Abstract: A display apparatus is disclosed. The display apparatus includes a display screen configured to display an image; at least one LED light bar configured to provide light to the display screen; and a power supply circuit configured to supply power to the display apparatus. The power supply circuit includes an LLC primary winding, a first secondary winding and a second LLC secondary winding, where the first LLC secondary winding is configured to convert a voltage of the LLC primary winding into a first voltage, the second LLC secondary winding is configured to convert the voltage of the LLC primary winding into a second voltage; and the power supply circuit is configured to adjust the first voltage output from the first LLC secondary winding into a third voltage, and supply power to the at least one LED light bar through a sum of the third voltage and the second voltage.

Abstract: A display apparatus with a power supply circuit is provided. The power supply circuit is connected with a light emitting diode (LED) drive circuit, a filter circuit and a feedback circuit in the display apparatus. The power supply circuit includes a fixed-voltage power supply element and a variable-voltage power supply element, and the fixed-voltage power supply element is superposed on the variable-voltage power supply element and configured to supply power to the LED drive circuit in a stepped manner; and a controller is configured to control a voltage of the variable-voltage power supply element according to a variation of the output voltage feedback from the feedback circuit.

Abstract: A display apparatus and a display control method are disclosed. The display apparatus includes a backlight module and a display panel. The backlight module comprises a controller, a plurality of power sources, and a plurality of lamp areas corresponding to the plurality of power sources. The plurality of power sources include a first power source for providing a positive power supply signal to the controller and driving a lamp area, and a second power source for driving a lamp area. The plurality of power sources are configured to output negative power supply signals and negative reference signals; the controller is configured to output a driving signal through negative voltage driving based on a control signal, the negative power supply signals and the negative reference signals.

Abstract: A laser projection apparatus includes a laser source assembly, a display control circuit, a signal shaping circuit and a laser source driving circuit. The display control circuit is configured to output a first driving signal and a second driving signal. The signal shaping circuit is coupled to the laser source driving circuit, and is configured to shape the first driving signal based on a shaping signal to obtain a target driving signal. A frequency of the target driving signal is higher than a frequency of the first driving signal. The laser source driving circuit is coupled to the laser source assembly, and is configured to receive the second driving signal and the target driving signal, and drive the laser source assembly to be turned on or turned off in response to the second driving signal and the target driving signal.

Abstract: A display apparatus with a power supply circuit is provided. The power supply circuit is connected with a light emitting diode (LED) drive circuit, a filter circuit and a feedback circuit in the display apparatus. The power supply circuit includes a fixed-voltage power supply element and a variable-voltage power supply element, and the fixed-voltage power supply element is superposed on the variable-voltage power supply element and configured to supply power to the LED drive circuit in a stepped manner; and a controller is configured to control a voltage of the variable-voltage power supply element according to a variation of the output voltage feedback from the feedback circuit.

Abstract: A display apparatus and a display control method are disclosed. The display apparatus includes a backlight module and a display panel. The backlight module comprises a controller, a plurality of power sources, and a plurality of lamp areas corresponding to the plurality of power sources. The plurality of power sources include a first power source for providing a positive power supply signal to the controller and driving a lamp area, and a second power source for driving a lamp area. The plurality of power sources are configured to output negative power supply signals and negative reference signals; the controller is configured to output a driving signal through negative voltage driving based on a control signal, the negative power supply signals and the negative reference signals.