the first transmitting unit being formed smaller than the second transmitting unit; and a second region comprising a plurality of pixels for displaying an image and another first transmitting unit for transmitting external light.