Display Screen Pixel Layout for Under-Display Camera Transmittance
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Solution Overview
Problem
Existing display screens in full-screen mobile devices face issues with low light transmittance and severe diffraction, affecting the camera's imaging performance under the display screen.
Innovation Solution
A display screen design with a first display region of lower pixel density and a second display region of higher pixel density, where pixel driving units are arranged in a separate sub-region to avoid interference with light transmission, allowing for high light transmittance and improved utilization of pixel driving units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a camera is placed below a full-screen display screen to achieve full-screen display, then the display screen area is maximized, but light transmittance decreases and diffraction becomes severe, affecting imaging performance
Solution Approach 1:
The display screen is divided into two distinct regions: a first display region with lower pixel density optimized for light transmission and a second display region with higher pixel density optimized for display quality. This segmentation allows each region to serve its specific function, resolving the contradiction between full-screen area and light transmittance.
Solution Approach 2:
Different regions of the display screen are assigned different pixel densities according to their functional requirements. The first display region has lower pixel density to maximize light transmission for the camera, while the second display region has higher pixel density to maintain display quality. This local differentiation resolves the contradiction by optimizing each area for its specific purpose.
2Ease of operation
If pixel driving units are arranged in the first display region to drive first pixel units, then driving function is achieved, but light transmission is blocked and diffraction increases
Solution Approach 1:
The patent segments the display screen into functional zones: the first display region contains only pixel units without driving units to maintain light transmission, while the second display region contains both pixel units and driving units for complete driving function. This spatial segmentation resolves the contradiction by separating driving functions from light transmission paths.
Solution Approach 2:
The driving units are relocated from the first display region to the second display region, utilizing the vertical dimension (rows) to organize driving functions separately from pixel units. This dimensional reorganization allows light to pass through the first display region unobstructed while driving units in the second region maintain control functionality.
3Illumination intensity
If the first display region has low pixel density to improve light transmission, then light transmittance increases, but display quality decreases
Solution Approach 1:
The display screen is segmented into two regions with different pixel densities: the first display region uses lower pixel density to maximize light transmission for camera functionality, while the second display region uses higher pixel density to provide excellent display quality. This segmentation allows both requirements to be satisfied simultaneously in their respective regions.
Solution Approach 2:
Different pixel density characteristics are applied locally to different regions of the display screen based on functional requirements. The first display region has lower pixel density optimized for light transmission, while the second display region has higher pixel density optimized for visual quality, resolving the contradiction through localized optimization.
Data Source
AI summary
A display screen includes a first display area, which is provided with a first pixel unit array, and a second display area, which is provided with a second pixel unit array, wherein the pixel density of the first display area is less than that of the second display area, the first display area includes a first sub-area and a second sub-area, and the second sub-area is connected to the first sub-area and the second display area; and the display screen further includes a pixel driving unit array, which is arranged in the second sub-area, wherein each pixel driving unit respectively drives each first pixel unit, a first number of rows of pixel driving units are arranged corresponding to a second number of rows of first pixel units in a row extension direction, and the first number is greater than the second number. Also disclosed is an electronic device.