Gate driving circuit
A technology of gate drive circuit and drive circuit, which is applied in the direction of electrical digital data processing, static memory, instrument, etc., can solve the problems of affecting pre-charging, poor dark or bright lines, insufficient pixel charging rate, etc., to avoid RG too large , to avoid the effect of turn-on delay time
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Embodiment 1
[0016] A gate drive circuit of the present invention includes a drive circuit connected by a plurality of shift register units, the drive circuit includes a photocoupler and an optocoupler driver, step 1: use optocoupler to achieve electrical isolation, and the optocoupler is Fast type, controlling high-frequency switching operation, the primary side of the optocoupler has been connected in series with a current limiting resistor, and the voltage is directly applied to the input side; Step 2: Adopt a dual power supply drive structure, integrating an optocoupler with high isolation voltage and overcurrent Protection circuit; step 3: overcurrent protection output signal terminal and input interface compatible with TTL level, the maximum delay of the driving electrical signal is 1.5u; step 4: in the gate drive circuit, the nearest optocoupler The shift register unit performs gate row drive scanning; step 5: in the gate drive circuit, the shift register unit located near the photoc...
Embodiment 2
[0018] A gate drive circuit of the present invention includes a drive circuit connected by a plurality of shift register units, the drive circuit includes a photocoupler and an optocoupler driver, step 1: use optocoupler to achieve electrical isolation, and the optocoupler is Fast type, controlling high-frequency switching operation, the primary side of the optocoupler has been connected in series with a current limiting resistor, and the voltage is directly applied to the input side; Step 2: Adopt a dual power supply drive structure, integrating an optocoupler with high isolation voltage and overcurrent Protection circuit; step 3: overcurrent protection output signal terminal and input interface compatible with TTL level, the maximum delay of the driving electrical signal is 1.5u; step 4: in the gate drive circuit, the nearest optocoupler The shift register unit performs gate row drive scanning; step 5: in the gate drive circuit, the shift register unit located near the photoc...
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