Patents by Inventor An Na Choi

An Na 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: 11383268
    Abstract: Provided is a surface-treated metallic material with easy control of glossiness and a manufacturing method therefor, the surface-treated metallic material comprising: a metallic material; and a coating layer which is formed on at least one side of the metallic material and on which an ultraviolet curable coating composition is cured, wherein the coating layer consists of a plurality of protrusions, which have a volume of 3 to 16 pico liters and are arranged at a density of 5 to 610 per 1 mm2 of the metallic material. As such, the surface-treated steel sheet is excellent in adhesion, scratch resistance and corrosion resistance, and has easy control of glossiness.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: July 12, 2022
    Assignee: POSCO
    Inventors: Jung-Hwan Lee, Ha-Na Choi, Jin-Tae Kim, Yon-Kyun Song, Bong-Woo Ha
  • Publication number: 20220213127
    Abstract: An emitting compound of following and an organic light emitting device includes the flowing emitting compound.
    Type: Application
    Filed: July 29, 2021
    Publication date: July 7, 2022
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Su-Na CHOI, In-Bum SONG, Jeong-Dae SEO
  • Publication number: 20220216410
    Abstract: The present disclosure relates to an organic light emitting device. In particular, the present disclosure relates to an organic light emitting diode and an organic light emitting device each of which includes at least one emitting material layer comprising a boron-based dopant and an anthracene-based host substituted with at least one deuterium, at least one electron blocking layer including an amine-based compound substituted with at least one spiro aryl group, and optionally at least one hole blocking layer including an azine-based or a benzimidazole-based compound. The organic light emitting diode and the organic light emitting device has improved luminous efficiency and enhanced luminous lifespan.
    Type: Application
    Filed: November 11, 2021
    Publication date: July 7, 2022
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Su-Na CHOI, In-Bum SONG, Jeong-Dae SEO
  • Publication number: 20220216409
    Abstract: The present disclosure relates to an organic light emitting device that includes a substrate, and an organic light emitting diode positioned on the substrate and including a first electrode, a second electrode facing the first electrode, a first emitting material layer including a first dopant of a boron derivative and a first host of an anthracene derivative and positioned between the first and second electrodes, a first electron blocking layer including an electron blocking material and positioned between the first electrode and the first emitting material layer, and a first hole blocking layer including a hole blocking material and positioned between the second electrode and the first emitting material layer, wherein the first host is deuterated.
    Type: Application
    Filed: November 5, 2021
    Publication date: July 7, 2022
    Inventors: Su-Na Choi, In-Bum Song, Jeong-Dae Seo
  • Publication number: 20220216408
    Abstract: The present disclosure relates to an organic light emitting device that includes a substrate, and an organic light emitting diode positioned on the substrate and including a first electrode, a second electrode facing the first electrode, and a first emitting material layer including a first dopant of a boron derivative and a first host of an anthracene derivative and positioned between the first and second electrodes, wherein the first host is deuterated.
    Type: Application
    Filed: November 4, 2021
    Publication date: July 7, 2022
    Inventors: Su-Na Choi, In-Bum Song, Jeong-Dae Seo
  • Publication number: 20220216407
    Abstract: The present disclosure relates to an organic light emitting device that includes a substrate, and an organic light emitting diode positioned on the substrate and including a first electrode, a second electrode facing the first electrode, and a first emitting material layer including a first dopant of a boron derivative and a first host of an anthracene derivative and positioned between the first and second electrodes, wherein the first host is deuterated.
    Type: Application
    Filed: November 3, 2021
    Publication date: July 7, 2022
    Inventors: Su-Na Choi, In-Bum Song, Jeong-Dae Seo
  • Publication number: 20220209119
    Abstract: The present disclosure relates to an organic light emitting device. In particular, the present disclosure relates to an organic light emitting diode and an organic light emitting device each of which includes at least one emitting material layer including a boron-based dopant and an anthracene-based host substituted with at least one deuterium, at least one electron blocking layer including an amine-based compound substituted with at least one polycyclic aryl, and optionally at least one hole blocking layer including an azine-based or a benzimidazole-based compound. The organic light emitting diode and the organic light emitting device has improved luminous efficiency and enhanced luminous lifespan.
    Type: Application
    Filed: November 10, 2021
    Publication date: June 30, 2022
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Su-Na Choi, In-Bum Song, Jeong-Dae Seo
  • Publication number: 20220209118
    Abstract: The present disclosure relates to a luminescent compound having the following structure of Formula 1, an organic light emitting diode (OLED) and an organic light emitting device that includes the luminescent compound. The OLED and the organic light emitting device including the luminescent compound can improve their luminous efficiency and luminous lifespan.
    Type: Application
    Filed: September 9, 2021
    Publication date: June 30, 2022
    Applicant: LG Display Co., Ltd.
    Inventors: Su-Na Choi, In-Bum Song, Jeong-Dae Seo
  • Publication number: 20220209122
    Abstract: The present disclosure relates to an organic light emitting device that includes a substrate; and an organic light emitting diode positioned on the substrate and including a first electrode; a second electrode facing the first electrode; a first emitting material layer including a first dopant of a boron derivative and a first host of an anthracene derivative and positioned between the first and second electrodes; a first electron blocking layer including an electron blocking material and positioned between the first electrode and the first emitting material layer; and a first hole blocking layer including a hole blocking material and positioned between the second electrode and the first emitting material layer, wherein the first host is deuterated.
    Type: Application
    Filed: November 29, 2021
    Publication date: June 30, 2022
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Su-Na CHOI, In-Bum SONG, Jeong-Dae SEO
  • Publication number: 20220209130
    Abstract: The present disclosure relates to a luminescent compound, and an organic light emitting diode and organic light emitting device having the compound, more specifically, relates to a luminescent compound having the following structure of Formula 1, an organic light emitting diode (OLED) and an organic light emitting device that includes the luminescent compound. The OLED and the organic light emitting device including the luminescent compound can improve their luminous efficiency and luminous lifespan.
    Type: Application
    Filed: August 4, 2021
    Publication date: June 30, 2022
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Su-Na CHOI, In-Bum SONG, Jeong-Dae SEO
  • Publication number: 20220209120
    Abstract: The present disclosure relates to an organic light emitting device that includes a substrate; and an organic light emitting diode positioned on the substrate and including a first electrode; a second electrode facing the first electrode; a first emitting material layer including a first dopant of a boron derivative and a first host of an anthracene derivative and positioned between the first and second electrodes; a first electron blocking layer including an electron blocking material of amine derivative and positioned between the first electrode and the first emitting material layer; and a first hole blocking layer including a hole blocking material and positioned between the second electrode and the first emitting material layer, wherein the first host is deuterated.
    Type: Application
    Filed: November 10, 2021
    Publication date: June 30, 2022
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Su-Na CHOI, In-Bum SONG, Jeong-Dae SEO
  • Publication number: 20220204532
    Abstract: The present disclosure relates to an emitting compound and organic light emitting device including the same, and more specifically, relates to an emitting compound of following and an organic light emitting diode and an organic light emitting device each including the emitting compound.
    Type: Application
    Filed: July 13, 2021
    Publication date: June 30, 2022
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Su-Na CHOI, In-Bum SONG, Jeong-Dae SEO
  • Publication number: 20220209123
    Abstract: The present disclosure relates to an emitting compound and organic light emitting device including the same, more specifically, relates to an emitting compound of following and an organic light emitting diode and an organic light emitting device each including the emitting compound.
    Type: Application
    Filed: December 2, 2021
    Publication date: June 30, 2022
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Su-Na CHOI, In-Bum SONG, Jeong-Dae SEO
  • Patent number: 11367685
    Abstract: An electronic device including a semiconductor memory is provided. The semiconductor memory includes: a plurality of lower lines disposed over a substrate and extending in a first direction; a plurality of upper lines disposed over the lower lines and extending in a second direction crossing the first direction; a plurality of memory cells disposed between the lower lines and the upper lines and overlapping intersection regions of the lower lines and the upper lines; and an air gap located between the upper lines and extending in the second direction.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: June 21, 2022
    Assignee: SK hynix Inc.
    Inventors: Seong-Hyun Kim, Jung-Won Seo, An-Na Choi
  • Publication number: 20210370857
    Abstract: Disclosed are a vehicle back beam capable of maximizing impact performance and reducing product weight; and a vehicle including same. According to one embodiment of the present invention, provided is a vehicle back beam which includes: a back beam body; and a back beam reinforcing part which is formed in at least one section of the back beam body and composed of a highly deformable composite material.
    Type: Application
    Filed: March 29, 2018
    Publication date: December 2, 2021
    Inventors: Ae-Ri OH, Jong-Sung PARK, Hee-June KIM, Han-Na CHOI
  • Publication number: 20210341950
    Abstract: An identification method and an unmanned aerial vehicle (UAV) detection apparatus are provided. The identification method, as a method for preventing a collision that may occur in a process of detecting and identifying a plurality of UAVs flying in the air, detects a plurality of UAVs in the air and determines a legitimacy of flight of each of the plurality of UAVs using an identification information request message.
    Type: Application
    Filed: April 28, 2021
    Publication date: November 4, 2021
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jinhyung OH, kyu-Min KANG, Jae Cheol PARK, DONG WOO LIM, Su Na CHOI, Sunghyun HWANG
  • Patent number: 11161322
    Abstract: Provided is a reinforced composite material, comprising: a laminate of a plurality of fiber reinforced sheets; and a surface material on at least one surface of the laminate. Each of the fiber reinforced sheets comprises: a fiber reinforcing material having orientation; and a resin base material. The plurality of fiber reinforced sheets comprise: at least one first fiber reinforced sheet including a fiber reinforcing material having directionality in a first direction having an angle of +1° to +44° with respect to a reinforcement required direction; and at least one second fiber reinforced sheet including a fiber reinforcing material having directionality in a second direction having an angle of ?1° to ?44° with respect to the reinforcement required direction. The surface material comprises a metal sheet having a mesh structure. Also provided is an article including the reinforced composite material.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: November 2, 2021
    Assignee: LG HAUSYS, LTD.
    Inventors: Ae-Ri Oh, Han-Na Choi, Jong-Sung Park, Hee-June Kim
  • Patent number: 11134444
    Abstract: Disclosed are a low-power communication method and a low-power communication apparatus in a communication system. A low-power station may comprise a processor; a memory storing at least one instruction executable by the processor; a receiver for receiving a WUR PPDU according to the at least one instruction; and a transceiver for transmitting and receiving a legacy PPDU according to the at least one instruction, and the at least one instruction may be configured to cause the receiver to receive a WUR wake-up frame from the access point in an on-duration within a WUR duty cycle period; when the WUR wake-up frame is received, cause the processor to transmit a first signal requesting wake-up to the transceiver; and when the first signal is received, cause the transceiver to transition from a sleep state to a wake-up state at a TWT configured between the access point and the low-power station.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: September 28, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sung Hyun Hwang, Kyu Min Kang, Sung Jin Yoo, Su Na Choi, Jae Cheol Park, Yong Ho Kim
  • Patent number: 10999486
    Abstract: To solve the above problem, a monitoring apparatus according to an embodiment of the present invention comprises: a communication unit for receiving an original image acquired by a camera; a storage unit for storing the original image; a screen unit for displaying the original image and a corrected image obtained by dewarping the original image; and a control unit for controlling operations of the communication unit, the storage unit, and the screen unit, wherein the screen unit displays an icon in a dewarping area of the original image where the corrected image is obtained by dewarping the original image, indicates that the dewarping area is selected when the icon located in the dewarping area is selected, and displays a polygon representing the selected dewarping area.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: May 4, 2021
    Assignee: HANWHA TECHWIN CO., LTD.
    Inventors: Kyoung Jeon Jeong, Yoo Mi Cha, Sung Pil Chun, Dong Won Kim, Chang Hee Song, Mi Na Choi
  • Publication number: 20210119147
    Abstract: The present disclosure relates to an organic compound having the following structure, and an organic light emitting diode (OLED) and an organic light emitting device including the organic compound. The organic compound is a bipolar compound having a p-type moiety and an n-type moiety and has high energy level and proper energy bandgap for an emissive layer of the OLED. As the organic compound is applied into the emissive layer, the OLED can maximize its luminous properties as holes and electrons are recombined uniformly over the whole area in an EML.
    Type: Application
    Filed: October 12, 2020
    Publication date: April 22, 2021
    Applicants: LG Display Co., Ltd., Korea University Research and Business Foundation
    Inventors: Dae-Wi YOON, Suk-Young BAE, In-Ae SHIN, Su-Na CHOI, Dong-Hoon CHOI, Min-Ju CHO, Jiwon YOON