Display Panel Dummy Line Layout for Under-Screen Camera Transmittance
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Solution Overview
Problem
Existing display panels with under-screen cameras suffer from poor light transmittance in the camera region due to the presence of pixel circuits, leading to suboptimal display effects.
Innovation Solution
The display panel design separates pixel circuits from light-emitting elements by positioning them in different regions, with pixel circuits in one region and light-emitting elements in another, and uses conductive lines to connect them, while incorporating dummy lines and adjusting data line structures to minimize display defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pixel circuits are positioned in the camera region to enable under-screen camera function, then the camera integration is achieved, but light transmittance deteriorates due to the presence of pixel circuits blocking light
Solution Approach 1:
The display panel is divided into a first display region containing pixel circuits and a second display region (camera region) without pixel circuits. This spatial segmentation allows the camera region to transmit light effectively while maintaining display functionality in other areas, resolving the contradiction between camera integration and light transmittance.
Solution Approach 2:
The data lines are designed to extend in multiple directions and pass through different layers to connect pixel circuits in the first display region with light-emitting elements in the second display region. This multi-dimensional routing enables electrical connection without placing pixel circuits in the camera region, preserving light transmittance while achieving camera integration.
2Illumination intensity
If pixel circuits are separated from light-emitting elements to improve light transmittance, then light transmittance is enhanced, but device complexity increases due to additional conductive lines and multi-layer structures
Solution Approach 1:
Multiple functions are integrated into the data lines: they serve as both electrical connection pathways and structural elements that define display regions. The data lines extend in first and second directions, pass through multiple layers, and connect different functional regions, reducing the need for separate dedicated connection structures and mitigating complexity.
Solution Approach 2:
The data lines are designed to perform multiple functions simultaneously: transmitting data signals to pixel circuits, providing structural support across different display regions, and enabling connection between separated pixel circuits and light-emitting elements through multi-layer routing. This multi-functionality reduces overall device complexity despite the separated architecture.
3Reliability
If data lines are arranged in a complex multi-layer structure to connect separated pixel circuits and light-emitting elements, then connectivity is achieved, but manufacturing precision requirements increase
Solution Approach 1:
The data lines are pre-configured to extend in specific directions and pass through predetermined layers during the manufacturing process. By establishing the multi-layer routing structure in advance during fabrication, the alignment requirements are set and maintained throughout subsequent manufacturing steps, reducing the need for high-precision adjustments later and lowering overall manufacturing precision requirements.
Data Source
AI summary
A display panel and a display device are provided. In the display panel, the data line includes a plurality of first-type data lines and a plurality of second-type data lines, each of the plurality of second-type data lines includes a first portion, a second portion, and a third portion, and the first portion and the second portion are connected by the third portion, the first portion and the second portion both extend in the second direction, and the third portion extends in the first direction, the third portion and the second portion are located in different layers, the third portion and the first portion are located in different layers, the first portion is closer to the base substrate than the third portion, and the second portion is closer to the base substrate than the third portion.