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Inventor: Oh-Kyong Kwon


Address: Seoul, KR
No. of applications: 25
Last application issue date: 08/19/2010

Application No.Application TitleIssue Date
20100207967HYBRID DIGITAL TO ANALOG CONVERTER, SOURCE DRIVER, AND LIQUID CRYSTAL DISPLAY DEVICE
A hybrid digital to analog converter (DAC) includes a first digital to analog converting unit (DACU) and a second DAC unit. The first DAC unit provides an analog voltage corresponding to Q-bit upper data of P-bit gray data, in response to a plurality of gamma voltages, ...
08/19/2010
20100188320DISPLAY DEVICE AND DRIVING METHOD THEREOF
The present invention relates to a structure and a method of a pixel and a data driver to measure degradation of an organic light emitting element, and a threshold voltage and mobility of a driving transistor in an organic light emitting device such that degradation of ...
07/29/2010
20100141639Source Driver and Display Device Having the Same
A source driver and a display device having the same are provided. The source driver shares several outputs by using a time division method and has an analog voltage stored in a buffer supplied to each data line multiple times during a horizontal scanning interval. Acco...
06/10/2010
20100073357DISPLAY DEVICE AND METHOD OF DRIVING THE SAME
A display device and a method of driving the same are provided. The display device includes a plurality of display pixels, a plurality of data lines that are connected to the display pixels, and a plurality of sensing lines that are connected to the display pixels. Each...
03/25/2010
20100073335DISPLAY DEVICE AND METHOD OF DRIVING THE SAME
The present invention provides a display device and a method of driving the same. The display device includes a plurality of display pixels to display an image, a plurality of data lines connected to the display pixel, and a plurality of sensing lines connected to the d...
03/25/2010
20090184901ORGANIC LIGHT EMITTING DISPLAY AND DRIVING METHOD THEREOF
An organic light emitting display includes a pixel unit including a plurality of pixels arranged at intersecting points of data lines, scan lines and light emitting control lines; a temperature sensor provided to measure a temperature of the pixel unit; a first analog/d...
07/23/2009
20090051628ORGANIC LIGHT EMITTING DISPLAY AND DRIVING METHOD THEREOF
An organic light emitting display device includes: a plurality of pixels at crossing portions of data lines, scan lines, and emission control lines; a sensor for sensing degradation information of organic light emitting diodes and mobility information of driving transis...
02/26/2009
20080252569Organic light emitting display and driving method thereof
An organic light emitting display capable of displaying an image with uniform luminance regardless of deterioration of an organic light emitting diode and threshold voltage and/or mobility of a drive transistor is disclosed. The organic light emitting display senses det...
10/16/2008
20080252570Organic light emitting display and driving method thereof
An organic light emitting display capable of displaying an image with uniform luminance regardless of deterioration of an organic light emitting diode and threshold voltage/mobility of a drive transistor is disclosed. The organic light emitting display senses deteriorat...
10/16/2008
20080252568Organic light emitting display and driving method thereof
An organic light emitting display capable of displaying an image with uniform luminance regardless of deterioration of an organic light emitting diode and threshold voltage and/or mobility of a drive transistor is disclosed. The organic light emitting display senses det...
10/16/2008
20080157682Ambient light sensor circuit and flat panel display device having the same
An ambient light sensor circuit and a flat panel display device having same that can automatically control screen brightness by sensing ambient brightness and controlling an output current. The ambient light sensor circuit includes a transistor electrically coupled to a...
07/03/2008
20070241952Digital to analog converter having integrated level shifter and method for using same to drive display device
A digital-to-analog converter (DAC) includes a decoder unit for receiving an external digital data signal operating over a first predefined voltage range (i.e., 0-5V); a resistor array for generating a plurality of gray voltages defined across a second voltage range tha...
10/18/2007
20070171177DRIVING DEVICE, DISPLAY DEVICE, AND METHOD OF DRIVING THE SAME
A driving device for a display device includes a gray voltage generator generating a plurality of gray voltages, a voltage selector selecting an output voltage from the plurality of gray voltages, a voltage level converter converting a level of the output voltage select...
07/26/2007
20060139261Data driving circuit, organic light emitting diode (OLED) display using the data driving circuit, and method of driving the OLED display
A data driving circuit including: a voltage digital-analog converter adapted to generate a first gradation voltage corresponding to external data; a current digital-analog converter adapted to generate a gradation current corresponding to the external data; a voltage co...
06/29/2006
20060139343Data driving circuit, organic light emitting diode display using the same, and method of driving the organic emitting diode display
A data driving circuit for displaying an image with a desired brightness comprises: a current digital-analog converter for generating a gradation current corresponding to external data, and for receiving a first current corresponding to the gradation current from a pixe...
06/29/2006
20060139276Data driving integrated circuit (IC), light emitting display using the IC, and method of driving the light emitting display
A data driving integrated circuit to display an image with a desired brightness includes: a shift register adapted to generate sampling signals in sequence; a latch adapted to store external data in response to the sampling signal; a register adapted to temporarily stor...
06/29/2006
20060139259Light emitting display
A light emitting display that includes a pixel portion having a plurality of pixels to display an image, a scan driver to supply a scan signal and an emission control signal to the pixel portion, and a data driver connected to a plurality of data lines each divided into...
06/29/2006
20060139258Buffer circuit and organic light emitting display with data integrated circuit using the same
In an organic light emitting display with a data integrated circuit using the same, a buffer circuit comprises: a first capacitor receiving gradation voltage through a first terminal; a first inverter having an input terminal connected to a second terminal of the first ...
06/29/2006
20060082524Organic electroluminescent display, driving method and pixel circuit thereof
Disclosed is an OELD and a pixel circuit which comprise: an organic EL element for emitting light corresponding to a supplied current; a first switch for switching data voltage supplied to a data line in response to a select signal supplied to a scan line; a first TFT f...
04/20/2006
20050265071Light emitting display, display panel, and driving method thereof
A light emitting display for compensating for the threshold voltage of transistor or mobility and fully charging a data line. A transistor and first through third switches are formed on a pixel circuit of an organic EL display. The transistor supplies a driving current ...
12/01/2005
20050258997Analog buffer, display device having the same, and method of driving the same
An analog buffer, display device having the same and a method of drving the same are provided. The analog buffer applies an analog voltage to a load. The analog buffer includes a comparator and a transistor. The comparator is configured to compare an input voltage provi...
11/24/2005
20050206593Light emitting display, display panel, and driving method thereof
A light emitting display for compensating for the threshold voltage of transistor or mobility and fully charging a data line. A transistor and first through third switches are formed on a pixel circuit of an organic EL display. The transistor supplies a driving current ...
09/22/2005
20050110730Light emitting display and driving method thereof
A light emitting display including data lines for applying data voltages corresponding to video signals, scan lines for transmitting select signals, and pixel circuits. Each pixel circuit includes a light emitting element for emitting light, and a transistor including f...
05/26/2005
20050110739Method of driving gates of liquid crystal display
Disclosed is a method of driving a gate line in an LCD which enables to extend a line time by making different a falling time of scan signals while concurrently driving plural gate lines. In the method, scan signals which rise concurrently are applied to at least two ga...
05/26/2005
20050017934Organic light emitting device pixel circuit and driving method therefor
A pixel circuit in an organic light emitting device capable of realizing high gradation representation by self-compensating a threshold voltage, and a method for driving the same. The pixel circuit includes an electroluminescent element for emitting light in response to...
01/27/2005
 
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