The present disclosure describes a display apparatus. The display apparatus includes a power source, a power supply circuit, a load and a control circuit. The power source is configured to supply electric power to the load. The power supply circuit connects the power source and the load respectively, and configured to turn on or off an electric path between the power source and the load. The control circuit connects with the power source and the power supply circuit respectively and configured to control the power source circuit to determine whether the power supply supplies power to the load.

The present invention relates to a flexible transparent display sheet, and an image display apparatus including the same. The flexible transparent display sheet according to an embodiment of the present disclosure includes: a base disposed in a display area and a connection area; a metal layer formed on the base; an anti-oxide layer formed on a portion of the metal layer; a plurality of solders formed on a portion of the anti-oxide layer; a plurality of light emitters, each of which is connected to each of the plurality of solders; and an insulation layer disposed in the connection area and formed on the anti-oxide layer. Accordingly, a flexible transparent display sheet having an integrally formed power connector may be provided.

The present disclosure provides a display device, which enables minimization of a transformer circuit and which can be driven using various commercial voltages, and a method for controlling the display device. The display device according to an embodiment comprises: a display; a transformer which transforms commercial power and supplies the transformed commercial power to the display and which includes a plurality of switching devices; and a controller for determining, on the basis of the magnitude of an input voltage input to the transformer, whether or not to open at least one of the plurality of switching devices, and controlling the plurality of switching devices on the basis of an output voltage of the transformer to perform a modulation control of the output voltage to follow a predetermined reference voltage.

The present invention relates to a flexible transparent display sheet, and an image display apparatus including the same. The flexible transparent display sheet according to an embodiment of the present disclosure includes: a base disposed in a display area and a connection area; a metal layer formed on the base; an anti-oxide layer formed on a portion of the metal layer; a plurality of solders formed on a portion of the anti-oxide layer; a plurality of light emitters, each of which is connected to each of the plurality of solders; and an insulation layer disposed in the connection area and formed on the anti-oxide layer. Accordingly, a flexible transparent display sheet having an integrally formed power connector may be provided.

Provided is a mobile terminal including a graphic memory that includes multiple graphic memory areas in which different pieces of image data are stored, and that provides pieces of first image data that are stored in one or several graphic memory areas that are selected according to a control command; a display unit that is switchable between an activated state and an inactivated state, and to which an image that corresponds to the first image data is output, in the inactivated state; a controller that generates the control command, based on the size of the image, and that controls the display unit in such a manner that the image which corresponds to the first image data is output; and a power source unit that applies a power to a graphic memory area that is selected from among the multiple graphic memory areas, according to the control channel.

A power module includes a circuit board and a load group. The load group is installed on the circuit board. The load group includes a first-stage power conversion circuit, a second-stage power conversion circuit and plural loads. The first-stage power conversion circuit converts an input voltage into a transition voltage. The second-stage power conversion circuit converts the transition voltage into a driving voltage. A rated value of the first input voltage is higher than twice a rated value of the transition voltage. A rated value of the driving voltage is lower than a half of the rated value of the transition voltage. The distance between the input terminal of the second-stage power conversion circuit and the output terminal of the first-stage power conversion circuit is smaller than the distance between the input terminal of the first-stage power conversion circuit and each edge of the circuit board.

A power module includes a circuit board and a load group. The load group is installed on the circuit board. The load group includes a first-stage power conversion circuit, a second-stage power conversion circuit and plural loads. The first-stage power conversion circuit converts an input voltage into a transition voltage. The second-stage power conversion circuit converts the transition voltage into a driving voltage. A rated value of the first input voltage is higher than twice a rated value of the transition voltage. A rated value of the driving voltage is lower than a half of the rated value of the transition voltage. The distance between the input terminal of the second-stage power conversion circuit and the output terminal of the first-stage power conversion circuit is smaller than the distance between the input terminal of the first-stage power conversion circuit and each edge of the circuit board.

The present application refers to a control method and control device of a drive circuit, and a drive circuit. The control method of the drive circuit includes: acquiring a bus address in a bus signal. The bus signal is a signal transmitted over an I2C bus, and the I2C bus is connected to a timing controller. The control method further includes: if the timing controller determining that the bus address matches an address of the timing controller, transmitting a frequency adjustment signal to a controllable power supply with an adjustable operating frequency and connected to the timing controller. The frequency adjustment signal is configured to indicate that an operating frequency of the controllable power supply is adjusted from a first operating frequency to a second operating frequency. The second operating frequency is higher than the first operating frequency.

In example implementations, a monitor is provided. The monitor includes a timing controller coupled to a circuit board. A light emitting diode (LED) driver is coupled to the circuit board to power a plurality of LED backlights of the monitor. A scalar processor is coupled to the circuit board and in communication with the timing controller. A controller is coupled to the circuit board and in communication with the scalar processor. The controller receives power and video data via a single cable coupled to a host device.

A display device includes a diode bridge configured to rectify input power; a power factor correction (PFC) circuit configured to control a power factor of the input power rectified by the diode bridge; a direct current (DC)/DC converter configured to change voltage of the input power received through the PFC circuit; and a PFC controller connected to the diode bridge and configured to selectively turn on or off the PFC circuit based on terminal voltages of lower diodes included in the diode bridge.