Abstract: A display device includes: a plurality of pixels; a degradation compensator for using a temperature weight value for a reference temperature, a luminance weight value for a reference luminance, and a material weight value for a reference material, for calculating a reference using time when a degradation rate of the pixels is changed to a reference degradation rate of a reference degradation curve, and for generating a control variable according to the reference using time; and a power supply for controlling a voltage difference between a first power source voltage for supplying a driving current to the pixels and a second power source voltage according to the control variable.

Abstract: A display device includes: a plurality of pixels; a degradation compensator for using a temperature weight value for a reference temperature, a luminance weight value for a reference luminance, and a material weight value for a reference material, for calculating a reference using time when a degradation rate of the pixels is changed to a reference degradation rate of a reference degradation curve, and for generating a control variable according to the reference using time; and a power supply for controlling a voltage difference between a first power source voltage for supplying a driving current to the pixels and a second power source voltage according to the control variable.

Abstract: A first reference voltage is applied to a plurality of pixels during a data writing period when data is written and a second reference voltage is applied to the plurality of pixels during a light emitting period when the plurality of pixels emit light, in which each of the plurality of pixels includes a switching transistor to transfer a data voltage applied to a data line to a first node; a driving transistor controlling a driving current flowing into an OLED according to the voltage of the first node and a first power supply voltage; and a storage capacitor including a first electrode connected to the first node and a second electrode receiving one of the first reference voltage and the second reference voltage. A difference between the first reference voltage and the second reference voltage is determined according to a threshold voltage deviation characteristic of the display unit.

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 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: A display device and a driving method thereof that can prevent distortion of luminance characteristics upon application of an ACL algorithm are disclosed. The display device includes a signal controller configured to correct luminance data according to the difference between image data of a current frame and image data of a previous frame.

Abstract: The present invention is to provide an apparatus for driving a flat panel display which allows the amount of electrons emitted from a cell to be easily controlled and which performs a stable display gradation processing. To this end, the present invention comprises a shift register for sequentially shifting a video signal input from the exterior in synchronism with a clock signal; a latch for temporarily storing and outputting said video signal which has been sequentially inputted from said shift register; an AND gate for adjusting the time of outputting said video signal output from said latch; and an output driving circuit for inputting said video signal from said AND gate and performing a display gradation control. The present invention allows the amount of electrons emitted from a cell to be easily adjusted so that a 16 step of gradation processing of a display is made possible.

Abstract: A cell driving device of a field emission display according to a passive matrix addressing method having a field emission pixel cell with a cathode (10) and a gate electrode (12) for emitting electrons from the cathode. The cell driving device includes at least two current sources (18, 20) disposed to provide a current signal to the cathode; and a controlling part (22) for selectively driving at least two current sources (18, 20) according to the size of a video signal.

Abstract: A flat display driving includes a gate driving circuit for sequentially and selectively applying a high voltage to a plurality of gate lines to drives them; a data driving circuit which includes a shift register for sequentially inputting one line of pixel data, a current source array which inputs on line of pixel data from the shift register, generates one line of current signals corresponding to each logic value of the pixel data and applies one line of current signals to the data lines and a latch type transmission array connected between the shift register and the current source array, for adjusting the supply time of one line of pixel data to be applied to the current source array, thereby driving the pixels on one horizontal line of the field emission display by the current signals for a predetermined time period; and a control circuit which processes a video signal into a series type of pixel data, supplies it to the data driving circuit and generates control signals required for the data driving circu

Abstract: A cell driving device of a field emission display having a field emission pixel cell with a cathode (10) for emitting electrons and a gate electrode (12) for focusing and accelerating the electrons emitted from the cathode.