Abstract: An organic light emitting diode (OLED) display includes a display unit including first pixels emitting first color light, second pixels emitting second color light, and third pixels emitting third color light, and a power source voltage supplier supplying a driving voltage to the respective pixels of the display unit. The display further includes a first voltage wire transferring the driving voltage to the first pixels, a second voltage wire transferring the driving voltage to the second pixels, and a third voltage wire transferring the driving voltage to the third pixels. The first, second and third voltage wires being provided in a first layer. The display includes auxiliary voltage wires provided in a second layer different from the first layer. Contact areas between the first, second and third voltage wire and the auxiliary voltage wires are different from each other.

Abstract: Exemplary embodiments of the present invention relate to a pixel circuit comprising an organic light emitting diode (OLED), an RS trigger comprising a first terminal connected to a scan line, a second terminal connected to an enable line, and a third terminal connected to a data line, the RS trigger configured to generate an output signal according to an enable signal, a data signal, and a scan signal respectively received via the enable line, the data line, and the scan line, and a driving transistor comprising a first electrode connected to a first power source, a second electrode connected to an anode of the OLED, and a gate electrode connected to an output terminal of the RS trigger, the driver transistor configured to control a current flowing through the OLED in response to the output signal of the RS trigger.

Abstract: An organic light emitting diode (OLED) display and a method of compensating for degradation are disclosed. One inventive aspect includes a panel assembly including a plurality of pixels. Luminance measuring units are formed along a perimeter of the panel assembly to measure luminance of light emitted from the pixels. A processing unit compares the measured luminance data so as to detect and also compensate for a degraded pixel.

Abstract: A display device configured to display a selected image type, the image type including a first image and a second image, according to an image source signal, the display device including: a display unit, the display unit including a first group pixel and a second group pixel; and an image processor, the image processor: arranging image signals for each frame of the display device according to a display sequence of the first image and the second image in the first group pixel and the second group pixel, changing the image type displayed during a remaining period for each frame unit of the image source signal.

Abstract: A pixel circuit includes: an organic light emitting diode (“OLED”); a threshold circuit which generates an output signal based on an input signal, where the threshold circuit has a hysteresis characteristic with respect to the input signal; a first transistor including a first electrode connected to a data line, a second electrode connected to an input terminal of the threshold circuit, and a gate electrode connected to a scan line; and a second transistor including a first electrode connected to a first power, a second electrode connected to an anode of the organic light emitting diode, and a gate electrode connected to an output terminal of the threshold circuit, where the second transistor controls a current amount that flows to the organic light emitting diode from the first power based on the output signal of the threshold circuit.

Abstract: Exemplary embodiments of the present invention disclose a display device, and a method of driving the same. The display device includes a display unit including pixels included in one or more deterioration region groups and pixels included in one or more reference groups corresponding to the deterioration region groups, a sensing unit configured to sense a current flowing through an organic light emitting diode of each of the deterioration region groups and each of the reference groups and provide current information about the deterioration region group and current information about the reference group.

Abstract: A display panel includes input power supply line coupled to a power supply at one or more edge portions of the display panel, and an output power supply line coupled to the input power supply line at a predetermined portion of the display panel. The input power supply line receives the power supply voltage, and the output power supply line receives the power supply voltage from the input power supply line. The power supply is coupled to the output power supply line at the one or more edge portions of the display panel, and receives the power supply voltage from the output power supply line to adjust a voltage level of the power supply voltage based on the power supply voltage from the output power supply line. The predetermined portion is at a location different from an edge of the display panel.

Abstract: An organic light-emitting diode (OLED) display and a method of operating the same are disclosed. In one aspect, the display includes a plurality of pixels each including a pixel circuit and produces grayscale values by adjusting an emission duty based at least in part on image data. The method comprises calculating a voltage drop of a power supply voltage at each of the pixel circuits based at least in part on the image data and extracting a luminance decrement corresponding to the voltage drop for each pixel circuit based at least in part on a voltage-luminance characteristic of the pixels. The method also comprises increasing the emission duty for each pixel based at least in part on the luminance decrement, and driving the pixels based at least in part on the increased emission duty.

Abstract: The self-lighting subpixels of a display device are ones whose output luminances are functions of analog drive voltages applied to the subpixels and corresponding digital grayscale command signals used for controlling the subpixels. The display device generates corresponding analog dimming values and digital dimming values in accordance with supplied current limiting parameters and generates control value signals using the analog dimming values and the digital dimming values. It also changes the original grayscale digital data values of input video signals of one frame in accordance with the digital dimming values.

Abstract: An organic light emitting display is driven in a simultaneous (or concurrent) emission scheme. The organic light emitting display includes: a display unit including a plurality of pixels coupled to scan lines, control lines, and data lines; a control line driver for providing control signals to the pixels through the control lines; and a power driver for applying a power at different levels to the pixels of the display unit during a plurality of periods of one frame. The control signals and the power are concurrently provided to the pixels included in the display unit.

Abstract: An organic light emitting display device includes: a display panel; a timing controller configured to receive image data when a vertical sync signal is activated, to receive reference data corresponding to the image data when the vertical sync signal is deactivated, and to generate an emission control signal in accordance with emission duty information of the reference data; and an emission driver configured to supply first and second emission powers to the display panel, and to control a duration of a period during which a potential difference between the first and second emission powers is greater than or equal to a reference value in accordance with the emission control signal.

Abstract: A display device and a method of generating a data signal in the same are disclosed. In one aspect, the display device includes a display panel including pixels each configured to emit light based on a data signal. The display device also includes a power supply line configured to receive a power supply voltage from a power supply, the power supply configured to apply the power supply voltage to at least one sample pixel through the power supply line. The display device further includes a data signal generator that generates the data signal based at least in part on image data, calculate a voltage drop of the power supply voltage based on a measured level of the power supply voltage, and control the data signal based at least in part on the calculated voltage drop.

Abstract: An organic light emitting display is driven in a simultaneous (or concurrent) emission scheme. The organic light emitting display includes: a display unit including a plurality of pixels coupled to scan lines, control lines, and data lines; a control line driver for providing control signals to the pixels through the control lines; and a power driver for applying a power at different levels to the pixels of the display unit during a plurality of periods of one frame. The control signals and the power are concurrently provided to the pixels included in the display unit.

Abstract: A display device includes a display panel including a plurality of pixels, a control unit configured to scale image data provided from the outside based on an image load factor and to output the scaled image data, and a data driver configured to supply data signals corresponding to the scaled image data to a plurality of data lines connected to the pixels, wherein the control unit includes a load factor calculating unit configured to calculate a load factor of the image data; and a data scaler configured to scale a gray level of the image data based on a scaling ratio corresponding to a load factor.

Abstract: An organic light-emitting display device and a method of driving the display device are disclosed. A pixel circuit used in the organic light-emitting display device includes a first switching transistor, a second switching transistor and a driving transistor. The first switching transistor switches a data voltage in response to a first control signal. The second switching transistor switches a compensation voltage in response to a second control signal. The driving transistor provides an electric current to an organic light-emitting device in response to the data voltage and the compensation voltage.

Abstract: An organic light emitting display apparatus includes: a plurality of pixels, each of the pixels including a light emitting device and a driving transistor configured to supply a driving current to the light emitting device based on a scan signal and a data signal; and a plurality of power lines configured to transfer a power voltage supplied from a global power line to the driving transistor of each of the pixels, wherein a level of a gate voltage of the driving transistor when the light emitting device emits light is determined by a distance between a corresponding one of the pixels and the global power line.

Abstract: Provided is an organic light emitting display device including: a display panel including data lines, scan lines, and pixels coupled to the data lines and the scan lines; a digital data converter configured to calculate a panel load utilizing digital video data, and to convert the digital video data such that peak luminance of the pixels have a maximum value when the panel load is equal to or less than a limit value; a data driver configured to convert digital conversion data, which has been converted by the digital data converter, into data voltages, and to supply the data voltages to the data lines; and a scan driver configured to provide scan signals to the scan lines.

Abstract: A display device comprises a signal processor configured to generate left-eye and right-eye image data according to an input image signal, a frame rate controller configured to generate a plurality of left-eye and right-eye image data from the left-eye and right-eye image data according to an output frequency, a data formatter configured to alternately organize the plurality of left-eye and right-eye image data generated by the frame rate controller, and a display unit configured to sequentially display the plurality of left-eye and right-eye image data organized by the data formatter.

Abstract: An organic light emitting display includes a display unit that includes pixels coupled to scan lines, control lines, and data lines; a control line driver for providing control signals to the respective pixels through the control lines; a first power driver for applying a first power to the pixels of the display unit; and a second power driver for applying a second power to the pixels of the display unit, wherein the first power and/or the second power is applied to the pixels of the display unit, having voltage values at different levels, during periods of one frame, and the control signals and the first and second powers are concurrently provided to all of the pixels.

Abstract: A pixel electrode and a direction control electrode capacitively coupled to the pixel electrode are provided in a pixel. A pixel thin film transistor is connected to a gate line, a data line, and the pixel electrode. A direction control electrode thin film transistor is connected to a previous gate line, a previous data lines or a next data line, and the direction control electrode. The gate lines are supplied with scanning signals, and each scanning signal includes first and second pulses in a frame. The first pulse of a scanning signal is synchronized with the second pulse of a previous scanning signal.