Provided is a display apparatus and a method of operating the same. The display apparatus includes: a power supply configured to generate power to be supplied to the display apparatus from an external power source, an input interface configured to receive a turn-on command or a turn-off command for the display apparatus, a main module configured to operate at an operation voltage and control the input interface to receive the turn-off command, and a controller configured to operate at a standby voltage, wherein the controller is configured to: a first switch control signal to open a first switch to deliver the operation voltage to the main module based on the turn-off command, and output a second switch control signal to open a second switch connected between the external power source and the power supply based on the outputting of the first switch control signal.

The present disclosure relates to a display device for alleviating an efficiency reduction problem at a light load, and an operating method therefor, the display device comprising: a display; a power supply unit including a direct current (DC)/DC converter, which converts the level of DC power to supply same to a load; and a control unit for controlling the operating frequency of the DC/DC converter, wherein the control unit can change the resonance frequency of the DC/DC converter according to the load.

A light emitting diode driver (LED) circuit and method are provided. The light emitting diode driver circuit includes an LED array; a LED driving circuit configured to supply current to the LED array through switching operations of a plurality of switches; and a driving controller configured to control the plurality of switches to supply current, corresponding to a dimming signal, to the LED array using a clock signal of a preset frequency. The driving controller may be further configured to control the plurality of switches to alternately perform switching operations.

The present invention provides a driving circuit for display panel, which comprises a power supply circuit and a driving unit. The power supply circuit outputs a driving power supply voltage. The driving unit produces a driving signal according to a data signal and the driving power supply voltage for driving the display panel. In addition, the voltage level of the driving power supply voltage increases to a predetermined level. Thereby, during the process of charging the display panel by the data driving circuit, the driving power supply voltage output by the power supply circuit increases from a low level to a predetermined level for reducing the power consumption of the driving circuit.

Techniques related to improved front facing camera performance using display light during exposure of a scene are discussed. Such techniques may include providing, via a display device, exposure light during exposure of the scene such that providing the exposure light includes setting regions of the display device to different colors during exposure.

The present invention provides a voltage boost driving circuit for LED backlight, which includes a first power input port, a second power input port, an LED light bar, a positive boost circuit, a negative boost circuit, and a luminance controlling circuit configured for controlling the luminance of the LED light bar; the first and second power input ports are respectively connected to the positive and negative poles of an external power supply; the positive boost circuit is connected between the first power input port and the positive pole of the LED light bar; the second power input port is connected to the ground; the negative boost circuit is connected to the positive boost circuit via the luminance controlling circuit, an output port of the negative boost circuit is connected to the negative pole of the LED light bar. An LCD device is further provided.

Examples of the present disclosure generally provide a processing system for a display device including an integrated capacitive sensing device. The processing system includes a sensor module configured to be coupled to a plurality of sensor electrodes. Each sensor electrode includes at least one display electrode. The sensor module drives the plurality of sensor electrodes for capacitive sensing during a first period. The processing system further includes a display driver configured to drive display signals onto the display electrodes during a second period. The display signals are based on a reference voltage, and the first period and the second period are at least partially overlapping. The processing system further includes a power supply configured to provide the reference voltage to the display driver. The power supply includes a resonator circuit having an inductor connected in parallel with a capacitor and configured to modulate the reference voltage.

The present invention provides a voltage boost driving circuit for LED backlight, which includes a first power input port, a second power input port, an LED light bar, a positive boost circuit, a negative boost circuit, and a luminance controlling circuit configured for controlling the luminance of the LED light bar; the first and second power input ports are respectively connected to the positive and negative poles of an external power supply; the positive boost circuit is connected between the first power input port and the positive pole of the LED light bar; the second power input port is connected to the ground; the negative boost circuit is connected to the positive boost circuit via the luminance controlling circuit, an output port of the negative boost circuit is connected to the negative pole of the LED light bar. An LCD device is further provided.

The present disclosure relates to a display device for alleviating an efficiency reduction problem at a light load, and an operating method therefor, the display device comprising: a display; a power supply unit including a direct current (DC)/DC converter, which converts the level of DC power to supply same to a load; and a control unit for controlling the operating frequency of the DC/DC converter, wherein the control unit can change the resonance frequency of the DC/DC converter according to the load.

Disclosed is a voltage generator of a display device, which includes an input circuit that outputs a first request signal and a second request signal in response to first and second voltage data signals and first and second feedback voltages, a FIFO and priority logic that outputs one of first and second selection signals as an active level in synchronization with a clock signal when at least one of the first and second request signals is at an active level, switching logic that outputs a plurality of switching signals in response to one of the first and second selection signals, which is the active level, and a voltage converter that converts an input voltage into first and second output voltages, respectively, in response to the plurality of switching signals and outputs the first and second feedback voltages corresponding to the first and second output voltages, respectively. When the first and second request signals are simultaneously at the active level, the FIFO and priority logic outputs one of the first and second selection signals at the active level depending on a priority.