Gate Drive Circuit Signal Conversion for Compact GOA Regions
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Solution Overview
Problem
The complexity and area of the GOA circuit region are increased by adding high-level signal lines, leading to increased complexity and size in display panels.
Innovation Solution
A gate drive circuit with N-stages GOA circuits and signal conversion circuits connected in a one-to-one correspondence, where the signal conversion circuits convert input signals into control signals to reduce the need for additional signal lines, thereby reducing the complexity and area of the GOA circuit region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-level signal lines are added into the GOA circuit region to improve refresh rates and display effects, then the display performance is improved, but the complexity and area of the GOA circuit region increase
Solution Approach 1:
The patent merges the high-level signal generation function into the existing GOA circuit by using the output of the last stage GOA circuit to drive the first stage through a feedback connection. This eliminates the need for separate high-level signal lines while maintaining the improved refresh rate performance, thus resolving the contradiction between display performance and circuit complexity
Solution Approach 2:
The GOA circuit is designed to perform multiple functions: it serves as both the main driving circuit and the high-level signal generator simultaneously. The feedback connection allows the same circuit stages to generate both the scan signals and the high-level signals needed for improved refresh rates, reducing overall circuit complexity while achieving better display performance
2Productivity
If high-level signal lines are added into the GOA circuit region to improve refresh rates and display effects, then the display performance is improved, but the area of the GOA circuit region increases
Solution Approach 1:
The patent combines the high-level signal generation function within the existing GOA circuit footprint by implementing a feedback connection from the last stage to the first stage. This eliminates the need for additional dedicated high-level signal lines that would occupy extra area, thus maintaining improved refresh rate performance while avoiding increase in GOA circuit region area
Solution Approach 2:
The patent uses a feedback connection approach that reuses existing circuit stages in a temporal sequence, effectively adding functionality without increasing spatial dimensions. The same physical circuit elements perform multiple roles at different times, avoiding the need for additional signal lines that would expand the circuit region area
Data Source
AI summary
The disclosure relates to a gate drive circuit and a display panel. The gate drive circuit includes signal conversion circuits; the signal conversion circuit is for converting an input signal to be processed into a control signal and transmitting the control signal to a GOA circuit; and the GOA circuit performs a corresponding operation according to the control signal. The signal conversion circuit is added into the gate drive circuit in the present disclosure, thereby saving the signal lines for transmitting a gate high-level signal or a pull-down control signal, reducing the complexity of a GOA circuit region.