Novel Sub-pixel Configuration for Display Brightness and Power
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Solution Overview
Problem
High-resolution display panels face challenges in achieving balanced brightness and aperture ratio, leading to increased power consumption and potential abnormal display issues like white borders due to excessive enhancement of brightness in specific regions.
Innovation Solution
A display device with a novel sub-pixel configuration that adjusts the arrangement of white sub-pixels to disperse them relative to other colors, ensuring the area of polygons formed by adjacent white sub-pixels is at least twice as large as those formed by other colors, thereby preventing excessive brightness enhancement and improving display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the resolution of display panel is increased, then the image quality is improved, but the aperture ratio is reduced and power consumption is increased
Solution Approach 1:
The patent applies local quality by differentiating the treatment of sub-pixels based on their location and color. White sub-pixels are strategically positioned and sized differently from color sub-pixels (R, G, B) to optimize local light transmission. The white sub-pixels have larger areas and are positioned to specifically enhance grayscale regions, while color sub-pixels maintain their original sizes for pure color regions, creating non-uniform local properties across the display panel.
Solution Approach 2:
The patent changes the parameters of white sub-pixels specifically - increasing their area relative to color sub-pixels and adjusting their positions within the pixel array. This parameter modification allows white sub-pixels to contribute more to overall brightness without proportionally increasing the area of all sub-pixels, thereby improving aperture ratio efficiency and reducing power consumption requirements.
2Illumination intensity
If the brightness of grayscale regions is enhanced by white sub-pixels, then the transmittance is improved, but the brightness of pure color regions is not improved and abnormal display occurs
Solution Approach 1:
The patent implements local quality by assigning different functions to white sub-pixels versus color sub-pixels. White sub-pixels are optimized for grayscale regions with larger areas and specific positioning to enhance transmittance where needed, while color sub-pixels (R, G, B) maintain their original characteristics for pure color display. This localized differentiation ensures that brightness enhancement is applied selectively to grayscale regions without adversely affecting pure color regions.
Solution Approach 2:
The patent applies partial action by having white sub-pixels specifically target grayscale regions for brightness enhancement rather than uniformly enhancing all regions. The white sub-pixels are positioned and sized to provide enhanced transmittance where grayscale display is needed, while deliberately limiting their influence on pure color regions to prevent abnormal display effects like white borders.
3Illumination intensity
If the area of white sub-pixels is increased to improve transmittance, then the brightness is enhanced, but the aperture ratio is reduced
Solution Approach 1:
The patent applies local quality by increasing the area of white sub-pixels specifically in regions where transmittance enhancement is beneficial for grayscale display, while maintaining the original area of color sub-pixels. This localized area increase allows white sub-pixels to improve backlight transmittance and brightness without proportionally reducing the overall aperture ratio, as the color sub-pixels retain their area for pure color display.
Solution Approach 2:
The patent changes the area parameter selectively for white sub-pixels, making them larger than color sub-pixels. This parameter modification improves backlight transmittance and brightness performance while the overall aperture ratio is managed by maintaining appropriate sizes for color sub-pixels, achieving a balance between transmittance enhancement and aperture ratio preservation.
Data Source
AI summary
A display device including a plurality of sub-pixel arrays is provided. Each of sub-pixel arrays includes a plurality of first sub-pixels, at least one second sub-pixel and at least one third sub-pixel. The first sub-pixels have a first color and form a plurality of vertexes of a virtual quadrilateral. There is not any other first sub-pixels having the first color located in the virtual quadrilateral. The second sub-pixel has a second color different from the first color and is located in the virtual quadrilateral. The third sub-pixel has a third color different from the first color and the second color and is located in the virtual quadrilateral.