Gate Drive Circuit Start Wiring Static Electricity Protection
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Solution Overview
Problem
Static electricity generated during the manufacturing process of display substrates can damage the first stage of the gate drive circuit, leading to operational failures of the gate drive circuit and subsequent stages.
Innovation Solution
A gate drive circuit design that includes a shift register with stages arranged in a specific direction, clock wiring, and a start wiring with capacitors formed at crossing points to disperse static electricity, protecting the shift register from damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a gate drive circuit is integrated on the display substrate, then the gate lines can be driven directly on the substrate, but the circuit becomes vulnerable to static electricity damage during manufacturing and testing
Solution Approach 1:
The patent introduces a capacitor as an intermediary element between the start wiring and the first stage of the shift register. This capacitor acts as a mediator that blocks static electricity from reaching the vulnerable first stage while allowing the start signal to pass through, thus protecting the integrated circuit without compromising its functionality
Solution Approach 2:
The patent applies beforehand cushioning by placing a capacitor in advance at the input端 of the first stage to cushion against potential static electricity damage. This protective measure is built into the circuit design before the damage can occur, ensuring the first stage is protected during manufacturing and testing processes
2Reliability
If the first stage of the gate drive circuit is protected from static electricity, then the overall circuit reliability improves, but additional components are required
Solution Approach 1:
The capacitor serves as a minimal intermediary component that provides protection without significantly complicating the circuit. It is a simple two-terminal element that can be easily integrated into the existing circuit layout, adding protection while maintaining circuit simplicity
Solution Approach 2:
The patent applies local quality by protecting only the critical first stage of the shift register rather than the entire gate drive circuit. This targeted approach provides necessary protection to the most vulnerable point while avoiding unnecessary complexity in other parts of the circuit
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances the reliability of the gate drive circuit by reducing the energy of static electricity applied to the shift register, thereby preventing damage and ensuring proper operation of the display device.
Implementation Method 1
capacitors are formed where the second wiring crosses the clock connecting wirings, and static electricity applied to the start wiring is dispersed through the capacitors to decrease energy of static electricity applied to the shift register
Data Source
AI summary
A gate drive circuit includes a shift register, a clock wiring and a start wiring. The shift register includes a plurality of stages arranged in a first direction on a base substrate to output a plurality of gate signals. The clock wiring is extended along the first direction. The clock wiring is electrically connected to a plurality of clock connecting wirings extended in a second direction crossing the first direction to deliver a clock signal to the stages. The start wiring includes the first wiring extended along the first direction and a second wiring connected to the first wiring and extended in the first direction to cross with the clock connecting wirings so as to deliver a vertical start signal to a first stage. Therefore, a structure of a signal wiring delivering a vertical start signal is changed, thereby protecting the gate drive circuit from static electricity.