Three-Zone Display Substrate Layout for Under-Screen Imaging
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Solution Overview
Problem
Existing electronic devices with notched screens for front-facing cameras and sensors cannot achieve full-screen display due to the notched area being non-displayable, and external light can enter photosensitive elements, affecting display consistency and user experience.
Innovation Solution
A display substrate with distinct areas of varying light transmittance, including a high-transmittance first area for accommodating photosensitive components, and a structured arrangement of pixel circuits and signal lines to simplify wiring and reduce diffraction effects, enabling full-screen display while maintaining component functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a notched area is created on the display screen to accommodate front-facing camera and photosensitive elements, then these components can be integrated, but the notched area cannot display images and external light can enter the photosensitive elements, affecting display consistency
Solution Approach 1:
The pixel circuits corresponding to the first display area are extracted and relocated to the third display area, separating the display function from the circuit control function in the first display area. This enables the first display area to achieve full light transmittance for photosensitive component operation while maintaining display capability through the third area's circuits
Solution Approach 2:
The patent transitions from a traditional single-display-area layout to a multi-dimensional display structure with first, second, and third display areas arranged in different spatial zones. The pixel circuits are relocated to the third area, creating a three-zone spatial arrangement that resolves the conflict between light transmittance and display functionality
2Reliability
If pixel circuits are arranged in the first display area to drive sub-pixels, then display functionality is achieved, but light transmittance is reduced and structural complexity increases
Solution Approach 1:
The pixel circuits are extracted from the first display area and relocated to the third display area, removing the obstacle to light transmittance while preserving display functionality through electrical connection via signal lines
Solution Approach 2:
The display area is segmented into three distinct zones: first display area for high light transmittance with sub-pixels, second display area as transition zone, and third display area for pixel circuits. This segmentation allows each zone to optimize its specific function without compromising others
3Reliability
If complex wiring is used to connect pixel circuits and signal lines in the first display area, then sub-pixels can be driven, but wiring complexity and diffraction effects increase
Solution Approach 1:
The pixel circuits are extracted from the first display area and placed in the third display area, eliminating the need for complex internal wiring within the first area and reducing diffraction effects from dense signal line arrangements
Solution Approach 2:
The third display area serves as an intermediary zone that houses pixel circuits and provides a buffer region for signal line routing. This intermediary arrangement simplifies the wiring structure by separating high-voltage signal lines from low-voltage signal lines and reducing the density of interconnections in the first display area
Data Source
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AI summary
The application provides display substrates, display panels, and display devices. A display substrate includes a display area including a first display area, a second display area, and a third display area disposed between the two display areas, light transmittance of first display area being greater than that of second display area, and that of third display area. Sub-pixels are disposed in the three display areas, pixel circuits corresponding to the sub-pixels one to one, pixel circuits corresponding to sub-pixels in first display area are arranged in third display area. Signal lines are provided in the display area, pixel circuits corresponding to sub-pixels arranged along a first direction in display area are connected to a same one of the signal lines. At least one of the signal lines simultaneously connected with pixel circuits corresponding to sub-pixels in first display area, sub-pixels in second display area, and sub-pixels in third display area.