Display Substrate Signal Routing Around Under-Display Camera Areas
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Solution Overview
Problem
Existing display technologies face challenges in efficiently integrating under-display cameras without compromising the size of the display area and ensuring effective signal transmission and uniformity.
Innovation Solution
A display substrate design with a first display area surrounding a second display area, utilizing connector lines to connect signal lines and bypassing the second display area, while incorporating invalid pixel circuits to optimize space utilization and signal connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal lines are routed through the second display area to connect pixel circuits, then signal transmission is achieved, but the display area size is reduced and display uniformity is compromised
Solution Approach 1:
The first display area is segmented into a first region and a second region divided by the second display area. Signal lines are separately routed in these regions, with the first signal line in the first region and the second signal line in the second region, allowing independent optimization of each path without compromising the overall display area.
Solution Approach 2:
The second display area acts as an intermediary element that separates the first and second display regions. Instead of routing signal lines directly through the camera area, the patent uses connector lines that bypass the second display area, mediating the connection between pixel circuits while preserving display uniformity and area.
2Stability of the object's composition
If connector lines are used to bypass the second display area, then display uniformity is improved, but signal line complexity increases
Solution Approach 1:
The signal transmission path is segmented into multiple sections: the first signal line in the first region, the connector line bypassing the second display area, and the second signal line in the second region. This segmentation allows each component to be optimized independently, maintaining display uniformity while managing complexity through modular design.
Solution Approach 2:
The connector line extends in the first direction (horizontal) to bypass the second display area, while the second display area itself is arranged in the second direction (vertical). This dimensional arrangement allows the connector line to route around the camera area without increasing vertical complexity, maintaining a compact overall structure.
3Reliability
If the first signal line is partitioned into multiple sub-signal lines by the second display area, then signal transmission paths are established, but capacitance and interference increase
Solution Approach 1:
The connector line serves as an intermediary element that bridges the first and second sub-signal lines without requiring direct continuity through the second display area. This intermediary connection reduces capacitance by minimizing the overlapping area between signal lines and reduces electromagnetic interference by separating the signal paths around the camera area.
Solution Approach 2:
The harmful effect of routing signal lines directly through the second display area is extracted and removed. Instead, the connector line extracts the necessary connection function while eliminating the capacitance and interference problems that would arise from direct routing through the camera area.
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.