Display Substrate Signal-Line Layout for Anti-Static Protection
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Solution Overview
Problem
Display substrates with small sizes produced through multiplexed mask exposure methods often lack anti-static units, leading to weak anti-static capability and potential electrostatic discharge issues.
Innovation Solution
The display substrate design includes a gate driving circuit with multi-stage shift register units and anti-static structures at specific positions, such as connections between signal lines and connecting lines, using welding structures and transfer structures to enhance anti-static protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiplexed mask exposure method is used to produce small-size display substrates, then production efficiency and cost savings are improved, but anti-static capability deteriorates due to missing anti-static units
Solution Approach 1:
The patent applies local quality by adding anti-static structures specifically at critical positions (signal line connections and specific regions) rather than uniformly across the entire substrate. This targeted approach provides anti-static protection where electrostatic discharge risks are highest, while maintaining the multiplexed mask exposure production method for cost efficiency.
2Reliability
If anti-static structures are added to small-size display substrates, then anti-static capability is improved, but device complexity increases
Solution Approach 1:
The anti-static structures are segmented into discrete components positioned at specific locations (signal line connections and particular regions) rather than implementing a continuous anti-static layer. This segmentation provides necessary protection while minimizing overall structural complexity and maintaining compatibility with existing manufacturing processes.
3Object-affected harmful factors
If anti-static structures are added at signal line connections, then electrostatic discharge risk is reduced, but manufacturing complexity increases
Solution Approach 1:
The anti-static structures are incorporated during the existing manufacturing process at the signal line connection points before final assembly. This preliminary action ensures anti-static protection is built-in from the outset, preventing electrostatic discharge risks without requiring complex post-manufacturing modifications or additional manufacturing steps.
Data Source
AI summary
Provided is a display substrate, including: a base substrate; a gate driving circuit; first signal lines in a side region, a first corner region and a second corner region. The first signal lines include an initiation signal line and an initiation signal lead on a side of the initiation signal line close to the gate driving circuit, and the two extend in a second direction and are electrically connected through a first connecting line in the second corner region. First signal lines are provided with an anti-static structure in at least one of first position and second position, the first position includes a connection between the initiation signal line, initiation signal lead and the first connecting line, and the second position includes a portion of the first signal lines on a side of a row where a first-stage shift register unit is located close to the binding opposite region.