Display Substrate Signal Layout Around an Under-Display Camera
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Solution Overview
Problem
Existing display technologies face challenges in optimizing the layout of signal lines and pixel circuits to accommodate under-display cameras while maintaining display area size and signal transmission efficiency.
Innovation Solution
A display substrate design that includes a first display area surrounding a second display area, with signal lines partitioned by the second area and connected by connector lines, allowing for efficient signal transmission and space utilization, including the use of shielding traces to reduce interference and improve display uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the second display area is introduced for under-display camera, then the screen-to-body ratio is increased, but the signal line layout becomes more complex and signal transmission efficiency deteriorates
Solution Approach 1:
The first signal line is divided into multiple first sub-signal lines by the second display area, with each sub-signal line serving a specific region. The first connector line connects these sub-signal lines, creating a segmented signal transmission path that accommodates the under-display camera area while maintaining signal delivery to surrounding pixel circuits.
2Reliability
If the first connector line is arranged between pixel circuits, then signal transmission is maintained, but capacitance and interference increase
Solution Approach 1:
The first connector line acts as an intermediary element that connects the first sub-signal lines while being strategically positioned to minimize harmful effects. By placing the connector line in specific locations (overlapped with invalid pixel circuits or between valid pixel circuits), the design mediates between signal transmission requirements and interference minimization needs.
3Stability of the object's composition
If the second display area is surrounded by first display area, then display uniformity is improved, but manufacturing precision requirements increase
Solution Approach 1:
The design applies different characteristics to different regions: the first display area surrounding the second display area maintains uniform display properties, while the second display area itself has different characteristics suitable for under-display camera functionality. This local differentiation allows the first display area to serve as a stable reference for alignment and uniformity.
Data Source
AI summary
A display substrate includes a base substrate, multiple pixel circuits, multiple first light emitting elements, multiple second light emitting elements, and at least one first signal line extending along the first direction. The base substrate includes a first display area and at least one second display area. The first display area at least partially surrounds the second display area. A first signal line is located in the first display area, and is electrically connected with multiple pixels circuits of the first display area. The first signal line is partitioned into at least two first sub-signal lines by at least one second display area. Adjacent first sub-signal lines of the at least two first sub-signal lines are electrically connected by a first connector line. At least part of line segments of the first connector line are located between the multiple first pixel circuits.