Display Panel Scan Line Layout for Easier Back-Routing

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Solution Overview

Problem

The concentration of signal lines in display panels, particularly in micro-LED and mini-LED display panels, leads to difficulties in the back-routing process and non-uniform image display due to excessive density.

Innovation Solution

The display panel design includes multiple shift register circuit groups arranged in intersecting directions, with signal lines divided into groups connected to different shift register circuit groups, reducing their density and facilitating the back-routing process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If signal lines are arranged close to the generation circuit to reduce wiring length, then signal transmission efficiency is improved, but signal line density becomes excessively high making back-routing difficult

Engineering Contradiction:
Improvesignal transmission efficiencyVSAvoidback-routing process difficulty
Core Design Contradiction:
SpeedVSEase of manufacture

Solution Approach 1:

The patent divides the signal lines into multiple groups, with each group connected to a corresponding shift register circuit group. This segmentation distributes the signal lines across different regions rather than concentrating them near the generation circuit, reducing local density while maintaining functional connectivity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent arranges shift register circuit groups and their corresponding signal lines in a distributed spatial pattern across the display region. By utilizing the two-dimensional layout space more effectively, the signal lines are spread out rather than concentrated in one area, facilitating back-routing while maintaining transmission efficiency.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Length of stationary object

If signal lines are concentrated near the generation circuit, then wiring length is reduced, but image display uniformity deteriorates due to excessive signal line density

Engineering Contradiction:
Improvewiring lengthVSAvoidimage display uniformity
Core Design Contradiction:
Length of stationary objectVSManufacturing precision

Solution Approach 1:

The signal lines are segmented into multiple groups, each serving a specific shift register circuit group. This distribution prevents excessive concentration of signal lines in any single region, thereby maintaining image display uniformity while keeping wiring length reasonable.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different regions of the display panel have different signal line densities according to their functional requirements. The signal lines are distributed to match the spatial distribution of shift register circuit groups, creating locally optimized density patterns that maintain overall image uniformity.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS20260087977A1Display panel and display device
Publication Date: 2026.03.26 TIANMA ADVANCED DISPLAY TECH INST (XIAMEN) CO LTD
  • US20260087977A1 patent drawing
  • US20260087977A1 patent drawing
  • US20260087977A1 patent drawing

AI summary

Provided are a display panel and a display device. The display region of the display panel includes multiple shift register circuit groups. The shift register circuit group includes multiple shift register units disposed sequentially in a first direction. The multiple shift register circuit groups are arranged in a second direction. The first direction and the second direction intersect. The shift register circuit group is configured to output a first scan signal and includes at least a first shift register circuit group and a second shift register circuit group, which are respectively connected to first scan signals of different rows. The display region further includes multiple signal lines extending in the first direction. The signal line includes multiple signal line groups. The signal line group is electrically connected to a respective shift register circuit group, and different signal line groups are electrically connected to different shift register circuit groups.