| Patent application number | Description | Published |
|---|
| 20110273418 | Emission driver, light emitting display device using the same, and driving method of emission control signals - A light emission control driver, including a first circuit unit receiving a clock signal, an input signal, and an input bar signal and generating an output bar signal, the first circuit unit being connected to a first node, a second circuit unit receiving the output bar signal, an input signal, and a clock signal and generating an output signal, the second circuit unit being connected to the first node, and a third circuit unit connected to the first node, the third circuit unit receiving the output signal and maintaining a voltage of the first node by applying a first voltage to the first node during a predetermined period responsive to the output signal. | 11-10-2011 |
| 20110273434 | Scan driving apparatus and driving method for the same - A scan driving apparatus, includes scan driving blocks, each including a first and a second input terminal where a frame start or a scan signal of an adjacent scan driving block is input during forward and backward direction driving, respectively, wherein each of the scan driving blocks transmits a first scan direction signal instructing forward scan driving to a first transistor adjusting a clock signal in accordance with a signal input to the first input terminal, transmits a second scan direction signal instructing backward scan driving to the first transistor in accordance with a signal input to the second input terminal, and outputs the clock signal as a corresponding scan signal, the even numbered ones of the scan driving blocks receive a first clock signal as the clock signal, the odd numbered ones of the scan driving blocks receive a second clock signal as the clock signal. | 11-10-2011 |
| 20110310077 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME - 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. | 12-22-2011 |
| 20120019499 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - 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. | 01-26-2012 |
| 20120062536 | ORGANIC LIGHT EMITTING DISPLAY WITH PIXEL AND METHOD OF DRIVING THE SAME - A pixel capable of displaying an image with uniform brightness. The pixel includes an organic light emitting diode (OLED), a first transistor for controlling an amount of current that flows from a first power source to a second power source via the OLED, and a second transistor coupled between a gate electrode of the first transistor and a bias power source, and configured to be turned on when a reset signal is supplied to a reset line, wherein a turn on time of the second transistor is configured to apply the bias power source to the gate electrode of the first transistor for at least 560 μs. | 03-15-2012 |
| 20120105410 | PIXEL AND ORGANIC LIGHT EMITTING DISPLAY USING THE SAME - A pixel capable of displaying an image with uniform brightness. The pixel includes an organic light emitting diode (OLED), a first transistor for controlling an amount of current supplied from a first power source coupled to a first electrode to the OLED, a second transistor coupled between a gate electrode of the first transistor and an initial power source to be turned on when a second scan signal is supplied to a second scan line, a first capacitor coupled between the gate electrode of the first transistor and the first power source, and a second capacitor whose first terminal is coupled to a first electrode of the first transistor. | 05-03-2012 |
| 20120133626 | Scan driver and method of driving the same - A scan driver of a display device may include a plurality of scan lines. The scan driver may include a plurality of stages configured to transmit scan signals to the scan lines. Each stage may include an input terminal for receiving a scan signal from a previous stage, an output terminal, an output unit, a sequential switching unit, and a simultaneous switching unit. The output unit may be coupled to the output terminal, and outputs a corresponding scan signal to the output terminal. The sequential switching unit may be coupled to the input terminal, and controls the output unit such that the output unit of each stage sequentially outputs the scan signals having a first voltage in a first period. The simultaneous switching unit may control the output unit such that the output unit of each stage simultaneously output the scan signals having a predetermined voltage in a second period. | 05-31-2012 |
| 20120182283 | SCAN DRIVER AND DRIVING METHOD THEREOF - A display device includes a plurality of scan lines and a scan driver. The scan driver includes a plurality of stages for transmitting a scan signal having a first voltage to the plurality of scan lines, and each of the stages includes a sequential switching unit, a sequential output unit, a concurrent switching unit, and a concurrent output unit. The concurrent output unit includes a first transistor for transmitting a second control signal to the output terminal according to a first control signal during a concurrent driving period before the scan signal is converted from a first level to a second level according to the second control signal, and a gate voltage of the first transistor is controlled by a voltage that is different from the first voltage according to the first control signal. | 07-19-2012 |
| 20130002615 | STAGE CIRCUIT AND SCAN DRIVER USING THE SAME - 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). | 01-03-2013 |
| 20130002630 | Scan driver and organic light emitting display using the same - 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. | 01-03-2013 |
| 20130141412 | Pixel Circuit, Organic Light Emitting Display Device, and Method of Driving the Pixel Circuit - 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. | 06-06-2013 |
| 20140253612 | DISPLAY DEVICE AND DRIVING METHOD THEREOF - A display device includes: a plurality of pixels, each of the pixels including: a switching transistor; a relay transistor; a first capacitor; a driving transistor; and an organic light emitting diode (OLED). The OLED emits light according to a driving current from a first power source voltage, and a light emitting period for the OLED is one of a first light emitting period that is not temporally overlapped with a scan period in which data are written to the pixels or a second light emitting period that is temporally overlapped with the scan period. A duty of the light emitting period is controlled by controlling a time when a second power source voltage is applied as a low level voltage within the first light emitting period or controlling a time when the second power source voltage is applied as a low level voltage within the second light emitting period. | 09-11-2014 |
| 20140353671 | DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF - A display device may include a display area for displaying an image. The display device may further include a peripheral area that surrounds the display area. The display device may further include a pixel disposed in the display area. The display device may further include a bus line disposed in the peripheral area and configured to transmit a signal. The display device may further include a connection conductor set electrically connected to the bus line. The display device may further include a branch line electrically connected to the connection conductor set, configured to receive the signal from the bus line, and configured to transmit the signal to the pixel, wherein a portion of the branch line is disposed in the display area. | 12-04-2014 |
