Patents by Inventor Sung-Chan Hwang
Sung-Chan Hwang 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: 12361892Abstract: A display device may include a pixel that includes a first transistor, a second transistor including a gate electrode coupled to a first scan line, and first and second electrodes, a third transistor including a gate electrode coupled to a second scan line, and first and second electrodes, a fourth transistor including a gate electrode coupled to a third scan line, and first and second electrodes, a fifth transistor including a gate electrode coupled to a fourth scan line, and first and second electrodes, a sixth transistor including a gate electrode coupled to a fifth scan line, and first and second electrodes, and a first capacitor. The display device may be, during a first period of a frame period, to concurrently apply a turn-on level scan signal to the third scan line, and apply turn-off level scan signals to the first, second, fourth and fifth scan lines.Type: GrantFiled: January 26, 2024Date of Patent: July 15, 2025Assignee: Samsung Display Co., Ltd.Inventors: Min Woo Byun, Won Kyu Kwak, Seon I Jeong, Min Joo Kim, Dong Hwan Jeon, Sung Chan Hwang
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Patent number: 12354536Abstract: A pixel may include first to third sub-pixels including a first transistor connected to a first power node, a second node, and a first node, a second transistor connected to a data line, the first node, and a first scan line, a third transistor connected to a reference voltage node, the first node, and a second scan line, a fourth transistor connected to a third node, a first initialization voltage node, and a third scan line, a fifth transistor connected to the first power node, the first transistor, and a first emission control line, a sixth transistor connected to the second node, the third node, and a second emission control line, and a first capacitor between the first node and the second node. Any one among reference voltage nodes connected to the first to third sub-pixels may be electrically separated from the other reference voltage nodes.Type: GrantFiled: June 14, 2024Date of Patent: July 8, 2025Assignee: Samsung Display Co., Ltd.Inventors: Dong Hwan Jeon, Min Woo Byun, Min Joo Kim, Jong Sik Shim, Seon I Jeong, Sung Chan Hwang
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Publication number: 20250148961Abstract: A pixel may include first to third sub-pixels including a first transistor connected to a first power node, a second node, and a first node, a second transistor connected to a data line, the first node, and a first scan line, a third transistor connected to a reference voltage node, the first node, and a second scan line, a fourth transistor connected to a third node, a first initialization voltage node, and a third scan line, a fifth transistor connected to the first power node, the first transistor, and a first emission control line, a sixth transistor connected to the second node, the third node, and a second emission control line, and a first capacitor between the first node and the second node. Any one among reference voltage nodes connected to the first to third sub-pixels may be electrically separated from the other reference voltage nodes.Type: ApplicationFiled: June 14, 2024Publication date: May 8, 2025Inventors: Dong Hwan JEON, Min Woo BYUN, Min Joo KIM, Jong Sik SHIM, Seon I JEONG, Sung Chan HWANG
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Publication number: 20250148979Abstract: A display device includes: a light emitting element on a substrate; a first transistor configured to control a driving current flowing in the light emitting element; a second transistor configured to supply a data voltage to the gate electrode of the first transistor based on a first gate signal; a third transistor configured to supply a first reference voltage to the gate electrode of the first transistor based on a second gate signal; a fourth transistor configured to supply a second reference voltage different from the first reference voltage to the drain electrode of the first transistor based on a third gate signal; a fifth transistor configured to supply a driving voltage to the drain electrode of the first transistor based on a first emission signal; and a hold capacitor connected between a second reference line supplying the second reference voltage and the source electrode of the first transistor.Type: ApplicationFiled: August 7, 2024Publication date: May 8, 2025Inventors: Min Joo KIM, Min Woo BYUN, Jong Sik SHIM, Dong Hwan JEON, Seon I JEONG, Sung Chan HWANG
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Publication number: 20250104653Abstract: A display device includes a plurality of pixels arranged in a display area of a display panel, and a display driving circuit supplying data voltages and pixel driving control signals to the plurality of pixels to control an image display operation for each of the plurality of pixels. The display driving circuit further supplies an active control voltage that varies proportional to or inversely proportional to a change in temperature of the display panel to at least one thin film transistor included in the plurality of pixels.Type: ApplicationFiled: May 9, 2024Publication date: March 27, 2025Applicant: Samsung Display Co., LTD.Inventors: Dong Hwan JEON, Won Kyu KWAK, Min Joo KIM, Min Woo BYUN, Jong Sik SHIM, Seon I JEONG, Sung Chan HWANG
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Publication number: 20240347007Abstract: A display device may include a pixel that includes a first transistor, a second transistor including a gate electrode coupled to a first scan line, and first and second electrodes, a third transistor including a gate electrode coupled to a second scan line, and first and second electrodes, a fourth transistor including a gate electrode coupled to a third scan line, and first and second electrodes, a fifth transistor including a gate electrode coupled to a fourth scan line, and first and second electrodes, a sixth transistor including a gate electrode coupled to a fifth scan line, and first and second electrodes, and a first capacitor. The display device may be, during a first period of a frame period, to concurrently apply a turn-on level scan signal to the third scan line, and apply turn-off level scan signals to the first, second, fourth and fifth scan lines.Type: ApplicationFiled: January 26, 2024Publication date: October 17, 2024Inventors: Min Woo BYUN, Won Kyu KWAK, Seon I JEONG, Min Joo KIM, Dong Hwan JEON, Sung Chan HWANG
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Publication number: 20240233639Abstract: A display device includes a display panel including pixels in one pixel column and a gate driver for sequentially providing scan signals to the pixels. Each of the pixels includes a light emitting element, a first transistor for controlling a current amount of driving current flowing through the light emitting element and a second transistor for transferring a data signal to a gate electrode of the first transistor in response to a corresponding scan signal among the scan signals. A first pixel among the pixels is electrically connected to a first data line, and a second pixel adjacent to the first pixel among the pixels is electrically connected to a second data line different from the first data line. A second scan signal provided to the second pixel partially overlaps with a first scan signal provided to the first pixel.Type: ApplicationFiled: October 7, 2023Publication date: July 11, 2024Inventors: Min Woo BYUN, Min Joo KIM, Seon I JEONG, Chae Han HYUN, Sung Chan HWANG
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Publication number: 20240224771Abstract: A display device includes a pixel electrode; a pixel circuit connected to the pixel electrode; a repair line overlapping at least a part of the pixel circuit; and a shielding line overlapping at least a part of the repair line and connected to a constant power source.Type: ApplicationFiled: August 23, 2023Publication date: July 4, 2024Inventors: Su Jin KIM, Ji Hyun KA, Sung Chan HWANG, Chul Kyu KANG, Dong Hyun KIM, Min Joo KIM, Seon Kyoon MOK
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Publication number: 20240224642Abstract: The present disclosure relates to a display device. According to an embodiment of the disclosure, a display device including a first pixel which includes a first gate node including a first vertical portion and a first horizontal portion, and a first pixel electrode, and a second pixel which includes a second gate node including a second vertical portion and a second horizontal portion, and a second pixel electrode, wherein at least a part of each of the first horizontal portion and the second horizontal portion is disposed between facing surfaces of the first pixel electrode and the second pixel electrode so as not to overlap the first and second pixel electrodes.Type: ApplicationFiled: August 28, 2023Publication date: July 4, 2024Inventors: Seon Kyoon MOK, Sung Chan HWANG, Chul Kyu KANG, Dong Hyun KIM, Su Jin KIM, Seon I JEONG, Chae Han HYUN
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Publication number: 20240135876Abstract: A display device includes a display panel including pixels in one pixel column and a gate driver for sequentially providing scan signals to the pixels. Each of the pixels includes a light emitting element, a first transistor for controlling a current amount of driving current flowing through the light emitting element and a second transistor for transferring a data signal to a gate electrode of the first transistor in response to a corresponding scan signal among the scan signals. A first pixel among the pixels is electrically connected to a first data line, and a second pixel adjacent to the first pixel among the pixels is electrically connected to a second data line different from the first data line. A second scan signal provided to the second pixel partially overlaps with a first scan signal provided to the first pixel.Type: ApplicationFiled: October 6, 2023Publication date: April 25, 2024Inventors: Min Woo BYUN, Min Joo KIM, Seon I JEONG, Chae Han HYUN, Sung Chan HWANG
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Publication number: 20240099085Abstract: A display device includes a pixel. The pixel is electrically connected to a first power line, a second power line, and a data line. The pixel includes a first transistor, and a capacitor electrically connected between a gate electrode of the first transistor and an electrode of the first transistor. In a plan view, the data line extends in a second direction. The first power line extends in a first direction intersecting the second direction and overlaps the data line and the gate electrode of the first transistor. The second power line extends in the second direction, overlaps the data line, and overlaps the gate electrode of the first transistor.Type: ApplicationFiled: August 8, 2023Publication date: March 21, 2024Applicant: Samsung Display Co., LTD.Inventors: Sung Chan HWANG, Dong Hyun KIM, Chul Kyu KANG, Hey Jin SHIN, Seo Won CHOE, Chae Han HYUN
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Patent number: 11639898Abstract: An apparatus for testing an edge portion of a substrate, includes a first illumination source configured to irradiate light to an end portion of the edge portion of the substrate; a second illumination source configured to irradiate light to a lower portion of the edge portion; a third illumination source configured to irradiate light to an upper portion of the edge portion; and first to third photographing portions, respectively corresponding to the first to third illumination sources, wherein the first illumination source comprises a C-shaped cross-section and comprises a first curved surface facing the end portion of the edge portion, the second illumination source comprises a half C-shaped cross-section and comprises a second curved surface facing the lower portion of the edge portion, and the third illumination source comprises a half C-shaped cross-section and comprises a third curved surface facing the upper portion of the edge portion.Type: GrantFiled: April 18, 2018Date of Patent: May 2, 2023Assignee: Corning IncorporatedInventors: Sung-chan Hwang, Ji Hwa Jung, Tae-ho Keem, SoYoung Song
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Publication number: 20230003661Abstract: An apparatus for testing an edge portion of a substrate, includes a first illumination source configured to irradiate light to an end portion of the edge portion of the substrate; a second illumination source configured to irradiate light to a lower portion of the edge portion; a third illumination source configured to irradiate light to an upper portion of the edge portion; and first to third photographing portions, respectively corresponding to the first to third illumination sources, wherein the first illumination source comprises a C-shaped cross-section and comprises a first curved surface facing the end portion of the edge portion, the second illumination source comprises a half C-shaped cross-section and comprises a second curved surface facing the lower portion of the edge portion, and the third illumination source comprises a half C-shaped cross-section and comprises a third curved surface facing the upper portion of the edge portion.Type: ApplicationFiled: April 18, 2018Publication date: January 5, 2023Inventors: Sung-chan Hwang, Ji Hwa Jung, Tae-ho Keem, SoYoung Song
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Patent number: 10732126Abstract: A method of inspecting defects on a transparent substrate may include: selecting a gradient of an illumination optical system so that light incident on the transparent substrate has a first angle; selecting a gradient of a detection optical system so that an optical axis of the detection optical system located over the transparent substrate has a second angle, which is equal to or less than the first angle; adjusting a position of at least one of the illumination optical system, the transparent substrate, and the detection optical system so that a field-of-view of the detection optical system covers a first region where the light meets a first surface of the transparent substrate and does not cover a second region where light meets a second surface of the transparent substrate, the second surface being opposite to the first surface; illuminating the transparent substrate; and detecting light scattered from the transparent substrate.Type: GrantFiled: October 31, 2017Date of Patent: August 4, 2020Assignee: Corning IncorporatedInventors: Chong Pyung An, Uta-Barbara Goers, En Hong, Sung-chan Hwang, Ji Hwa Jung, Tae-ho Keem, Philip Robert LeBlanc, Hyeong-cheol Lee, Michal Mlejnek, Johannes Moll, Rajeshkannan Palanisamy, Sung-jong Pyo, Amanda Kathryn Thomas, Correy Robert Ustanik
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Patent number: 10677739Abstract: A method of inspecting defects of a transparent substrate may include: illuminating a transparent substrate; calculating an incidence angle range of light so that a first region where the light meets a first surface of the transparent substrate and a second region where light meets a second surface being opposite the first surface of the transparent substrate do not overlap each other; adjusting an incidence angle according to the incidence angle range; adjusting a position of a first detector so that a first field-of-view of the first detector covers the first region and does not cover the second region; adjusting a position of a second detector so that a second field-of-view of the second detector covers the second region and does not cover the first region; and obtaining a first image of the first region and a second image of the second region from the first and second detector, respectively.Type: GrantFiled: October 31, 2017Date of Patent: June 9, 2020Assignee: Corning IncorporatedInventors: Uta-Barbara Goers, En Hong, Sung-chan Hwang, Ji Hwa Jung, Tae-ho Keem, Philip Robert LeBlanc, Rajeshkannan Palanisamy, Sung-jong Pyo, Correy Robert Ustanik
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Publication number: 20190277774Abstract: A method of inspecting defects on a transparent substrate may include: selecting a gradient of an illumination optical system so that light incident on the transparent substrate has a first angle; selecting a gradient of a detection optical system so that an optical axis of the detection optical system located over the transparent substrate has a second angle, which is equal to or less than the first angle; adjusting a position of at least one of the illumination optical system, the transparent substrate, and the detection optical system so that a field-of-view of the detection optical system covers a first region where the light meets a first surface of the transparent substrate and does not cover a second region where light meets a second surface of the transparent substrate, the second surface being opposite to the first surface; illuminating the transparent substrate; and detecting light scattered from the transparent substrate.Type: ApplicationFiled: October 31, 2017Publication date: September 12, 2019Inventors: Chong Pyung An, Uta-Barbara Goers, En Hong, Sung-chan Hwang, Ji Hwa Jung, Tae-ho Keem, Philip Robert LeBlanc, Hyeong-cheol Lee, Michal Mlejnek, Johannes Moll, Rajeshkannan Palanisamy, Sung-jong Pyo, Amanda Kathryn Thomas, Correy Robert Ustanik
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Publication number: 20190257765Abstract: A method of inspecting defects of a transparent substrate may include: illuminating a transparent substrate; calculating an incidence angle range of light so that a first region where the light meets a first surface of the transparent substrate and a second region where light meets a second surface being opposite the first surface of the transparent substrate do not overlap each other; adjusting an incidence angle according to the incidence angle range; adjusting a position of a first detector so that a first field-of-view of the first detector covers the first region and does not cover the second region; adjusting a position of a second detector so that a second field-of-view of the second detector covers the second region and does not cover the first region; and obtaining a first image of the first region and a second image of the second region from the first and second detector, respectively.Type: ApplicationFiled: October 31, 2017Publication date: August 22, 2019Inventors: Uta-Barbara Goers, En Hong, Sung-chan Hwang, Ji Hwa Jung, Tae-ho Keem, Philip Robert LeBlanc, Rajeshkannan Palanisamy, Sung-jong Pyo, Correy Robert Ustanik
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Patent number: 8177952Abstract: Disclosed herein is a method of preparing uranium metal by electrorefining uranium metal, comprising: applying a predetermined current to an anode electrode included in an anode basket receiving fuel segments made of uranium metal and a cathode electrode of carbon material; electrodepositing uranium on the cathode electrode in accordance with the reaction initiated by the applied current; and collecting the electrodeposited uranium by self-weight. An apparatus for electrorefining uranium metal used in the method according to the present invention, comprises: an anode basket (6) receiving fuel segments made of uranium metal and comprising an anode electrode; and a reactor including a cathode electrode (5) made of carbon material and a uranium collector (10) therein.Type: GrantFiled: January 3, 2007Date of Patent: May 15, 2012Assignees: Korea Atomic Energy Research Institute, Korea Hydro & Nuclear Power Co., Ltd.Inventors: Young-Ho Kang, Jong-Hyeon Lee, Sung-Chan Hwang, Joon-Bo Shim, Eung-Ho Kim, Sung-Won Park
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Publication number: 20100084265Abstract: Disclosed is a continuous electrorefining device for recovering metal uranium. The electrorefining device comprises an electrolytic cell 10 having an internal accommodating space filled with electrolyte; a cathode unit 20 including a top plate 22, connecting rods 21 whose top ends are joined to the top plate 22, and cathode electrodes 24 whose top end is joined to lower plates; an anode unit 40 which is placed in a cylinder shape surrounding the cathode electrodes 24; a uranium recovery unit 50 for drawing out the uranium metal by a first drawing-out means; and a transition metal recovery unit 60 for drawing out the metal particles by a second drawing-out means. The cathode unit 20 further comprises an insulating and vibration absorbing member that is interposed between the top plate 22 and the cover plate 12; and a vibration means which is mounted on the top plate 22 to transmit vibration and impact force to the cathode electrode 24 through the connecting rods 21.Type: ApplicationFiled: October 7, 2009Publication date: April 8, 2010Applicants: Korea Atomic Energy Research Institute, Korea Hydro & Nuclear Power Co., Ltd.Inventors: JONG-HYEON LEE, YOUNG-HO KANG, SUNG-CHAN HWANG, HAN-SOO LEE, JOON-BO SHIM, EUNG-HO KIM
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Publication number: 20080296151Abstract: Disclosed herein is a continuous electrolytic refining device for metal uranium, the device comprising a cathode section fixed to the lower side of the heat radiation plate, and having a plurality of graphite cathodes; an anode section encompassing the cathode section to face the cathode section, rotatably fixed to the lower side of the heat radiation plate, and receiving the used nuclear fuel; an electrolytic cell receiving the cathode section and the anode section and filled with electrolytes so as to sink the cathode section and the anode section; an uranium collecting section collecting metal uranium deposited on and detached from the graphite cathode in the lower side of the cathode section inside the electrolytic cell and withdrawing the collected metal uranium to the outside of the electrolytic cell; and a transition metal collecting section coupled with the lower side of the electrolytic cell to withdraw the transition metal particles released from the anode section and collected in the lower side ofType: ApplicationFiled: August 14, 2007Publication date: December 4, 2008Inventors: Jong-Hyeon Lee, Young-Ho Kang, Sung-Chan Hwang, Han-Soo Lee, Eung-Ho Kim, Seong-Won Park