Patents by Inventor In Cheol Hwang

In Cheol 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).

  • Patent number: 11538879
    Abstract: A display device includes an organic light emitting diode, a first transistor driving the organic light emitting diode, a second transistor transmitting a data signal to the first transistor, a third transistor transmitting a first power voltage to the first transistor, wherein a semiconductor pattern of the first transistor is disposed over a semiconductor pattern of the second transistor, a semiconductor pattern of the third transistor is disposed over the semiconductor pattern of the first transistor, a lower transistor insulating film is disposed between the semiconductor pattern of the first transistor and the semiconductor pattern of the second transistor, and an upper transistor insulating film is disposed between the semiconductor pattern of the first transistor and the semiconductor pattern of the third transistor.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: December 27, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: June Hwan Kim, Tae Young Kim, Jong Woo Park, Ki Ju Im, Ji Ho Moon, Hyun Cheol Hwang
  • Publication number: 20220395410
    Abstract: The present invention relates to a roll-type hook tape for providing a disposable diaper hook member, which is more stably fastened to a loop member which is a counterpart of the hook member, and greatly contributes to manufacturing and commercialization in the form of a roll.
    Type: Application
    Filed: January 3, 2022
    Publication date: December 15, 2022
    Inventors: JONG RYEP KIM, KWANG SU YEO, MAN BAE LIM, JUNG IN PARK, SE CHEOL HWANG
  • Patent number: 11475835
    Abstract: A display device includes a plurality of pixels. Each pixel includes a first transistor that controls an amount of current received from a first power supply voltage line connected via a second node to an organic light emitting diode in response to a voltage of a first node, a second transistor connected between a data line and the second node and that includes a first gate electrode connected to a first scan line, a light emitting line connected to a gate electrode of at least one light emitting transistor located in a current path between the first power supply voltage line and the organic light emitting diode, and a seventh transistor connected between one of at least one second gate electrode of the second transistor and the light emitting line. Accordingly, a threshold voltage of a switching transistor included in each of the plurality of pixels may be negatively shifted.
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: October 18, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyo Jung Kim, Tae Young Kim, Yong Sung Park, Jong Woo Park, Mi Seon Seo, Keun Soo Lee, Ki Ju Im, Dae Youn Cho, Young Tae Choi, Hyun Cheol Hwang
  • Patent number: 11405540
    Abstract: A printed circuit board of a camera module according to various embodiments of the disclosure includes: a ground portion constructed on the printed circuit board; a conductive member which is disposed to cover the ground portion and includes a first opening at a location corresponding to the ground portion; and an adhesive layer which is interposed between the printed circuit board and the conductive member and includes a second opening at a location corresponding to the ground portion, wherein the conductive member may be electrically coupled to the ground portion through a solder constructed on the first opening and the second opening. Other embodiments are also possible.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: August 2, 2022
    Inventors: Gwan Yong Lee, Cheol Hwang, Dohyun Ahn
  • Publication number: 20220182516
    Abstract: A camera module is provided and includes an image sensor and a printed circuit board (PCB) structure electrically coupled to the image sensor. The PCB structure may include a first layer disposed under the image sensor, a second layer disposed between the first layer and the image sensor, a first conductive pattern formed on the first layer and electrically coupled to the image sensor through one end portion of the first conductive pattern so as to transfer a signal obtained from the image sensor to an external electronic component, and a first open space formed in the second layer such that the one end portion of the first conductive pattern is exposed to a surface of the PCB structure.
    Type: Application
    Filed: February 22, 2022
    Publication date: June 9, 2022
    Inventors: Gwanyong LEE, Cheol HWANG
  • Publication number: 20220166149
    Abstract: An antenna device is provided. The antenna device includes a first antenna patch configured to transmit and receive an RF signal in a first frequency bandwidth and disposed a first dielectric layer; a second antenna patch disposed on a second dielectric layer and coupled to the first antenna patch; a third antenna patch disposed on a third dielectric layer and coupled to the second antenna patch; and a fourth antenna patch configured to transmit and receive an RF signal in the second frequency bandwidth, wherein the second antenna patch includes a plurality of first sub-antenna patches that do not overlap the first antenna patch, and the third antenna patch includes a plurality of second sub-antenna patches that overlap the first sub-antenna patches.
    Type: Application
    Filed: June 29, 2021
    Publication date: May 26, 2022
    Applicants: SAMSUNG ELECTRO-MECHANICS CO., LTD., Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Won Wook SO, Jeongki RYOO, Woncheol LEE, Youngsik HUR, Keum Cheol HWANG, Nam Heung KIM, Yong-serk KIM
  • Patent number: 11316281
    Abstract: An antenna apparatus may include: a feed via; a patch antenna pattern electrically connected to the feed via; and coupling patterns spaced apart from the patch antenna pattern and spaced apart from each other. At least one of the coupling patterns may protrude in a direction in which the at least one of the coupling patterns is spaced apart from the patch antenna pattern.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: April 26, 2022
    Assignees: Samsung Electro-Mechanics Co., Ltd., Research & Business Foundation Sungkyunkwan University
    Inventors: Myeong Woo Han, Dae Ki Lim, Keum Cheol Hwang, Sung Woo Lee, Jeong Ki Ryoo
  • Publication number: 20220123479
    Abstract: An antenna apparatus includes: a ground plane including first sides parallel to a first direction and second sides parallel to a second direction, on a plane formed in the first and second directions; a dielectric layer disposed on the ground plane in a third direction; an antenna patch overlapping the ground plane in the third direction; and vias connected to the ground plane and passing through at least a portion of the dielectric layer. Edges of the vias at least partially overlap the first sides of the ground plane in the third direction.
    Type: Application
    Filed: April 15, 2021
    Publication date: April 21, 2022
    Applicants: SAMSUNG ELECTRO-MECHANICS CO., LTD., Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Won Wook SO, Jeongki RYOO, Woncheol LEE, Youngsik HUR, Keum Cheol HWANG, Nam Heung KIM, Yong-serk KIM
  • Patent number: 11283175
    Abstract: An antenna apparatus includes a ground plane; first and second patch antenna patterns disposed above and spaced apart from a first surface of the ground plane and from each other; a second feed via to provide a second feed path of the second patch antenna pattern, and disposed adjacent to an edge of the second patch antenna pattern; a first feed via to provide a first feed path of the first patch antenna pattern, and disposed adjacent to an edge of the first patch antenna pattern that is opposite to the second patch antenna pattern; a first coupling pattern disposed between the first patch antenna pattern and the second patch antenna pattern along the first direction; a ground via; and a second coupling pattern disposed between the second patch antenna pattern and the first coupling pattern along the first direction.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: March 22, 2022
    Assignees: Samsung Electro-Mechanics Co., Ltd., Research & Business Foundation Sungkyunkwan University
    Inventors: Myeong Woo Han, Nam Ki Kim, Young Sik Hur, Yong Serk Kim, Keum Cheol Hwang, Nam Heung Kim, Jeong Ki Ryoo
  • Publication number: 20220065534
    Abstract: A furnace for producing a secondary battery cathode material according to an exemplary embodiment of the present invention includes; a chamber of which the internal space is heated by a heater; a conveyer installed in the chamber and conveying a sagger containing raw material power of a cathode material of a secondary battery in one direction; and a gas supply nozzle and an exhaust port installed in the chamber. The chamber is divided into a front chamber, an intermediate chamber, and a rear chamber. The intermediate chamber has an inlet shutter and an outlet shutter for sealing the internal space thereof, and an exhaust port of the intermediate chamber is connected to an exhaust device for discharging gas.
    Type: Application
    Filed: December 19, 2019
    Publication date: March 3, 2022
    Inventors: Keeyoung JUNG, Choongmo YANG, Yoon Cheol PARK, Soon Cheol HWANG, Yeong Woo KIM, Young Min PARK
  • Patent number: 11232754
    Abstract: A display device includes: a substrate; a gate pattern disposed on the substrate; an oxide semiconductor layer disposed on the substrate, the oxide semiconductor layer includes a channel region that overlaps with the gate pattern; and an insulating film disposed on the gate pattern, the insulating film includes majority carrier supporting ions, wherein the gate pattern includes a plurality of gate holes, wherein the gate holes are formed inside a region of the gate pattern that does not overlap with the channel region of the oxide semiconductor layer, and wherein the channel region of the oxide semiconductor layer includes the majority carrier supporting ions.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: January 25, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ki Ju Im, Tae Young Kim, Hyo Jung Kim, Jong Woo Park, Young Tae Choi, Hyun Cheol Hwang
  • Patent number: 11205388
    Abstract: A method of operating a display device may include the following steps: in a first frame period, before turning off a gate initialization transistor, changing an initialization voltage from a first level to a second level and subsequently returning the initialization voltage to the first level; in a second frame period, before turning off the gate initialization transistor, changing the initialization voltage from the first level to the second level and/or a third level and subsequently returning the initialization voltage to the first level. The display device may include the gate initialization transistor and a driving transistor. A first electrode the gate initialization transistor may receive the initialization voltage. A second electrode of the gate initialization transistor may be electrically connected to a gate electrode of the driving transistor. The first level, the second level, and the third level may be unequal to each other.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: December 21, 2021
    Inventors: Ki Ju Im, Jong Woo Park, Hyun Cheol Hwang
  • Patent number: 11152603
    Abstract: The present invention relates to a saggar for firing an active material of a secondary battery, a method for manufacturing the saggar, and a method for firing the active material. The saggar for firing an active material of a secondary battery according to the present invention has a coating layer formed on a bottom surface or a wall surface thereof so as to collect carbon dioxide. By means of the coating layer, the concentration of the carbon dioxide in the saggar can be lowered by collecting the carbon dioxide that is a by-product resulting from a firing reaction, thereby enabling a reduction in the amount of remaining lithium in the active material. The saggar of the present invention provides the saggar for firing an active material of a secondary battery, wherein the saggar has at least one through hole in the bottom surface, or the bottom surface and wall surfaces thereof so as to communicate a gas.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: October 19, 2021
    Assignee: RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Young-Min Park, Soon-Cheol Hwang, Choong-Mo Yang, Woo-Taek Kim
  • Patent number: 11121477
    Abstract: An antenna apparatus includes a ground plane; first and second patch antenna patterns disposed above and spaced apart from the ground plane, and spaced apart from each other; a first feed via providing a first feed path of the first patch antenna pattern through a first point disposed adjacent to an edge of the first patch antenna pattern in a direction spaced apart from the second patch antenna pattern; a second feed via providing a second feed path of the second patch antenna pattern through a second point disposed adjacent to an edge of the second patch antenna pattern in a direction spaced apart from the first patch antenna pattern; and a first coupling pattern spaced apart from the first and second patch antenna patterns between the first and second patch antenna patterns, and defining a first internal space exposed towards the first patch antenna pattern.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: September 14, 2021
    Assignees: SAMSUNG ELECTRO-MECHANICS CO., LTD., RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Myeong Woo Han, Dae Ki Lim, Yong Serk Kim, Keum Cheol Hwang, Nam Heung Kim, Won Cheol Lee, Young Sik Hur
  • Publication number: 20210256906
    Abstract: A display device includes a plurality of pixels. Each pixel includes a first transistor that controls an amount of current received from a first power supply voltage line connected via a second node to an organic light emitting diode in response to a voltage of a first node, a second transistor connected between a data line and the second node and that includes a first gate electrode connected to a first scan line, a light emitting line connected to a gate electrode of at least one light emitting transistor located in a current path between the first power supply voltage line and the organic light emitting diode, and a seventh transistor connected between one of at least one second gate electrode of the second transistor and the light emitting line. Accordingly, a threshold voltage of a switching transistor included in each of the plurality of pixels may be negatively shifted.
    Type: Application
    Filed: April 9, 2021
    Publication date: August 19, 2021
    Inventors: Hyo Jung Kim, Tae Young Kim, Yong Sung Park, Jong Woo Park, Mi Seon Seo, Keun Soo Lee, Ki Ju Im, Dae Youn Cho, Young Tae Choi, Hyun Cheol Hwang
  • Publication number: 20210249491
    Abstract: A display device includes an organic light emitting diode, a first transistor driving the organic light emitting diode, a second transistor transmitting a data signal to the first transistor, a third transistor transmitting a first power voltage to the first transistor, wherein a semiconductor pattern of the first transistor is disposed over a semiconductor pattern of the second transistor, a semiconductor pattern of the third transistor is disposed over the semiconductor pattern of the first transistor, a lower transistor insulating film is disposed between the semiconductor pattern of the first transistor and the semiconductor pattern of the second transistor, and an upper transistor insulating film is disposed between the semiconductor pattern of the first transistor and the semiconductor pattern of the third transistor.
    Type: Application
    Filed: November 19, 2020
    Publication date: August 12, 2021
    Applicant: Samsung Display Co., LTD.
    Inventors: June Hwan KIM, Tae Young KIM, Jong Woo PARK, Ki Ju IM, Ji Ho MOON, Hyun Cheol HWANG
  • Publication number: 20210153718
    Abstract: A tape cleaner is proposed. In the tape cleaner, the structure of the cleaner is simple, weight and volume thereof are minimized, the generation of noise is reduced during use, and the process of replacing an adhesive tape roll is performed rapidly and easily. The tape cleaner includes: an adhesive tape roll on which an adhesive tape is wound; a roll fitting part over which the adhesive tape roll is fitted; a handle part provided at a side of the roll fitting part; a roll-rotation guide part provided on the roll fitting part to guide rotational movement of the adhesive tape roll; and a noise reduction part provided in the roll fitting part to discharge and reduce noise generated during the rotational movement of the adhesive tape roll.
    Type: Application
    Filed: July 31, 2020
    Publication date: May 27, 2021
    Applicant: KWANGJIN IND. CO., LTD.
    Inventors: Hyeong-Cheol HWANG, Sung-Mi JUNG, Young-Im CHO, Heon-Joo JEONG
  • Patent number: 11017719
    Abstract: A display device includes a plurality of pixels. Each pixel includes a first transistor that controls an amount of current received from a first power supply voltage line connected via a second node to an organic light emitting diode in response to a voltage of a first node, a second transistor connected between a data line and the second node and that includes a first gate electrode connected to a first scan line, a light emitting line connected to a gate electrode of at least one light emitting transistor located in a current path between the first power supply voltage line and the organic light emitting diode, and a seventh transistor connected between one of at least one second gate electrode of the second transistor and the light emitting line. Accordingly, a threshold voltage of a switching transistor included in each of the plurality of pixels may be negatively shifted.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: May 25, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyo Jung Kim, Tae Young Kim, Yong Sung Park, Jong Woo Park, Mi Seon Seo, Keun Soo Lee, Ki Ju Im, Dae Youn Cho, Young Tae Choi, Hyun Cheol Hwang
  • Publication number: 20210151898
    Abstract: An antenna apparatus includes a ground plane; first and second patch antenna patterns disposed above and spaced apart from the ground plane, and spaced apart from each other; a first feed via providing a first feed path of the first patch antenna pattern through a first point disposed adjacent to an edge of the first patch antenna pattern in a direction spaced apart from the second patch antenna pattern; a second feed via providing a second feed path of the second patch antenna pattern through a second point disposed adjacent to an edge of the second patch antenna pattern in a direction spaced apart from the first patch antenna pattern; and a first coupling pattern spaced apart from the first and second patch antenna patterns between the first and second patch antenna patterns, and defining a first internal space exposed towards the first patch antenna pattern.
    Type: Application
    Filed: February 26, 2020
    Publication date: May 20, 2021
    Applicants: Samsung Electro-Mechanics Co., Ltd., Research & Business Foundation Sungkyunkwan University
    Inventors: Myeong Woo HAN, Dae Ki LIM, Yong Serk KIM, Keum Cheol HWANG, Nam Heung KIM, Won Cheol LEE, Young Sik HUR
  • Publication number: 20210151889
    Abstract: An antenna apparatus includes a ground plane; first and second patch antenna patterns disposed above and spaced apart from a first surface of the ground plane and from each other; a second feed via to provide a second feed path of the second patch antenna pattern, and disposed adjacent to an edge of the second patch antenna pattern; a first feed via to provide a first feed path of the first patch antenna pattern, and disposed adjacent to an edge of the first patch antenna pattern that is opposite to the second patch antenna pattern; a first coupling pattern disposed between the first patch antenna pattern and the second patch antenna pattern along the first direction; a ground via; and a second coupling pattern disposed between the second patch antenna pattern and the first coupling pattern along the first direction.
    Type: Application
    Filed: March 18, 2020
    Publication date: May 20, 2021
    Applicants: SAMSUNG ELECTRO-MECHANICS CO., LTD., Research & Business Foundation Sungkyunkwan University
    Inventors: Myeong Woo HAN, Nam Ki KIM, Young Sik HUR, Yong Serk KIM, Keum Cheol HWANG, Nam Heung KIM, Jeong Ki RYOO