Display Substrate Signal Routing for Camera Integration
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Solution Overview
Problem
The challenge in display apparatus design is to achieve a full-screen and narrow frame layout while accommodating camera devices, which typically require a frame position that obstructs the display screen, especially when the camera needs to be integrated into the display region.
Innovation Solution
A display substrate design that includes a base substrate with a first and second signal line, where the signal lines pass through a first opening region, providing display signals to a pixel array while minimizing the area occupied by the opening region, and utilizing a compensation capacitor structure to balance signal line loads across different pixel rows, thereby reducing display inconsistencies and frame width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the camera device is integrated into the display region, then the display region area is maximized, but the signal line layout becomes complex and display consistency deteriorates
Solution Approach 1:
The patent divides the display region into first and second display regions separated by the opening region, with signal lines independently routed through each region. This segmentation allows the camera integration to be isolated from the signal line routing complexity, maintaining display region area while managing layout complexity through regional separation.
Solution Approach 2:
The patent introduces a compensation capacitor structure that extends in the second direction (vertical) to compensate for signal line load differences in the first direction (horizontal). This dimensional approach resolves the layout complexity by adding a vertical compensation mechanism rather than attempting to simplify the horizontal routing.
2Area of stationary object
If the opening region area is reduced, then the display region area is maximized, but signal line load balance deteriorates and display inconsistency increases
Solution Approach 1:
The compensation capacitor acts as an intermediary element between the signal lines in different regions. It mediates the load imbalance caused by the opening region by providing additional capacitance to balance the signal line loads, thereby maintaining display consistency while minimizing the opening area.
Solution Approach 2:
The patent changes the electrical parameters (capacitance values) of the compensation capacitor to balance the signal line loads. By adjusting the capacitance parameter, the system compensates for the reduced display region area and maintains consistent signal transmission across different regions.
3Adaptability or versatility
If signal lines are routed through the opening peripheral region, then camera integration is enabled, but the frame width increases
Solution Approach 1:
The patent nests the camera device within the display region by routing signal lines through the opening peripheral region. This nesting approach allows the camera to be integrated without significantly increasing the frame width, as the signal lines are routed efficiently through the peripheral area rather than requiring additional horizontal space.
Data Source
AI summary
A display substrate and a display apparatus. In the display substrate, tat least one of the inter-opening region, the first opening peripheral region and the second opening peripheral region includes a dummy sub-pixel; the display region surrounds these three regions; the first signal line passes through the inter-opening region, provides a display signal to the pixel array and passes through the dummy sub-pixel; the dummy pixel circuit of the dummy sub-pixel includes a compensation capacitor. The first electrode plate of the compensation capacitor is in the same layer as the first signal line and electrically connected with the first signal line; the second electrode plate of the compensation capacitor is in a different layer from and at least partially overlaps with the first electrode plate.