Patents by Inventor Yun Ki Baek
Yun Ki Baek 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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Patent number: 11699395Abstract: A display device according to some embodiments includes pixels divided into pixel rows arranged in a horizontal direction, and including a light emitting element, and a first transistor for applying a drive current to the light emitting element, and a sensing driver configured to receive a sensing value extracted from one or more of the pixels, wherein at least one pixel row of the pixel rows is configured to be driven in one frame including an emission period in which the light emitting element emits light after a data voltage is applied to the pixels, and an active sensing period for sensing a characteristic of the first transistor.Type: GrantFiled: June 23, 2021Date of Patent: July 11, 2023Assignee: Samsung Display Co., Ltd.Inventors: Yun Ki Baek, Joon Chul Goh, Jung Taek Kim
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Patent number: 11508290Abstract: A pixel according to some embodiments includes a light source unit, a first transistor coupled between a first power source and a first node, and configured to control a driving current applied to the light source unit, a first bias transistor coupled between a first bias power source and a gate electrode of the first transistor, and a second bias transistor coupled between a second bias power source and a second node that is electrically coupled to an anode of the light source unit, wherein the first bias transistor and the second bias transistor are configured to be turned on during a first period before a data voltage is applied among one frame, and wherein the second bias transistor is configured to be turned on at least once during a second period after the data voltage is applied among the one frame.Type: GrantFiled: May 24, 2021Date of Patent: November 22, 2022Assignee: Samsung Display Co., Ltd.Inventors: Yun Ki Baek, Oh Jo Kwon, Bong Hyun You, Seok Ha Hong
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Publication number: 20220157243Abstract: A display device according to some embodiments includes pixels divided into pixel rows arranged in a horizontal direction, and including a light emitting element, and a first transistor for applying a drive current to the light emitting element, and a sensing driver configured to receive a sensing value extracted from one or more of the pixels, wherein at least one pixel row of the pixel rows is configured to be driven in one frame including an emission period in which the light emitting element emits light after a data voltage is applied to the pixels, and an active sensing period for sensing a characteristic of the first transistor.Type: ApplicationFiled: June 23, 2021Publication date: May 19, 2022Inventors: Yun Ki BAEK, Joon Chul GOH, Jung Taek KIM
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Patent number: 11302239Abstract: A display device includes a display panel including a plurality of sub-pixels, a grayscale conversion part configured to generate a data signal displaying different grayscales to the sub-pixels at a predetermined time interval, and a data driver configured to convert the data signal into a data voltage and to output the data voltage to the display panel.Type: GrantFiled: March 30, 2016Date of Patent: April 12, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Yun-Ki Baek, Nam-Gon Choi, Hong-Soo Kim, Yong-Jun Jang
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Publication number: 20220059016Abstract: A pixel according to some embodiments includes a light source unit, a first transistor coupled between a first power source and a first node, and configured to control a driving current applied to the light source unit, a first bias transistor coupled between a first bias power source and a gate electrode of the first transistor, and a second bias transistor coupled between a second bias power source and a second node that is electrically coupled to an anode of the light source unit, wherein the first bias transistor and the second bias transistor are configured to be turned on during a first period before a data voltage is applied among one frame, and wherein the second bias transistor is configured to be turned on at least once during a second period after the data voltage is applied among the one frame.Type: ApplicationFiled: May 24, 2021Publication date: February 24, 2022Inventors: Yun Ki Baek, Oh Jo Kwon, Bong Hyun You, Seok Ha Hong
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Patent number: 11062647Abstract: A display device including a display panel and a data modulator. The display panel includes a main display region, an auxiliary display region adjacent to the main display region in a first direction, and a notch region adjacent to the auxiliary display region in a second direction crossing the first direction, an image not being displayed in the notch region. The data modulator modulates a notch data corresponding to the notch region among an image data.Type: GrantFiled: November 20, 2018Date of Patent: July 13, 2021Assignee: Samsung Display Co., Ltd.Inventors: Jun-Ho Hwang, Yun Ki Baek
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Patent number: 10354165Abstract: An apparatus for detecting an afterimage candidate region includes: a comparison unit which compares gradation data of an n-th frame with integrated gradation data of an (n?1)-th frame and generates integrated gradation data of the n-th frame, where n is a natural number; a memory which provides the integrated gradation data of the (n?1)-th frame to the comparison unit and stores the integrated gradation data of the n-th frame; and an afterimage candidate region detection unit which detects an afterimage candidate region based on the integrated gradation data of the n-th frame, where each of the integrated gradation data of the n-th frame and the integrated gradation data of the (n?1)-th frame comprises a comparison region and a gradation region.Type: GrantFiled: December 13, 2016Date of Patent: July 16, 2019Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Yong Jun Jang, Nam Gon Choi, Joon Chul Goh, Gi Geun Kim, Geun Jeong Park, Cheol Woo Park, Yun Ki Baek, Jeong Hun So, Dong Gyu Lee
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Publication number: 20190156739Abstract: A display device including a display panel and a data modulator. The display panel includes a main display region, an auxiliary display region adjacent to the main display region in a first direction, and a notch region adjacent to the auxiliary display region in a second direction crossing the first direction, an image not being displayed in the notch region. The data modulator modulates a notch data corresponding to the notch region among an image data.Type: ApplicationFiled: November 20, 2018Publication date: May 23, 2019Inventors: Jun-Ho HWANG, Yun Ki BAEK
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Patent number: 10275861Abstract: An image processing part includes an edge enhancing part, an artifact detecting part and a compensating part. The edge enhancing part emphasizes an edge portion of an object in input image data. The artifact detecting part detects a corner outlier artifact at an area adjacent to the edge portion of the object. The compensating part compensates the corner outlier artifact. Accordingly, the edge portion of the object may be enhanced and the corner outlier artifact is decreased so that the display quality may be improved.Type: GrantFiled: August 16, 2017Date of Patent: April 30, 2019Assignee: Samsung Display Co., Ltd.Inventors: Mun-San Park, Cheol-Woo Park, Yun-Ki Baek, Kyoung-Ju Shin, Tadashi Amino
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Patent number: 10242433Abstract: An image processing part includes an edge enhancing part, an artifact detecting part and a compensating part. The edge enhancing part emphasizes an edge portion of an object in input image data. The artifact detecting part detects a corner outlier artifact at an area adjacent to the edge portion of the object. The compensating part compensates the corner outlier artifact. Accordingly, the edge portion of the object may be enhanced and the corner outlier artifact is decreased so that the display quality may be improved.Type: GrantFiled: August 16, 2017Date of Patent: March 26, 2019Assignee: Samsung Display Co., Ltd.Inventors: Mun-San Park, Cheol-Woo Park, Yun-Ki Baek, Kyoung-Ju Shin, Tadashi Amino
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Patent number: 10210829Abstract: A display apparatus includes a display panel including a first pixel, a common voltage generator and a timing controller. The common voltage generator generates a reference common voltage, and provides the reference common voltage to the first pixel. The timing controller determines a dithering scheme for the first pixel based on first common voltage information, and generates first output pixel data by applying a dithering function to first input pixel data based on the dithering scheme for the first pixel. The first common voltage information indicates whether the reference common voltage is substantially equal to an optimal common voltage of the first pixel. A first data voltage provided to the first pixel is generated based on the first output pixel data. A polarity of the first data voltage is reversed with respect to the reference common voltage for each predetermined duration.Type: GrantFiled: June 7, 2016Date of Patent: February 19, 2019Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Yun-Ki Baek, Yong-Jun Jang, Nam-Gon Choi
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Publication number: 20180012340Abstract: An image processing part includes an edge enhancing part, an artifact detecting part and a compensating part. The edge enhancing part emphasizes an edge portion of an object in input image data. The artifact detecting part detects a corner outlier artifact at an area adjacent to the edge portion of the object. The compensating part compensates the corner outlier artifact. Accordingly, the edge portion of the object may be enhanced and the corner outlier artifact is decreased so that the display quality may be improved.Type: ApplicationFiled: August 16, 2017Publication date: January 11, 2018Inventors: Mun-San PARK, Cheol-Woo PARK, Yun-Ki BAEK, Kyoung-Ju SHIN, Tadashi AMINO
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Patent number: 9811301Abstract: An apparatus includes an overlay buffer configured to store overlay data; a touch path logic to: receive first touch events from the first touch sensor panel and generate a first output based on the first touch events, and receive second touch events from the second touch sensor panel and generate a second output based on the second touch events; and a rendering logic to, when the first touch events occur: receive a first video image; receive the first output; and combine the first video image with the overlay data corresponding to the first video image to output at least one combined display image, and, when the second touch events occur: receive a second video image; receive the second output; and combine the second video image with the overlay data corresponding to the second video image to output the at least one combined display image.Type: GrantFiled: February 20, 2015Date of Patent: November 7, 2017Assignee: Samsung Display Co., Ltd.Inventors: Nam-Gon Choi, Gi Geun Kim, Hong Soo Kim, Geun Jeong Park, Ho Seok Son, Dong Gyu Lee, Dong-Won Park, Cheol Woo Park, Yun Ki Baek, Bong Hyun You
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Patent number: 9767769Abstract: According to an embodiment, the display device includes a touch controller, an image processor, and a display driver. The touch controller is configured to output touch event information corresponding to a touch signal received from a touch panel. The image processor is configured to determine whether a host is in a sleep mode or a normal mode, and to output mixed image data obtained by overlapping an image displayed on a display panel and a marker corresponding to the touch event information while a host is in the sleep mode. The display driver is configured to output pixel driving signals corresponding to the mixed image data to the display panel. The touch controller or image processor is further configured to determine whether a touch input of a user to the touch panel meets a predetermined condition, and if the predetermined condition is met, output a wake-up signal to the host.Type: GrantFiled: February 26, 2015Date of Patent: September 19, 2017Assignee: Samsung Display Co., Ltd.Inventors: Weon-Jun Choe, Joon-Chul Goh, Yun-Ki Baek, Hae-Kwan Seo, Myeong-Su Kim, Jae-Wan Park
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Patent number: 9760981Abstract: An image processing part includes an edge enhancing part, an artifact detecting part and a compensating part. The edge enhancing part emphasizes an edge portion of an object in input image data. The artifact detecting part detects a corner outlier artifact at an area adjacent to the edge portion of the object. The compensating part compensates the corner outlier artifact. Accordingly, the edge portion of the object may be enhanced and the corner outlier artifact is decreased so that the display quality may be improved.Type: GrantFiled: August 9, 2013Date of Patent: September 12, 2017Assignee: Samsung Display Co., Ltd.Inventors: Mun-San Park, Cheol-Woo Park, Yun-Ki Baek, Kyoung-Ju Shin, Tadashi Amino
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Patent number: 9665739Abstract: Display device includes timing controller, display panel, data driver, and scan driver. The timing controller includes an authentication processing unit configured to generate an authentication result based on an authentication control signal. The timing controller converts an input image data signal to data driver control signal and scan driver control signal when the authentication result represents success. The timing controller deactivates the data driver control signal and the scan driver control signal when the authentication result represents fail. The display panel includes plurality of pixels. The data driver generates plurality of data signals based on the data driver control signal and provides the data signals to the pixels through plurality of data signal lines. The scan driver generates plurality of scan signals based on the scan driver control signal and provides the scan signals to the pixels through plurality of scan signals lines.Type: GrantFiled: February 19, 2015Date of Patent: May 30, 2017Assignee: Samsung Display Co., Ltd.Inventors: Yun-Ki Baek, Ho-Seok Son, Joon-Chul Goh, Mun-San Park
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Publication number: 20170116941Abstract: A display apparatus includes a display panel including a first pixel, a common voltage generator and a timing controller. The common voltage generator generates a reference common voltage, and provides the reference common voltage to the first pixel. The timing controller determines a dithering scheme for the first pixel based on first common voltage information, and generates first output pixel data by applying a dithering function to first input pixel data based on the dithering scheme for the first pixel. The first common voltage information indicates whether the reference common voltage is substantially equal to an optimal common voltage of the first pixel. A first data voltage provided to the first pixel is generated based on the first output pixel data. A polarity of the first data voltage is reversed with respect to the reference common voltage for each predetermined duration.Type: ApplicationFiled: June 7, 2016Publication date: April 27, 2017Inventors: YUN-KI BAEK, YONG-JUN JANG, NAM-GON CHOI
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Publication number: 20170091583Abstract: An apparatus for detecting an afterimage candidate region includes: a comparison unit which compares gradation data of an n-th frame with integrated gradation data of an (n?1)-th frame and generates integrated gradation data of the n-th frame, where n is a natural number; a memory which provides the integrated gradation data of the (n?1)-th frame to the comparison unit and stores the integrated gradation data of the n-th frame; and an afterimage candidate region detection unit which detects an afterimage candidate region based on the integrated gradation data of the n-th frame, where each of the integrated gradation data of the n-th frame and the integrated gradation data of the (n?1)-th frame comprises a comparison region and a gradation region.Type: ApplicationFiled: December 13, 2016Publication date: March 30, 2017Inventors: Yong Jun JANG, Nam Gon CHOI, Joon Chul GOH, Gi Geun KIM, Geun Jeong PARK, Cheol Woo PARK, Yun Ki BAEK, Jeong Hun SO, Dong Gyu LEE
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Patent number: 9576538Abstract: A display apparatus includes: a panel including a plurality of pixels configured to display an image; an ambient light sensor configured to sense an illumination level of ambient light and to generate ambient light data; a gamma controller configured to control sections of a reference gamma curve based on the ambient light data to generate a controlled gamma curve, the controlled gamma curve defining output data according to input data; a data driver configured to convert an image signal into a data voltage based on the controlled gamma curve and to supply the data voltage to the pixels; and a gate driver configured to supply a gate signal to the pixels.Type: GrantFiled: March 4, 2014Date of Patent: February 21, 2017Assignee: Samsung Display Co., Ltd.Inventors: Yun-Ki Baek, Jung-Taek Kim, Yong-Jun Jang, Nam-Gon Choi, Joon-Chul Goh, Ah-Reum Kim
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Publication number: 20170025056Abstract: A display device includes a display panel including a plurality of sub-pixels, a grayscale conversion part configured to generate a data signal displaying different grayscales to the sub-pixels at a predetermined time interval, and a data driver configured to convert the data signal into a data voltage and to output the data voltage to the display panel.Type: ApplicationFiled: March 30, 2016Publication date: January 26, 2017Inventors: YUN-KI BAEK, NAM-GON CHOI, HONG-SOO KIM, YONG-JUN JANG