Display Fan-Out Line Layout for Short-Circuit and Resistance Control
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Solution Overview
Problem
Existing display devices face issues with resistance deviation and short-circuit defects between electrode components, particularly in the fan-out areas where power lines and sensing lines are closely arranged, leading to manufacturing challenges and potential image quality deviations.
Innovation Solution
The display device incorporates a fan-out area with obliquely spaced first and second power lines, which are non-parallel and do not overlap, along with a fan-out line system that includes multiple lines spaced apart in different directions, to reduce resistance deviations and prevent short-circuit defects by maintaining electrical signal integrity and minimizing overlap between power lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If power lines are closely arranged in the fan-out area, then the device complexity is reduced, but resistance deviation increases and short-circuit defects occur
Solution Approach 1:
The patent applies asymmetry by arranging power lines in a non-parallel, oblique configuration rather than symmetric parallel lines. The first and second power lines are positioned at different angles and distances from the fan-out line, creating an asymmetric layout that reduces capacitive coupling and resistance deviation while maintaining compact spacing.
Solution Approach 2:
The patent transitions from a one-dimensional parallel line arrangement to a two-dimensional oblique arrangement. By positioning power lines at angles and creating a separation area that extends in an oblique direction, the design utilizes spatial dimensionality to reduce interference while maintaining compact area utilization.
2Reliability
If power lines are spaced apart by a separation area, then short-circuit defects are prevented, but the area occupied increases
Solution Approach 1:
The patent applies partial action by creating a separation area that is not uniformly distributed but only in specific regions where interference occurs. The separation area extends in an oblique direction and is positioned strategically between power lines and fan-out lines, providing sufficient isolation without occupying excessive overall area.
3Reliability
If multiple fan-out lines are used, then electrical signal integrity is maintained, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies local quality by varying the spacing and arrangement of fan-out lines based on their specific positions and functions. Different fan-out lines have different spacing relationships with power lines, with separation areas positioned strategically where interference is most likely to occur, rather than applying uniform spacing throughout.
Data Source
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AI summary
A display device includes a display area and a non-display area adjacent to the display area. The display device includes a pixel disposed in the display area; a driving controller disposed in the non-display area, the driving controller controlling driving of the pixel; and a line part having at least a portion disposed in the non-display area, the line part electrically connecting the pixel and the driving controller to each other between the pixel and the driving controller. The non-display area includes a fan-out area disposed between the display area and the driving controller.