Patents by Inventor Soonchul CHANG

Soonchul CHANG 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).

  • Organic light-emitting device and compound
    Patent number: 11889756
    Abstract: Provided are an organic light-emitting device having improved luminescent efficiency and a compound.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: January 30, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Taekyung Kim, Sunwoo Kang, Pilgu Kang, Jiyoung Kwon, Soonchul Chang, Jaehoon Hwang
  • ORGANIC LIGHT-EMITTING DEVICE AND DISPLAY APPARATUS INCLUDING THE SAME
    Publication number: 20230180606
    Abstract: Provided are an organic-light-emitting device and a display apparatus including the same. The organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode and including at least one light-emitting unit, wherein the at least one light-emitting unit includes: an emission layer; and a hole transport region between the first electrode and the emission layer and including a first hole transport (HT) layer, the emission layer includes a host, the first HT layer includes a first compound, a minimum bond dissociation energy (BDE1HT) of the first compound is larger than a triplet energy (T1,host) of the host, and a minimum bond dissociation energy (BDEhost) of the host is larger than the triplet energy (T1,host) of the host.
    Type: Application
    Filed: January 27, 2023
    Publication date: June 8, 2023
    Inventors: Jaeyong LEE, Taekyung KIM, Minkyung KIM, Seulong KIM, Pilgu KANG, Jiyoung KWON, Soonchul CHANG, Jaehoon HWANG
  • Organic light-emitting device and display apparatus including the same
    Patent number: 11569454
    Abstract: Provided are an organic-light-emitting device and a display apparatus including the same. The organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode and including at least one light-emitting unit, wherein the at least one light-emitting unit includes: an emission layer; and a hole transport region between the first electrode and the emission layer and including a first hole transport (HT) layer, the emission layer includes a host, the first HT layer includes a first compound, a minimum bond dissociation energy (BDE1HT) of the first compound is larger than a triplet energy (T1,host) of the host, and a minimum bond dissociation energy (BDEhost) of the host is larger than the triplet energy (T1,host) of the host.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: January 31, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jaeyong Lee, Taekyung Kim, Minkyung Kim, Seulong Kim, Pilgu Kang, Jiyoung Kwon, Soonchul Chang, Jaehoon Hwang
  • Condensed cyclic compound, organic light-emitting device including the same, and display apparatus including the organic light-emitting device
    Patent number: 11414430
    Abstract: A condensed cyclic compound is represented by Formula 1. An organic light-emitting device includes: a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode and comprising an emission layer, the organic layer including the condensed cyclic compound represented by Formula 1. A display apparatus includes: a thin-film transistor comprising a source electrode, a drain electrode, and an active layer; and the organic light-emitting device.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: August 16, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seulong Kim, Sunwoo Kang, Pilgu Kang, Jiyoung Kwon, Taekyung Kim, Soonchul Chang, Dahye Cho
  • ORGANIC LIGHT-EMITTING DEVICE
    Publication number: 20210376248
    Abstract: An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; an emission region between the first electrode and the second electrode and including a first emission layer and a second emission layer; and a hole blocking layer between the first emission layer and the first electrode, or between the second emission layer and the second electrode, wherein the second emission layer may be between the first emission layer and the hole blocking layer, the first emission layer may include a first host and a first light-emitting material, the second emission layer may include a second host and a second light-emitting material, and the first light-emitting material and the second light-emitting material may respectively be included in the first emission layer and the second emission layer at an identical ratio.
    Type: Application
    Filed: May 25, 2021
    Publication date: December 2, 2021
    Inventors: Jiyoung SONG, Seulong KIM, Pilgu KANG, Eungyoung PARK, Hajin SONG, Hyekyun LEE, Soonchul CHANG, Dongseob JEONG, Yangjin CHO, Jina HUR
  • CONDENSED CYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20210028368
    Abstract: A condensed cyclic compound is represented by Formula 1 and satisfies Equation 1. An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; an organic layer between the first electrode and the second electrode and including at least one light-emitting unit; and at least one of the condensed cyclic compound. |EH,HOMO?EH,HOMO-1|?0.
    Type: Application
    Filed: July 20, 2020
    Publication date: January 28, 2021
    Inventors: Jiyoung SONG, Seulong KIM, Pilgu KANG, Eungyoung PARK, Soonchul CHANG, Dongseob JEONG, Jaehoon HWANG
  • ORGANIC LIGHT-EMITTING DEVICE AND DISPLAY APPARATUS INCLUDING THE SAME
    Publication number: 20200295271
    Abstract: Provided are an organic-light-emitting device and a display apparatus including the same. The organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode and including at least one light-emitting unit, wherein the at least one light-emitting unit includes: an emission layer; and a hole transport region between the first electrode and the emission layer and including a first hole transport (HT) layer, the emission layer includes a host, the first HT layer includes a first compound, a minimum bond dissociation energy (BDE1HT) of the first compound is larger than a triplet energy (T1,host) of the host, and a minimum bond dissociation energy (BDEhost) of the host is larger than the triplet energy (T1,host) of the host.
    Type: Application
    Filed: March 9, 2020
    Publication date: September 17, 2020
    Inventors: Jaeyong LEE, Taekyung KIM, Minkyung KIM, Seulong KIM, Pilgu KANG, Jiyoung KWON, Soonchul CHANG, Jaehoon HWANG
  • CONDENSED CYCLIC COMPOUND, ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME, AND DISPLAY APPARATUS INCLUDING THE ORGANIC LIGHT-EMITTING DEVICE
    Publication number: 20200190113
    Abstract: A condensed cyclic compound is represented by Formula 1. An organic light-emitting device includes: a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode and comprising an emission layer, the organic layer including the condensed cyclic compound represented by Formula 1. A display apparatus includes: a thin-film transistor comprising a source electrode, a drain electrode, and an active layer; and the organic light-emitting device.
    Type: Application
    Filed: July 17, 2019
    Publication date: June 18, 2020
    Inventors: Seulong Kim, Sunwoo Kang, Pilgu Kang, Jiyoung Kwon, Taekyung Kim, Soonchul Chang, Dahye Cho
  • ORGANIC LIGHT-EMITTING DEVICE AND COMPOUND
    Publication number: 20200075869
    Abstract: Provided are an organic light-emitting device having improved luminescent efficiency and a compound.
    Type: Application
    Filed: July 22, 2019
    Publication date: March 5, 2020
    Inventors: Taekyung Kim, Sunwoo Kang, Pilgu Kang, Jiyoung Kwon, Soonchul Chang, Jaehoon Hwang
  • Mask assembly, method of manufacturing thereof, and apparatus including the same
    Patent number: 10533245
    Abstract: A mask assembly, and an apparatus including the same are provided. The mask assembly includes a mask sheet. The mask sheet includes a pattern portion having openings, and a welding portion connected to the pattern portion. The welding portion has a grain size different from a grain size of the pattern portion.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: January 14, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soonchul Chang, Seungyong Song, Sungsoon Im, Kyuhwan Hwang, Minho Moon, Youngmin Moon
  • Method of manufacturing a mask
    Patent number: 9999943
    Abstract: A method of manufacturing a mask includes forming a first hole in a base material using a laser, the first hole penetrating through the base material from a first surface to a second surface different than the first surface, and expanding the first hole using an etchant to form a second hole.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: June 19, 2018
    Assignee: Samsung Display Co., LTd.
    Inventors: Youngmin Moon, Sungsoon Im, Minho Moon, Soonchul Chang
  • Mask assembly and apparatus and method of manufacturing display apparatus using the same
    Patent number: 9837608
    Abstract: A mask assembly includes: a mask frame; and a mask sheet disposed on the mask frame, wherein the mask sheet is stretched by applying tensile force and affixed onto the mask frame, wherein the mask sheet includes a pattern including a plurality of openings, and wherein a thickness of the pattern is different from thicknesses of other portions of the mask sheet.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: December 5, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Youngmin Moon, Minho Moon, Sungsoon Im, Soonchul Chang, Kyuhwan Hwang
  • MASK ASSEMBLY, METHOD OF MANUFACTURING THEREOF, AND APPARATUS INCLUDING THE SAME
    Publication number: 20170198383
    Abstract: A mask assembly, a method of manufacturing thereof, and an apparatus including the same are provided. The mask assembly includes a mask sheet. The mask sheet includes a pattern portion having openings, and a welding portion connected to the pattern portion. The welding portion has a particle size different from a particle size of the pattern portion.
    Type: Application
    Filed: July 25, 2016
    Publication date: July 13, 2017
    Inventors: Soonchul CHANG, Seungyong SONG, Sungsoon IM, Kyuhwan HWANG, Minho MOON, Youngmin MOON
  • Deposition mask, method of manufacturing deposition mask, and method of manufacturing display apparatus
    Patent number: 9695522
    Abstract: A deposition mask including a mask body including a plurality of pattern holes; a plurality of protrusions protruding from the mask body; and a plurality of grooves formed in the mask body. A grain size of the mask body is in arrange of about 10 ?m to about 1000 ?m, and a difference between a maximum height of the plurality of protrusions and a maximum height of the plurality of grooves is equal to or less than 0.5 ?m.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: July 4, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sungsoon Im, Kyu H. Hwang, Jaesik Kim, Minho Moon, Youngmin Moon, Soonchul Chang, Taewook Kang
  • MASK ASSEMBLY AND APPARATUS AND METHOD OF MANUFACTURING DISPLAY APPARATUS USING THE SAME
    Publication number: 20170141314
    Abstract: A mask assembly includes: a mask frame; and a mask sheet disposed on the mask frame, wherein the mask sheet is stretched by applying tensile force and affixed onto the mask frame, wherein the mask sheet includes a pattern including a plurality of openings, and wherein a thickness of the pattern is different from thicknesses of other portions of the mask sheet.
    Type: Application
    Filed: June 7, 2016
    Publication date: May 18, 2017
    Inventors: Youngmin MOON, Minho MOON, Sungsoon IM, Soonchul CHANG, Kyuhwan HWANG
  • METHOD OF MANUFACTURING A MASK
    Publication number: 20170029957
    Abstract: A method of manufacturing a mask includes forming a first hole in a base material using a laser, the first hole penetrating through the base material from a first surface to a second surface different than the first surface, and expanding the first hole using an etchant to form a second hole.
    Type: Application
    Filed: April 6, 2016
    Publication date: February 2, 2017
    Inventors: Youngmin MOON, Sungsoon IM, Minho MOON, Soonchul CHANG
  • DEPOSITION MASK, METHOD OF MANUFACTURING DEPOSITION MASK, AND METHOD OF MANUFACTURING DISPLAY APPARATUS
    Publication number: 20160145762
    Abstract: A deposition mask including a mask body including a plurality of pattern holes; a plurality of protrusions protruding from the mask body; and a plurality of grooves formed in the mask body. A grain size of the mask body is in arrange of about 10 ?m to about 1000 ?m, and a difference between a maximum height of the plurality of protrusions and a maximum height of the plurality of grooves is equal to or less than 0.5 ?m.
    Type: Application
    Filed: November 20, 2015
    Publication date: May 26, 2016
    Inventors: Sungsoon IM, Kyu H. HWANG, Jaesik KIM, Minho MOON, Youngmin MOON, Soonchul CHANG, Taewook KANG