A power converter includes a voltage conversion unit that provides a first driving voltage at a first output electrode by converting a power supply voltage in response to a first control signal, the voltage conversion unit being configured to provide a second driving voltage at a second output electrode by converting the power supply voltage after a short detection period, the voltage conversion unit being configured to shut down in response to a third control signal, and a short detection unit that generates the third control signal by comparing a magnitude of a voltage of the second output electrode with a magnitude of a reference voltage during the short detection period.

A shift register, a method for driving the shift register and a display apparatus are provided. The shift register includes a noise reduction control circuit and a pull-up node noise reduction circuit. The noise reduction control circuit is connected with a first clock signal terminal that receives a first clock signal, a gate drive signal output terminal that outputs a gate drive signal, a noise reduction control terminal, and a noise reduction control node. The pull-up node noise reduction circuit is connected with the noise reduction control circuit, the noise reduction control terminal, and a pull-up node.

The present disclosure provides a voltage controlling circuit of a T-CON load variation, a display panel and a display device. The voltage controlling circuit of the T-CON load variation includes: a power source chip and a voltage controlling circuit, and the voltage controlling circuit includes a photoelectric coupler, a first comparator, a second comparator, a first field effect transistor and a second field effect transistor. Therefore, the technical scheme of the present disclosure has an advantage that the Vcore may automatically vary with a variation of the load.

A display apparatus for displaying a display information includes a display panel, and a plurality of gate drivers and a plurality of source drivers coupled to the display panel. When one abnormal driver exists among the plurality of gate drivers and the plurality of source drivers, the other functionally operating gate drivers and source drivers transform the display information into a transformed display information to transmit the transformed display information to the display panel for a display operation.

A display apparatus for displaying a display information includes a display panel, and a plurality of gate drivers and a plurality of source drivers coupled to the display panel. When one abnormal driver exists among the plurality of gate drivers and the plurality of source drivers, the other functionally operating gate drivers and source drivers transform the display information into a transformed display information to transmit the transformed display information to the display panel for a display operation.

Provided are a display including a very-small light-emitting diode (LED) and a method of manufacturing the same. The display includes a panel in which a first signal line and a second signal line are disposed in a lattice form, an LED module including an electrode assembly having a first electrode connected to the first signal line and the second signal line and a second electrode connected to a ground, and a plurality of very-small LEDs connected to the first electrode and the second electrode, and two or more switches which connect the first signal line and the second signal line to the first electrode, wherein the second electrode is connected to a common electrode formed on the panel, at least one other LED module is grounded to the common electrode, and the two or more switches selectively provide a current supplied through the first signal line to the first electrode on the basis of a signal of the first signal line and a signal of the second signal line.

A pixel may include an organic light emitting diode (OLED) with a cathode electrode coupled to a second power source, a first transistor with a first electrode coupled to a data line, with a second electrode coupled to a first node, the first transistor being turned on when a scan signal is supplied to a scan line, a first capacitor coupled between the first node and a third power source to charge a first capacitor voltage corresponding to a data signal supplied from the data line, and a pixel circuit charged by the first capacitor voltage to supply current corresponding to a charged first power source voltage from a first power source to the second power source via the OLED.

A method for determining positions of fingers of a user is described. The method includes transmitting a power signal from a head mounted display (HMD) to provide power to a plurality of light emitters. The light emitters emit light in a sequence upon receiving the power signal. The method includes using the light emitted by the light emitters to determine a plurality of positions of the light emitters. The positions are used to play a game using the HMD.

This disclosure relates to a DC-DC conversion control module, a DC-DC converter, and a display device. The DC-DC conversion control module includes a voltage input terminal, a control voltage output terminal, and a control sub-module; the control sub-module includes a delay unit, a switch unit, and an output control unit; the delay unit is configured to output a trigger signal after delaying for a time length; the switch unit is configured to, when receiving the trigger signal, make the path between the voltage input terminal and the input terminal of the output control unit be conducted; and the output control unit is configured to output a control voltage. Embodiments of the disclosure can realize adjustable delaying with respect to the output voltage of the DC-DC converter.

A power converter may include the following elements: an input terminal for receiving an input voltage; an output terminal for providing an output voltage; a reference member for receiving a reference voltage; a first transistor electrically connected between the reference member and the input terminal; a second transistor electrically connected between the input terminal and the output terminal; a diode electrically connected in parallel with the second transistor; and a controller for selecting a first mode if the input voltage is greater than a first reference voltage level and for selecting a second mode if the input voltage has been less than a second reference voltage level for a reference time period. The first transistor and the diode may generate the output voltage in the first mode. The first transistor and the second transistor may generate the output voltage in the second mode.