Display Substrate Layout for Under-Display Camera Uniformity
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Solution Overview
Problem
In display technologies, offscreen cameras compromise the visual and usage experience by requiring lower resolution in display regions with cameras, affecting the overall screen-to-body ratio and display effect.
Innovation Solution
A display substrate design with a first display region of higher light transmittance and a second display region of lower transmittance, featuring first and second pixel circuits and light emitting devices, where the density of light emitting devices in both regions is matched, and drive circuit layers with data lines and shift register units are strategically arranged to maintain uniformity and improve display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If offscreen cameras are placed in the display region, then the screen-to-body ratio is improved, but the resolution and display effect in the camera region deteriorate
Solution Approach 1:
The display region is divided into a first display region (without camera) and a second display region (with camera). Different pixel circuit configurations are used in each region to maintain uniform light transmittance characteristics, thereby preserving display quality while enabling offscreen camera placement.
Solution Approach 2:
Different pixel circuit designs are applied to different regions: the first pixel circuits in the non-camera region and second pixel circuits in the camera region. This local differentiation allows each region to be optimized for its specific function while maintaining overall display uniformity.
2Adaptability or versatility
If the light transmittance of the first display region is increased to accommodate camera, then the camera functionality is improved, but the display brightness and visibility in that region deteriorate
Solution Approach 1:
The light transmittance parameters of the pixel circuits are carefully controlled and matched between the first and second display regions. By adjusting and equalizing the light transmittance characteristics, the display maintains uniform brightness and visibility across both regions while accommodating the offscreen camera.
3Use of energy by moving object
If the density of light emitting devices is reduced in the first display region to improve light transmittance, then the camera performance is improved, but the display resolution in that region deteriorates
Solution Approach 1:
The display is segmented into two regions with different pixel circuit configurations. The first pixel circuits in the non-camera region and second pixel circuits in the camera region are designed with matched light transmittance, allowing the first display region to maintain high resolution while achieving sufficient light transmittance for camera operation.
Solution Approach 2:
The light transmittance parameters of different pixel circuit types are optimized and matched to ensure uniform display characteristics across regions with different functional requirements, maintaining both resolution and camera performance.
Data Source
AI summary
Disclosure provides a display substrate, a display panel and a display device. The display substrate includes a substrate, a drive circuit layer and a light emitting device layer sequentially on the substrate, a display region of the substrate includes first and second display regions on a side of the first display region, light transmittance of the first display region is larger than that of the second display region; the drive circuit layer includes first pixel circuits in bezel region around the display region, second pixel circuits in the second display region; the light emitting device layer includes first light emitting devices, second light emitting devices; each first light emitting device is electrically connected with each first pixel circuit; each second light emitting device is electrically connected with each second pixel circuits; a density of the first light emitting devices is same as a density of the second light emitting devices.