GOA Reset Circuit for Last-Row Floating Reset Stability
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Solution Overview
Problem
The output terminal of the Gate Driver on Array (GOA) unit for the last row is always in a multi-output state due to the floating reset terminal, affecting the reliability and long-term stability of the GOA circuit.
Innovation Solution
A GOA reset circuit with first and second electronic switch circuits connected to the input and output terminals of the GOA unit, respectively, to independently or collectively connect low and high level signal terminals to the reset terminal, ensuring proper resetting and normal operation of the GOA unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the GOA unit for the last row is not reset, then the circuit structure remains simple, but the output terminal remains in multi-out state affecting reliability and long-term stability
Solution Approach 1:
The patent introduces a reset circuit as an intermediary component between the GOA units. This reset circuit includes a reset signal input terminal, a reset control circuit, and a reset output terminal connected to the reset terminal of the last GOA unit. The reset control circuit generates reset signals based on control signals from the previous GOA unit, effectively mediating the reset function to ensure proper operation of the last GOA unit without requiring complex modifications to the existing GOA structure.
2Reliability
If a reset circuit is added to the last GOA unit, then the reliability and long-term stability are improved, but the device complexity increases
Solution Approach 1:
The patent merges the reset circuit with the existing GOA unit structure. The reset control circuit is integrated within the last GOA unit, sharing common signal lines and control mechanisms with the other GOA units. The reset signal is generated using the same clock signals (CLK and CLKB) that drive the GOA units, and the reset terminal is connected to the same output terminal structure. This merging approach minimizes additional complexity while ensuring reliable reset functionality.
Data Source
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AI summary
A gate driver on array (GOA) reset circuit, array substrate and display, for improving the reliability and long term stability of a GOA circuit, thus improving performance of the GOA circuit; the GOA reset circuit comprises: a first electronic switching circuit (301) connected with the input terminal of a GOA unit, and a second electronic switch circuit (302) connected with the output terminal of the GOA unit; the first electronic switching circuit (301) is cormected to a low power level signal terminal, is in a closed state when the input terminal of the GOA unit is in a high power level, and transmits a low power level signal to the reset terminal of the GOA unit; and the second electronic switching circuit (302) is connected to a high power level signal terminal, is in a closed state when the output terminal of the GOA unit is in a high power level and transmits the high power level signal to the reset terminal.