Blurring Pixel Set for CUD Borderline Transition
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Solution Overview
Problem
The integration of a camera under display (CUD) device in mobile phones often results in a sharp borderline between the sensor and display regions, compromising visual display quality due to incomplete sub-pixel layouts and the expense of OLED materials.
Innovation Solution
A novel display device and method that employs a blurring pixel set with specific brightness values between the sensor and display pixel sets, adjusting gamma levels to create a smooth brightness gradient, thereby blurring the borderline and minimizing the visual presence of the CUD region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a camera is placed under the display panel (CUD structure), then the display area is increased and integration is improved, but a sharp borderline appears between the sensor region and display region, degrading visual display quality
Solution Approach 1:
A blurring pixel set is introduced as an intermediary region between the sensor pixel set and display pixel set. This intermediate layer with adjustable brightness values (BV=(1−Z)*SV+Z*DV) acts as a buffer that smooths the transition between regions with different brightness characteristics, eliminating the sharp borderline effect while preserving the CUD structure's space-saving benefits
Solution Approach 2:
Different regions of the display panel are assigned different brightness characteristics: the sensor pixel set maintains maximal brightness (SV) for sensor functionality, the display pixel set provides standard display brightness (DV), and the blurring pixel set in between is given a gradient brightness value that locally adapts to smooth transitions. This local differentiation resolves the contradiction by allowing each region to optimize for its specific function while the overall visual quality is maintained
2Adaptability or versatility
If an incomplete sub-pixel layout is used to accommodate the camera, then the camera can be hidden under the panel, but a contour issue with a sharp borderline appears, compromising visual quality
Solution Approach 1:
The blurring pixel set serves as a mediator that compensates for the visual discontinuity caused by the incomplete sub-pixel layout. By positioning this intermediate layer between the sensor and display regions, it masks the contour issues arising from the adapted pixel arrangement while maintaining both camera functionality and display quality
3Reliability
If pixels are cut off in the CUD area to facilitate camera function, then the camera operates properly, but a sharp visual difference appears at the borderline, degrading display quality
Solution Approach 1:
The blurring pixel set is positioned as an intermediary between the cut-off sensor pixels and the intact display pixels. This intermediate layer with gradient brightness values compensates for the visual discontinuity created by the pixel cut-offs, allowing the camera to function properly while maintaining visual display quality at the borderline
Data Source
AI summary
A display device includes a sensor pixel set having a maximal sensor pixel brightness value SV, a display pixel set having a display pixel brightness value DV, and a blurring pixel set disposed between the sensor pixel set and the display pixel set and having a blurring pixel brightness value BV. A minimal distance between the blurring pixel set and the sensor pixel set is Z and a minimal distance between the blurring pixel set and the display pixel set is (1−Z) to satisfy: BV=(1−Z)*SV+Z*DV.