Display Substrate Pixel Layout for Under-Screen Camera Transmittance
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Solution Overview
Problem
The main technical difficulty in under-screen camera design for OLED displays is the low light transmittance, which adversely affects the imaging quality of cameras placed under the screen.
Innovation Solution
A display substrate is designed with a first display region having a lower sub-pixel density and a second display region with higher sub-pixel density, utilizing pixel arrangements of real GRB and GGRB respectively, and incorporating light-shielding layers to enhance light transmittance and maintain high display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sub-pixel density is increased to improve display resolution, then the display quality is improved, but the light transmittance is reduced
Solution Approach 1:
The patent applies different sub-pixel arrangements to different regions of the display. The first display region uses a real GRB arrangement with lower density for high light transmittance, while the second display region uses a GGRB arrangement with higher density for high resolution. This local differentiation resolves the contradiction by allowing each region to optimize for its specific function.
Solution Approach 2:
The display is segmented into two distinct regions with different pixel densities and arrangements. The first display region is segmented for camera functionality with reduced pixel density, while the second display region is segmented for high-quality display with increased pixel density. This segmentation allows simultaneous optimization of both light transmittance and display resolution in different areas.
2Illumination intensity
If the sub-pixel density is reduced to increase light transmittance, then the light transmittance is improved, but the display resolution is reduced
Solution Approach 1:
Different regions of the display are assigned different quality levels. The first display region has lower sub-pixel density optimized for light transmittance, while the second display region has higher sub-pixel density optimized for display resolution. This local quality differentiation allows the system to achieve high light transmittance where needed without sacrificing overall display quality.
Solution Approach 2:
The display is divided into segments with different functional priorities. The first display region is segmented for maximum light transmission to the under-screen camera, while the second display region is segmented for high-resolution display output. This functional segmentation resolves the contradiction by distributing different performance requirements to different spatial zones.
3Duration of action of stationary object
If the green sub-pixel luminous area is increased to extend service life, then the service life is improved, but the pixel density is reduced
Solution Approach 1:
The green sub-pixels in the first display region are designed with larger luminous areas compared to conventional designs. This local enhancement of green sub-pixel size in the low-density region extends their service life without requiring increased density across the entire display, thus resolving the contradiction between service life and pixel density.
Data Source
AI summary
Disclosed are a display substrate and a display device. The display substrate includes a plurality of sub-pixels. The density of sub-pixels of a first display region is less than that of a second display region; the plurality of sub-pixels includes a plurality of first pixel groups and a plurality of second pixel groups, the plurality of first pixel groups are located in the first display region, the plurality of second pixel groups are located in the second display region, the first display region includes a plurality of sub-display regions and a sub-light-transmitting region, each of the first pixel groups includes a first sub-pixel, a second sub-pixel, and a third sub-pixel, each of the second pixel groups includes a first sub-pixel, a second sub-pixel pair, and a third sub-pixel arranged along a first direction, and the second sub-pixel pair includes two second sub-pixels arranged along a second direction.