Patent ID: 11922852
Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A driving system of a display device, comprising:
a control module, wherein the control module comprises a first control terminal, a second control terminal, a first feedback terminal, and a second feedback terminal, and the control module is configured to output a first control signal at the first control terminal and output a second control single at the second control terminal under control of a first feedback signal received at the first feedback terminal and a second feedback signal received at the second feedback terminal;
a voltage conversion module, wherein the voltage conversion module receives an input voltage and is electrically connected to the first control terminal, the second control terminal, and the first feedback terminal, and the voltage conversion module is configured to convert the input voltage into a target voltage and output the first feedback signal to the first feedback terminal under control of the first control signal and the second control signal; and
a detection module, wherein the detection module receives a third control signal and is electrically connected to the first feedback terminal and the second feedback terminal, and the detection module is configured to detect, under control of the third control signal after the display device is turned on, a voltage level at the first feedback terminal, and is configured to output the second feedback signal to the second feedback terminal based on the voltage level at the first feedback terminal;
wherein in response to the voltage level at the first feedback terminal being abnormal, the control module is configured to output the first control signal and the second control signal according to the second feedback signal to turn off the voltage conversion module,
wherein the voltage conversion module comprises a first transistor, a second transistor, an inductor, a capacitor, a diode, a first resistor, and a second resistor;
a gate electrode of the first transistor is connected to the first control terminal, a source of the first transistor receives the input voltage, a drain electrode of the first transistor, a source electrode of the second transistor, a first terminal of the inductor, and a cathode of the diode are connected together, a gate electrode of the second transistor is connected to the second control terminal, a drain electrode of the second transistor is grounded, a second terminal of the inductor, a first terminal of the capacitor, and a first terminal of the first resistor are connected to a target voltage output terminal, the target voltage output terminal outputs the target voltage, a second terminal of the first resistor and a first terminal of the second resistor are connected to the first feedback terminal, and an anode of the diode, a second terminal of the capacitor, and a second terminal of the second resistor are grounded.