RGBW Pixel Arrangement Brightness Resolution Trade-off
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Solution Overview
Problem
Conventional OLED display panels face issues with low brightness and reduced resolution due to their pixel arrangements, which affect the display quality.
Innovation Solution
A pixel arrangement that includes green, red, and blue sub-pixels, along with white sub-pixels, where the white sub-pixels are strategically placed to increase brightness without compromising resolution, and the arrangement supports pixel rendering and white sharing mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If white sub-pixels are added to each pixel unit (forming RGBW arrangement), then brightness is improved, but resolution is reduced
Solution Approach 1:
The patent transitions from a planar 2D pixel arrangement to a 3D stacked arrangement where color conversion layers are vertically positioned above sub-pixels. This dimensional change allows white sub-pixels to contribute to brightness while color conversion layers maintain the effective resolution by converting light in the vertical dimension rather than requiring additional horizontal space.
Solution Approach 2:
Color conversion layers act as intermediaries between the white sub-pixels and the viewer. These layers convert the white light from sub-pixels into specific colors (red, green, blue, yellow), allowing the white sub-pixels to provide brightness while the color conversion layers maintain the color information and effective resolution.
2Manufacturing precision
If conventional RGB pixel arrangement is used, then resolution is maintained, but brightness is insufficient
Solution Approach 1:
The white sub-pixels serve multiple functions: they provide high brightness output and serve as a light source for the color conversion layers. This multi-functionality allows the display to achieve high brightness directly from white sub-pixels while also enabling color information to be generated through the color conversion layers, thus maintaining resolution.
Solution Approach 2:
The patent changes the operational parameters by introducing white sub-pixels that emit broad-spectrum light, then uses color conversion layers to selectively convert wavelengths. This parameter change in light emission and conversion allows simultaneous achievement of high brightness (from white sub-pixels) and high resolution (through selective color conversion).
Data Source
AI summary
A pixel arrangement of color display panel includes a plurality of white sub-pixels extending along a first direction and forming a plurality of white sub-pixel columns and a plurality of first sub-pixels, second sub-pixels and third sub-pixels disposed between the white sub-pixel columns to respectively provide a first color light, a second color light and a third color light. The first, second, third and white sub-pixels respectively have a first length, a second length, a third length and a fourth length in the first direction. The first sub-pixels, the second sub-pixels and the third sub-pixels are arranged in a specific sequence. The first length is equal to the second length, the second length is equal to the third length, and the fourth length is greater than the first length.