Organic Light Emitting Display Device with Adjustable Transmittance
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Solution Overview
Problem
Current organic light emitting display devices lack the ability to adjust transmittance, failing to meet user demands for customizable transparency.
Innovation Solution
Incorporation of a transmission sub-pixel within each pixel, which can selectively transmit or block external light based on an electrical signal, allowing for adjustable transmittance and enabling the display of both emission and transmission images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a transparent organic light emitting display device is used, then the display can transmit external light, but the transmittance is fixed and cannot be adjusted according to user demand
Solution Approach 1:
Each pixel is divided into multiple sub-pixels (first, second, third sub-pixels for different colors and a transmission sub-pixel). This segmentation allows the transmission function to be separated from the emission function, enabling independent control of transmittance while maintaining the display's emission capabilities. The transmission sub-pixel can be selectively activated to adjust overall transmittance without affecting the emission sub-pixels.
Solution Approach 2:
The display device achieves multi-functionality by integrating both emission and transmission capabilities within the same pixel structure. The transmission sub-pixel enables the display to function as both a traditional emissive display and a transparent display with adjustable transmittance, allowing a single device to serve multiple purposes and adapt to different usage scenarios.
2Adaptability or versatility
If transmission sub-pixel is added to enable adjustable transmittance, then transmittance control is achieved, but the number of sub-pixels per pixel increases
Solution Approach 1:
The pixel is segmented into distinct emission sub-pixels (first, second, third sub-pixels for different colors) and a transmission sub-pixel. This segmentation allows the transmission function to be independently controlled through the transmission sub-pixel, enabling transmittance adjustment without requiring complex modifications to the emission sub-pixels. The driving circuits can selectively activate or deactivate the transmission sub-pixel to control overall display transmittance.
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
Enables adjustable transmittance and improved white balance, color, and brightness by allowing users to control the display's transparency, enhancing the overall display performance.
Implementation Method 1
a transmission sub-pixel configured to selectively transmit external light in response to an electrical signal
Data Source
AI summary
An organic light emitting display device includes a plurality of pixels, each of the plurality of pixels including: a first sub-pixel configured to emit light of a first color; a second sub-pixel configured to emit light of a second color that is different from the first color; a third sub-pixel configured to emit light of a third color that is different from the first and second colors; and a transmission sub-pixel configured to selectively transmit external light in response to an electrical signal.