Woo-Nyoung
Woo-Nyoung Lee, Hwaseong-Si KR
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20100020114 | DISPLAY DRIVER INTEGRATED CIRCUIT INCLUDING PRE-DECODER AND METHOD OF OPERATING THE SAME - A display driver integrated circuit (IC) includes a grayscale voltage generator, a main decoder unit, a pre-decoder unit, and an output buffer unit. The grayscale voltage generator is configured to receive at least one gamma reference voltage and generate a plurality of grayscale voltages. The main decoder unit is configured to receive the grayscale voltages and data, decode the data, and selectively output a grayscale voltage based on the decoded result. The pre-decoder unit is configured to decode part of the data and output a precharge voltage. The output buffer unit is configured to sequentially receive an output of the pre-decoder unit and an output of the main-decoder unit, and output grayscale data used for driving a display device. | 01-28-2010 |
20110032242 | SEMICONDUCTOR DEVICE INCLUDING LEVEL SHIFTER, DISPLAY DEVICE INCLUDING THE SEMICONDUCTOR DEVICE AND METHOD OF OPERATING THE SEMICONDUCTOR DEVICE - A semiconductor device includes a code generator and a level shifter. The code generator generates a code including one bit that is in a first logic state and at least one bit that is in a second logic state. The level shifter outputs signals that are at a first voltage level or at a second voltage level through a plurality of output terminals in response to the code. The level shifter includes a plurality of voltage controllers and a plurality of voltage converters. All but one of the voltage controllers control first signals output through all but one of the output terminals to be at the first voltage level in response to the at least one bit. One of the voltage converters controls a second signal output through the remaining output terminal to be at the second voltage level in response to the first signals. | 02-10-2011 |
Woo-Nyoung Lee, Seongnam-Si KR
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20100002019 | DIGITAL TO ANALOG CONVERTER, SOURCE DRIVER AND LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE SAME - A digital to analog converter includes a first decoder, a gamma reference voltage decoder unit and an active resistor string unit. The first decoder receives 2 | 01-07-2010 |
Woo-Nyoung Lee, Gyeonggi-Do KR
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20090174645 | SOURCE DRIVER THAT GENERATES FROM IMAGE DATA AN INTERPOLATED OUTPUT SIGNAL FOR USE BY A FLAT PANEL DISPLAY AND METHODS THEREOF - A source driver that responds to image data by generating an output signal which can be used to drive a flat panel display. The source driver includes a gamma decoder and an amplifier. The gamma decoder selects a first voltage among first analog gray voltages based on some upper bits of the image data, selects a second voltage among second analog gray voltages based on other upper bits of the image data, and selectively outputs at least one of the first and second voltages as a plurality of distributed analog signals in response to lower bits of the image data. The amplifier interpolates between the distributed analog signals from the gamma decoder to generate the output signal of the source driver. The amplifier includes bias circuits that are each configured to generate a bias current, and a plurality of MOSFETs. Each of the MOSFETs includes a source, a drain, and a gate terminal. The gate terminal of each of the MOSFETS is separately connected to receive a different one of the distributed analog signals from the gamma decoder. One of the source/drain terminals of each of the MOSFETS is separately connected to a different one of the bias circuits to receive the bias current, and the other one of the source/drain terminals of each of the MOSFETS is connected together at an output node to generate an interpolated signal. The output signal is based on the interpolated signal. | 07-09-2009 |
Woo-Nyoung Lee, Seoul KR
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20130100004 | DRIVING APPARATUS AND DISPLAY DRIVING SYSTEM INCLUDING THE SAME - A driving apparatus and a display driving system. The driving apparatus includes a first amplification unit receiving a first signal and outputting a driving signal of a positive polarity voltage with respect to a reference voltage, a second amplification unit receiving a second signal and outputting a driving signal of a negative polarity voltage with respect to the reference voltage, and a controller for determining a chopping signal applied to a chopping terminal of the second amplification unit such that an offset polarity of an output voltage of the first amplification unit and an offset polarity of an output voltage of the second amplification unit are the same. | 04-25-2013 |
20130257847 | DISPLAY DEVICE AND IMAGE DATA SIGNAGL OUTPUTTING METHOD THEREOF - A display device includes a display panel having pixels arranged at intersections of source lines and gate lines, a plurality of source drivers configured to dispersedly output image data signals to the source lines in response to source control signals and a data packet, a plurality of gate drivers configured to drive gate lines in response to gate control signals so as to be connected with pixels corresponding to the source lines, and a timing controller configured to output the data packet, the source control signals, and the gate control signals. At least one of the plurality of source drivers is configured to output carry information associated with an output of the image data signals, and at least another of the plurality of source drivers is configured to output the image data signals in response to the carry information. | 10-03-2013 |