Display Panel Circuit Layout for Under-Screen Sensor Light Reception
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Solution Overview
Problem
Display panels with under-screen optical sensors suffer from low light transmittance due to the presence of metal wires in pixel driving circuits, leading to insufficient light reception by the optical sensor and affecting its functionality.
Innovation Solution
The display panel is designed with a first region having a lower density of pixel driving circuits, featuring alternating arrangements of circuit vacancy regions and groups, enhancing light transmittance and uniformity, thereby improving light reception for the under-screen optical sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pixel driving circuits are densely arranged in the display region, then the display resolution and functionality are improved, but the light transmittance decreases due to metal wires blocking light
Solution Approach 1:
The display region is segmented into a first region with lower pixel driving circuit density and a second region with higher pixel driving circuit density. This segmentation allows different areas to serve different functions: the first region prioritizes light transmittance for the optical sensor while the second region prioritizes display resolution, thereby resolving the contradiction between these two requirements.
Solution Approach 2:
Different regions of the display panel are assigned different local qualities in terms of pixel driving circuit density. The first region has a lower density optimized for light transmittance, while the second region has a higher density optimized for display performance. This local differentiation allows each region to excel at its specific function without compromising the other.
2Ease of manufacture
If pixel driving circuits are uniformly distributed across the display region, then the manufacturing process is simplified, but the light transmittance uniformity deteriorates
Solution Approach 1:
The display region is divided into distinct first and second regions with different pixel driving circuit densities. This segmentation enables optimized light transmittance characteristics in the first region while maintaining adequate display functionality in the second region, achieving both manufacturing feasibility and optical performance.
Solution Approach 2:
The pixel driving circuit distribution adopts an asymmetric design where the first region has lower density and the second region has higher density. This asymmetric arrangement optimizes light transmittance in the first region for the optical sensor while maintaining display quality in the second region, improving overall light transmittance uniformity compared to a completely symmetric uniform distribution.
Data Source
AI summary
A display panel has a display region and a bezel region located on a periphery of the display region, and the display region includes a first region and a second region. The display panel includes a plurality of pixel driving circuits located in the first region and a plurality of pixel driving circuits located in the second region. A density of the pixel driving circuits in the first region is less than a density of the pixel driving circuits in the second region.