Patents by Inventor Kwan Hyun Cho

Kwan Hyun Cho 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: 20240104115
    Abstract: Disclosed herein are a method and apparatus for converting a credential data schema.
    Type: Application
    Filed: July 11, 2023
    Publication date: March 28, 2024
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seok-Hyun KIM, Soo-Hyung KIM, Young-Seob CHO, Geon-Woo KIM, Young-Sam KIM, Jong-Hyouk NOH, Kwan-Tae CHO, Sang-Rae CHO, Jin-Man CHO, Seung-Hun JIN
  • Publication number: 20240104990
    Abstract: Disclosed herein is a method for user-centered visitor access management, which may include issuing, by a management office server, a digital certificate to a householder terminal; registering, by a wall-pad, a householder in response to a request to register the householder based on the digital certificate; requesting, by the householder terminal, the management office server to register a visitor based on a visit request from a visitor terminal and delegating the digital certificate to the visitor terminal; making an entry request to a management terminal based on the digital certificate; verifying, by the wall-pad, the digital certificate based on a request for verification for entry from a wall-pad management terminal and providing a verification result to the wall-pad management terminal when the management terminal is the wall-pad management terminal; and managing and controlling, by the wall-pad, permission to use home devices based on delegated permission information of the digital certificate.
    Type: Application
    Filed: March 22, 2023
    Publication date: March 28, 2024
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seok-Hyun KIM, Young-Seob CHO, Soo-Hyung KIM, Geon-Woo KIM, Young-Sam KIM, Jong-Hyouk NOH, Kwan-Tae CHO, Sang-Rae CHO, Jin-Man CHO, Seung-Hun JIN
  • Patent number: 11104805
    Abstract: Highly saturated scarlet dye ink for a high-speed inkjet process and a method of preparing the highly saturated scarlet dye ink are disclosed. In particular, an ink composition according to the present invention includes a dye including a compound represented by Formula 1, and further includes, in addition to the dye, distilled water, a surfactant, and an additive. The ink composition develops a highly saturated scarlet color that is unable to be developed by existing inks for digital textile printing (DTP), and has high water solubility, excellent heat resistance, and light-fastness, and thus may be effectively used as dye and ink for a high-speed inkjet process.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: August 31, 2021
    Assignee: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
    Inventors: Jun Choi, Sol Choi, Kwan Hyun Cho, Eui Sang Yoo
  • Publication number: 20210038494
    Abstract: The disclosed technology relates to a phase stable personal care cleansing composition containing high amounts of a non-polar oil. The compositions are high foaming and provide conditioning benefits to the scalp and skin. The composition comprises: a) water; b) a crosslinked nonionic amphiphilic polymer; c) a non-polar oil phase; d) at least one fatty acid soap; and e) an optional detersive surfactant other than d).
    Type: Application
    Filed: March 11, 2019
    Publication date: February 11, 2021
    Inventors: Xianghua Qu, Kwan Hyun Cho, Brian D. Figura, Yan Zhang
  • Patent number: 10831060
    Abstract: A display device and a method of manufacturing the same. The display device includes: a substrate; and a reflection member that is disposed on a surface of the substrate and has a first thickness in a first reflection region corresponding to a light-emitting region and a second thickness in a second reflection region corresponding to a non-light-emitting region.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: November 10, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Hoon Yim, Seong-Min Kim, Kyung-Ho Kim, Kwan-Hyun Cho, Young-Woo Song
  • Publication number: 20200109288
    Abstract: Highly saturated scarlet dye ink for a high-speed inkjet process and a method of preparing the highly saturated scarlet dye ink are disclosed. In particular, an ink composition according to the present invention includes a dye including a compound represented by Formula 1, and further includes, in addition to the dye, distilled water, a surfactant, and an additive. The ink composition develops a highly saturated scarlet color that is unable to be developed by existing inks for digital textile printing (DTP), and has high water solubility, excellent heat resistance, and light-fastness, and thus may be effectively used as dye and ink for a high-speed inkjet process.
    Type: Application
    Filed: April 26, 2019
    Publication date: April 9, 2020
    Inventors: Jun CHOI, Sol CHOI, Kwan Hyun CHO, Eui Sang YOO
  • Patent number: 9905802
    Abstract: An organic light emitting display apparatus and a method of manufacturing the same are provided. The apparatus includes a substrate, a first electrode formed on the substrate, an intermediate layer formed on the first electrode. The intermediate layer includes an organic emission layer. A second electrode is formed on the intermediate layer, and a capping layer is formed on the second electrode in a first region. The capping layer includes a first edge portion and at least two layers. A third electrode is formed on the second electrode in a second region. The second region is not overlapped with the first region, and the third electrode includes a second edge portion having a side portion facing a side portion of the first edge portion of the capping layer. Electric properties and image quality may be improved.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: February 27, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun-Ho Choi, Kwan-Hyun Cho, Jin-Koo Chung
  • Patent number: 9793331
    Abstract: An organic light emitting display apparatus includes a substrate, an encapsulation member facing the substrate, a plurality of pixels between the substrate and the encapsulation member, each pixel including a light emission area and a non-emission area, a first electrode overlapping at least the light emission area, an intermediate layer on the first electrode and including an organic emission layer, a second electrode on the intermediate layer, and a reflective member on a bottom surface of the encapsulation member, the bottom surface of the encapsulation member facing the substrate, and the reflective member including an opening corresponding to the light emission area, and a reflective surface around the opening and corresponding to the non-emission area.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: October 17, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang-Hoon Yim, Seong-Min Kim, Kwan-Hyun Cho, Kyung-Ho Kim, Jun-Ho Choi, Jin-Koo Chung, Young-Woo Song
  • Publication number: 20170097545
    Abstract: A display device and a method of manufacturing the same. The display device includes: a substrate; and a reflection member that is disposed on a surface of the substrate and has a first thickness in a first reflection region corresponding to a light-emitting region and a second thickness in a second reflection region corresponding to a non-light-emitting region.
    Type: Application
    Filed: December 19, 2016
    Publication date: April 6, 2017
    Inventors: Sang-Hoon YIM, Seong-Min KIM, Kyung-Ho KIM, Kwan-Hyun CHO, Young-Woo SONG
  • Patent number: 9557599
    Abstract: A display device and a method of manufacturing the same. The display device includes: a substrate; and a reflection member that is disposed on a surface of the substrate and has a first thickness in a first reflection region corresponding to a light-emitting region and a second thickness in a second reflection region corresponding to a non-light-emitting region.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: January 31, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Hoon Yim, Seong-Min Kim, Kyung-Ho Kim, Kwan-Hyun Cho, Young-Woo Song
  • Publication number: 20170005157
    Abstract: An organic light emitting display apparatus includes a substrate, an encapsulation member facing the substrate, a plurality of pixels between the substrate and the encapsulation member, each pixel including a light emission area and a non-emission area, a first electrode overlapping at least the light emission area, an intermediate layer on the first electrode and including an organic emission layer, a second electrode on the intermediate layer, and a reflective member on a bottom surface of the encapsulation member, the bottom surface of the encapsulation member facing the substrate, and the reflective member including an opening corresponding to the light emission area, and a reflective surface around the opening and corresponding to the non-emission area.
    Type: Application
    Filed: September 15, 2016
    Publication date: January 5, 2017
    Inventors: Sang-Hoon YIM, Seong-Min KIM, Kwan-Hyun CHO, Kyung-Ho KIM, Jun-Ho CHOI, Jin-Koo CHUNG, Young-Woo SONG
  • Patent number: 9502692
    Abstract: An organic light-emitting diode (OLED) display is disclosed. In one aspect, the OLED display includes a plurality of pixels and each pixel includes a first area configured to emit light and a second area configured to transmit external light therethrough. Each pixel also includes a first electrode formed in the first area and an organic layer formed in the first area and the second area, wherein the organic layer covers the first electrode. Each pixel further includes a second electrode covering at least the organic layer formed in the first area and having a first opening exposing at least a portion of the organic layer formed in the second area. A reflection prevention layer is formed substantially covering the organic layer formed in the second area. The reflection prevention layer has a refractive index lower than that of the organic layer.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: November 22, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kwan-Hyun Cho, Jin-Koo Chung, Jun-Ho Choi
  • Patent number: 9450201
    Abstract: An organic light emitting display apparatus includes a substrate, an encapsulation member facing the substrate, a plurality of pixels between the substrate and the encapsulation member, each pixel including a light emission area and a non-emission area, a first electrode overlapping at least the light emission area, an intermediate layer on the first electrode and including an organic emission layer, a second electrode on the intermediate layer, and a reflective member on a bottom surface of the encapsulation member, the bottom surface of the encapsulation member facing the substrate, and the reflective member including an opening corresponding to the light emission area, and a reflective surface around the opening and corresponding to the non-emission area.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: September 20, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang-Hoon Yim, Seong-Min Kim, Kwan-Hyun Cho, Kyung-Ho Kim, Jun-Ho Choi, Jin-Koo Chung, Young-Woo Song
  • Patent number: 9406899
    Abstract: An organic light-emitting display apparatus includes: a substrate; pixels defined on the substrate, where each pixel includes a first region including a light-emitting region and a second region including a transmission region; a third region defined on the substrate disposed between the pixels; first electrodes disposed in the pixels on the substrate, respectively, where each first electrode is disposed in the first region of a corresponding pixel; an organic emission layer disposed to cover the first electrodes; a first auxiliary layer disposed on the organic emission layer in the second region and which exposes the first region; a second electrode disposed on the organic emission layer in the first region; a second auxiliary layer disposed in the first and second regions and which exposes the third region; and a third electrode disposed in the third region and in contact with the second electrode.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: August 2, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jin-Koo Chung, Jun-Ho Choi, Kwan-Hyun Cho
  • Publication number: 20160218321
    Abstract: An organic light emitting display apparatus and a method of manufacturing the same are provided. The apparatus includes a substrate, a first electrode formed on the substrate, an intermediate layer formed on the first electrode. The intermediate layer includes an organic emission layer. A second electrode is formed on the intermediate layer, and a capping layer is formed on the second electrode in a first region. The capping layer includes a first edge portion and at least two layers. A third electrode is formed on the second electrode in a second region. The second region is not overlapped with the first region, and the third electrode includes a second edge portion having a side portion facing a side portion of the first edge portion of the capping layer. Electric properties and image quality may be improved.
    Type: Application
    Filed: April 4, 2016
    Publication date: July 28, 2016
    Inventors: Jun-Ho Choi, Kwan-Hyun Cho, Jin-Koo Chung
  • Patent number: 9331308
    Abstract: An organic light emitting display apparatus and a method of manufacturing the same are provided. The apparatus includes a substrate, a first electrode formed on the substrate, an intermediate layer formed on the first electrode. The intermediate layer includes an organic emission layer. A second electrode is formed on the intermediate layer, and a capping layer is formed on the second electrode in a first region. The capping layer includes a first edge portion and at least two layers. A third electrode is formed on the second electrode in a second region. The second region is not overlapped with the first region, and the third electrode includes a second edge portion having a side portion facing a side portion of the first edge portion of the capping layer. Electric properties and image quality may be improved.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: May 3, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun-Ho Choi, Kwan-Hyun Cho, Jin-Koo Chung
  • Patent number: 9324771
    Abstract: An organic light-emitting display apparatus includes a first substrate including a display unit having a light-emitting region and a non-light-emitting region, a second substrate parallel to the first substrate, and a reflective member on a surface of the second substrate that faces the first substrate, the reflective member corresponding to the non-light-emitting region of the display unit and being configured to sense touch, and the reflective member including a plurality of first pattern parts electrically connected along a first direction and a plurality of second pattern parts electrically connected along a second direction.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: April 26, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang-Hoon Yim, Kyung-Ho Kim, Young-Woo Song, Jong-Hyuk Lee, Kwan-Hyun Cho
  • Publication number: 20160099438
    Abstract: An organic light-emitting diode (OLED) display is disclosed. In one aspect, the OLED display includes a plurality of pixels and each pixel includes a first area configured to emit light and a second area configured to transmit external light therethrough. Each pixel also includes a first electrode formed in the first area and an organic layer formed in the first area and the second area, wherein the organic layer covers the first electrode. Each pixel further includes a second electrode covering at least the organic layer formed in the first area and having a first opening exposing at least a portion of the organic layer formed in the second area. A reflection prevention layer is formed substantially covering the organic layer formed in the second area. The reflection prevention layer has a refractive index lower than that of the organic layer.
    Type: Application
    Filed: December 10, 2015
    Publication date: April 7, 2016
    Inventors: Kwan-Hyun CHO, Jin-Koo CHUNG, Jun-Ho CHOI
  • Patent number: 9293515
    Abstract: An organic light-emitting display device and a method of manufacturing the organic light-emitting display device. The organic light-emitting display device is a dual emission display capable of displaying differing images on either side of the display, and includes a facing electrode that is selectively deposited in the first area but not in the second area, the selectivity being brought about by a varying an underlying material having differing adhesive forces with the material of the facing electrode. In addition, the underlying materials of the facing electrode and other intermediate layers of the organic light emitting diode device provide extra distance between the organic light emitting layer and a reflective electrode, so that exciton quenching is reduced, resulting in improved light emitting efficiency.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: March 22, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun-Ho Choi, Jin-Koo Chung, Kwan-Hyun Cho
  • Patent number: 9257667
    Abstract: An organic light-emitting display apparatus includes a substrate including a display area and a peripheral area surrounding the display area, a plurality of pixels being disposed in the display area, a plurality of first electrodes in the display area, a plurality of stripe-shaped second electrodes in the display area, the second electrodes extending in a first direction and being spaced apart from each other in a second direction crossing the first direction, and each of the plurality of the second electrodes having an uneven thickness along a third direction inside the display area, an intermediate layer between corresponding first and second electrodes, the intermediate layer having a light-emitting layer, and a connection wiring in the peripheral area, the connection wiring electrically connecting the plurality of the second electrodes with each other.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: February 9, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kwan-Hyun Cho, Jin-Koo Chung, Jun-Ho Choi