OLED Display Panel Pixel Layout for Under-Panel Camera Diffraction
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Solution Overview
Problem
The camera under panel (CUP) technology in OLED screens experiences reduced imaging quality due to visible light diffraction caused by opaque areas like the anode, which affects the camera's performance.
Innovation Solution
The display panel is designed with a first display area having higher light transmittance than a second area, featuring a reduced number of larger subpixels and optimized pixel arrangements, including REAL RGB and SPR modes, to minimize diffraction effects while maintaining display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If OLED display units are disposed in the high-transparency area to improve visible light transmittance, then the display function is enhanced, but visible light diffraction occurs reducing imaging quality
Solution Approach 1:
The patent applies local quality by differentiating subpixel characteristics within the high-transparency area. Specifically, first subpixels in the first display area have larger areas than second subpixels in the second display area, creating localized optical properties that reduce diffraction while maintaining display functionality. This local differentiation allows the high-transparency area to optimize both transmittance and imaging quality.
2Object-affected harmful factors
If the number of subpixels is reduced in the first display area to minimize diffraction, then imaging quality improves, but display quality may be compromised
Solution Approach 1:
The patent employs parameter changes by adjusting subpixel area dimensions and arrangements. First subpixels are designed with larger areas compared to second subpixels, and specific area ratios are maintained between different subpixel types. These parameter optimizations allow reducing the total number of subpixels in the first display area while compensating through increased individual subpixel sizes, thereby maintaining display quality while minimizing diffraction.
3Manufacturing precision
If first subpixels have larger areas to compensate for reduced number, then display quality is maintained, but the overall light transmittance may be reduced
Solution Approach 1:
The patent utilizes composite material principles by combining different subpixel types (first subpixels with larger areas and second subpixels with smaller areas) in a unified display structure. The first display area comprises only first subpixels with optimized larger areas, while the second display area includes both first and second subpixels. This composite approach allows the system to maintain display quality through the larger first subpixels while preserving overall light transmittance through the strategic distribution of subpixel types across different display areas.
Data Source
AI summary
Display panels and display devices are provided. The display panel includes a first display area having a high light transmittance and a second display area having a low light transmittance. A light-emitting layer of the display panel includes first subpixels and second subpixels. In the first display area and the second display area having the same area, a number of the first subpixels located in the first display area is less than a number of the first subpixels located in the second display area, and a number of the second subpixels located in the first display area is equal to a number of the second subpixels located in the second display area.