Display Device Color-Weakness Compensation Using Quantum Dot Sub-Pixels
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Solution Overview
Problem
Display devices fail to effectively compensate for color vision deficiencies, such as dyschromatopsia, in users, limiting their ability to perceive colors accurately, especially in environments where color differentiation is crucial.
Innovation Solution
A display device incorporating a color-weakness judging unit that generates color vision deficiency data using algorithms like the D-15 panel test or pseudoisochromatic plates test, and a color-weakness compensating unit that adjusts pixel emissions based on this data using quantum dot light-emitting layers to enhance color reproduction and brightness for users with color vision deficiencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional display devices are used, then the display structure is simple, but users with color vision deficiencies cannot perceive colors accurately
Solution Approach 1:
Each pixel is divided into three sub-pixels (first, second, and third sub-pixels) with different light-emitting characteristics. The first and second sub-pixels have controllable light-emitting colors, while the third sub-pixel has a predetermined light-emitting color. This segmentation allows independent control of color components to compensate for color vision deficiencies.
Solution Approach 2:
The display device applies different compensation strategies to different color components locally. The color control light-emitting layer adjusts its emission characteristics based on the detected color vision deficiency type, while the third sub-pixel maintains fixed characteristics. This local differentiation enables precise color compensation for users with color vision deficiencies.
2Manufacturing precision
If quantum dot light-emitting layers are used to enhance color reproduction, then color purity and brightness are improved, but manufacturing complexity increases
Solution Approach 1:
The display device employs quantum dot light-emitting layers as the color control light-emitting layer in the first and second sub-pixels. These quantum dots provide superior color purity and brightness enhancement. The composite structure combines quantum dots with organic light-emitting materials to achieve both high color reproduction accuracy and controlled emission characteristics.
3Reliability
If color compensation algorithms are implemented, then color vision deficiency compensation is improved, but processing complexity increases
Solution Approach 1:
The display device performs preliminary detection of color vision deficiency type using test algorithms (D-15 panel test or pseudoisochromatic plates test) before displaying content. The detected deficiency type is stored and used to pre-configured compensation parameters, eliminating the need for real-time complex calculations during normal operation.
Solution Approach 2:
The display device incorporates a feedback mechanism where user responses to color perception tests are analyzed to determine color vision deficiency type. This feedback information is then used to adjust the compensation parameters for the quantum dot light-emitting layers, creating a closed-loop system that optimizes color presentation for each user's specific deficiency.
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 device enables users with color vision deficiencies to perceive colors more accurately by compensating image data based on their specific vision deficiency type, improving color reproduction and brightness without limiting the lifespan of the display.
Implementation Method 1
a color control light-emitting layer formed on the electron transport region... the color control light-emitting layer is a quantum dot light-emitting layer... the color control electrode applies an electric field to the color control light-emitting layer to control the light-emitting color of the color control light-emitting layer
Implementation Method 2
The second electrode is an electric field transmissive electrode... the color control electrode applies an electric field to the color control light-emitting layer
Data Source
AI summary
A display device is disclosed. In one aspect, the display device includes an image source configured to generate image data comprising red, green, and blue data and a color-weakness determiner configured to generate color vision deficiency data comprising color-weakness information. The device also includes a color-weakness compensator configured to generate compensation data based on the image data and the color vision deficiency data and a display portion comprising a plurality of pixels each configured to emit light based on the compensation data. Each of the pixels includes first and second sub-pixels configured to emit light having a light-emitting color based on an electric field applied to the first or second sub-pixel and a third sub-pixel configured to emit light having a predetermined light-emitting color.