Display Device Auxiliary Gate Lines Narrow Border
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Solution Overview
Problem
Existing display device technologies face challenges in narrowing the border width and improving the screen-to-body ratio due to increased resistance-capacitance (RC) load from additional gate lines, especially in large-size, high-resolution, and high-refresh-rate displays.
Innovation Solution
The display device configuration includes auxiliary gate and data lines that connect the gate and data lines to the driving circuits, with these auxiliary lines being perpendicular to the main lines and parallel to the edges, allowing the driving circuits to be placed on the same side, reducing the need for additional space and minimizing RC load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If additional gate lines are connected between original gate lines and driving circuit in parallel layout, then border width is narrowed, but RC load increases
Solution Approach 1:
The patent transitions from a conventional parallel connection layout to a perpendicular connection layout. The auxiliary gate lines are arranged perpendicular to the original gate lines, changing the spatial dimension of connection. This dimensional change allows the driving circuit to be positioned at the edge of the display panel while maintaining narrow borders, and simultaneously reduces the overlapping area between gate lines and data lines, thereby reducing RC load.
2Area of stationary object
If additional gate lines are connected between original gate lines and driving circuit, then screen-to-body ratio is improved, but gate fall time increases
Solution Approach 1:
By arranging auxiliary gate lines perpendicular to original gate lines, the patent reduces the length of overlapping regions between gate lines and data lines. This dimensional reconfiguration shortens the signal transmission path and reduces capacitive coupling, thereby decreasing gate fall time while maintaining a high screen-to-body ratio through the narrow border design.
3Length of stationary object
If driving circuit is disposed at edge of display panel, then border width is narrowed, but RC load increases
Solution Approach 1:
The patent segments the gate line connections into two sets: original gate lines connected perpendicular to data lines, and auxiliary gate lines connected parallel to data lines. This segmentation allows the driving circuit to be positioned at the edge while minimizing RC load. The auxiliary gate lines serve as additional connection paths that reduce the overall RC burden on the driving circuit by distributing the capacitive load across multiple perpendicular connection points.
Data Source
AI summary
A display device includes a substrate, gate lines, a driving circuit, and auxiliary gate lines. The substrate has a display area. The gate lines are disposed on the display area, and are in parallel with a first edge of the display area. The gate lines include a first gate line which is farthest from the first edge. The driving circuit is disposed adjacent to the first edge. The auxiliary gate lines substantially perpendicular to the gate lines are connected to the gate lines, and are in parallel with a second edge of the display area. The auxiliary gate lines include a first auxiliary gate line and at least one auxiliary gate line. The first auxiliary gate line is configured to connect the first gate line to the driving circuit. The at least one auxiliary gate line is disposed between the second edge and the first auxiliary gate line.