| 摘要 |
An analog voltage source circuit and display device, the circuit comprising: a voltage input end, a DC-DC conversion circuit, a voltage output end, a duty ratio control circuit and an output voltage sampling circuit; the output voltage sampling circuit is used for feeding back the magnitude of the output voltage to the duty ratio control circuit; the duty ratio control circuit is used for controlling the magnitude of the output voltage of the DC-DC conversion circuit according to the feedback from the output voltage sampling circuit. The circuit further comprises a voltage regulation circuit. The input end of the voltage regulation circuit is used for inputting a voltage regulation signal, and the output end of the voltage regulation circuit is connected to the output voltage sampling circuit. The voltage regulation circuit increases or decreases the feedback from the output voltage sampling circuit according to the voltage regulation signal to increase or decrease the voltage outputted by the voltage output end. The analog voltage source circuit and display device can adjust the voltage outputted by an analog voltage source of a liquid crystal panel, further reducing the power consumption of the liquid crystal panel. |
