Display Panel Power-Line Mesh for Under-Screen Camera Transmittance
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Solution Overview
Problem
Display panels with under-screen cameras suffer from low light transmittance in low PPI regions, which affects the display effect of the camera imaging region.
Innovation Solution
The display panel optimizes the conductive lines of the power supply lines in the low PPI region by rearranging them into a meshed structure with specific arrangements and connections, including perpendicular and spaced conductive lines, to improve light transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a meshed power supply line structure is used in the low PPI region, then the wiring coverage is increased, but the light transmittance is reduced
Solution Approach 1:
The power supply line is segmented into first conductive lines extending in a first direction and second conductive lines extending in a second direction (intersecting with the first direction). This segmentation allows the wiring to be distributed more efficiently, reducing the overall coverage area while maintaining electrical connectivity to all pixel units in the low PPI region.
Solution Approach 2:
The patent introduces a two-dimensional grid structure using conductive lines extending in intersecting directions (first direction and second direction). This dimensional approach allows power supply lines to reach pixel units without requiring extensive coverage in a single direction, thereby reducing overall wiring area while maintaining light transmittance.
2Illumination intensity
If conductive lines are arranged to extend from the high PPI region to the low PPI region, then the light transmittance is improved, but the wiring complexity is increased
Solution Approach 1:
The first and second conductive lines serve multiple functions: they provide power supply to pixel units, defines display regions (high PPI and low PPI regions), and enable the under-screen camera function. This multi-functionality reduces the need for separate dedicated structures, thereby simplifying overall wiring complexity despite the extended coverage.
3Area of stationary object
If the density of pixel units is reduced in the first display region, then the area coverage is increased, but the display quality is degraded
Solution Approach 1:
The display panel employs different pixel unit densities in different regions: a first display region with lower density for ambient light transmission and a second display region with higher density for primary display content. This local quality differentiation allows each region to be optimized for its specific function, maintaining overall display quality while enabling ambient light passage for the under-screen camera.
Data Source
AI summary
A display panel and a display device are provided. The display panel includes: a first display region; a second display region; pixel units, each pixel unit including a pixel circuit; and a first power supply line, the first power supply line includes first conductive lines, second conductive lines, and third conductive lines, each first conductive line extends from the second display region to the first display region, each second conductive line is located in the first display region and located between adjacent first conductive line, each second conductive line extends in a first direction, each third conductive line extends in a second direction, the third conductive line extends from the second display region to the first display region, and adjacent second conductive lines are spaced apart from each other in the first direction, and the second conductive line is connected with the first conductive line by the third conductive line.