Display Scan Line Grid Layout for Lower Power Line Load
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Solution Overview
Problem
Display devices face challenges in reducing power line load, which affects reliability.
Innovation Solution
A display device design with a substrate that includes specific pixel configurations and scan line arrangements, utilizing contactors to connect scan lines, and power lines, reducing the load on power lines by optimizing their connections and layouts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power lines are extended to cover the entire display area, then all pixels can be powered, but the load on power lines increases and reliability decreases
Solution Approach 1:
The display area is divided into multiple regions, each with its own local power lines connected to pad parts at different locations. This segmentation allows power to be distributed in smaller segments rather than through long continuous lines, reducing the overall load on each power line segment and improving reliability.
Solution Approach 2:
Power lines are configured to extend not only in the first direction (horizontal) but also in the second direction (vertical) toward pad parts located at multiple positions including side edges. This two-dimensional power distribution approach reduces the length and load of individual power lines by providing multiple access points for power delivery.
2Ease of operation
If scan lines are arranged in a grid pattern with contactors, then signal distribution is improved, but device complexity increases
Solution Approach 1:
First scan lines extending in the first direction and second scan lines extending in the second direction are merged through contactors to form a unified grid structure. This integration allows signals to be distributed efficiently in both directions while sharing common conductive paths, improving signal distribution without proportionally increasing complexity.
Solution Approach 2:
The scan line grid structure with contactors serves multiple functions: it distributes signals horizontally and vertically, provides redundant signal paths, and enables flexible addressing of pixels. This multi-functional design improves ease of operation while the modular contactor structure keeps complexity manageable.
Data Source
AI summary
A display device includes a substrate including a display area and a non-display area; pixels disposed in the display area; first scan lines that transmit signals to the pixels, extend in a first direction, and are disposed in a second direction different from the first direction; second scan lines that extend in the second direction and are disposed in the first direction; and a pad part electrically connected to the second scan lines and disposed in the non-display area. Each of the first scan lines is electrically connected to at least one of the second scan lines through a corresponding one of contactors. Each of the pixels is a first pixel, a second pixel, or a third pixel based on whether or not including a contactor.