Display Panel Gate-Line Layout for Narrow-Bezel Reliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In display devices with a narrow bezel, the increasing number of crossing driving lines leads to higher instances of contact failures between driving lines, affecting the yield and reliability of the display panel.
Innovation Solution
The display panel design includes specific configurations of gate lines and connection lines, where connection lines are strategically spaced and overlapped to reduce contact failures, with each line extending only from the gate driver to the corresponding gate line, and featuring distinct lengths and layers to minimize electrical connections between crossing lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If both gate driver and data driver are located at the same side of the display panel to achieve narrow bezel, then the bezel width is reduced, but the number of crossing driving lines increases leading to more contact failures
Solution Approach 1:
The patent applies dimensionality change by transitioning from a 2D planar layout to a 3D stacked architecture. Connection lines are routed through different layers (first connection line in first layer, second connection line in second layer) to physically separate crossing lines that would otherwise intersect in the same plane, thereby eliminating contact failures while maintaining the narrow bezel configuration
Solution Approach 2:
The patent segments the connection lines into multiple independent layers. The first connection line is placed in a first layer and the second connection line in a second layer, dividing the routing path into separate spatial zones. This segmentation allows lines to cross without physical contact, resolving the reliability issue while preserving the compact side-mounted driver layout
2Adaptability or versatility
If connection lines are extended to overlap multiple gate lines for flexibility, then routing flexibility is improved, but the risk of contact failure between crossing lines increases
Solution Approach 1:
The patent resolves this contradiction by using vertical layering to provide routing flexibility without horizontal crossing. Connection lines can serve multiple gate lines by extending in the vertical dimension through different layers, maintaining adaptability while eliminating contact failures that would occur if lines crossed in the same plane
3Device complexity
If multiple driving lines cross each other on the display panel, then the driver layout is compact, but instances of contact failure between driving lines increase
Solution Approach 1:
The patent segments crossing driving lines into different vertical layers. The first connection line operates in a first layer while the second connection line operates in a second layer, allowing compact 2D routing while preventing contact failures through 3D spatial separation. This maintains driver layout compactness without compromising reliability
Data Source
AI summary
A display panel includes: a first gate line extending in a first direction; a second gate line extending in the first direction and spaced apart from the first gate line in a second direction crossing the first direction; a first connection line extending in the second direction; and a second connection line extending in the second direction and spaced apart from the first connection line in the first direction, wherein a distal end of the first connection line overlaps the first gate line and is electrically connected to the first gate line, and wherein a distal end of the second connection line overlaps the second gate line and is electrically connected to the second gate line.