Abstract: A pixel circuit includes an OLED having a cathode coupled to a power source voltage, a first transistor having a second electrode coupled to an anode of the OLED, and a gate electrode coupled to a gate control-line, a second transistor having a second electrode coupled to a first electrode of the first transistor, a third transistor having a first electrode coupled to another power source voltage, a second electrode coupled to a first electrode of the second transistor, and a gate electrode coupled to a gate control-line, a fourth transistor having a first electrode coupled to a gate electrode of the second transistor, a second electrode coupled to the anode of the OLED, and a gate electrode coupled to a scan-line, and a capacitor coupled between the gate electrode of the second transistor and the second electrode of the third transistor.

Abstract: Embodiments may provide a scan driver including a plurality of stages for simultaneously outputting first scan signals in a simultaneous driving period and for progressively outputting second scan signals in a progressive driving period, wherein each of the stages includes a first signal processing unit coupled to an input terminal, a first clock terminal, a third clock terminal, an auxiliary terminal, a first power source terminal, and a second power source terminal to output a first output signal and a second output signal, and a second signal processing unit coupled to a second clock terminal and the first power source terminal to receive the first output signal and the second output signal and to output a first scan signal and a second scan signal to an output terminal.

Abstract: A pixel has a simple structure and compensates for a threshold voltage of a driving transistor. An organic light emitting display device includes the pixel, which includes: an organic light emitting diode; a first transistor having a second electrode coupled to the organic light emitting diode and a first electrode coupled to a data line; a second transistor between a gate electrode and the second electrode of the first transistor and turned on when a scan signal is supplied to a scan line; and a storage capacitor electrically coupled between the gate electrode of the first transistor and a first power supply.

Abstract: An organic light emitting display device is capable of securing sufficient compensation period such that a threshold voltage of a driving transistor may be compensated. A pixel includes: an organic light emitting diode; a second transistor for controlling an amount of current supplied from a first power source to the organic light emitting diode; a first capacitor having a first terminal coupled to a gate electrode of the second transistor; a first transistor coupled between a second terminal of the first capacitor and a data line, and being configured to turn on when a scan signal is supplied to a scan line; and a third transistor coupled between a gate electrode and a second electrode of the second transistor and having a turning-on period that is not overlapped with that of the first transistor. The third transistor is configured to turn on for a longer time than the first transistor.

Abstract: An organic light emitting display device is capable of securing sufficient compensation period such that a threshold voltage of a driving transistor may be compensated. A pixel includes: an organic light emitting diode; a second transistor for controlling an amount of current supplied from a first power source to the organic light emitting diode; a first capacitor having a first terminal coupled to a gate electrode of the second transistor; a first transistor coupled between a second terminal of the first capacitor and a data line, and being configured to turn on when a scan signal is supplied to a scan line; and a third transistor coupled between a gate electrode and a second electrode of the second transistor and having a turning-on period that is not overlapped with that of the first transistor. The third transistor is configured to turn on for a longer time than the first transistor.

Abstract: An organic light emitting display includes a plurality of pixels. Each pixel includes an organic light emitting diode, a first driver, and a second driver. The first driver supplies a predetermined current to the OLED based on a current data signal or first data signal. The second driver is coupled between the first driver and OLED, and controls the coupling between the first driver and OLED based on a second data signal.

Abstract: A pixel circuit including an organic light emitting diode. Also, the pixel circuit includes: a second transistor connected to a first scanning line, a data line, and a first node; a fifth transistor connected to a third scanning line, the first node, and a second node; a fourth transistor connected to a second scanning line, a first reference voltage, and the second node; a third transistor connected to the first scanning line, a second reference voltage, and a third node; a first capacitor connected between the first node and the second node; a second capacitor connected between the second node and the third node; and a first transistor connected to the first node, a first power, and the third node, and configured to drive the organic light emitting diode.

Abstract: A pixel includes an organic light emitting diode; a first transistor; a second transistor coupled to a data line and turned on when a scan signal is supplied to an ith scan line; a third transistor between the second transistor and a gate electrode of the first transistor and turned on when a scan signal is supplied to an i+1th scan line; a fourth transistor between the gate electrode of the first transistor and a reference power supply and turned on when the scan signal is supplied to the ith scan line; a fifth transistor between the organic light emitting diode and an initial power supply and turned on when a control signal is supplied; a first capacitor between the organic light emitting diode and a node between the second transistor and the third transistor; and a second capacitor between the node and the gate electrode of the first transistor.

Abstract: An organic light emitting display device for improving the yield and for reducing or minimizing manufacturing costs. The organic light emitting display device includes: a data driver coupled to data lines that are formed on the panel; a scan driver mounted on the panel and coupled to scan lines that are formed on the panel; input lines for receiving clock signals from the outside; first connecting lines overlapped with a cathode electrode and electrically coupled to the input lines and for supplying the clock signals to the scan driver; second connecting lines electrically coupled to the input lines; and third connecting lines for electrically coupling the first connecting lines to the second connecting lines.

Abstract: An organic light emitting display device includes: a plurality of pixels at crossing regions of a plurality of scan lines and data lines; a first control line and a second control line commonly connected with the plurality of pixels; a control line driver configured to supply a first control signal to the first control line and a second control signal to the second control line, where the second control signal is not concurrent with the first control signal; and a first power supply that supplies a first power to each of the plurality of pixels, where a voltage level of the first power is configured to change at least once during a frame period for each of the pixels.

Abstract: A pixel includes an organic light emitting diode (OLED) having a cathode electrode coupled to a second power source, a first transistor for controlling an amount of current that flows from a first power source to the second power source via the OLED corresponding to a data signal, a second transistor coupled between a data line and a gate electrode of the first transistor, a third transistor coupled between the gate electrode of the first transistor and a reference power source, a fourth transistor coupled between the third transistor and the reference power source, a fifth transistor coupled between an anode electrode of the OLED and an initial power source, a first capacitor coupled between the anode electrode of the OLED and a node between the third transistor and the fourth transistor, and a second capacitor coupled between the node and the gate electrode of the first transistor.

Abstract: A stage circuit includes a progressive driver and a concurrent driver, and a scan driver includes a plurality of stage circuits that are capable of supplying a scan signal to scan lines progressively and concurrently (e.g., simultaneously).

Abstract: A flat panel display including a semiconductor circuit, and a method of manufacturing the semiconductor circuit are disclosed. In one embodiment, the semiconductor circuit includes i) a substrate, ii) a semiconductor layer and a first capacitor electrode formed on the substrate, the first capacitor electrode being doped to be conductive, iii) an insulating layer covering the semiconductor layer and the first capacitor electrode, iv) a gate electrode disposed on the insulating layer and corresponding to a portion of the semiconductor layer, and v) a second capacitor electrode disposed on the insulating layer and corresponding to the first capacitor electrode, wherein the gate electrode is thicker than the second capacitor electrode.

Abstract: An organic light emitting display device operates for an initializing period, a scan period and an emission period divided from one frame period. The organic light emitting display device includes: a data driver for supplying data signals to output lines; a connecting unit for selectively coupling a data line of data lines to a corresponding one of the output lines or an initial power supply, and being positioned between the output lines and the data lines; a second power driver for applying second power having a low level and a high level to pixels positioned at crossing regions of scan lines and the data lines; and a first control line commonly coupled to the pixels, in which each of the pixels includes an organic light emitting diode, and an anode electrode of the organic light emitting diode is supplied with a voltage of the initial power supply for the initializing period.

Abstract: A pixel includes: an OLED; a first transistor having a first electrode coupled to a power source and a second electrode coupled to the OLED and configured to control a magnitude of current supplied to the OLED; a third transistor having a first electrode coupled a first node and a second electrode coupled to a gate electrode of the first transistor; a capacitor coupled between the first node and a second electrode of the first transistor; a second transistor having a first electrode coupled to the first node and a second electrode coupled to a data line and configured to be turned on when the third transistor is turned off; and a fourth transistor having a first electrode coupled to a gate electrode of the first transistor and a second electrode coupled to a reference power source and configured to be turned on and off concurrently with the second transistor.

Abstract: A pixel capable of displaying images with substantially uniform luminance and an organic light emitting display device using the same are provided. An organic light emitting display device is driven in a frame divided into a reset period, a compensation period and an emission period. The organic light emitting display device includes pixels coupled to scan lines and data lines. First and second control lines are commonly coupled to the pixels. A control line driver supplies first and second control signals to the respective first and second control lines. A scan driver concurrently supplies a scan signal to the scan lines during a time in the reset and compensation periods. A data driver supplies a reset voltage to the data lines during the time in the reset and compensation periods.

Abstract: An organic light emitting display device includes a scan driver for sequentially supplying a scan signal through scan lines; a data driver for supplying an initial power through data lines during a first period of a time period when the scan signal is supplied through a corresponding scan line of the scan lines, and for supplying data signals to the data lines during a second period of the time period when the scan signal is supplied through the corresponding scan line, the second period following the first period; and pixels at crossing regions of the scan lines and the data lines.

Abstract: An organic light emitting display includes a pixel unit having pixels coupled to scan lines, first control lines, second control lines, data lines, and first and second power sources, a control line driver for providing a first control signal and a second control signal to the pixels through the first control lines and the second control lines, a scan driver for providing scan signals to the pixels through the scan lines, and a data driver for providing data signals to the pixels through data lines. The scan driver simultaneously supplies a first scan signal to the pixels through the scan signals. In the organic light emitting display, deviation in the threshold voltages of the driving transistors included in the pixels is compensated without a power swing so as to display an image with uniform brightness.

Abstract: An organic light emitting display device compensates for a variation of the threshold voltage of a driving transistor. A scan driver and a data driver drive a plurality of pixels. A pixel of the pixels includes an organic light emitting diode, four transistors, and two capacitors. A first transistor controls a current to the organic light emitting diode. Second and third transistors are coupled between a data line from the data driver and a gate electrode of the first transistor. A fourth transistor is coupled between a reference power supply and the gate electrode of the first transistor. The two capacitors are coupled between the organic light emitting diode and respective electrodes of the third transistor.

Abstract: A pixel circuit includes an OLED having a cathode coupled to a power source voltage, a first transistor having a second electrode coupled to an anode of the OLED, and a gate electrode coupled to a gate control-line, a second transistor having a second electrode coupled to a first electrode of the first transistor, a third transistor having a first electrode coupled to another power source voltage, a second electrode coupled to a first electrode of the second transistor, and a gate electrode coupled to a gate control-line, a fourth transistor having a first electrode coupled to a gate electrode of the second transistor, a second electrode coupled to the anode of the OLED, and a gate electrode coupled to a scan-line, and a capacitor coupled between the gate electrode of the second transistor and the second electrode of the third transistor.