Patents by Inventor Ki Hyun Sung

Ki Hyun Sung 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: 11881160
    Abstract: A display device includes: a pixel component including pixels; a timing controller configured to calculate a load variation between previous input grayscale values corresponding to a previous frame and current input grayscale values corresponding to a current frame; a current sensor configured to sense a current flowing through the pixels during the current frame and generate a global current value for the sensed current, store time points at which the global current value becomes equal to preset threshold current values, respectively, and generate a global current variation rate corresponding to a section between the stored time points of the current frame; and a scale factor provider configured to control a scale factor in a period of the current frame in the case where the load variation is equal to or more than a reference load variation.
    Type: Grant
    Filed: February 8, 2023
    Date of Patent: January 23, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Sik Yoon, Jong Woon Kim, Won Jin Seo, Ki Hyun Sung, Ye Seul Lee, Dae Ho Hwang
  • Publication number: 20240021143
    Abstract: A display device includes: a pixel component including pixels; a timing controller configured to calculate a load variation between previous input grayscale values corresponding to a previous frame and current input grayscale values corresponding to a current frame; a current sensor configured to sense a current flowing through the pixels during the current frame and generate a global current value for the sensed current, store time points at which the global current value becomes equal to preset threshold current values, respectively, and generate a global current variation rate corresponding to a section between the stored time points of the current frame; and a scale factor provider configured to control a scale factor in a period of the current frame in the case where the load variation is equal to or more than a reference load variation.
    Type: Application
    Filed: February 8, 2023
    Publication date: January 18, 2024
    Inventors: Hyun Sik YOON, Jong Woon KIM, Won Jin SEO, Ki Hyun SUNG, Ye Seul LEE, Dae Ho HWANG
  • Patent number: 10822483
    Abstract: A polypropylene resin composition includes: a base resin including a propylene homopolymer having a melt index of 20 g/10 min to 35 g/10 min measured at a temperature of 230° C. and under a load of 2.16 kg and an ethylene-propylene copolymer having a melt index of 90 g/10 min to 100 g/10 min measured at a temperature of 230° C. and under a load of 2.16 kg; a thermoplastic elastomer having a melt index of 10 g/10 min to 40 g/10 min measured at a temperature of 230° C. and under a load of 2.16 kg; an inorganic filler; and a sodium phosphate-based nucleating agent.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: November 3, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation, LG Hausys Ltd., GS Caltex
    Inventors: Hyun Gyung Kim, Hee Joon Lee, Seung Jae Lee, Hyung Tak Lee, Ki Hyun Sung, Chun Ho Park
  • Publication number: 20200062941
    Abstract: A polypropylene resin composition includes a polypropylene resin having a melting index of 80 g/10 min to 95 g/10 min measured under a temperature of 230° C. and a load of 2.16 kg; a thermoplastic elastomer; and a needle-shaped inorganic filler having an aspect ratio of 5 to 10.
    Type: Application
    Filed: August 27, 2018
    Publication date: February 27, 2020
    Inventors: Chun Ho PARK, Ki Hyun SUNG, Soo Min LEE, Jae Jung YOO, Hyun Kyung KIM, Hee Joon LEE
  • Patent number: 10533086
    Abstract: A polypropylene resin composition includes: a base resin; a thermoplastic elastomer; and an inorganic filler; a major-axis diameter/minor-axis diameter, which is an aspect ratio of the inorganic filler, is 2 to 8. A molded product includes an injection molding of the polypropylene resin composition. The polypropylene resin composition may simultaneously impart excellent rigidity, impact resistance, and excellent dimensional stability even when applied to a molded product having a small thickness, while maintaining a low specific gravity.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: January 14, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation, LG Hauseys, Ltd., DAE HA Co., Ltd.
    Inventors: Hyun Gyung Kim, Hee Joon Lee, Ju-Hyun Ji, Chun Ho Park, Ki Hyun Sung, Kwan Suk Ryu
  • Patent number: 10316175
    Abstract: A polypropylene resin composition includes a base resin including an isotactic polypropylene resin, a first atactic polypropylene resin, and a second atactic polypropylene resin; a thermoplastic elastomer; and an inorganic filler, in which a weight average molecular weight of the second atactic polypropylene resin is higher than a weight average molecular weight of the first atactic polypropylene resin.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: June 11, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation, LG Hausys Ltd., Lotte Chemical Corporation
    Inventors: Hyun Gyung Kim, Ki Hyun Sung, Seung Wook Park, Chun Ho Park, Young Gyu You
  • Patent number: 10294360
    Abstract: A polypropylene resin composition includes a base resin, a thermoplastic elastomer, and an inorganic filler. The base resin is a polypropylene-based mixed resin including a first resin, a second resin, a third resin, and a fourth resin. The first resin is a homopolypropylene resin. The second resin, the third resin, and the fourth resin are each a polypropylene-based block copolymer resin. A melt index of the second resin measured at a temperature of 230° C. and under a load of 2.16 kg is higher than a melt index of each of the third resin and the fourth resin measured under the same condition. A flexural modulus of the third resin measured in accordance with ASTM D790 is lower than a flexural modulus of the fourth resin measured under the same condition.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: May 21, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation, LG Hausys, Ltd., Hyundai EP Co., Ltd.
    Inventors: Hyun Gyung Kim, Hee Joon Lee, Eun Seob Shin, Hyeok Lee, Ki Hyun Sung, Chun Ho Park
  • Publication number: 20180258274
    Abstract: A polypropylene resin composition includes a base resin, a thermoplastic elastomer, and an inorganic filler. The base resin is a polypropylene-based mixed resin including a first resin, a second resin, a third resin, and a fourth resin. The first resin is a homopolypropylene resin. The second resin, the third resin, and the fourth resin are each a polypropylene-based block copolymer resin. A melt index of the second resin measured at a temperature of 230° C. and under a load of 2.16 kg is higher than a melt index of each of the third resin and the fourth resin measured under the same condition. A flexural modulus of the third resin measured in accordance with ASTM D790 is lower than a flexural modulus of the fourth resin measured under the same condition.
    Type: Application
    Filed: December 15, 2017
    Publication date: September 13, 2018
    Inventors: Hyun Gyung KIM, Hee Joon LEE, Eun Seob SHIN, Hyeok LEE, Ki Hyun Sung, Chun Ho PARK
  • Publication number: 20180258267
    Abstract: A polypropylene resin composition includes: a base resin including a propylene homopolymer having a melt index of 20 g/10 min to 35 g/10 min measured at a temperature of 230° C. and under a load of 2.16 kg and an ethylene-propylene copolymer having a melt index of 90 g/10 min to 100 g/10 min measured at a temperature of 230° C. and under a load of 2.16 kg; a thermoplastic elastomer having a melt index of 10 g/10 min to 40 g/10 min measured at a temperature of 230° C. and under a load of 2.16 kg; an inorganic filler; and a sodium phosphate-based nucleating agent.
    Type: Application
    Filed: December 12, 2017
    Publication date: September 13, 2018
    Inventors: Hyun Gyung Kim, Hee Joon Lee, Seung Jae Lee, Hyung Tak Lee, Ki Hyun Sung, Chun Ho Park
  • Publication number: 20180258269
    Abstract: The present disclosure provides a polypropylene resin composition including a base resin, a thermoplastic elastomer, and a modified inorganic filler.
    Type: Application
    Filed: January 12, 2018
    Publication date: September 13, 2018
    Inventors: Hyun Gyung KIM, Hee Joon LEE, Yoon Hwan LEE, Jae Gon LIM, Ki Hyun SUNG, Chun Ho PARK
  • Publication number: 20180258270
    Abstract: A polypropylene resin composition includes: a base resin; a thermoplastic elastomer; and an inorganic filler; a major-axis diameter/minor-axis diameter, which is an aspect ratio of the inorganic filler, is 2 to 8. A molded product includes an injection molding of the polypropylene resin composition; The polypropylene resin composition may simultaneously impart excellent rigidity, impact resistance, and excellent dimensional stability even when applied to a molded product having a small thickness, while maintaining a low specific gravity.
    Type: Application
    Filed: December 14, 2017
    Publication date: September 13, 2018
    Inventors: Hyun Gyung KIM, Hee Joon LEE, Ju-Hyun JI, Chun Ho PARK, Ki Hyun SUNG, Kwan Suk RYU
  • Publication number: 20180258268
    Abstract: A polypropylene resin composition includes a base resin including an isotactic polypropylene resin, a first atactic polypropylene resin, and a second atactic polypropylene resin; a thermoplastic elastomer; and an inorganic filler, in which a weight average molecular weight of the second atactic polypropylene resin is higher than a weight average molecular weight of the first atactic polypropylene resin.
    Type: Application
    Filed: December 22, 2017
    Publication date: September 13, 2018
    Inventors: Hyun Gyung KIM, Ki Hyun SUNG, Seung Wook PARK, Chun Ho PARK, Young Gyu YOU