Shift Register Connection Layout for Narrow-Bezel Display Substrates
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Solution Overview
Problem
Existing display substrates face challenges in reducing the size of the shift register unit, which limits the design of narrow frame display panels and affects display quality.
Innovation Solution
The display substrate incorporates a shift register unit with an optimized connection layout and structure, including a first connection wire with specific portions extending along different directions, and a layout that reduces the size of the shift register unit in the second direction, facilitating a narrow frame design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the shift register unit uses a conventional connection layout, then the circuit functionality is maintained, but the size of the shift register unit becomes large, limiting narrow frame design
Solution Approach 1:
The connection wire is divided into multiple portions (first portion, second portion, third portion) that extend in different directions (first direction, second direction, third direction). This multi-dimensional routing approach allows the connection wire to connect the first gate electrode to the first clock signal line while occupying less area in any single direction, thereby reducing the overall size of the shift register unit without complicating the manufacturing process
Solution Approach 2:
The connection wire is segmented into multiple distinct portions (first portion, second portion, third portion), each serving a specific routing function. This segmentation allows for optimized path planning in different directions, enabling compact layout while maintaining clear manufacturing guidelines for each segment
2Area of stationary object
If the first connection wire extends in multiple directions, then the area occupied is reduced enabling narrow frame design, but the connection layout becomes more complex
Solution Approach 1:
Different portions of the connection wire are assigned different extending directions based on local spatial requirements. The first portion extends in a first direction, the second portion in a second direction, and the third portion in a third direction, allowing each segment to optimally utilize available space in its local region while contributing to overall area reduction
Data Source
AI summary
A display substrate and a manufacturing method thereof, and a display device are provided. The display substrate includes a base substrate, and a shift register unit, a first clock signal line, and a second clock signal line in a peripheral region; a first portion and a second portion of a first connection wire of the display substrate are connected to a first gate electrode of a first control transistor of the shift register unit; an orthographic projection of the first portion on the base substrate is on a side of an orthographic projection of an active layer of the first control transistor on the base substrate away from a display region; and an orthographic projection of the second portion on the base substrate is on a side of the orthographic projection of the active layer of the first control transistor on the base substrate close to the display region.