Abstract: A static electricity prevention circuit of a display device including: a driving circuit configured to drive a display unit that displays an image, at least one clock signal wire configured to transmit a clock signal to the driving circuit, at least one transistor electrically coupled to the dock signal wire, and at least one capacitor including a first electrode coupled to a source electrode and to a drain electrode of the transistor, and a second electrode configured to be maintained at a voltage,

Abstract: A pixel circuit for an organic light emitting diode (OLED) display is disclosed. One inventive aspect includes an organic light emitting diode, a first transistor, a second transistor, a first capacitor connected to a second node and a fixed voltage source, a third transistor, a fourth transistor, a second capacitor connected to the fourth transistor and a third node, a first control transistor and a second control transistor. The fourth transistor is connected to the first and third nodes and is turned off when an emission control signal is supplied to an emission control line and turned on otherwise. The first control transistor is connected to the third node and the first power source and is turned on when a first control signal is supplied.

Abstract: A thin film transistor array substrate includes: a substrate; a bottom gate electrode including a gate area doped with ion impurities and undoped areas on left and right sides of the gate area; an active layer on the bottom gate electrode with a first insulating layer therebetween and including a source contact region, a drain contact region, and an oxide semiconductor region; a top gate electrode on the active layer with a second insulating layer therebetween; and a source electrode in contact with the source contact region and a drain electrode in contact with the drain contact region, the source electrode and the drain electrode being on the top gate electrode with a third insulating layer therebetween. The oxide semiconductor region is between the source contact region and the drain contact region.

Abstract: A scan driver includes a plurality of scan driving blocks including a sequential input terminal, a first clock signal input terminal, a second clock signal input terminal, and a signal output terminal. The scan driving blocks include: a first block receiving a frame start signal or an output signal of an adjacent scan driving block through the sequential input terminal, receiving a first clock signal through the first clock signal input terminal, receiving a second clock signal through the second clock signal input terminal so as to output a first output signal to the signal output terminal; and a second block receiving the first output signal through the sequential input terminal, receiving the second clock signal through the first clock signal input terminal, and receiving the first clock signal through the second clock signal input terminal so as to output a second output signal to the signal output terminal.

Abstract: A scan driver includes a plurality of stages arranged sequentially and configured to respectively output a scan signal; and a switching unit configured to receive a plurality of clock signals, to select clock signals of the plurality of clock signals according to a selection control signal, and to input the selected clock signals to the plurality of stages.

Abstract: A method of controlling an operation of a display device using eye movements and a device for performing the method are provided. The method includes receiving eye movement information of a user; receiving blinking information of the user; generating a control command corresponding to the eye movement information and the blinking information; and controlling an operation of the display device based on the generated control command.

Abstract: A scan driving apparatus includes a plurality of sequentially arranged scan driving blocks, each including: a first node configured to receive a first clock signal; a second node configured to receive an input signal according to a second clock signal input; a first transistor having a gate electrode coupled to the first node, a first electrode configured to receive a power source voltage, and a second electrode coupled to an output terminal; and a second transistor having a gate electrode coupled to the second node, a first electrode for receiving a third clock signal, and a second electrode coupled to the output terminal. Each scan driving block is configured to receive the first, second, and third clock signals as a corresponding three clock signals among four clock signals sequentially shifted by a first period, and to output the third clock signal by being synchronized with the input signal.

Abstract: A stage circuit and a scan driver using the same that is capable of concurrently (e.g., simultaneously) or progressively supplying a scan signal to a plurality of scan lines. The stage circuit includes a progressive driver and a concurrent driver.

Abstract: A stage includes an output unit configured to supply a scan signal to an output terminal according to voltages of first and second nodes; a first driver configured to control the voltages of the first and second nodes so that when a start signal or an output signal of a previous stage is supplied to a first input terminal, the scan signal is supplied from the output unit; and a second driver configured to control the voltages of the first and second nodes, corresponding to signals supplied to a second input terminal, a fourth input terminal and a fifth input terminal, wherein the second driver comprises eighth and ninth transistors coupled in series between the output terminal and the second node, and wherein a gate electrode of the eighth transistor is coupled to the first node, and a gate electrode of the ninth transistor is coupled to the fourth input terminal.

Abstract: A thin film transistor includes a substrate, a gate electrode, a buffer layer, a gate insulating layer, an active layer, an etching stop layer, a source electrode and a drain electrode. The gate electrode is formed on the substrate. The buffer layer partially covers both side portions of the gate electrode. The gate insulating layer covers the gate electrode and the buffer layer. The active layer is formed on the gate insulating layer. The etching stop layer is formed on the active layer, and has a first opening and a second opening on the active layer. The source electrode is formed on the etching stop layer, and contacts with the active layer through the first opening. The drain electrode is formed on the etching stop layer, and is contacted with the active layer through the second opening.

Abstract: An electro static discharge (ESD) protection circuit including a signal transmission line coupled to an external input terminal, the ESD protection circuit including: a first power line coupled to a high voltage power supply; a second power line coupled to a low voltage power supply; a plurality of first oxide thin film transistors coupled in parallel between the first power line and the signal transmission line, the first oxide thin film transistors being diode-connected; and a plurality of second oxide thin film transistors coupled in parallel between the signal transmission line and the second power line, the second oxide thin film transistors being diode-connected.

Abstract: A thin film transistor is disclosed. In one aspect, the thin film transistor includes a substrate, a semiconductor layer formed on the substrate, and a first gate electrode substantially overlapping the semiconductor layer with a gate insulating layer interposed therebetween. The thin film transistor also includes a second gate electrode substantially overlapping the first gate electrode with an interlayer insulating layer interposed therebetween, and a source electrode and a drain electrode electrically connected to the semiconductor layer, wherein the first gate electrode is electrically connected to the second gate electrode.

Abstract: A method of controlling a device by an eye action is provided. The method includes selecting a controller to execute a control command generated by the eye action of a user, obtaining data about the eye action of the user, detecting the control command corresponding to the eye action of the user based on the obtained data, and executing the detected control command by using the selected controller.

Abstract: A pixel and an organic light emitting display device using the same are provided. The pixel includes an organic light emitting diode. A first transistor has a second electrode coupled to the organic light emitting diode, and controls the amount of current supplied to the organic light emitting diode. A third transistor is coupled between a reference power source and a first node, and is turned on when a scan signal is supplied to a scan line. A second transistor is turned on when the scan signal is supplied to the scan line, and electrically couples a data line to a second node. A fourth transistor is coupled between the first and second nodes, and is turned off when an emission control signal is supplied to an emission control line. A storage capacitor is coupled between the second node and a first electrode of the first transistor.

Abstract: A driving device comprises: a first driver driven by a first input signal and generating a first interim output signal controlled by a first clock signal; a second driver driven by a second input signal and generating a second interim output signal controlled by a second clock signal; and a plurality of shift registers including a buffer driven by the first interim output signal and the second interim output signal and generating an output signal controllable by the first clock signal and the second clock signal. The buffer includes a second transistor connected to a gate electrode of a first transistor for transmitting a voltage with a first level with the output signal and transmitting a voltage with a second level for turning off the first transistor.

Abstract: A scan driver including sequentially arranged scan driving blocks, each of the blocks including a first node receiving a signal input into a driving signal input terminal based on a clock signal input into a second-clock-signal input terminal, a second node receiving a clock signal input into a first-clock-signal input terminal, a first transistor including a gate electrode connected to the second node, one electrode receiving an output control signal, and another electrode connected to an output terminal, a second transistor including a gate electrode connected to the first node, one electrode connected to a third-clock-signal input terminal, and another electrode connected to the output terminal, and a third transistor including a gate electrode connected to the third-clock-signal input terminal and one electrode connected to the first node and configured to transfer a voltage of the output terminal to the first node.

Abstract: A pixel circuit includes a light emitting device, an N-type driving transistor for outputting a driving current according to a voltage applied to the gate electrode, a first capacitor coupled to a gate electrode of the driving transistor, a second capacitor including a first terminal coupled to the gate electrode of the driving transistor and a second terminal coupled to the first electrode of the light emitting device, and second through sixth N-type transistors. An initialization period is reduced for a driving operation and the threshold voltage compensation time of a driving transistor is controlled.

Abstract: An organic light emitting display device includes: a scan driver for supplying partially overlapping scan signals having at least 2H width and for supplying emission control signals; a data driver; and pixels, each including: an OLED having a cathode coupled to second power; a first transistor having a first electrode coupled to first power; a second transistor between a gate electrode and a second electrode of the first transistor and turned on when the scan signal is supplied to a current scan line; a third transistor between the data line and a second node and turned on when the scan signal is supplied to a subsequent scan line; a first capacitor coupled between the first transistor gate electrode and the second node; and a fourth transistor turned on when the scan signal is supplied to a previous scan line to supply a first voltage to the first transistor gate electrode.

Abstract: A pixel includes an organic light emitting diode (OLED) having a cathode electrode coupled to a second power supply, a pixel circuit configured to control an amount of current supplied to the OLED to correspond to a previous data signal, and a driver configured to store a present data signal supplied from a data line and to supply the previous data signal to the pixel circuit. The OLED, pixel circuit, and driver may be controlled by signals in a frame that includes first through fourth periods, the second power supply may be set to a first voltage in the first and second periods and to a second voltage in the third and fourth periods, and the first voltage may be a voltage at which the OLED does not emit light and the second voltage may be a voltage at which the OLED emits light.

Abstract: A method of driving an OLED display includes: during a scanning period of a first frame, turning off a relay transistor and turning on a switching transistor to enable a second data voltage applied to a data line to be stored in a first capacitor; and during a light emitting period of the first frame, performing an operation to turn on a light emitting transistor and a compensation transistor to enable a voltage into which a first data voltage and a threshold voltage of a driving transistor are reflected to be applied to a second node for enabling the OLED to emit light by a driving current which flows into a driving transistor. The scanning period and the light emitting period temporally overlap each other.