Patents by Inventor Keun Yoo

Keun Yoo 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: 20220416176
    Abstract: The present disclosure relates to an organic compound of Formula, and an organic light emitting diode and an organic light emitting display device including the organic compound. In Formula, X is oxygen (O) or sulfur (S), and each of R1 to R4 is independently selected from the group consisting of deuterium, halogen, cyano, C1 to C10 alkyl group, C1 to C10 alkoxy group, C3 to C30 cycloalkyl group, C6 to C30 aryl group, C6 to C30 arylamino group, and C5 to C30 heteroaryl group, wherein each of L1 and L2 is independently selected from the group consisting of C6 to C30 arylene group and C5 to C30 heteroarylene group, and wherein each of a and b is independently 0 or 1, each of c and f is independently an integer of 0 to 3, and each of d and e is independently an integer of 0 to 2.
    Type: Application
    Filed: August 2, 2021
    Publication date: December 29, 2022
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Dae Wi YOON, Seon Keun YOO, Seong Su JEON
  • Publication number: 20220399545
    Abstract: Provided is a negative electrode active material for a lithium secondary battery including: a silicon oxide (SiOx, 0<x?2) composite including an alkali metal or alkaline earth metal-containing phosphate; and an aluminum-containing phosphate.
    Type: Application
    Filed: June 14, 2022
    Publication date: December 15, 2022
    Inventors: Joon Hyung Moon, Eun Jun Park, Ju Ho Chung, Gwi Ok Park, Seok Keun Yoo
  • Publication number: 20220397547
    Abstract: In a floating gate semiconductor nanostructure biosensor and a method for manufacturing the biosensor, the nanostructure biosensor includes a substrate, an insulating layer, a nanostructure, a source electrode and a drain electrode, a floating gate and a biological sensing material. The insulating layer is formed on the substrate. The nanostructure is protruded from the insulating layer. The source electrode and the drain electrode are formed on the insulating layer and dispose the nanostructure therebetween. The floating gate has a metal pattern or a polysilicon pattern, and extends with contacting the nanostructure. The biological sensing material has a first end combined with an immobile molecule on the floating gate, and a second end combined with a bio molecule.
    Type: Application
    Filed: August 22, 2022
    Publication date: December 15, 2022
    Applicant: OSONG MEDICAL INNOVATION FOUNDATION
    Inventors: Sung-Keun YOO, Seung-Wan SEO, Jeong-A KIM, Dong-Jun MOON
  • Patent number: 11524947
    Abstract: An organic compound having a tetraphenyl moiety and at least one fused hetero aryl moiety having at least one oxygen and/or sulfur on a ring and bonded to the tetraphenyl moiety directly or indirectly, and a light emitting diode and a light emitting device having the organic compound are disclosed. The organic compound has excellent thermal resistance property and hole mobility property. The organic compound can be incorporated into a hole transfer layer, an electron blocking layer and/or a charge generation layer of the light emitting diode. Therefore, the light emitting diode and light emitting device according to the present invention have decreased driving voltage and enhanced luminous efficiency.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: December 13, 2022
    Assignee: LG DISPLAY CO., LTD.
    Inventors: So-Young Jang, Hee-Jun Park, Jeong-Dae Seo, Seon-Keun Yoo, Ji-Cheol Shin, Sang-Beom Kim
  • Patent number: 11493966
    Abstract: An electronic device according to various embodiments of the present invention comprises: a housing including a front surface and a rear surface facing the direction opposite to the front surface; a support plate rotatably coupled to the rear surface of the housing, and rotating around a first axis from a position in which the support plate is in close contact with a partial area of the rear surface to an open state in which the support plate forms an angle with respect to the rear surface; and a hinge structure having at least a portion accommodated inside the housing, and rotatably coupling the support plate to the housing. Therein, the hinge structure can comprise: a first guide member mounted on and fixed to the inner side surface of the housing; a second guide member mounted on and fixed to one surface of the support plate; and a gear module for linking the first guide member and the second guide member, wherein the first axis can be positioned on the rear surface on the outside of the housing.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: November 8, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Yoon Kim, Chung-Keun Yoo, Yong-Hwa Han
  • Patent number: 11469378
    Abstract: The present invention provides an electroluminescent compound of one of following formulas Formula 1 and Formula 2. Another aspect of the invention is an electroluminescent device including a first electrode; a second electrode facing the first electrode; and at least one organic material layer between the first and second electrodes, wherein one or more of the at least one organic material layer includes the electroluminescent compound.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: October 11, 2022
    Assignees: LG DISPLAY CO., LTD., PNH TECH
    Inventors: Seon-Keun Yoo, Hee-Jun Park, Jeong-Dae Seo, Seo-Yong Hyun, Ha-Yeon Kim, Seok-Keun Yoon, Sun-Gi Kim, In-Ho Lee
  • Patent number: 11460433
    Abstract: In a floating gate semiconductor nanostructure biosensor and a method for manufacturing the biosensor, the nanostructure biosensor includes a substrate, an insulating layer, a nanostructure, a source electrode and a drain electrode, a floating gate and a biological sensing material. The insulating layer is formed on the substrate. The nanostructure is protruded from the insulating layer. The source electrode and the drain electrode are formed on the insulating layer and dispose the nanostructure therebetween. The floating gate has a metal pattern or a polysilicon pattern, and extends with contacting the nanostructure. The biological sensing material has a first end combined with an immobile molecule on the floating gate, and a second end combined with a bio molecule.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: October 4, 2022
    Assignee: OSONG MEDICAL INNOVATION FOUNDATION
    Inventors: Sung-Keun Yoo, Seung-Wan Seo, Jeong-A Kim, Dong-Jun Moon
  • Publication number: 20220293944
    Abstract: An anode active material for a lithium secondary battery and a lithium secondary battery are provided. The anode active material includes a carbon-based particle including pores formed in at least one of an inside of the particle and a surface of the particle and having a pore size of the carbon-based particle is 20 nm or less, and silicon formed at an inside of the pores of the carbon-based particle or on the surface of the carbon-based particle. A peak intensity ratio in a Raman spectrum of silicon defined as I(515)/I(480) is 1.2 or less. Difference between volume expansion ratios of carbon and silicon can be reduced to improve life-span property of the secondary battery.
    Type: Application
    Filed: March 11, 2022
    Publication date: September 15, 2022
    Inventors: Gwi Ok PARK, Seok Keun YOO, Ju Ho CHUNG
  • Publication number: 20220293945
    Abstract: An anode active material for a lithium secondary battery and a lithium secondary battery are provided. The anode active material includes a carbon-based particle including pores formed in at least one of an inside of the particle and a surface of the particle and having a pore size of the carbon-based particle is 20 nm or less, and silicon formed at an inside of the pores of the carbon-based particle or on the surface of the carbon-based particle. Silicon has an amorphous structure or a crystallite size of silicon measured by an XRD analysis is 7 nm or less. Difference between volume expansion ratios of carbon and silicon can be reduced to improve life-span property of the secondary battery.
    Type: Application
    Filed: March 11, 2022
    Publication date: September 15, 2022
    Inventors: Gwi Ok PARK, Seok Keun YOO, Ju Ho CHUNG
  • Publication number: 20220291724
    Abstract: An electronic device is provided. The electronic device includes two housing structures, a hinge structure, and a flexible display, the hinge structure includes a first saw-toothed spur gear, a second saw-toothed spur gear, a third saw-toothed spur gear, a fourth saw-toothed spur gear, a first guide structure fixed to the first housing structure and rotated by the gears, and a second guide structure fixed to the second housing structure and rotated in an opposite direction of the first guide structure, the first guide structure is rotated about a first axis formed from a bottom surface of the flexible display upwards, and the second guide structure is rotated about a second axis that is spaced apart from the first axis and is formed from the bottom surface of the flexible display.
    Type: Application
    Filed: May 23, 2022
    Publication date: September 15, 2022
    Inventors: Jong Yoon KIM, Jung Jin KIM, Young Sun PARK, Chung Keun YOO
  • Patent number: 11411222
    Abstract: A conductive agent, a slurry for forming an electrode, the slurry including the same, an electrode manufactured using the same, and a lithium secondary battery are provided. The conductive agent includes graphene flakes the maximum peak of which is observed in a range of 24.5° to 26° of 2? in a data graph obtained by a X-Ray Diffraction (XRD) analysis, wherein the aspect ratio of the average lateral size of the surfaces of the graphene flakes to the average thickness of the graphene flakes in a direction perpendicular to surfaces of the graphene flakes is 500 to 50,000.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: August 9, 2022
    Inventors: Tae Gon Kim, Seul Ki Kim, Je Young Kim, Jung Keun Yoo, Seok Woo Jeon, Jung Mo Kim
  • Publication number: 20220231236
    Abstract: The present disclosure relates to an organic compound having the following structure of Formula 1, an organic light emitting diode (OLED) where an electron transport layer and/or a charge generation layer includes the organic compound and an organic light emitting device including the organic light emitting diode. While only the specific moiety in the organic compound is deuterated, the organic compound can implement excellent luminous efficiency and luminous lifespan as a compound where all the carbon atoms are deuterated. The OLED can maximize its luminous efficiency and luminous lifespan with minimizing utilization of expensive deuterium.
    Type: Application
    Filed: June 15, 2021
    Publication date: July 21, 2022
    Inventors: Dae Wi YOON, Seon Keun YOO, Shin Han KIM, Min Gi HONG, Seong Su JEON, Ji Cheol SHIN
  • Publication number: 20220216417
    Abstract: The present disclosure relates to an organic light emitting diode comprising a first electrode; a second electrode facing the first electrode; a first emitting part including a first emitting material layer and a hole injection layer and positioned between the first and second electrodes, wherein the hole injection layer includes a first hole injection material and a second hole injection material and is positioned between the first electrode and the first emitting material layer, and wherein the first hole injection material is an indacene derivative, and the second hole injection material includes at least one of fluorene derivatives having different structures.
    Type: Application
    Filed: December 17, 2021
    Publication date: July 7, 2022
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Ji-Cheol SHIN, Jeong-Dae SEO, Shin-Han Kim, Seon-Keun YOO
  • Publication number: 20220209126
    Abstract: The present disclosure relates to an organic light emitting diode including a first electrode; a second electrode facing the first electrode; a first p-type doping layer between the first and second electrodes; a second p-type doping layer between the first p-type doping layer and the second electrode; a third p-type doping layer between the second p-type doping layer and the second electrode; a first emitting material layer between the first and second p-type doping layers; a second emitting material layer between the second and third p-type doping layers; and a third emitting material layer between the third p-type doping layer and the second electrode, wherein an electrical conductivity of the third p-type doping layer is greater than an electrical conductivity of the first p-type doping layer and is equal to or smaller than an electrical conductivity of the second p-type doping layer.
    Type: Application
    Filed: December 15, 2021
    Publication date: June 30, 2022
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Ji-Cheol SHIN, Seong-Su JEON, Shin-Han KIM, Seon-Keun YOO
  • Publication number: 20220203928
    Abstract: A vehicular belt tactile apparatus is provided. The apparatus includes a buckle, a belt configured to be fastened to the buckle and at least one air pouch disposed at a portion of the belt that contacts the body of an occupant when the belt is fastened to the buckle. An air controller generates a control signal when the belt is fastened to the buckle. The buckle includes an air supply unit that is configured to inject air into the at least one air pouch through the belt or to discharge air from the at least one air pouch in response to the control signal.
    Type: Application
    Filed: August 17, 2021
    Publication date: June 30, 2022
    Inventors: Jin Mo Lee, Jung Keun Yoo, Joong Kwan Kim, Kaang Dok Yee
  • Patent number: 11374212
    Abstract: A positive electrode for a lithium secondary battery includes a positive electrode current collector; a lower positive electrode active material layer disposed on at least one surface of the positive electrode current collector; and an upper positive electrode active material layer disposed on the lower positive electrode active material layer, wherein the lower positive electrode active material layer includes 90% or more of a sphere-type carbonaceous conductive material as a conductive material, the upper positive electrode active material layer includes 90% or more of a needle-type carbonaceous conductive material as a conductive material, and the content of the conductive material contained in the lower positive electrode active material layer is larger than the content of the conductive material contained in the upper positive electrode active material layer.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: June 28, 2022
    Inventors: Joo-Yul Baek, Jong-Heon Seol, Ye-Lin Kim, Je-Young Kim, Jung-Keun Yoo
  • Publication number: 20220173328
    Abstract: The present disclosure relates to an organic compound, and an organic light emitting diode and an organic light emitting device including the same, more specifically, relates to an organic compound being represented by following Formula, an organic light emitting diode including the organic compound and an organic light emitting device including the organic light emitting diode. The organic compound is included in an electron transporting layer and/or a p-type charge generation layer of the organic light emitting diode.
    Type: Application
    Filed: August 20, 2021
    Publication date: June 2, 2022
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Seon-Keun YOO, Dae-Wi YOON, Shin-Han KIM, Min-Gi HONG, Seong-Su JEON, Ji-Cheol SHIN
  • Patent number: 11340663
    Abstract: An electronic device is provided. The electronic device includes two housing structures, a hinge structure, and a flexible display, the hinge structure includes a first saw-toothed spur gear, a second saw-toothed spur gear, a third saw-toothed spur gear, a fourth saw-toothed spur gear, a first guide structure fixed to the first housing structure and rotated by the gears, and a second guide structure fixed to the second housing structure and rotated in an opposite direction of the first guide structure, the first guide structure is rotated about a first axis formed from a bottom surface of the flexible display upwards, and the second guide structure is rotated about a second axis that is spaced apart from the first axis and is formed from the bottom surface of the flexible display.
    Type: Grant
    Filed: May 6, 2021
    Date of Patent: May 24, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong Yoon Kim, Jung Jin Kim, Young Sun Park, Chung Keun Yoo
  • Publication number: 20220149358
    Abstract: Provided is a negative electrode active material for a lithium secondary battery including a core-shell composite including: a core including a silicon oxide (SiOx, 0<x?2) containing a lithium compound and a graphitic material; and a shell including amorphous carbon, positioned on the core. The silicon oxide (SiOx, 0<x?2) includes at least one lithium silicate selected from Li2SiO3, Li2Si2O5, and Li4SiO4 in at least a part of the silicon oxide.
    Type: Application
    Filed: November 11, 2021
    Publication date: May 12, 2022
    Inventors: Joon Hyung Moon, Gwi Ok Park, Eun Jun Park, Joon Sup Kim, Seok Keun Yoo, Ju Ho Chung
  • Patent number: 11266033
    Abstract: A portable electronic device is provided. The portable electronic device includes a first housing including a first surface and a second surface a second housing including a third surface and a fourth surface, and a hinge. The hinge includes a hinge shaft, a sliding device including a portion configured to slide to an inside or an outside of the second housing to be introduced, or slide from the inside or the outside of the second housing in a specific direction to be extracted in correspondence to a hinge operation of the second housing, and a multi-bar disposed between the first surface and the fourth surface and including multi-bar units to be spread or bent in correspondence to a hinge operation of the second housing.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: March 1, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hee Cheul Moon, Gi Dae Kim, Moo Hyun Baek, Chung Keun Yoo