Patents by Inventor Hyunju Choi

Hyunju 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: 11937764
    Abstract: Provided is a cleaning device including a vacuum cleaner including a dust collector into which dirt and dust is collected, a docking station connected to the dust collector and having a long axis extending in a first direction, and the docking station includes a docking part coupled to the dust collector to remove dirt and dust collected in the dust collector, a sucking device sucking up the dirt and dust and inside air in the dust collector docked with the docking part through the docking part, and a circulation duct arranged for the air sucked up by the sucking device to be circulated to the docking part.
    Type: Grant
    Filed: July 29, 2021
    Date of Patent: March 26, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seehyun Kim, Youngchul Ko, Higon Koo, Kisup Lee, Hyunho Lee, Seungryong Cha, Seungwoo Choi, Kihwan Kwon, Hyeoncheol Kim, Hwagyu Song, Sungcheol Lee, Hyunju Lee, Ingyu Choi
  • Publication number: 20240081592
    Abstract: A cleaning apparatus includes a cleaner including a dust container in which contaminants are collected and a dust container cover rotatably coupled to the dust container to open or close the dust container, and a docking station on which the cleaner is detachably mounted, the docking station including a collecting portion to collect the contaminants in the dust container in response to the mounting and a duct portion forming a channel to guide the contaminants in the dust container to the collecting portion in response to the mounting; a cover opening device configured to open the dust container cover, and a cover closing device configured to close the dust container cover, the cover closing device including a rotary lever configured to be movable between a first position forming a portion of the channel of the duct portion and a second position supporting the dust container cover in a closing direction.
    Type: Application
    Filed: November 14, 2023
    Publication date: March 14, 2024
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seehyun KIM, Hyeoncheol KIM, Hyunju LEE, Kihwan KWON, Hyunho LEE, Seungryong CHA, Ingyu CHOI
  • Publication number: 20240090330
    Abstract: The present disclosure provides a novel compound represented by the following Chemical Formula 1, and an organic light emitting device including the same: wherein A1 to A4, X, Y and n are described herein.
    Type: Application
    Filed: March 8, 2022
    Publication date: March 14, 2024
    Applicants: LG Chem, Ltd., LG Chem, Ltd.
    Inventors: Byeong Yun Lim, Jaechol Lee, Yongwook Kim, Soyoung Yu, Shin Sung Kim, Young Kwang Kim, Hyunju Choi
  • Publication number: 20230406867
    Abstract: The present disclosure provides a novel compound represented by the following Chemical Formula 1, and an organic light emitting device including the same: wherein Ar1 to Ar4 and R1 are described herein.
    Type: Application
    Filed: December 3, 2021
    Publication date: December 21, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Yongwook Kim, Jaechol Lee, Soyoung Yu, Shin Sung Kim, Young Kwang Kim, Byeong Yun Lim, Hyunju Choi
  • Publication number: 20230115435
    Abstract: The present disclosure provides a novel compound of Chemical Formula 1 and an organic light emitting device including the same, X1, X2, A4, A5, Ar1, Ar2, and R1 to R4 are described herein.
    Type: Application
    Filed: July 19, 2021
    Publication date: April 13, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Shin Sung Kim, Jaechol Lee, Yongwook Kim, Young Kwang Kim, Byeong Yun Lim, Beomshin Cho, Hyunju Choi
  • Publication number: 20230043088
    Abstract: The present disclosure provides an organic light emitting device comprising a hole injection layer including a cured product of a compound represented by the following Chemical Formula 1, and a hole transport layer including a polymer containing a repeating unit represented by the following Chemical Formula 2: wherein all the variables a10-re described herein.
    Type: Application
    Filed: August 21, 2020
    Publication date: February 9, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Esder Kang, Yeonhui Yi, Sejin Jung, Beomgoo Kang, Min Suk Jung, Jaesoon Bae, Jaechol Lee, Yebyeol Kim, Hyunju Choi
  • Publication number: 20220389127
    Abstract: The present specification relates to a polymer comprising a unit represented by Chemical Formula 1, a monomer represented by Chemical Formula 2, a coating composition comprising the same, an organic light emitting device formed using the same, and a method for manufacturing an organic light emitting device using the same: wherein the variables are described herein.
    Type: Application
    Filed: September 18, 2020
    Publication date: December 8, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Min Suk Jung, Jaesoon Bae, Youngju Park, Esder Kang, Byeong Yun Lim, Dowon Lim, Jaechol Lee, Hyunju Choi
  • Patent number: 10903442
    Abstract: Disclosed are an organic light-emitting diode and an organic light-emitting display device including the same. The organic light-emitting diode includes: a first electrode; a second electrode disposed opposite to the first electrode; a light-emitting layer disposed between the first electrode and the second electrode; a hole transport region disposed between the first electrode and the light-emitting layer; and an electron transport region disposed between the light-emitting layer and the second electrode; the hole transport region including at least two layers, and one of the at least two layers is in contact with the first electrode and is a self-crystallizing material-containing layer.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: January 26, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Changmin Lee, Jihye Shim, Yeonwoo Lee, Jehong Choi, Hyunju Choi, Sangwoo Pyo, Myungsuk Han
  • Publication number: 20190148663
    Abstract: Disclosed are an organic light-emitting diode and an organic light-emitting display device including the same. The organic light-emitting diode includes: a first electrode; a second electrode disposed opposite to the first electrode; a light-emitting layer disposed between the first electrode and the second electrode; a hole transport region disposed between the first electrode and the light-emitting layer; and an electron transport region disposed between the light-emitting layer and the second electrode; the hole transport region including at least two layers, and one of the at least two layers is in contact with the first electrode and is a self-crystallizing material-containing layer.
    Type: Application
    Filed: July 19, 2018
    Publication date: May 16, 2019
    Inventors: Changmin LEE, Jihye SHIM, Yeonwoo LEE, Jehong CHOI, Hyunju CHOI, Sangwoo PYO, Myungsuk HAN
  • Publication number: 20190148648
    Abstract: Disclosed are an organic light-emitting diode and an organic light-emititng display device including the same. The organic light-emitting diode includes: a first electrode; a second electrode disposed opposite to the first electrode; and an organic layer interposed between the first electrode and the second layer and including a hole transport region, a light-emitting layer, an electron transport region, and a diffusion barrier layer, wherein the diffusion barrier layer includes one or more diffusion barrier materials including a 6- to 20-membered N-heterocyclic aromatic compound, a lithium complex, and/or a phosphine oxide-based compound.
    Type: Application
    Filed: July 23, 2018
    Publication date: May 16, 2019
    Inventors: Changmin LEE, Jihye SHIM, Yeonwoo LEE, Jehong CHOI, Hyunju CHOI, Sangwoo PYO, Myungsuk HAN
  • Patent number: 9711746
    Abstract: An organic light emitting diode display includes: a substrate; and a plurality of red organic light emitting diodes, green organic light emitting diodes, and blue organic light emitting diodes on the substrate, each of the plurality of red organic light emitting diodes, green organic light emitting diodes, and blue organic light emitting diodes including: a first electrode on the substrate; an organic layer on the first electrode; and a second electrode on the organic layer, and the organic layer includes a light emission auxiliary layer on the first electrode and an organic light emitting layer on the light emission auxiliary layer, and the organic layer of each of the red organic light emitting diodes has a thickness of about 90 to 110 nm.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: July 18, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Changmin Lee, Hyunju Choi, Jihwan Yoon
  • Publication number: 20160133674
    Abstract: An organic light emitting diode display includes: a substrate; and a plurality of red organic light emitting diodes, green organic light emitting diodes, and blue organic light emitting diodes on the substrate, each of the plurality of red organic light emitting diodes, green organic light emitting diodes, and blue organic light emitting diodes including: a first electrode on the substrate; an organic layer on the first electrode; and a second electrode on the organic layer, and the organic layer includes a light emission auxiliary layer on the first electrode and an organic light emitting layer on the light emission auxiliary layer, and the organic layer of each of the red organic light emitting diodes has a thickness of about 90 to 110 nm.
    Type: Application
    Filed: April 21, 2015
    Publication date: May 12, 2016
    Inventors: Changmin Lee, Hyunju Choi, Jihwan Yoon
  • Patent number: 7652424
    Abstract: An organic light emitting device is disclosed. The organic light emitting device includes a first substrate, a display unit that is positioned on the first substrate and includes a plurality of subpixels, a second substrate facing the first substrate, a seal member attaching the first substrate to the second substrate, and at least one projection. The seal member substantially has a water vapor permeation rate of 100 g/m2 day to 103 g/m2 day. The projection is positioned at a location corresponding to a bezel area of at least one of the first and second substrates.
    Type: Grant
    Filed: January 16, 2008
    Date of Patent: January 26, 2010
    Assignee: LG Electronics Inc.
    Inventors: Sangtae Park, Myungseop Kim, Jeongdae Seo, Wonjae Yang, Hyunju Choi, Younghoon Shin, Changho Hyeon, Jongmoo Lee
  • Publication number: 20090001877
    Abstract: An organic light emitting device is disclosed. The organic light emitting device includes a first substrate, a display unit that is positioned on the first substrate and includes a plurality of subpixels, a second substrate facing the first substrate, a seal member attaching the first substrate to the second substrate, and at least one projection. The seal member substantially has a water vapor permeation rate of 100 g/m2day to 103 g/m2day. The projection is positioned at a location corresponding to a bezel area of at least one of the first and second substrates.
    Type: Application
    Filed: January 16, 2008
    Publication date: January 1, 2009
    Inventors: Sangtae PARK, Myungseop Kim, Jeongdae Seo, Wonjae Yang, Hyunju Choi, Younghoon Shin, Changho Hyeon, Jongmoo Lee