Abstract: An organic light emitting display capable of preventing erroneous emission from being generated at the initial stage of driving the organic light emitting display and a method of driving the same. The organic light emitting display includes a display unit including data lines, scan lines, emission control lines, and pixels coupled to the data lines, the scan lines, and the emission control lines. A data driver is coupled to the data lines for transmitting data signals. A scan driver is coupled to the scan lines for transmitting scan signals. An emission control driver is coupled to the emission control lines for transmitting emission control signals. A controller is provided for transmitting a plurality of control signals for controlling the data driver, the scan driver, and the emission control driver, and outputting a first control signal for preventing currents from flowing to organic light emitting diodes of the pixels.

Abstract: Embodiments relate to a defect detecting method of a line and a demultiplexer, a defect detecting device, and a display panel including the defect detecting device. A demultiplexer may connect a plurality of data lines to a plurality of corresponding lines. The defect detecting device includes DC lines supplied with respective DC voltages, first switches connected to the DC lines and configured to transmit the respective DC voltages to the corresponding first data lines among a plurality of data lines according to a first gate signal, and second switches connected to the first to third DC lines and configured to transmit one of the respective DC voltages to corresponding second data lines among a plurality of data lines according to a second gate signal.

Abstract: A thin film transistor, a pixel, and an organic light emitting diode (OLED) display including the same are disclosed. The thin film transistor includes a connection to the channel region separate from connections to the source and drain.

Abstract: An organic light emitting display which prevents unnecessary illumination of the organic light emitting diodes is disclosed. The display has an emission driver which globally turns off all of the pixels during an initialization period, and allows normal operation during other times.

Abstract: A display device includes: a display unit including pixels coupled to scan lines for transmitting scan signals, data lines for transmitting data signals, and light emission control lines for transmitting light emission control signals; a scan driver; a data driver; and a light emission driver. Each pixel includes: an OLED; a driving transistor to transmit a driving current corresponding to a data signal to the OLED; a first transistor to transmit the data signal to the driving transistor according to a first scan signal; a second transistor to apply a first power source voltage to a first electrode of the driving transistor according to a second scan signal, during an initialization period for initializing a gate electrode voltage of the driving transistor; and a capacitor including a first electrode coupled to a gate electrode of the driving transistor and a second electrode coupled to a first power source supply.

Abstract: An organic light emitting display device includes a plurality of pixels each coupled to a corresponding one of previous scan lines, a corresponding one of current scan lines, and a data line; first switching elements coupled between the previous scan lines of the pixels and a first test pad, and configured to turn on during a first period of a test period to provide a first test control signal supplied from the first test pad to the pixels; and second switching elements coupled between the current scan lines of the pixels and a second test pad, and configured to turn on during a second period of the test period to provide a second test control signal supplied from the second test pad to the pixels.

Abstract: A scan driver and a display device including the same are provided. The scan driver according to an exemplary embodiment of the present invention generates and transmits at least two different types of scan signals to a display unit including a plurality of pixels, and includes a plurality of sequence drivers each including a plurality of shift registers for generating the different scan signals. In one of the sequence drivers, the scan signal generated in one of the shift registers is transmitted as the input signal of a next one of the shift registers, and the scan signal is concurrently transmitted as an input signal to another one of the shift registers of another one of the sequence drivers of a previous stage or a next stage adjacent to the one of the sequence drivers including the one of the shift registers according to the driving direction of the scan driver.

Abstract: A pixel of the present invention can display an image having uniform luminance. The pixel includes: an organic light emitting diode; a first transistor for controlling the amount of current flowing from a first power supply connected to a first electrode to the organic light emitting diode; a first capacitor having a first terminal connected to a data line; a third transistor positioned between a second node connected to a second terminal of the first capacitor and a first node connected to a gate electrode of the first transistor, and turned on when a first scan signal is supplied to the first scan line; and a fifth transistor connected between the second node and the data line, and turned off when an emission control signal is supplied to an emission control line.

Abstract: A pixel which allows compensating a threshold voltage of a driving transistor and a mobility deviation is provided. The pixel includes an organic light emitting diode connected between a first power supply and a second power supply, a first transistor connected between the first power supply and the organic light emitting diode, wherein the gate electrode of the first transistor is connected to a first node, a second transistor connected between the first node and the data line, wherein the gate electrode of the second transistor is connected to the scanning line, a third transistor connected between an access node of the first transistor and the organic light emitting diode, and the second power supply, that is turned on during the scanning period which the second transistor is turned on; and, first and second capacitors connected between the first power supply and the first node, wherein an access node of the first and second capacitor is connected to an access node of the first and third transistor.

Abstract: A pixel having an improved response time includes an organic light emitting diode connected between a first power supply and a second power supply; a first transistor connected between the first power supply and the organic light emitting diode, the first transistor including a gate electrode connected to a first node; a second transistor connected between a first electrode of the first transistor connected to the first power supply and a data line, the second transistor including a gate electrode connected to a current scanning line; a third transistor connected between a second electrode of the first transistor connected to the organic light emitting diode and the first node, the third transistor including a gate electrode connected to the current scanning line; a fourth transistor connected between the second electrode of the first transistor and the organic light emitting diode, the fourth transistor including a gate electrode connected to a light emitting control line; a fifth transistor connected betwee

Abstract: A pixel having an improved response time includes an organic light emitting diode connected between a first power supply and a second power supply; a first transistor connected between the first power supply and the organic light emitting diode, in which a gate electrode is connected to a first node; a second transistor connected between a first electrode of the first transistor connected to the first power supply and a data line, in which a gate electrode is connected to a current scanning line; a third transistor connected between a second electrode of the first transistor connected to the organic light emitting diode and the first node, in which a gate electrode is connected to the current scanning line or a control line; a fourth transistor connected between the second electrode of the first transistor and the organic light emitting diode, in which a gate electrode is connected to a light emitting control line, a fifth transistor connected between a connecting node of the fourth transistor and the organic

Abstract: An OLED display and a driving method of an inspection circuit are provided. The OLED display may include a data driver, a scan driver, a driving transistor, a switching transistor, an organic light emitting diode, and an inspection circuit. The data driver and scan driver may apply a data signal and a scan signal. The driving transistor may generate a current corresponding to a voltage supplied to a first electrode and a control electrode. The switching transistor may apply the data signal to the driving transistor. The organic light emitting diode may be electrically connected to the driving transistor. The inspection circuit may include a three-phase inverter circuit having an input and an output terminal. The input terminal may supply a first power voltage to the output terminal when the output terminal decides an output signal regardless of a signal input to the input terminal.

Abstract: A shift register and an organic light emitting display using the same with a simplified design of a shift register having high reliance, and reduced dead space includes a plurality of stages dependently connected to a start pulse input line, each of the stages including: a voltage level controller to control voltage levels of first and second output nodes according to a start pulse or an output signal of a previous stage and a second clock signal; a control capacitor coupled between the first output node and an input line of a first clock signal; a first transistor coupled between a first power supply and a third output node and including a gate electrode coupled to the first output node; and a second transistor coupled between the third output node and an input line of the third clock signal and including a gate electrode coupled to the second output node.

Abstract: An organic light emitting display device and a testing method thereof is provided. The organic light emitting display device may be used to perform a test of a sheet unit for a plurality of organic light emitting display devices formed on a mother substrate. The organic light emitting display device can separately turn off particular organic light emitting display devices. A display region includes a plurality of pixels, which are connected to scan lines and data lines. A scan driver supplies a scan signal to the scan lines. A peripheral region surrounds the display region and includes a first wiring group extending in a first direction and a second wiring group extending in a second direction. A transistor group includes a plurality of transistors, which are coupled with one end of the data lines. An on/off controller is coupled with at least one wiring of the first wiring group and at least one wiring of the second wiring group.

Abstract: An organic light emitting display device may include a pixel portion including a plurality of pixels, which are coupled to scan lines and data lines, a scan driver adapted to provide scan signals to the scan lines, a first transistor group adapted to test the plurality of pixels, the first transistor group being directly connected to first ends of the data lines, a second transistor group adapted to test the plurality of pixels, the second transistor group being connected to second ends of the data lines, a data distributor coupled between the second ends of the data lines and the second transistor group, a first wire group extending in a first direction at an outer area of the light emitting display device, and a second wire group extending in a second direction at the outer area of the light emitting display device.

Abstract: A pixel includes a light emitting diode, and a switching circuit that is coupled to a data line and a compensation power source line, and includes a transistor including a control terminal, a first main terminal coupled to a power source line, and a second main terminal coupled to the light emitting diode. The switching circuit generates a control signal based on at least a voltage of a data signal transmitted through the data.

Abstract: An organic light emitting display device includes: a scan driver for driving one or more scan lines and emission control lines; a data driver for sequentially providing j data signals to each of a plurality of output lines in each horizontal period; a demultiplexer for transmitting the j data signals to j first data lines, the demultiplexer being coupled to the output lines; a plurality of pixels at crossing regions of the scan lines and second data lines extending in a direction crossing the scan lines; and a common circuit unit for controlling voltages of the second data lines coupled to the pixels by using a reference voltage and an initial voltage and the data signals, the common circuit unit being coupled between the first data lines and the second data lines.

Abstract: A pixel circuit and an organic light emitting display using the pixel circuit and a pixel circuit driving method capable of displaying an image of desired brightness are disclosed. The pixel provides a current for an organic light emitting diode which is not affected by a kickback voltage which occurs at the end of an initialization phase. The pixel also provides a current for an organic light emitting diode which is substantially not affected by a voltage drop in the power supply providing the current.

Abstract: A shift register, including first through third output nodes and first through third input lines for first through third clock signals, a fourth input line adapted to supply a start pulse or an output signal, a voltage level controller coupled between the second and fourth input lines, the voltage level controller being adapted to control voltage levels of the first and second output nodes, a first transistor coupled between a first power supply and the third output node, the third output node being an output node of the stage, a second transistor coupled between the third output node and the third input line, and a third transistor coupled between the first output node and a second power supply.

Abstract: An organic light emitting diode display includes a pixel having: a first capacitor connected between a first node and a second node; a second capacitor connected between the first node and a third node; a first switching device connected between a data line and the first node, and for selectively delivering a data signal to the first node; a second switching device connected to the second node, and for selectively delivering a first power to the second node; a third switching device connected to the first node and the third node, and for selectively delivering a voltage at the third node to the first node; a driving device connected to the second node, and for causing a driving current to flow in response to a voltage at the second node; and a light emitting diode connected to the driving device, and for emitting a light in response to the driving current flowing into the light emitting diode.