Display Panel Gate Drive Circuit with Dual-Gate Threshold Regulation
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Solution Overview
Problem
The distortion of the waveform of the gate drive signal in display panels due to leakage currents and insufficient driving capability in the gate drive circuit affects the display effect.
Innovation Solution
A gate drive circuit incorporating an output control module and dual-gate transistors, with a voltage regulation module to regulate the threshold voltage of the dual-gate transistors, alternately conducting the transistors to improve driving capability and suppress leakage currents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional transistors are used in the gate drive circuit, then the circuit structure is simple, but the driving capability is insufficient and waveform distortion occurs
Solution Approach 1:
The patent changes the transistor type from conventional single-gate transistors to dual-gate transistors, utilizing the additional gate terminal to independently control the threshold voltage and improve driving capability. This parameter change allows the transistor to achieve better performance without significantly increasing circuit complexity
Solution Approach 2:
The patent introduces a voltage regulation module as an intermediary component that specifically controls the second gate terminal of the dual-gate transistor. This intermediary mechanism allows independent adjustment of the threshold voltage to compensate for waveform distortion while maintaining overall circuit simplicity
2Reliability
If transistors are used without voltage regulation, then the circuit is simple, but leakage current causes waveform distortion and increased power consumption
Solution Approach 1:
The voltage regulation module serves as an intermediary that specifically addresses leakage current issues by controlling the second gate terminal. This allows the circuit to maintain waveform accuracy without requiring a complete redesign of the transistor structure
Solution Approach 2:
The patent dynamically adjusts the threshold voltage parameter through the voltage regulation module based on the operating state of the transistor. This parameter change allows the circuit to compensate for leakage current effects and maintain reliable operation across different conditions
Data Source
AI summary
Disclosed are a gate drive circuit and a display panel. The gate drive circuit includes an output control module, a first transistor (T1), a second transistor (T2), and a voltage regulation module. The output control module is configured to control the first transistor (T1) and the second transistor (T2) to be alternately turned on, to alternately transmit a first output signal and a second output signal to an output terminal (O1) of the gate drive circuit. A first gate of the dual-gate transistor is connected to the output control module. The voltage regulation module is connected to a second gate of the dual-gate transistor, and is configured to regulate a voltage of the second gate of the dual-gate transistor, thereby regulating a threshold voltage of the dual-gate transistor and solving a problem of waveform distortion of a gate drive signal.