Abstract: An OLED display according to an exemplary embodiment includes: a substrate; a plurality of thin film transistors formed on the substrate; unit pixels formed on the thin film transistors and including first to third organic emission layers which are at least parts of respective sub-pixels; a first common electrode formed on the first organic emission layer; a second common electrode formed on the second organic emission layer; and a third common electrode formed on the third organic emission layer, wherein the first and second common electrodes are electrically insulated from each other.

Abstract: A display device includes a power line configured to transmit an electric current. The display device further includes a plurality of pixel electrode units associated with a single pixel of the display device and configured to share the electric current. The display device further includes a common electrode overlapping the plurality of pixel electrode units. The display device further includes a plurality of light-emitting units associated with the single pixel of the display device and disposed between the common electrode and the plurality of pixel electrode units, wherein each light-emitting unit of the plurality of light-emitting units overlaps a pixel electrode unit of the plurality of pixel electrode units.

Abstract: A controller for a display panel may include a first supply circuit to output first and second driving voltages to a sub-pixel of a first color; and a second supply circuit to output third and fourth driving voltages to a sub-pixel of a second color. The first driving voltage may be greater than the second driving voltage, and the third driving voltage may be greater than the fourth driving voltage. Also, at least three of the first, second, third, and fourth driving voltages may be different from one another.

Abstract: Provided are a display apparatus and a method of operating the display apparatus that generate data signals that compensate for a deviation of a first power supply voltage output from a direct current (DC)-DC converter.

Abstract: A power control system includes a display module for displaying an image in accordance with image data, a DC-DC converter being external to the display module and for applying power to the display module, a host for generating a control signal for controlling the display module and outputting the control signal through a signal output pin of signal input/output pins of the host, and a connector connected to the signal input/output pins and for applying the control signal to the DC-DC converter and the display module. The DC-DC converter is adapted to apply power to the display module according to the control signal. Accordingly, the number of signal input/output pins of the connector can be reduced.

Abstract: An organic light emitting diode (OLED) display includes a display unit including a plurality of pixels, a plurality of scan lines, and a plurality of data lines, a data driver transmitting a plurality of data signals to the plurality of data lines, a scan driver transmitting a plurality of scan signals to the plurality of scan lines, a compensation controller supplying a predetermined first current to each OLED in each of the plurality of pixels during a sensing period for measuring a driving voltage of the OLED for each of a plurality of pixels, receiving the driving voltage of the OLED supplied with the first current, and outputting measuring data for the transmitted driving voltage; and a signal controller compensating an input video signal according to the measuring data to generate image data. The compensation controller is separate from and external to the data driver.

Abstract: A display device includes a plurality of pixels, each of said plurality of pixels includes a driving transistor and a light emitting diode, a compensator to receive first and second pixel currents generated by the plurality of pixels according to first and second data voltages respectively applied to the plurality of pixels, the compensator to calculate an image data compensation amount to compensate for variations in characteristics of the driving transistor of each of said plurality of pixels and a data selector to transmit the first and second data voltages to the plurality of pixels and to transmit the first and second pixel currents to the compensator, the compensator to measure the first and second pixel currents generated as a result of the first and second data voltages corresponding to different gray scale levels and to calculate an actual threshold voltage and mobility of the driving transistor of each of the pixels, the compensator including a measurement resistor, the compensator to control a resi

Abstract: An organic light emitting diode (OLED) display is disclosed. According to one aspect, the OLED display includes pixels including an OLED and a driving transistor for supplying a driving current according to an image data signal to the OLED. The display includes a sensor configured to sense a first current flowing to the driving transistor corresponding to a source data input signal. An operation voltage of a saturation region of the driving transistor is measured based on performance information of the OLED by using the same current amount as the first current. A voltage controller is configured to determine a minimum electroluminescence voltage for driving the pixels based on information received from the sensor. A power supply is configured to control a power source voltage applied to the pixels according to the determined electroluminescence voltage, and supply the determined power source voltage.

Abstract: A scan driver includes: a plurality of scan driving blocks including an output terminal outputting a scan signal to a scan line; a first transistor transmitting a voltage of a power source to the output terminal; a second transistor transmitting a clock signal to the output terminal; and a third transistor including a gate electrode connected to a node formed with a gate-on voltage turning on the second transistor, one terminal connected to the power source, and the other terminal connected to the gate electrode of the first transistor. The scan driver may reduce the influence of a leakage current even though application of the scan signal is increased, and a scan signal of a uniform voltage level may be output.

Abstract: An organic light emitting diode display is disclosed. A signal from the pixels in the display is transmitted to a circuit which compensates the image data according to the signal, which is indicative of one or more of ageing of the organic light emitting diodes, the threshold voltages of the driving transistors, and current mobility of the driving transistors.

Abstract: An organic light emitting diode (OLED) display includes a display unit including a plurality of pixels, a plurality of scan lines, and a plurality of data lines, a data driver transmitting a plurality of data signals to the plurality of data lines, a scan driver transmitting a plurality of scan signals to the plurality of scan lines, a compensation controller supplying a predetermined first current to each organic light emitting diode in each of the plurality of pixels during a sensing period for measuring a driving voltage of the organic light emitting diode for each of a plurality of pixels, receiving the driving voltage of the organic light emitting diode supplied with the first current, and outputting measuring data for the transmitted driving voltage; and a signal controller compensating an input video signal according to the measuring data to generate image data. The compensation controller is separate from and external to the data driver.

Abstract: An organic light emitting diode (OLED) display and a driving method thereof include an OLED, a driving transistor supplying a driving current to the OLED, a data line transmitting a data signal to the driving transistor, a first switch including a first electrode connected to one electrode of the OLED and a second electrode connected to the data line, and a second switch including a first electrode connected to the data line and a second electrode connected to the gate electrode of the driving transistor. The first switch is turned on such that a predetermined first current is transmitted to the OLED, the voltage of one electrode of the OLED is received through the data line, the deterioration degree of the OLED is detected according to the transmitted voltage, and the data signal transmitted to the data line is compensated according to the detected deterioration.

Abstract: A display device includes a display having a plurality of pixels, a compensator that for each of a plurality of pixels, calculates an image data compensation amount that compensates a characteristic deviation of a driving transistor of each pixel by measuring the first pixel current generated by the first data voltage and the second pixel current generated by the second data voltage obtained by amending the first data voltage, and initializes a panel capacitor that is parasitic on a plurality of data lines connected to the plurality of pixels in the measurement of the first pixel current and the measurement of the second pixel current; and a signal controller that generates an image data signal by reflecting the compensation amount of the image data.

Abstract: A display device includes a plurality of pixels, each of said plurality of pixels includes a driving transistor and a light emitting diode, a compensator to receive first and second pixel currents generated by the plurality of pixels according to first and second data voltages respectively applied to the plurality of pixels, the compensator to calculate an image data compensation amount to compensate for variations in characteristics of the driving transistor of each of said plurality of pixels and a data selector to transmit the first and second data voltages to the plurality of pixels and to transmit the first and second pixel currents to the compensator, the compensator to measure the first and second pixel currents generated as a result of the first and second data voltages corresponding to different gray scale levels and to calculate an actual threshold voltage and mobility of the driving transistor of each of the pixels, the compensator including a measurement resistor, the compensator to control a resi

Abstract: Provided are a display apparatus and a method of operating the display apparatus that generate data signals that compensate for a deviation of a first power supply voltage output from a direct current (DC)-DC converter.

Abstract: An apparatus for generating power voltages of a display apparatus including a plurality of pixel circuits comprises a storage capacitor power outputting unit configured to generate a storage capacitor power voltage using a first power voltage and apply the storage capacitor power voltage to storage capacitors included in the plurality of pixel circuits, and a gamma filter power outputting unit configured to generate a gamma filter power voltage using the first power voltage and apply the gamma filter power voltage to a gamma voltage generating unit. The first power voltage is generated from a power voltage supplied by a voltage source. The storage capacitor power voltage and the gamma filter power voltage are generated so as to have the same phase.

Abstract: An organic light emitting display device is disclosed. The device includes a data driver for supplying a plurality of data signals and a reset voltage to each output line during every horizontal period. The data driver is configured to selectively supply the reset signal and the reset voltage based on a comparison of the data signal input to each data line during a current horizontal period with the data signal input to the data lines during the previous horizontal period.

Abstract: A power control system includes a display module for displaying an image in accordance with image data, a DC-DC converter being external to the display module and for applying power to the display module, a host for generating a control signal for controlling the display module and outputting the control signal through a signal output pin of signal input/output pins of the host, and a connector connected to the signal input/output pins and for applying the control signal to the DC-DC converter and the display module. The DC-DC converter is adapted to apply power to the display module according to the control signal. Accordingly, the number of signal input/output pins of the connector can be reduced.