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: A scan driving device includes scan driving blocks, each including: a first node receiving a signal that is input to a first driving signal input terminal according to a clock signal input to a first clock signal input terminal; a second node receiving a second power source voltage according to the clock signal input to the first clock signal input terminal and a signal input to a second driving signal input terminal; a first transistor including a gate electrode connected to the second node and an electrode receiving an output control signal; a second transistor including a gate electrode connected to the first node and an electrode connected to a second clock signal input terminal; and a third transistor including a gate electrode connected to the second node, an electrode connected to a first power source voltage, and another electrode connected to the first node.

Abstract: An OLED display device includes a substrate; an organic light emitting element having a first electrode formed on the substrate, an organic emission layer disposed on the first electrode, and a second electrode disposed on the organic emission layer; a common power bus line disposed between the organic light emitting element and an edge of the substrate on the substrate and electrically connected with the first electrode; a driving power bus line neighboring the common power bus line on the substrate, disposed between the organic light emitting element and the edge of the substrate, and electrically connected with the second electrode extended from a portion corresponding to the organic emission layer; and a connection wire made of the same material as the second electrode on the common power bus line, separated from the second electrode, and electrically connected with the common power bus line.

Abstract: An organic light emitting display includes pixels coupled to scan lines, first control lines, second control lines, data lines, and first and second power sources. The organic light emitting display further includes 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 control line driver simultaneously supplies a first off control signal to the pixels through the first control lines in a first period, simultaneously supplies a reference voltage to the pixels through the first control lines in a second period, and simultaneously supplies a first on control signal to the pixels through the first control lines in a third period.

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 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: Provided is a flat display device, and more particularly, an active matrix (AM) flat display device having a thin film transistor (TFT). The flat display device includes a substrate, a plurality of TFTs (thin film transistors) provided on the substrate, each TFT comprising an active layer, a source electrode and a drain electrode that contact the active layer, and an ohmic contact layer interposed between the active layer and the source and drain electrodes, and a light emitting device electrically connected to the TFT, wherein the ohmic contact layer and a layer including the source and drain electrodes are formed to have the same pattern.

Abstract: A pixel circuit includes: an OLED; a second transistor including gate, first, and second terminals coupled to a first scan line, a data line, and a first node, respectively; a fourth transistor including gate, first, and second terminals coupled to a third scan line, the first node, and a second node, respectively; a third transistor including gate, first, and second terminals coupled to a second scan line, a reference power source, and the second node, respectively; a fifth transistor including gate, first, and second terminals coupled to a light emission control line, a third node, and an anode of the OLED, respectively; a first capacitor coupled between the first and second nodes; a second capacitor coupled between the second and third nodes; and a first transistor including gate, first, and second terminals coupled to the first node, a first power source, and the third node, respectively.

Abstract: An inverter is capable of improving the reliability of driving. The inverter includes a first transistor coupled between a first power source and an output terminal of the inverter and having a gate electrode coupled to a first input terminal of the inverter, a second transistor coupled between a second power source and the output terminal, and having a gate electrode coupled to a second input terminal of the inverter, a first capacitor coupled between the gate electrode of the first transistor and the first input terminal, a second capacitor coupled between the gate electrode of the second transistor and the second input terminal, a third transistor coupled between the gate electrode of the first transistor and a reset power source, and a fourth transistor coupled between the gate electrode of the second transistor and the reset power source.

Abstract: An organic light emitting display device capable of improving image quality on a large panel. The organic light emitting display device includes a panel divided into at least two regions including a first region crystallized by a first crystallization process and a second region crystallized by a second crystallization process, in which a boundary part of the first and second regions is subject to both the first crystallization process and the second crystallization process, and further includes: organic light emitting diodes at crossing regions of scan lines and data lines; and pixel circuits at the crossing regions and configured to supply currents to the organic light emitting diodes. Here, couplings between the pixel circuits within the first region and the boundary part and their respective organic light emitting diodes are different from couplings between the pixel circuits within the second region and their respective organic light emitting diodes.

Abstract: 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.

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, in which one frame is divided into an initializing period, a compensation period, a scan period, and an emission period, includes pixels at intersections of scan lines and data lines, the pixels coupled to a first power source and a second power source, a scan driver simultaneously supplying scan signals to the scan lines for a partial period of the initializing period, the scan driver simultaneously supplying scan signals to the scan lines for the compensation period, and the scan driver sequentially supplying scan signals to the scan lines for the scan period, a data driver supplying data signals to the data lines in synchronization with the scan signals supplied for the scan period, and a first power source driver supplying the first power source, the first power source having different voltage levels for the initializing period, the scan period, and the emission period.

Abstract: A method of manufacturing the organic light emitting display includes selectively etching an interlayer insulating layer and a gate insulating layer so that a source region and a drain region of a semiconductor layer of a sub pixel unit are exposed and removing the interlayer insulating layer and the gate insulating layer in a data line forming region of a data line unit so that a buffer layer at the data line forming region of the data line unit is exposed, and forming a source electrode and a drain electrode coupled to the exposed semiconductor layer of the sub pixel unit and forming a data line on the exposed buffer layer of the data line forming region of the data line unit.

Abstract: An organic light emitting display includes pixels coupled to scan lines, first control lines, second control lines, data lines, and first and second power sources. The organic light emitting display further includes 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 control line driver simultaneously supplies a first off control signal to the pixels through the first control lines in a first period, simultaneously supplies a reference voltage to the pixels through the first control lines in a second period, and simultaneously supplies a first on control signal to the pixels through the first control lines in a third period.

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 includes a pixel unit including pixels coupled to scan lines, control lines, data lines, and first and second power sources, a control line driver for providing control signals to the pixels through the control lines, a scan driver for providing scan signals to the pixels through the scan lines, a data driver for providing data signals to the pixels through data lines, and a first power source driver for applying the first power source to the pixels. The first power source driver sets the first power source as a voltage in a low level in a first period in one frame period. The first power source is set as a high level voltage in second and third periods in one frame period. Therefore, it is possible to compensate for deviation in the threshold voltages generated between the driving transistors included in the pixels.

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 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 includes an organic light emitting diode formed on a substrate, coupled to a transistor; a photodiode formed on the substrate and including a semiconductor layer including a high-concentration P doping region, an intrinsic region with defects and a high-concentration N doping region; and a controller that uniformly controls the luminance of light emitted from the organic light emitting diode by controlling a voltage applied to the first electrode and the second electrode according to the voltage outputted from the photodiode.