RGBW Display Panel Layout to Eliminate White-Light Color Separation
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Solution Overview
Problem
Full-color LED displays suffer from color separation due to non-uniform mixing of red, green, and blue LED chips, which is exacerbated when viewed up close, and existing solutions to improve mixing, such as total reflection or scattering layers, complicate the display structure and increase thickness.
Innovation Solution
A color display panel with pixel units comprising red, green, blue, and white sub-pixel units, where white light is achieved through a single white sub-pixel unit, and a control method to turn on/off sub-pixel units based on input signal values to avoid color separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If red, green, and blue LED chips are used to generate white light through mixing, then color gamut and brightness are improved, but color separation occurs due to non-uniform light mixing
Solution Approach 1:
The pixel unit is segmented into four independent sub-pixel units (red, green, blue, and white), allowing the white sub-pixel unit to emit white light directly while the RGB sub-pixel units emit their respective colors. This segmentation eliminates the need to mix RGB lights to produce white, thereby preventing color separation while maintaining color gamut and brightness.
2Object-affected harmful factors
If total reflection or scattering layers are added to improve light mixing, then color separation is reduced, but device complexity and thickness increase
Solution Approach 1:
The invention extracts the white light generation function from the RGB mixing process by introducing a dedicated white sub-pixel unit. This eliminates the need for total reflection or scattering layers to achieve uniform white light mixing, thereby reducing device complexity and thickness while preventing color separation.
3Object-affected harmful factors
If total reflection or scattering layers are added to improve light mixing, then color separation is reduced, but panel thickness increases
Solution Approach 1:
The invention extracts the white light generation function from the RGB mixing process by introducing a dedicated white sub-pixel unit. This eliminates the need for total reflection or scattering layers to achieve uniform white light mixing, thereby reducing device complexity and thickness while preventing color separation.
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 alleviates color separation and improves display quality without increasing panel thickness, facilitating maintenance and reducing complexity.
Implementation Method 1
white light of the color display panel is achieved through the white sub-pixel unit
Data Source
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AI summary
A color display panel and a control method thereof are provided. The color display panel includes pixel units arranged in an array, and each pixel unit at least includes a red sub-pixel unit, a green sub-pixel unit, a blue sub-pixel unit, and a white sub-pixel unit, where white light of the color display panel is achieved through the white sub-pixel unit. With aid of the above, the white light of the color display panel of the disclosure is realized by a single white sub-pixel unit, which can effectively alleviate color separation during mixing of red, green, and blue light of traditional display panels, and greatly improve the display effect of the display panel.