Gate Drive Circuit Voltage Boosting Module for Display Panel Signal Stability
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Solution Overview
Problem
The existing gate drive circuits in display panels suffer from small pulse amplitudes of gate drive signals, leading to reduced reliability and stability in transistor operation.
Innovation Solution
The proposed gate drive circuit includes a voltage boosting module connected in series between the second electrode of the second transistor and the low potential line, which increases the potential of the second electrode and reduces the on-state current of the second transistor, thereby enhancing the pulse amplitude and stability of the gate drive signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional gate drive circuit is used, then the circuit structure is simple, but the pulse amplitude of the gate drive signal is small leading to reduced reliability
Solution Approach 1:
The gate drive circuit is divided into multiple functional modules: level transmission signal selection module, pull-up control module, pulse quantity reduction module, inverting module, and voltage boosting module. Each module performs a specific function to ultimately increase the pulse amplitude and improve reliability while maintaining manageable complexity through modular design.
Solution Approach 2:
The voltage boosting module changes the voltage parameter of the gate drive signal by connecting transistors in series between the second electrode and the low potential line. This parameter change increases the pulse amplitude of the gate drive signal, thereby improving the reliability of the gate drive circuit.
2Reliability
If the pulse amplitude of gate drive signal is increased, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The voltage boosting function is achieved by segmenting the transistor structure into multiple series-connected transistors (first transistor and second transistor), where each transistor contributes to the overall voltage boosting effect. This segmentation allows the complex voltage boosting function to be implemented through simpler, standardized transistor units.
Solution Approach 2:
The circuit employs dynamic control through clock signals that alternately activate different transistor configurations. The pull-up control module and pulse quantity reduction module dynamically adjust the circuit state based on timing signals, enabling the voltage boosting module to operate effectively without requiring overly complex static circuit design.
Data Source
AI summary
The present disclosure discloses a gate drive circuit and a display panel. The gate drive circuit includes a plurality of shift registers. Each shift register includes a level transmission signal selection module, a pull-up control module, a pulse quantity reduction module, a first inverting module, a first output module, a second output module, and a voltage boosting module. By connecting the voltage boosting module between a second electrode of a second transistor and a low potential line in series, when a first transistor is turned on, a potential of the second electrode of the second transistor can be increased, and on-state current of the second transistor can be reduced, so that a pulse amplitude of a second gate drive signal can be increased and stabilized.