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OVERCURRENT PROTECTION CIRCUIT, DISPLAY DEVICE AND DRIVE CIRCUIT THEREOF, AND OVERCURRENT PROTECTION METHOD
OVERCURRENT PROTECTION CIRCUIT, DISPLAY DEVICE AND DRIVE CIRCUIT THEREOF, AND OVERCURRENT PROTECTION METHOD
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机译：过电流保护电路，显示装置及其驱动电路，以及过电流保护方法
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摘要
Provided is an overcurrent protection circuit, which is configured to continuously detect a plurality of gate input signals inputted to a gate drive circuit, and comprises a sampling sub-circuit, a delay determination sub-circuit and a counting control sub-circuit. The sampling sub-circuit acquires the plurality of gate input signals, screens one of the plurality of gate input signals, a voltage value of which is greater than a first preset voltage value, and generates and outputs a first control signal. The delay determination sub-circuit is coupled to the sampling sub-circuit and is configured to delay the first control signal for a first preset time, determine whether a voltage value of the delayed first control signal is lower than that before delaying, and if not, output a counting signal. The counting control sub-circuit is coupled to the delay determination sub-circuit, and is configured to perform counting according to the counting signal, and in the case where the number of times of counting reaches a preset number of times, output a second control signal for cutting off signal inputting from a system board of the display device to a drive circuit of the display device.
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