| Patent application number | Description | Published |
|---|
| 20090267496 | ORGANIC LIGHT EMITTING DISPLAY DEVICE - 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. | 10-29-2009 |
| 20090267933 | BUFFER AND ORGANIC LIGHT EMITTING DISPLAY USING THE SAME - A buffer and an organic light emitting display using the same that reduces (or prevents) a signal of the organic light emitting display from being delayed by improving an output signal of the buffer. The buffer includes an input unit between a first power source and a second power source having a voltage lower than the first power source, and for receiving an input signal to output a first signal; a first inverter between the first and second power sources, and for receiving the first signal and the input signal to output a second signal obtained by inverting the first signal; a second inverter between the first and second power sources, and for receiving the second signal and the first signal to output a third signal obtained by inverting the second signal; and an output unit coupled between the first power source and a third power source having a voltage lower than the second power source, and for receiving the third signal and the second signal to output an output signal obtained by inverting the third signal. | 10-29-2009 |
| 20100013824 | ORGANIC LIGHT EMITTING DISPLAY AND METHOD OF DRIVING THE SAME - 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. | 01-21-2010 |
| 20100039423 | SCAN DRIVER AND ORGANIC LIGHT EMITTING DISPLAY USING THE SAME - An organic light emitting display generates scan signals with a scan driver that includes a plurality of stages. A first stage among the plurality of stages includes a first signal processor receiving a start pulse and a second clock to generate a first output signal, a second signal processor receiving the start pulse and a first clock to generate a second output signal, a third signal processor receiving the first output signal, the second output signal, and a third clock to generate a first scan signal, and a fourth signal processor receiving the first output signal, the second output signal, and a fourth clock to generate a second scan signal. | 02-18-2010 |
| 20110050741 | ORGANIC LIGHT EMITTING DISPLAY DEVICE AND DRIVING METHOD THEREOF - 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. | 03-03-2011 |
