Display Substrate Camera Region Data Line Routing
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Solution Overview
Problem
In display substrates with full-screen designs, the presence of data lines in the camera region can lead to dark vertical stripes due to excessive data loading, affecting display quality.
Innovation Solution
The display substrate design includes a base substrate with a first display region for normal display and a second display region for the camera, where data lines do not pass through the camera region, and third pixel circuits overlapping with data lines are insulated, reducing the number of connected pixel circuits and data loading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If data lines pass through the camera region (second display region) to connect with pixel circuits, then the screen-to-body ratio can be increased and full-screen display can be achieved, but dark vertical stripes appear due to excessive data loading on the data lines
Solution Approach 1:
The display region is segmented into a first display region (peripheral area) and a second display region (camera region). Data lines are configured to extend only in the first display region and do not pass through the second display region. This segmentation separates the data transmission path from the camera region, reducing data loading on individual lines while maintaining full-screen display capability.
Solution Approach 2:
The patent introduces a spatial dimension solution by arranging data lines to extend in a first direction within the first display region, and using adapt lines in a second direction within adapt regions. This multi-dimensional routing approach allows data to reach pixel circuits in the second display region without data lines passing through it, thereby reducing data loading while achieving uniform display.
2Illumination intensity
If the number of pixel circuits connected to each data line is reduced to decrease data loading, then dark vertical stripes are alleviated, but the circuit layout complexity increases
Solution Approach 1:
The circuit layout is segmented into functional regions: first display region, second display region, and adapt regions. Different types of lines (data lines, adapt lines, wiring) are assigned to different regions, simplifying the overall layout planning while reducing data loading on individual data lines.
Solution Approach 2:
Adapt lines serve as intermediary connections between data lines in the first display region and pixel circuits in the second display region. This intermediary structure allows data transmission without requiring data lines to pass through the camera region, reducing data loading while maintaining a systematic and manageable circuit layout.
3Illumination intensity
If data lines are arranged to not pass through the second display region, then data loading is reduced and display quality improves, but the routing path length increases
Solution Approach 1:
The patent uses multi-dimensional routing where data lines extend in a first direction within the first display region, and adapt lines connect to pixel circuits in the second display region through adapt regions. This approach optimizes the routing path length by utilizing available spatial dimensions rather than forcing data lines to take excessively long paths around the camera region.
Solution Approach 2:
Adapt regions are pre-configured adjacent to the second display region to facilitate efficient connections. By preparing these adapt regions in advance with appropriate adapt lines, the routing path length is minimized while still achieving the goal of preventing data lines from passing through the camera region.
Data Source
AI summary
A display substrate and a display apparatus are provided. The display substrate includes a first display region and a second display region; the first display region is located at a periphery of the second display region; the first display region includes first light-emitting elements, first pixel circuits, second pixel circuits, and third pixel circuits; the second display region includes second light-emitting elements; the second pixel circuits are connected with the second light-emitting elements; the third pixel circuit is a dummy pixel circuit. The display substrate further includes first data lines and second data lines, the first data lines are configured to be connected with the first pixel circuits, and the second data lines are configured to be connected with at least the second pixel circuits. Part of the third pixel circuits overlap with the second data lines are insulated from the second data lines.