Patents by Inventor Hyun Woo Choi

Hyun Woo Choi 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: 10934404
    Abstract: The present disclosure is an acryl film formed from a main dope solution including an acryl resin shown in the following formula 1 and CSR particles, and peel strength measured in peeling speed of 0.5 mpm is 20 gf/2 inch or less, tear strength is 6 gf or more, has excellent peel strength, thereby visual stain by thickness unevenness is improved, and having excellent tear strength and good brittleness. a and b are an integer and 1 or more. MMA-BMA wherein, MMA is methyl methacrylate unit and BMA is butyl methacrylate unit.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: March 2, 2021
    Assignee: HYOSUNG CHEMICAL CORPORATION
    Inventors: Young Soo Kim, Kyung Soo Kim, Ho Jun Lee, Hyun Woo Choi, Hyeok Mo Kang, Hyun Suk Chung, Bong Choon Kim, Jong Hyuk Eun
  • Patent number: 10671123
    Abstract: A structure for a display device and a display device are provided. A structure for a display device includes a surface of which at least a portion thereof is not flat, and another surface that is flat. A display device includes: a display panel; and a structure contacting the display panel, and at least some of a first surface of the display panel may have a first curved shape, the structure may have a second surface contacting the first surface of the display panel, at least a portion of the second surface of the structure may have a second curved shape, and the structure may include a third surface that is opposite the second surface and is flat, and a driver is attached and fixed to the flat third surface of the structure.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: June 2, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji Yun Bang, Jun Ho Kwack, Jae Young Sim, Hyun-Woo Choi
  • Patent number: 10608156
    Abstract: The present disclosure discloses a thermoelectric module to which a bonding technique for stably driving the thermoelectric module at high temperatures is applied and a method of manufacturing the thermoelectric module. The thermoelectric module according to the present disclosure includes thermoelectric elements including a thermoelectric semiconductor, an electrode which includes a metal material and is connected between the thermoelectric elements, and a bonding layer which is interposed between the thermoelectric element and the electrode to bond the thermoelectric element with the electrode and includes a metal compound including metals of two or more classes as a sintered body of a paste including metal powders of two or more classes.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: March 31, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Dae-Ki Lee, Dong-Sik Kim, Ye-Rok Park, Jae-Ki Lee, Byung-Kyu Lim, Hyun-Woo Choi, Cheol-Hee Park, Seung-Hyup Lee
  • Publication number: 20190292339
    Abstract: The present disclosure is an acryl film formed from a main dope solution including an acryl resin shown in the following formula 1 and CSR particles, and peel strength measured in peeling speed of 0.5 mpm is 20 gf/2 inch or less, tear strength is 6 gf or more, has excellent peel strength, thereby visual stain by thickness unevenness is improved, and having excellent tear strength and good brittleness. a and b are an integer and 1 or more. MMA-BMA wherein, MMA is methyl methacrylate unit and BMA is butyl methacrylate unit.
    Type: Application
    Filed: June 18, 2018
    Publication date: September 26, 2019
    Inventors: Young Soo KIM, Kyung Soo KIM, Ho Jun LEE, Hyun Woo CHOI, Hyeok Mo KANG, Hyun Suk CHUNG, Bong Choon KIM, Jong Hyuk EUN
  • Publication number: 20190215976
    Abstract: A display device includes: a display panel which is curved and displays an image; a cover window which is disposed on a front surface of the display panel at which the image is displayed; and a cover panel which is curved and disposed on a curved back surface of the display panel opposite to the front surface thereof. The cover panel is defined by a flat cover panel which is curved by attachment thereof to the curved back surface of the display panel, and the flat cover panel which is curved to define the cover panel includes a cutout portion therein recessed from an outer edge of the flat cover panel toward a center of the flat cover panel.
    Type: Application
    Filed: January 10, 2019
    Publication date: July 11, 2019
    Inventors: Hyun Woo CHOI, Jun Ho KWACK, Ji Yun BANG, Jae Young SIM
  • Publication number: 20190138057
    Abstract: A structure for a display device and a display device are provided. A structure for a display device includes a surface of which at least a portion thereof is not flat, and another surface that is flat. A display device includes: a display panel; and a structure contacting the display panel, and at least some of a first surface of the display panel may have a first curved shape, the structure may have a second surface contacting the first surface of the display panel, at least a portion of the second surface of the structure may have a second curved shape, and the structure may include a third surface that is opposite the second surface and is flat, and a driver is attached and fixed to the flat third surface of the structure.
    Type: Application
    Filed: July 10, 2018
    Publication date: May 9, 2019
    Inventors: Ji Yun Bang, Jun Ho Kwack, Jae Young Sim, Hyun-Woo Choi
  • Publication number: 20180100088
    Abstract: A cover window according to an exemplary embodiment includes: a polymer resin layer; and a film positioned on one surface of the polymer resin layer, wherein the polymer resin layer includes a matrix and particles having a core/shell structure dispersed in the matrix, a core of the particles includes polymethyl methacrylate, and a shell of the particles includes a copolymer of butyl acrylate and styrene.
    Type: Application
    Filed: October 12, 2017
    Publication date: April 12, 2018
    Inventors: Hung Kun AHN, Dong Eun LEE, Ki Tae KIM, Sang Gu KIM, Hyun-Woo CHOI
  • Publication number: 20180033938
    Abstract: The present disclosure discloses a thermoelectric module to which a bonding technique for stably driving the thermoelectric module at high temperatures is applied and a method of manufacturing the thermoelectric module. The thermoelectric module according to the present disclosure includes thermoelectric elements including a thermoelectric semiconductor, an electrode which includes a metal material and is connected between the thermoelectric elements, and a bonding layer which is interposed between the thermoelectric element and the electrode to bond the thermoelectric element with the electrode and includes a metal compound including metals of two or more classes as a sintered body of a paste including metal powders of two or more classes.
    Type: Application
    Filed: July 21, 2016
    Publication date: February 1, 2018
    Inventors: Dae-Ki LEE, Dong-Sik KIM, Ye-Rok PARK, Jae-Ki LEE, Byung-Kyu LIM, Hyun-Woo CHOI, Cheol-Hee PARK, Seung-Hyup LEE
  • Publication number: 20180033939
    Abstract: Provided are: a compound semiconductor thermoelectric material, having excellent thermoelectric conversion performance by having an excellent power factor and ZT value, and in particular, having excellent thermoelectric conversion performance at a low temperature; a method for manufacturing the same; and a thermoelectric module, a thermoelectric generator, or a thermoelectric cooling device, etc. using the same. The compound semiconductor thermoelectric material according to the present invention comprises: an n-type compound semiconductor matrix; and n-type particles which are dispersed in the matrix, are compound semiconductors which are different from the matrix, and have an average particle size of 1 ?m to 100 ?m.
    Type: Application
    Filed: July 21, 2016
    Publication date: February 1, 2018
    Applicant: LG CHEM, LTD.
    Inventors: O-Jong KWON, Hyun-Woo CHOI, Byung-Kyu LIM, Myung-Jin JUNG, Cheol-Hee PARK
  • Patent number: 9490413
    Abstract: Disclosed is a new compound semiconductor material which may be used for thermoelectric material or the like, and its applications. The compound semiconductor may be represented by Chemical Formula 1 below: Chemical Formula 1 <Chemical Formula 1> Bi2TexSea-xInyMz where, in Chemical Formula 1, M is at least one selected from the group consisting of Cu, Fe, Co, Ag and Ni, 2.5<x<3.0, 3.0?a<3.5, 0<y and 0?z.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: November 8, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Hyun-Woo Choi, Byung-Kyu Lim, Tae-Hoon Kim, Cheol-Hee Park, Eun-Ah You, O-Jong Kwon
  • Publication number: 20160212675
    Abstract: A wireless communication method for an audio-video-navigation (AVN) device of a vehicle includes: receiving position information of an estimated target base station, which is estimated based on navigation path information; receiving a handover command; comparing the position information of the estimated target base station to position information of the AVN device of the vehicle upon receiving the handover command; determining whether a first distance from the estimated target base station to the AVN device of the vehicle is within a threshold distance; requesting pre-sending with respect to the estimated target base station when the first distance is within the threshold distance; synchronizing with the estimated target base station; and generating a confirmation signal in response to the handover command.
    Type: Application
    Filed: July 28, 2015
    Publication date: July 21, 2016
    Inventor: Hyun Woo Choi
  • Patent number: 9392091
    Abstract: A method of controlling a hands-free system for a vehicle includes connecting with a cellular phone through local area communication. A call conversation state is entered when a hands-free function activates. A call termination command is received from a driver. A call termination message is transmitted to the connected cellular phone. When a success message is not received from the connected cellular phone in response to the call termination message, the call termination message is retransmitted by a preset number of times until the success message is received.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: July 12, 2016
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Hyun Woo Choi
  • Publication number: 20160197256
    Abstract: Disclosed is a new compound semiconductor material which may be used for thermoelectric material or the like, and its applications. The compound semiconductor may be represented by Chemical Formula 1 below: Chemical Formula 1 <Chemical Formula 1> Bi2TexSen?xInyMz where in Chemical Formula 1, M is at least one selected from the group consisting of Cu, Fe, Co, Ag and Ni, 2.5<x<3.0, 3.0?a<3.5, 0<y and 0?z.
    Type: Application
    Filed: September 18, 2014
    Publication date: July 7, 2016
    Applicant: LG CHEM, LTD.
    Inventors: Hyun-Woo CHOI, Byung-Kyu LIM, Tae-Hoon KIM, Cheol-Hee PARK, Eun-Ah YOU, O-Jong KWON
  • Publication number: 20160112556
    Abstract: A method of controlling a hands-free system for a vehicle includes connecting with a cellular phone through local area communication. A call conversation state is entered when a hands-free function activates. A call termination command is received from a driver. A call termination message is transmitted to the connected cellular phone. When a success message is not received from the connected cellular phone in response to the call termination message, the call termination message is retransmitted by a preset number of times until the success message is received.
    Type: Application
    Filed: October 20, 2015
    Publication date: April 21, 2016
    Inventor: Hyun Woo CHOI
  • Patent number: D766315
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: September 13, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Woo Choi, Jong-Il Jeong, Sook-Kyung Lee, Ji-Hye Myung, Bong-Hee Han
  • Patent number: D766961
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: September 20, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Woo Choi, Ji-Na Lee, Jong-Il Jeong, Ji-Hye Myung, Bong-Hee Han
  • Patent number: D770475
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: November 1, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Woo Choi, Jong-Il Jeong, Sook-Kyung Lee, Ji-Hye Myung, Bong-Hee Han
  • Patent number: D770513
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: November 1, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Woo Choi, Jong-Il Jeong, Sook-Kyung Lee, Ji-Hye Myung, Bong-Hee Han
  • Patent number: D771073
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: November 8, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Woo Choi, Jong-Il Jeong, Ji-Hye Myung, Bong-Hee Han
  • Patent number: D771074
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: November 8, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Woo Choi, Jong-Il Jeong, Sook-Kyung Lee, Ji-Hye Myung, Bong-Hee Han