Patents by Inventor Hoi-Sik Moon
Hoi-Sik Moon has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20150009188Abstract: A display device and a driving method thereof are disclosed. In one aspect, the display device includes a display panel including a plurality of pixels, a data driver transferring data voltages to a plurality of data lines, and a gate driver transferring gate signals to a plurality of gate lines. The display device also includes a signal controller controlling the data driver and the gate driver and including a signal processor. The signal processor includes a memory and a coupling index calculator calculating a coupling index which represents a coupling degree between adjacent rows. The signal processor compensates for the input image signal to generate a compensated image signal based at least in part on the coupling index.Type: ApplicationFiled: January 6, 2014Publication date: January 8, 2015Applicant: Samsung Display Co., Ltd.Inventors: Jae-Suk Choi, Hoi Sik Moon, Gwang Ho Nam, Chang-Soo Lee, Min-Yup Chae, Hak-Mo Choi
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Patent number: 8890786Abstract: In a method of driving a display panel, a voltage of a first polarity with respect to a reference voltage is outputted to an n-th data line and an (n+1)-th data line (‘n’ is a natural number), respectively, and a voltage of a second polarity with respect to the reference voltage is outputted to an (n+2)-th data line and an (n+3)-th data line, respectively, during an N-th frame (‘N’ is a natural number). Then, a voltage of the first polarity is outputted to the n-th data line, a voltage of the second polarity is outputted to the (n+1)-th data line and the (n+2)-th data line, respectively, and a voltage of the first polarity is outputted to the (n+3)-th data line, during an (N+1)-th frame.Type: GrantFiled: May 24, 2011Date of Patent: November 18, 2014Assignee: Samsung Display Co., Ltd.Inventors: Hoi-Sik Moon, Yun-Seok Lee, Chang-Soo Lee, Jae-Han Lee
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Publication number: 20140306984Abstract: Disclosed are a display device and a driving method thereof. The display device includes: a first lookup table that stores first color compensation data optimized to display a first color; a second lookup table that stores second color compensation data optimized to display a second color different from the first color; and a color compensating unit that refers to the first lookup table and the second lookup table.Type: ApplicationFiled: August 1, 2013Publication date: October 16, 2014Applicant: Samsung Display Co., Ltd.Inventors: Jae-Suk Choi, Hoi Sik Moon, Woo-Young Lee, Kang-Hyun KIM, Woo-Jin Jung, Jae-Seob Chung
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Patent number: 8847931Abstract: A driving apparatus of a liquid crystal display includes a signal modification unit which modifies a signal based on a data signal input to the liquid crystal display, where the signal modification unit determines whether the data signal corresponds to an image to be displayed with a quality deterioration and outputs at least one of a first signal and a second signal, where the first signal is output when the signal modification unit determines the data signal corresponds to the image to be displayed with the quality deterioration, and where the second signal is output when the signal modification unit determines the data signal does not corresponds to the image to be displayed with the quality deterioration.Type: GrantFiled: September 23, 2011Date of Patent: September 30, 2014Assignee: Samsung Display Co., Ltd.Inventors: Jae-Won Jeong, Hoi Sik Moon, Woo-Jin Jung, Woo-Young Lee, Kang-Hyun Kim, Duc-Han Cho, Su-Bin Park
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Patent number: 8830158Abstract: In a method of local dimming a light source, which includes driving a light source including a plurality of light-emitting blocks by individually driving the light-emitting blocks, the dimming level of each light-emitting block is determined. In the method, the luminance of a first light-emitting area may be adjusted according to a size of the first light-emitting area corresponding to a display area in which an image having a maximum luminance is displayed.Type: GrantFiled: March 20, 2009Date of Patent: September 9, 2014Assignee: Samsung Display Co., Ltd.Inventors: Se-Ki Park, Gi-Cherl Kim, Dong-Min Yeo, Hoi-Sik Moon, Si-Joon Song, Ho-Sik Shin
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Publication number: 20140198134Abstract: A method of displaying an image on a display panel having a plurality of pixels arranged as rows and columns includes calculating a row correction value corresponding to a pixel position of a received data based on an average luminance of pixels in a pixel row of a sample-grayscale image, calculating a column correction value corresponding to the pixel position of the received data based on an average luminance of pixels in a pixel column of the sample-grayscale image, generating correction data for the received data using a row correction value and a column correction value corresponding to a pixel position of the received data, and converting the correction data to a data voltage to provide a data line of the display panel with the data voltage.Type: ApplicationFiled: June 20, 2013Publication date: July 17, 2014Inventors: Hoi-Sik MOON, Min-Kyu PARK, Jee-Hoon JEON, Sung-Goon JUNG, Young-Suk HA
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Patent number: 8698851Abstract: A display apparatus includes a first pixel including a first pixel electrode connected to first data and gate lines, a second pixel including a second pixel electrode connected to a second data and gate lines, a third pixel including a third pixel electrode connected to a third data line and the first gate line, a fourth pixel including a fourth pixel electrode connected to a fourth data line and the second gate line, a fifth pixel including a fifth pixel electrode connected to a fifth data line and the second gate line, a sixth pixel including a sixth pixel electrode connected to a sixth data line and the first gate line, a seventh pixel including a seventh pixel electrode connected to a seventh data line and the second gate line, and an eighth pixel including an eighth pixel electrode connected to an eighth data line and the first gate line.Type: GrantFiled: January 28, 2011Date of Patent: April 15, 2014Assignee: Samsung Display Co., Ltd.Inventors: Hoi-Sik Moon, Duc-Han Cho
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Patent number: 8681183Abstract: A display apparatus includes a display panel, a timing controller and a data driver. The display panel includes a plurality of unit pixels respectively including a first sub-pixel and a second sub-pixel. The timing controller includes a first compensation unit which receives grayscale data corresponding to the unit pixels and generates first compensation data of the grayscale data using offset values of first sample compensation data sampled from a first gamma curve. The data driver includes a second compensation unit which generates second compensation data of the grayscale data using second sample compensation data sampled from a second gamma curve and the first compensation data. Accordingly, the first and second compensation data comprise color compensation data, which improve image quality. A method for driving the display panel of the display apparatus is also provided.Type: GrantFiled: March 6, 2009Date of Patent: March 25, 2014Assignee: Samsung Display Co., Ltd.Inventors: Bong-Im Park, Hoi-Sik Moon, Bong-Ju Jun, Jae-Won Jeong, Yong-Jun Choi
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Patent number: 8451262Abstract: Disclosed is a method of driving a display panel, which includes a plurality of data lines, a plurality of gate lines, a first pixel column electrically connected to an N-th gate line and a second pixel column electrically connected to an (N+1)-th gate line adjacent to the N-th gate line (wherein N is a natural number). In the method, compensation data of the first pixel for compensating for a kickback deviation between the first and second pixel columns is generated using first data and second data corresponding to the first and second pixel columns, respectively. The compensation data of the first pixel column and the second data of the second pixel column are converted to data voltages of an analog type to output the data voltages to the data lines.Type: GrantFiled: November 25, 2009Date of Patent: May 28, 2013Assignee: Samsung Display Co., Ltd.Inventors: Jae-Hoon Lee, Chang-Soo Lee, Hoi-Sik Moon, Young-su Han
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Patent number: 8358293Abstract: A display apparatus includes light source blocks driven as follows in displaying at least one frame (possibly every frame). An image to be displayed includes image pixels. Each light source block corresponds to an image pixels block which is a block of image pixels to be displayed directly opposite to the light source block. For each image pixels block, a block mean value and a block maximum value are determined. A parameter is determined which corresponds to a total luminance of the frame. For each image pixels block, a block representative value is determined which corresponds to the parameter, the block representative value being within a range between the block mean value and the block maximum value inclusive. During the frame, each light source block is driven to provide a luminance which is an increasing function of the corresponding block representative value.Type: GrantFiled: March 20, 2009Date of Patent: January 22, 2013Assignee: Samsung Display Co., Ltd.Inventors: Young-Jun Seo, Dong-Min Yeo, Gi-Cherl Kim, Se-Ki Park, Hoi-Sik Moon
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Publication number: 20120293466Abstract: A driving apparatus of a liquid crystal display includes a signal modification unit which modifies a signal based on a data signal input to the liquid crystal display, where the signal modification unit determines whether the data signal corresponds to an image to be displayed with a quality deterioration and outputs at least one of a first signal and a second signal, where the first signal is output when the signal modification unit determines the data signal corresponds to the image to be displayed with the quality deterioration, and where the second signal is output when the signal modification unit determines the data signal does not corresponds to the image to be displayed with the quality deterioration.Type: ApplicationFiled: September 23, 2011Publication date: November 22, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jae-Won JEONG, Hoi Sik MOON, Woo-Jin JUNG, Woo-Young LEE, Kang-Hyun KIM, Duc-Han CHO, Su-Bin PARK
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Patent number: 8243058Abstract: A gate driving circuit includes a plurality of stages connected to each other. An m-th stage (‘m’ is a natural number) of the stages includes a pull-up part, a pull-down part, a first holding part and a second holding part. The pull-up part outputs a high voltage of a clock signal as a high voltage of an m-th gate signal in response to a high voltage applied to a first output control part. The pull-down part pulls down the high voltage of the m-th gate signal to a first low voltage in response to a high voltage of an (m+1)-th gate signal. The first holding part holds a voltage applied to the first output control part as a second low voltage having a level lower than the first low voltage. The second holding part holds a low voltage of the m-th gate signal to the first low voltage.Type: GrantFiled: November 11, 2009Date of Patent: August 14, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-Hoon Lee, Jun-Yong Song, Hoi-Sik Moon, Yong-Soon Lee
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Publication number: 20120200818Abstract: A liquid crystal display includes a plurality of pixels arranged in a matrix, each pixel having a first sub-pixel electrode and a second sub-pixel electrode. A first thin film transistor is connected to the first sub-pixel electrode. A second thin film transistor is connected to the second sub-pixel electrode. A third thin film transistor is connected to the second sub-pixel electrode. A fourth thin film transistor is connected to a drain electrode of the third thin film transistor. A first gate line is connected to the first thin film transistor and the second thin film transistor. A data line is connected to the first thin film transistor and the second thin film transistor. A second gate line is connected to the third thin film transistor. A third gate line is connected to the fourth thin film transistor.Type: ApplicationFiled: September 23, 2011Publication date: August 9, 2012Inventors: CHANG-SOO LEE, Kee-Bum PARK, Yun Jae PARK, Jong Jae LEE, Hoi Sik MOON
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Publication number: 20120075281Abstract: In a method of driving a display panel, a voltage of a first polarity with respect to a reference voltage is outputted to an n-th data line and an (n+1)-th data line (‘n’ is a natural number), respectively, and a voltage of a second polarity with respect to the reference voltage is outputted to an (n+2)-th data line and an (n+3)-th data line, respectively, during an N-th frame (‘N’ is a natural number). Then, a voltage of the first polarity is outputted to the n-th data line, a voltage of the second polarity is outputted to the (n+1)-th data line and the (n+2)-th data line, respectively, and a voltage of the first polarity is outputted to the (n+3)-th data line, during an (N+1)-th frame.Type: ApplicationFiled: May 24, 2011Publication date: March 29, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hoi-Sik MOON, Yun-Seok LEE, Chang-Soo LEE, Jae-Han LEE
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Patent number: 8144163Abstract: A display device which includes a display panel having a plurality of pixels and displaying images. Each pixel includes a data line, first and second gate lines, a first sub-pixel connected to the first gate line and the data line, and a second sub-pixel connected to the same data line and the second gate line, and a display driving unit receives an image signal, converts the image signal into a first sub image signal and a second sub image signal, supplies the first sub data voltage to the first sub-pixel through the data line and then supplies the second sub data voltage to the second sub-pixel through the same data line. The first sub data voltage corresponding to the first sub image signal, and the second sub data voltage corresponding to the second sub image signal.Type: GrantFiled: October 30, 2008Date of Patent: March 27, 2012Assignee: Samsung Electronics Co., Ltd.Inventor: Hoi-Sik Moon
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Publication number: 20120026206Abstract: A display apparatus includes a first pixel including a first pixel electrode connected to first data and gate lines, a second pixel including a second pixel electrode connected to a second data and gate lines, a third pixel including a third pixel electrode connected to a third data line and the first gate line, a fourth pixel including a fourth pixel electrode connected to a fourth data line and the second gate line, a fifth pixel including a fifth pixel electrode connected to a fifth data line and the second gate line, a sixth pixel including a sixth pixel electrode connected to a sixth data line and the first gate line, a seventh pixel including a seventh pixel electrode connected to a seventh data line and the second gate line, and an eighth pixel including an eighth pixel electrode connected to an eighth data line and the first gate line.Type: ApplicationFiled: January 28, 2011Publication date: February 2, 2012Inventors: HOI-SIK MOON, Duc-Han Cho
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Patent number: 8068086Abstract: A first resistor string provides a plurality of first polarity gamma-reference-voltages. A second resistor string provides a plurality of second polarity gamma-reference-voltages. A first main-thermal compensation section exhibits a resistance value that increases with an increase of temperature. A second main-thermal compensation section has a resistance value that is decreases with an increase of temperature. Thus, gamma-reference-voltages corresponding to white gradation are decreased and gamma-reference-voltages corresponding to black gradation are maintained, so that a deviation of kickback voltage corresponding to the white gradation is decreased.Type: GrantFiled: February 12, 2007Date of Patent: November 29, 2011Assignee: Samsung Electronics Co., Ltd.Inventor: Hoi-Sik Moon
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Patent number: 7961164Abstract: A signal processing device and method of manufacturing the same include a converting unit converting first, second, and third image data into first sub first image data, first sub second image data, and first sub third image data having gray levels higher than the gray levels of first, second, and third image data, respectively, and second sub first image data, second sub second image data, and second sub third image data having gray levels lower than the gray levels of the first, second, and third image data, respectively, a first correcting unit which compares the first sub image data, corrects the first sub second image data according to the comparison result, and outputs corrected first sub second image data, and a second correcting unit which compares the second sub image data, corrects the second sub second image data according to the comparison result, and outputs corrected second sub second image data.Type: GrantFiled: March 20, 2007Date of Patent: June 14, 2011Assignees: Samsung Electronics Co., Ltd., Seoul National University Industry FoundationInventor: Hoi-sik Moon
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Publication number: 20110012887Abstract: A display apparatus includes a display panel and a data driving part. The display panel includes pixels, data lines and gate lines. A transverse side of the pixels is disposed adjacent to the data lines extending along a first direction, and a longitudinal side of the pixels is disposed adjacent to the gate lines extending along a second direction. Two adjacent pixels of the pixels disposed adjacent to each other along the second direction are connected to one gate line of the gate lines. The data driving part transmits two-dot-inversed first direction data voltages to pixels disposed along the second direction and two-dot-inversed second direction data voltages to pixels disposed along the first direction.Type: ApplicationFiled: March 11, 2010Publication date: January 20, 2011Applicant: SAMSUNG ELECTRONICS CO., LTDInventors: Jae-Hoon LEE, Yong-Soon LEE, Hoi-Sik MOON, Chang-Soo LEE
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Publication number: 20100207928Abstract: A gate driving circuit includes a plurality of stages connected to each other. An m-th stage (‘m’ is a natural number) of the stages includes a pull-up part, a pull-down part, a first holding part and a second holding part. The pull-up part outputs a high voltage of a clock signal as a high voltage of an m-th gate signal in response to a high voltage applied to a first output control part. The pull-down part pulls down the high voltage of the m-th gate signal to a first low voltage in response to a high voltage of an (m+1)-th gate signal. The first holding part holds a voltage applied to the first output control part as a second low voltage having a level lower than the first low voltage. The second holding part holds a low voltage of the m-th gate signal to the first low voltage.Type: ApplicationFiled: November 11, 2009Publication date: August 19, 2010Inventors: Jae-Hoon Lee, Jun-Yong Song, Hoi-Sik Moon, Yong-Soon Lee