Display Touch Routing Lines With Zigzag Resistance Compensation
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Solution Overview
Problem
Existing display devices face challenges in maintaining uniform signal transmission speed and reducing resistance differences between touch routing lines, leading to variations in power consumption.
Innovation Solution
The display device incorporates a resistance compensation pattern in the touch routing lines, specifically a zigzag shape, which includes gate metal, metal patterns, and source-drain electrode patterns to equalize resistance and improve signal transmission uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If touch routing lines are designed with different lengths to accommodate edge pad areas, then the display device can achieve comprehensive touch sensing coverage, but resistance differences and signal transmission speed variations increase
Solution Approach 1:
The patent applies parameter changes by introducing resistance compensation patterns (zigzag or meander shapes) in the touch routing lines. These patterns increase the effective length of the routing path, thereby compensating for the shorter physical distance in edge pad areas. This ensures that all touch routing lines have substantially equal resistance values, achieving uniform signal transmission speed while maintaining comprehensive touch sensing coverage.
2Manufacturing precision
If resistance compensation patterns are added to touch routing lines, then resistance differences are reduced, but the device complexity increases
Solution Approach 1:
The patent merges the resistance compensation function with the existing touch routing line structure. The resistance compensation patterns (zigzag or meander shapes) are integrated directly into the routing lines, combining the signal transmission function and resistance equalization function into a single unified structure. This approach achieves resistance uniformity without requiring separate compensation components, thereby minimizing the increase in device complexity.
3Use of energy by moving object
If signal transmission speed is optimized for shorter routing lines, then power consumption is reduced, but resistance differences between routing lines increase
Solution Approach 1:
The patent resolves this contradiction by changing the geometric parameters of the routing lines through resistance compensation patterns. The zigzag or meander patterns extend the effective path length, which increases resistance to compensate for shorter physical routing lines. This ensures uniform resistance across all routing lines, leading to consistent signal transmission speed and optimized power consumption without sacrificing resistance uniformity.
Data Source
AI summary
Embodiments of the present disclosure relate to a display device. A display device may include a first touch routing line electrically connected to a first touch pad and including a resistance compensation pattern, and a second touch routing line electrically connected to a second touch pad, thereby reducing a resistance difference between the touch routing lines.