Patent application number | Description | Published |
20110080393 | Driver and organic light emitting diode display using the same - A driver comprises odd-numbered stages configured to be driven by first and second clock signals and even-numbered stages configured to be driven by the second and third clock signals. Each stage is coupled to a corresponding emission control line, and includes a first driver, a second driver, and a third driver. In a first stage, the first and second drivers receive first and second start pulses and output first and second output signals, respectively. In each stage except the first stage, the first and second driver receives first and second output signals of a previous stage and outputs first and second output signals of each stage, respectively. In each stage, a third driver receives the first and second output signals of each stage and outputs an emission control signal to be transmitted to an emission control line coupled to each stage. | 04-07-2011 |
20120026143 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY USING THE SAME - A pixel capable of displaying an image with uniform brightness, the pixel including an organic light emitting diode, a first transistor to control an amount of current supplied from a first power source coupled to a first electrode to the OLED, a second transistor coupled between a data line and a third node to be turned on when a first scan signal is supplied to a first scan line, a first capacitor coupled between the gate electrode of the first transistor and a second node, a sixth transistor coupled between the second node and the third node to be turned off when an emission control signal is supplied to an emission control line, a second capacitor coupled between the third node and the first power source, a fifth transistor coupled between the first power source and the second node to be turned on when the first scan signal is supplied to the first scan line, and a fourth transistor coupled between a second electrode of the first transistor and the data line to be turned on when a second scan signal is supplied to a second scan line. | 02-02-2012 |
20120176417 | EMISSION CONTROL LINE DRIVER AND ORGANIC LIGHT EMITTING DISPLAY USING THE SAME - An emission control line driver is capable of securing the stability of an output and of freely controlling the width of emission control signals. The emission control line driver includes a plurality of stages respectively coupled to emission control lines. Each of the stages includes a plurality of transistors that are configured to output the emission control signal. The width of the emission control signal may be controlled to correspond to the width of a start signal. Furthermore, a circuit structure of the stages is simplified. | 07-12-2012 |
20120327131 | STAGE CIRCUIT AND EMISSION DRIVER USING THE SAME - A stage circuit includes an output unit for outputting the voltage of a first or second power source to a first output terminal, corresponding to a voltage at a first or second node; a bidirectional driver for receiving sampling signals of previous and next stages; a first driver coupled to the bidirectional driver to control the voltages at the first and second nodes, corresponding to first and second clock signals; and a second driver coupled to the bidirectional driver to output a sampling signal corresponding to the first and second clock signals. The first driver includes a first transistor coupled between the first power source and the second node; a second transistor coupled between the second node and the second power source; a third transistor coupled between the bidirectional driver and the first node; and a first capacitor coupled between the second node and a second input terminal. | 12-27-2012 |
20130207956 | SCAN DRIVING DEVICE FOR a DISPLAY DEVICE AND DRIVING METHOD THEREOF - A scan driving device for a display device includes a plurality of scan drive blocks that are sequentially arranged. Each scan drive block includes a first transistor including a gate electrode connected to a first node to which a gate on voltage is transmitted according to a first clock signal, a first electrode connected to a first power source voltage, and a second electrode connected to an output terminal; a second transistor including a gate electrode connected to a second node to which a signal that is input to an input terminal is transmitted according to the first clock signal, a first electrode connected to a second clock signal input terminal, and a second electrode connected to the output terminal; and a third transistor including a gate electrode connected to the first node, a first electrode connected to the input terminal, and a second electrode connected to the second node. | 08-15-2013 |
20130208032 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD OF DRIVING THE SAME - An organic light emitting display includes pixel circuits at crossing regions of scan lines, data lines, first emission control lines, and second emission control lines, a pattern detecting unit for detecting a specific pattern of an image to be displayed, an emission control line driver for supplying a first emission control signal to the first emission control lines, and for supplying a second emission control signal to the second emission control lines, and a timing controller for controlling the emission control line driver so that a supply order of the first and second emission control signals corresponds to whether the specific pattern is detected. | 08-15-2013 |
20140055444 | EMISSION CONTROL DRIVER AND ORGANIC LIGHT EMITTING DISPLAY DEVICE HAVING THE SAME - An emission control driver includes stages sequentially outputting emission control signals through emission control lines. Each stage includes a first signal processor receiving a first voltage and generating first and second signals in response to first and second sub-control signals, a second signal processor receiving a second voltage having a level higher than a level of the first voltage and generating third and fourth signals in response to the third sub-control signal, the first signal, and the second signal, and a third signal processor receiving the first and second voltages and generating the emission control signal in response to the third and fourth signals. The first signal processor of each stage receives the emission control signal output from a previous stage as the first sub-control signal, and the first signal processor of a first stage among the stages receives a start signal as the first sub-control signal. | 02-27-2014 |
20140078029 | STAGE CIRCUIT AND ORGANIC LIGHT EMITTING DISPLAY USING THE SAME - A stage circuit includes an outputting unit having a first node and a second node, the output unit configured to supply a voltage of a first power supply or a voltage of a third input terminal to an output terminal in accordance with voltages applied to the first node and the second node, a first driver configured to control the voltage of the second node in accordance with signals of a first input terminal, a second input terminal, and the third input terminal, and a second driver configured to control the voltage of the first node in accordance with the signal of the second input terminal and the voltage of the second node. | 03-20-2014 |
20140078031 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD OF DRIVING THE SAME - A method of driving an organic light emitting display includes dividing one frame into a plurality of subfields, setting a plurality of pixels to include first pixels positioned in odd horizontal lines and second pixels positioned in even horizontal lines, and setting pixels that realize low grayscales in an emission state in one of the plurality of subfields, such that the first pixels have emission states in different subfields than emission states of the second pixels, when the low grayscales are realized. | 03-20-2014 |
20140313138 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - A display device including: a plurality of first electrodes each corresponding to a plurality of light emitting groups on a plurality of pixels including organic light emitting diodes (OLEDs) and a plurality of second electrodes formed on the plurality of first electrodes, having an insulating layer therebetween, wherein a plurality of touch sensing signals are applied to each of the plurality of first electrodes during a non-light emitting period of each of the plurality of light emitting groups and a touched position is determined in response to a magnitude in voltage between the first and second electrodes by a touch from the outside. | 10-23-2014 |