Gate Driver Placement for Signal Integrity in Large Displays
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Solution Overview
Problem
Large-scale liquid crystal display panels with long signal lines suffer from signal distortion, resulting in poor display quality compared to conventional panels.
Innovation Solution
A display apparatus with a gate driver positioned at the center of the panel, rather than at the edges, to minimize signal transmission distance and prevent distortion, while also reducing the non-display area and potentially integrating gate drivers across the panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the gate driver is disposed at the edge of the display panel, then the non-display area is reduced, but the gate signal is distorted due to long transmission distance
Solution Approach 1:
The display panel is divided into multiple sections with multiple gate drivers distributed across different locations (edges and center), segmenting the single long gate line into multiple shorter transmission paths. This segmentation reduces signal distortion while maintaining compact panel design.
Solution Approach 2:
The gate driver placement transitions from a one-dimensional edge arrangement to a two-dimensional distributed arrangement including center positions. This dimensional change optimizes signal transmission distance without increasing the panel's external dimensions.
2Reliability
If the gate driver is disposed at the center of the display panel, then signal distortion is reduced, but the non-display area increases
Solution Approach 1:
Multiple gate drivers are segmented across different locations (edges and center) to handle different regions of the display panel. This segmentation allows each driver to serve a localized area with shorter transmission distances, reducing signal distortion without requiring large non-display areas.
Solution Approach 2:
Gate drivers are strategically placed at specific locations (edges and center) based on local signal transmission requirements. This localized placement optimizes signal quality in each region while minimizing the overall non-display area.
3Reliability
If multiple gate drivers are integrated across the panel, then signal transmission distance is minimized, but device complexity increases
Solution Approach 1:
The display panel is segmented into multiple regions, each served by a dedicated gate driver. This segmentation reduces signal transmission distance for each region while distributing the complexity across multiple simpler driver units rather than one complex centralized driver.
Solution Approach 2:
Gate drivers are placed at selective key positions (edges and center) rather than uniformly across the entire panel. This partial placement provides sufficient signal quality improvement without the excessive complexity of complete coverage.
Data Source
AI summary
A display apparatus includes: a substrate including display areas and a non-display area disposed around edges of the display areas; gate lines disposed in the display areas; data lines disposed in the display areas and crossing the gate lines; pixels disposed in the display areas and connected to the gate lines and data lines; and a gate driver disposed in the peripheral area, between the display areas. The gate driver is connected to the gate lines, to output gate signals to the gate lines.