Line protection circuit and LCD

Abstract

The invention discloses a line protection circuit and an LCD. The circuit comprises a detection module and a feedback module, wherein the output terminal of a power supply management module is in connection with one terminal of a level transfer module, the other end of the level transfer module is in connection with the first terminal of the detection module, the second terminal of the detection module is in connection with a WOA line module or a GOA line module, the third terminal of the detection module is in connection with one terminal of the feedback module, and the other terminal of the feedback module is in connection with the enabled terminal of the power supply management module. The detection module is used for detecting whether the WOA line module or the GOA line module exists short circuit, and feeding back short circuit signals to the feedback module if the WOA line module or the GOA line module exists short circuit; the feedback module is used for receiving the short circuit signals fed back by the feedback module, and sending non-enabled signals to the enabled terminal of the power supply management module according to the short circuit signals to forbid a voltage management module.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a line protection circuit and a liquid crystal display. Background technique [0002] Such as figure 1 As shown, the driving circuit of the liquid crystal display generally includes a voltage management module (powerIC) 110 , a level shifter module 120 , a WOA circuit module 130 , a GOA circuit module 140 and a liquid crystal module 150 . Wherein, one end of the voltage management module 110 is connected to the level shift module 120, the other end of the level shift module 120 is connected to one end of the WOA line module 130, the other end of the WOA line module 130 is connected to one end of the GOA line module 140, and the GOA line module The other end of 140 is connected with liquid crystal module 150 . The voltage management module 110 will power off for protection when the current exceeds the threshold, but if a short circuit occurs in the WOA line module 130 and G...

AI Technical Summary

Problems solved by technology

The voltage management module 110 will power off for protection when the current exceeds the threshold, but if a short circuit occurs in the WOA line module 130 and GOA line module 140, if the current does not exceed the threshold, the voltage management module 110 will not power off for protection , it will cause the liquid crystal module 150 to be burned

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