| 摘要 |
An LED backlight drive circuit for driving an LED backlight circuit. The LED backlight circuit comprises at least one LED backlight unit. The LED backlight drive circuit comprises an open circuit monitoring module for monitoring an open circuit abnormality of the LED backlight unit, a short circuit monitoring module for monitoring a short circuit abnormality of the LED backlight unit, and a regulating module. The regulating module is configured to disconnect the short circuit monitoring module when the LED backlight unit experiences the open circuit abnormality and an output voltage of an output voltage end of the LED backlight drive circuit rises; and the regulating module is configured to connect the short circuit monitoring module when the LED backlight drive circuit disconnects the LED backlight unit having the open circuit abnormality and the output voltage of the output voltage end drops. The LED backlight drive circuit addresses the technical problem of erroneous detection by the short circuit monitoring module when one LED backlight unit has an open circuit and the output voltage of the LED backlight drive circuit rises. |
