Gate Drive Circuit Resolution Switching Without TCON Modification
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Solution Overview
Problem
Current gate drive circuits in thin-film transistor displays face challenges in minimizing power consumption, particularly in achieving resolution switching without delaying clock signals, which results in poor image display and increased development costs.
Innovation Solution
A gate drive circuit design featuring cascaded shift register units, buffer units, and touch control switch units that allow for the extension of effective pulse signals, enabling line-by-line scanning in high-definition mode and simultaneous two-line scanning in low power consumption mode without modifying the Timer Control Register (TCON).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If resolution switching is implemented in conventional gate drive circuits, then power consumption is reduced, but clock signal delay occurs resulting in poor image display
Solution Approach 1:
The circuit dynamically switches between different scanning modes (line-by-line scanning and two-line simultaneous scanning) based on display needs. The buffer units can be selectively activated or deactivated to change the scanning pattern, allowing the system to adapt between high-definition mode and low power consumption mode without fixed constraints
Solution Approach 2:
Buffer units are introduced as intermediary components between shift register units to extend and hold effective pulse signals. These buffer units act as mediators that can delay and extend clock signals without causing signal loss, enabling resolution switching while maintaining image display quality through selective activation
2Loss of energy
If resolution switching is implemented by modifying TCON, then power consumption reduction is achieved, but device complexity and development costs increase
Solution Approach 1:
The gate drive circuit achieves resolution switching functionality through its own internal buffer units and control logic without requiring external TCON modifications. The circuit serves itself by using the existing GOA structure with added buffer units to implement both high-definition and low power consumption modes independently of the TCON register
Solution Approach 2:
The buffer units serve multiple functions: they extend effective pulse signals, enable resolution switching, and support different scanning modes (line-by-line and two-line simultaneous scanning). This multi-functionality allows the same circuit structure to achieve both high definition display and low power consumption operation without requiring separate circuits for each mode
Data Source
AI summary
The present disclosure discloses a gate drive circuit, a display panel and a driving method for the gate drive circuit. The gate drive circuit includes a plurality of shift register units connected in cascade; and further includes: buffer units which are in a one-to-one correspondence with shift register units at all levels, and touch control switch units which are in a one-to-one correspondence with shift register units at even levels. Each buffer unit in the gate drive circuit can increase the holding time of the effective pulse signal output by the shift register unit at a corresponding level by one line before resetting, and the effective pulse signal output by a buffer unit at an even level under the control of a touch control unit and the effective pulse signal output by a buffer unit at an adjacent previous odd level are reset at the same time.