Under-Screen Camera Display Panel With Gradient Pixel Transition
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Solution Overview
Problem
Existing display panels with camera under panel (CUP) designs face challenges in maintaining high transmittance and resolution, resulting in noticeable differences in the boundary between the CUP region and the normal display region, affecting aesthetics and image quality.
Innovation Solution
A display panel with distinct sub-pixel density and pixel arrangements in different areas, including a main display area, a transitional annular area, and a CUP area, where the sub-pixel density decreases gradually, transforming from an RGB to an RG/BG arrangement to increase light transmittance while maintaining the same pixels per inch (PPI) across regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the sub-pixel density in the CUP region is reduced to increase light transmittance, then the transmittance of the CUP region is improved, but the resolution of the CUP region deteriorates
Solution Approach 1:
The patent applies different pixel arrangements to different regions: the first display area uses RGB arrangement for high resolution, the second display area uses RGB arrangement near the first display area boundary and RG/BG arrangement near the third display area boundary, and the third display area (CUP region) uses RG/BG arrangement. This local differentiation allows each region to have optimized properties for its specific function.
Solution Approach 2:
The display area is segmented into three distinct regions (first display area, second display area, third display area) with different sub-pixel densities and arrangements. The second display area acts as a transitional zone that gradually changes the sub-pixel density from the first to the third area, avoiding abrupt transitions and maintaining overall display quality.
2Illumination intensity
If the sub-pixel density in the CUP region is reduced to increase light transmittance, then the transmittance of the CUP region is improved, but the uniformity of the boundary between CUP region and normal display region deteriorates
Solution Approach 1:
The second display area implements a dynamic transition in pixel arrangement, changing from RGB near the first display area boundary to RG/BG near the third display area boundary. This dynamic adaptation allows the display to maintain visual uniformity across the boundary while enabling high transmittance in the CUP region.
Solution Approach 2:
The second display area serves as an intermediary transition zone between the first display area (high density RGB) and the third display area (lower density RG/BG). This intermediate region with its gradient pixel arrangement smooths the transition and eliminates noticeable boundaries.
3Illumination intensity
If the pixel arrangement is transformed from RGB to RG/BG in the second display area, then the light transmittance of the second display area is increased, but the number of pixels in the second display area is reduced
Solution Approach 1:
The patent changes the pixel arrangement parameter from RGB (3 sub-pixels per pixel) to RG/BG (2.67 sub-pixels per pixel on average) in the second and third display areas. This parameter change reduces the number of sub-pixels required, increasing light transmittance while the sub-pixel rendering technology compensates to maintain perceived resolution.
Data Source
AI summary
A display device, comprising: a housing, a display panel and an under-screen camera. The display panel comprises a first display area (201), a second display area (202) and a third display area (203). The second display area (202) is arranged between the first display area (201) and the third display area (203). The sub-pixel density of the first display area (201) is greater than the sub-pixel density of the second display area (202), and the sub-pixel density of the second display area (202) is greater than the sub-pixel density of the third display area (203). The pixel PPI of the first display area (201) is equal to the pixel PPI of the second display area (202), and the pixel PPI of the second display area (202) is greater than or equal to the pixel PPI of the third display area (203). The pixels in the first display area (201) are arranged in an RGB arrangement. The pixel arrangement of the second display area (202) comprises RGB arrangement and RG/BG arrangement. The pixels of the third display area (203) are arranged in an RG/BG arrangement. The under-screen camera is arranged below the third display area (203) of the display panel.