Display Panel Power Line Segmentation for Under-Screen Camera Regions
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Solution Overview
Problem
Display panels with under-screen cameras face low light transmittance in low PPI regions, affecting the display effect of the camera imaging region.
Innovation Solution
The display panel optimizes the signal lines in the low PPI region by rearranging conductive lines of the meshed first power supply line, reducing direct connections and optimizing their arrangement to enhance light transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display panel uses a conventional meshed power supply line structure in the low PPI region, then the electrical connectivity is ensured, but the light transmittance is reduced
Solution Approach 1:
The power supply line is segmented into multiple separate conductive lines (first conductive lines extending from second display region to first display region, second conductive lines located between adjacent first conductive lines, and third conductive lines extending in intersecting directions) rather than forming a continuous meshed structure. This segmentation reduces the overall conductive material presence in the low PPI region, thereby improving light transmittance while maintaining electrical connectivity through the distributed network of conductive lines.
Solution Approach 2:
The patent introduces conductive lines extending in multiple directions (first direction and second direction that intersects with the first direction), creating a three-dimensional routing architecture. This multi-dimensional arrangement allows power supply signals to reach pixel circuits through alternative paths, maintaining electrical connectivity while reducing the density of conductive lines in any single plane, thus improving light transmittance in the low PPI region.
2Adaptability or versatility
If the density of pixel units is reduced in the first display region to support under-screen camera, then the camera imaging function is enabled, but the display resolution is compromised
Solution Approach 1:
The display panel implements different pixel unit densities in different regions: the first display region has a lower density of pixel units to accommodate the under-screen camera and allow sufficient light transmittance, while the second display region maintains a higher density for normal display functionality. This local differentiation allows the panel to simultaneously support camera imaging and display resolution requirements through region-specific optimization.
Solution Approach 2:
The patent creates a dynamic display structure where the first display region can function as either a display area with reduced pixel density or as a camera imaging region with high light transmittance, while the second display region provides consistent high-resolution display. The system dynamically adapts its functionality based on operational mode, allowing the same physical structure to serve multiple purposes without compromising overall performance.
Data Source
Figure 1A~1B
Figure 1C~2
Figure 3~4
AI summary
A display panel and a display device, the display panel comprising: a first display region; a second display region, at least partially positioned on one side of the first display region; a plurality of pixel units, the density of pixel units in the first display region being less than the density of pixel units in the second display region, and the pixel units comprising pixel circuits; and first power supply lines, configured to supply a first voltage signal to the pixel circuits. The first power supply lines comprise a plurality of first wires, a plurality of second wires, and a plurality of third wires, the first wires extending from the second display region to the first display region, the plurality of second wires being positioned in the first display region, positioned between adjacent first wires, and extending in a first direction, and the third wires extending along a second direction, the first direction intersecting with the second direction. The third wires extend from the second display region to the first display region, and adjacent second wires are spaced apart in the first direction. The second wires being connected to the first wires by means of the third wires.