Overcurrent protection circuit and method, clock signal generation circuit and display device

Abstract

The invention provides an overcurrent protection circuit and a method, a clock signal generation circuit and a display device. The overcurrent protection circuit comprises N first over-current detection circuits, N second over-current detection circuits, a first signal generation circuit, a second signal generation circuit, a first level conversion circuit, a second level conversion circuit and acontrol circuit. The first signal generation circuit is used for outputting a first control signal to the first level conversion circuit when receiving a first overcurrent indication signal; the second signal generation circuit is used for outputting a second control signal to the second level conversion circuit when receiving a second overcurrent indication signal; the control circuit is used forproviding a turn-off control signal for the n output control module within a preset time after receiving the third control signal and / or the fourth control signal; wherein N is a positive integer, and n is a positive integer smaller than or equal to N. According to the invention, the overcurrent protection of the clock signal generation circuit can be realized only by adopting two level conversion circuits.

Description

technical field [0001] The invention relates to the technical field of overcurrent protection, in particular to an overcurrent protection circuit, a method, a clock signal generation circuit and a display device. Background technique [0002] In the gate drive circuit included in the display device, several clock signal generation circuits need to be used to convert the low-voltage clock signal into a high-voltage clock signal, which is used to supply power to the gate of the transistor; in order to prevent the output of the clock signal generation circuit from being short-circuited If the chip fails, overcurrent protection needs to be added, and the output power tube should be disconnected during protection. In the prior art, the overcurrent protection of the clock signal generation circuit requires a large number of level shifting circuits, which is not conducive to saving the area. Contents of the invention [0003] The main purpose of the present invention is to provi...

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Problems solved by technology

[0003] The main purpose of the present invention is to provide an overcurrent protection circuit, method, clock signal generation circuit and display device, which solves the problem of the number of level conversion circuits that need to be used when performing overcurrent protection on the clock signal generation circuit in the prior art. Many, which is not conducive to the problem of saving area

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