Patents by Inventor Chan Hwang

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).

  • Publication number: 20250148961
    Abstract: 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: Application
    Filed: June 14, 2024
    Publication date: May 8, 2025
    Inventors: Dong Hwan JEON, Min Woo BYUN, Min Joo KIM, Jong Sik SHIM, Seon I JEONG, Sung Chan HWANG
  • Publication number: 20250148979
    Abstract: 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: Application
    Filed: August 7, 2024
    Publication date: May 8, 2025
    Inventors: Min Joo KIM, Min Woo BYUN, Jong Sik SHIM, Dong Hwan JEON, Seon I JEONG, Sung Chan HWANG
  • Publication number: 20250147409
    Abstract: A method for manufacturing a semiconductor device includes providing a first pre-reticle including a first overlay mark and a first on-cell pattern. A second pre-reticle is provided that includes a second overlay mark and a second on-cell pattern. A first pattern is formed from the first pre-reticle using a first illumination system. A second pattern is formed from the second pre-reticle using a second illumination system. An overlay error is measured between the first pattern and the second pattern. A corrected reticle is formed based on the measured overlay error.
    Type: Application
    Filed: July 16, 2024
    Publication date: May 8, 2025
    Inventors: Woo-Yong JUNG, Joon Hyun KIM, Seung Yoon LEE, Jeong Jin LEE, Chan HWANG
  • Publication number: 20250129059
    Abstract: It is an object of the present invention to provide a compound that has a high refractive index and a low extinction coefficient in a wavelength range of 450 to 750 nm, and is thus suitably used as a material for a capping layer of an organic EL element. Also, it is another object of the invention to provide an organic EL element including such a compound to improve the light extraction efficiency of the element.
    Type: Application
    Filed: January 12, 2023
    Publication date: April 24, 2025
    Applicant: HODOGAYA CHEMICAL CO., LTD.
    Inventors: Kouki KASE, Hiroki HIRAI, Moon-Chan HWANG, Yuta HIRAYAMA, Shuichi HAYASHI
  • Publication number: 20250104653
    Abstract: 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: Application
    Filed: May 9, 2024
    Publication date: March 27, 2025
    Applicant: 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
  • Publication number: 20250026887
    Abstract: A manufacturing method of a porous polyimide film, includes: preparing a polyamic acid solution at a concentration of 10 to 30 wt % by dissolving a diamine compound and a dianhydride in a solvent; applying the prepared polyamic acid solution to a substrate to prepare a film and then immersing the same in a non-solvent for 30 minutes to 180 minutes; and taking out the immersed film and thermally curing the same; and a porous polyimide film manufactured thereby.
    Type: Application
    Filed: August 25, 2023
    Publication date: January 23, 2025
    Applicant: KYUNGPOOK NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Ki-Ho NAM, Seongjun KHIM, Yun Chan HWANG
  • Publication number: 20250012736
    Abstract: A method of optimizing an overlay measurement condition includes measuring, for each overlay measurement condition of multiple overlay measurement conditions, an overlay at multiple positions on a substrate; calculating, for each of the multiple overlay measurement conditions, key parameter indexes (KPIs) based on the measured overlay; converting, for each of the multiple overlay measurement conditions, the KPIs into key parameter function (KPF) values based on a KPF, where each of the KPFs has a same dimensional representation; integrating, for each of the multiple overlay measurement conditions, the KPF values to generate an integrated KPF value; and selecting an optimized overlay measurement condition from among the multiple overlay measurement conditions based on the integrated KPF values associated with each of the multiple overlay measurement conditions.
    Type: Application
    Filed: May 13, 2024
    Publication date: January 9, 2025
    Inventors: Dohun Kim, Mincheol Kwak, Junseong Yoon, Jeongjin Lee, Seungyoon Lee, Chan Hwang
  • Publication number: 20240421372
    Abstract: Provided are a regeneration solution of a spent secondary battery cathode material, the regeneration solution including p-type redox molecules, a solvent, and a lithium salt, in which the p-type redox molecules have a reduction potential that is higher than or equal to 1.55 volt (V) and lower than or equal to 3.7 V with respect to a reduction potential (vs Li/Li+) of lithium, a method of regenerating a cathode material and a regenerated cathode material using this, and a method of recycling the regeneration solution.
    Type: Application
    Filed: January 3, 2024
    Publication date: December 19, 2024
    Inventors: Min Ah LEE, Ji Hyun HONG, Hun Gi JUNG, Jin Kwan CHOI, Kyung Yoon CHUNG, Ui Chan HWANG
  • Publication number: 20240360358
    Abstract: It is an object of the present invention to provide a compound that has a high refractive index and a low extinction coefficient in a wavelength range of 450 to 750 nm, which is favorably used as a material for a capping layer of an organic EL element. Also, it is another object of the present invention to provide an organic EL element whose light extraction efficiency has been improved by using the compound. The present invention is directed to a compound represented by a general formula (1) or (2) below: where A represents a substituted or unsubstituted aromatic hydrocarbon group or the like, B and C are optionally the same or different, and represent an unsubstituted naphthyl group, an unsubstituted quinolyl group, or the like, and each L is optionally the same or different, and represents a single bond, a substituted or unsubstituted divalent aromatic hydrocarbon group, or the like.
    Type: Application
    Filed: September 20, 2022
    Publication date: October 31, 2024
    Applicant: HODOGAYA CHEMICAL CO., LTD.
    Inventors: Kouki KASE, Eriko CHIBA, Byung-Sun YANG, Moon-Chan HWANG, Yuta HIRAYAMA, Shuichi HAYASHI
  • Publication number: 20240352009
    Abstract: In order to prevent deterioration inside an organic EL element and significantly improve the light extraction efficiency, an object of the present invention is to provide a compound that absorbs light rays with wavelengths of 400 to 410 nm of sunlight, thereby preventing them from affecting a material inside the element, and has a high refractive index in a wavelength range of 450 to 750 nm. The present invention provides an amine compound having a specific benzazole ring structure having a high refractive index. An organic EL element having excellent light emission efficiency is obtained by using the compound of the present invention as a material constituting a capping layer.
    Type: Application
    Filed: October 26, 2022
    Publication date: October 24, 2024
    Applicant: HODOGAYA CHEMICAL CO., LTD.
    Inventors: Kouki KASE, Byung-Sun YANG, Moon-Chan HWANG, Junichi IZUMIDA, Yuta HIRAYAMA, Shuichi HAYASHI
  • Publication number: 20240347007
    Abstract: 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: Application
    Filed: January 26, 2024
    Publication date: October 17, 2024
    Inventors: Min Woo BYUN, Won Kyu KWAK, Seon I JEONG, Min Joo KIM, Dong Hwan JEON, Sung Chan HWANG
  • Publication number: 20240313066
    Abstract: A method of fabricating a semiconductor device may include providing a substrate including cell and peripheral regions, forming a cell gate structure on the cell region, forming a peripheral gate structure on the peripheral region, forming a bit line structure on the cell region, forming a preliminary conductive layer to cover the bit line structure and the peripheral gate structure, and etching the preliminary conductive layer to form a landing pad and peripheral conductive pads. The etching of the preliminary conductive layer may include forming lower and photoresist layers on the preliminary conductive layer, performing a first exposure process on the photoresist layer, performing a second exposure process on the photoresist layer, and etching the preliminary conductive layer using the photoresist and lower layers as an etch mask. The first exposure process may expose a portion of the photoresist layer that is on the cell region to light.
    Type: Application
    Filed: January 10, 2024
    Publication date: September 19, 2024
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Soo Kyung KIM, Chan HWANG, Jonghyun JUNG, Moosong LEE
  • Publication number: 20240258178
    Abstract: A method of detecting overlay of patterns includes forming a lower pattern and an upper pattern on a substrate. A sample pattern is drawn that has a common tangential line with the lower pattern. A position of a real center of gravity of the lower pattern is calculated using the common tangential line.
    Type: Application
    Filed: December 27, 2023
    Publication date: August 1, 2024
    Inventors: Minsu LEE, Minsu KANG, Sangho YUN, Chan HWANG
  • Publication number: 20240233639
    Abstract: 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: Application
    Filed: October 7, 2023
    Publication date: July 11, 2024
    Inventors: Min Woo BYUN, Min Joo KIM, Seon I JEONG, Chae Han HYUN, Sung Chan HWANG
  • Publication number: 20240234332
    Abstract: A semiconductor device includes a first stack structure in a first region, a first channel structure in contact with the substrate, a second stack structure on the first stack structure, a second channel structure connected to the first channel structure, a third stack structure on the second stack structure, a third channel structure connected to the second channel structure, a first mold structure in a second region, first overlay structures on the first mold structure, a second mold structure on the first mold structure, second overlay structures on the second mold structure, a third mold structure on the second mold structure, and third overlay structures on the third mold structure, wherein the first to third overlay structures are on an overlay mark region, and the first to third overlay structures are in at least one of quadrants in the overlay mark region.
    Type: Application
    Filed: October 18, 2023
    Publication date: July 11, 2024
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Junseok PARK, Seunghak PARK, Chan HWANG
  • Publication number: 20240224771
    Abstract: 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: Application
    Filed: August 23, 2023
    Publication date: July 4, 2024
    Inventors: Su Jin KIM, Ji Hyun KA, Sung Chan HWANG, Chul Kyu KANG, Dong Hyun KIM, Min Joo KIM, Seon Kyoon MOK
  • Publication number: 20240222201
    Abstract: The method including forming a first photoresist (PR) pattern by exposing first field areas of a first PR layer, forming a second PR pattern by exposing first top field areas and first bottom field areas of a second PR layer, measuring a first top intra-field overlay for the first top field areas and a first bottom intra-field overlay for the first bottom field areas, and determining a top intra-field correction parameter and a bottom intra-field correction parameter based on the first top intra-field overlay and the first bottom intra-field overlay, respectively, may be provided.
    Type: Application
    Filed: August 23, 2023
    Publication date: July 4, 2024
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Inbeom YIM, Jeongjin LEE, Seungyoon LEE, Chan HWANG
  • Publication number: 20240224642
    Abstract: 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: Application
    Filed: August 28, 2023
    Publication date: July 4, 2024
    Inventors: Seon Kyoon MOK, Sung Chan HWANG, Chul Kyu KANG, Dong Hyun KIM, Su Jin KIM, Seon I JEONG, Chae Han HYUN
  • Publication number: 20240213023
    Abstract: A method for fabricating a semiconductor device using an overlay measurement and a semiconductor device fabricated by the method are provided. The method includes forming a lower pattern including a lower overlay key pattern having a first pitch, on a substrate, forming an upper pattern including an upper overlay key pattern having a second pitch different from the first pitch, on the lower pattern, measuring an overlay between the lower overlay key pattern and the upper overlay key pattern, removing the upper overlay key pattern, and after removing the upper overlay key pattern, performing an etching process using the upper pattern as an etching mask.
    Type: Application
    Filed: September 27, 2023
    Publication date: June 27, 2024
    Inventors: Doo Gyu LEE, Jeong Jin LEE, Min-Cheol KWAK, Seung Yoon LEE, Chan HWANG
  • Publication number: 20240181904
    Abstract: A control box for charging includes a second connector disposed at a first end of the control box and configured to be coupled to a first connector provided at a first end of a supply cable configured to be connected to an external power source. The control box includes a retainer configured to prevent separation of the first connector when the first connector and the second connector are completely coupled. A top of the control box is open at a position corresponding to the second connector and the retainer is inserted through the open top and moved up and down.
    Type: Application
    Filed: April 17, 2023
    Publication date: June 6, 2024
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, KOREA ELECTRIC TERMINAL CO., LTD., THN CORPORATION
    Inventors: Yun Jae Jung, Seung Min Yoo, Byeong Kyu Kim, Yun Chan Hwang, Jeong Ki Kyeong, Jong Hyok Kim, Tae Hong Yun, Seong Cheol Hong, Wan June Kim, Ja Min Kim