RGBW Display Yellow Light Skin-Color Saturation
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Solution Overview
Problem
Conventional RGBW display devices exhibit insufficient saturation and luminance when displaying skin-color images due to the reduced size of red, green, and blue sub pixel units compared to RGB display devices.
Innovation Solution
A display device with a light source module including a white and yellow light source, and a skin-color detector that adjusts the luminance of the yellow light source based on the skin-color area proportion and chroma distribution in the image signal to enhance saturation and luminance of skin-color images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If the sizes of red, green, and blue sub pixel units are reduced in RGBW display device, then the backlight transmittance is increased and backlight power consumption is reduced, but the saturation and luminance of skin-color images become insufficient
Solution Approach 1:
The patent introduces a yellow light source that can be dynamically activated based on the detected skin-color area proportion. When skin-color content is detected, the yellow light source is turned on to enhance luminance specifically for skin-color regions, while maintaining reduced blue sub pixel sizes for overall power savings. This dynamic parameter adjustment resolves the contradiction between power consumption and skin-color luminance.
Solution Approach 2:
The system uses a skin-color detector to automatically detect skin-color areas and autonomously control the yellow light source activation. The display device self-adjusts its luminance output based on content analysis, eliminating the need for manual intervention while optimizing both power consumption and skin-color image quality.
2Use of energy by moving object
If the sizes of red, green, and blue sub pixel units are reduced in RGBW display device, then the backlight transmittance is increased, but the saturation of skin-color images becomes insufficient
Solution Approach 1:
The patent dynamically adjusts the yellow light source intensity based on the skin-color area proportion detected. When skin-color content is present, the yellow light source is activated to enhance saturation in those specific regions, while maintaining the reduced blue sub pixel configuration for high backlight transmittance. This selective parameter adjustment resolves the contradiction between transmittance and skin-color saturation.
Solution Approach 2:
The system applies different lighting conditions to different regions of the display based on content analysis. The yellow light source is selectively activated only in regions containing skin-color content, while other regions continue to use the standard RGBW configuration. This localized quality adjustment maintains high transmittance overall while enhancing saturation where needed.
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 solution effectively improves the saturation and luminance of skin-color images by dynamically controlling the yellow light source in conjunction with the white light source, ensuring better color representation on RGBW display devices.
Implementation Method 1
the light source module includes a white light source and a yellow light source distributed in the white light source
Implementation Method 2
the skin-color detector detects the skin-color area proportion of an image signal of the display panel
Data Source
AI summary
A display device includes a display panel, a light source module and a skin-color detector. The display panel has a plurality of sub pixel units, and the sub pixel units include red sub pixel units, green sub pixel units, blue sub pixel units and white sub pixel units. The light source module is disposed at a side of the display panel and the light source module includes a white light source and a yellow light source distributed in the white light source. The skin-color detector is electrically connected to the display panel, wherein the skin-color detector detects the skin-color area proportion of an image signal of the display panel.