Patents by Inventor Chang Hee Lee

Chang Hee Lee 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: 11940932
    Abstract: Provided is an operating method of a storage device. The method includes providing temperature information of each of a plurality of volatile memory devices in the storage device to a host device; and receiving a setting command related to a refresh operation of the plurality of volatile memory devices from the host device, wherein the plurality of volatile memory devices are classified into groups based on temperature information, and wherein the setting command indicates a number of rows of the plurality of volatile memory devices to be refreshed differently for each of the groups based on the temperature information.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: March 26, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Doo Hwan Oh, Seung-Hun Lee, Jin Hun Jeong, Chang Ho Yun, Kyung-Hee Han
  • Patent number: 11935876
    Abstract: A light-emitting element ink, a display device, and a method of fabricating the display device are provided. The light-emitting element ink includes a light-emitting element solvent, light-emitting elements dispersed in the light-emitting element solvent, each of the light-emitting elements including a plurality of semiconductor layers and an insulating film that surrounds parts of outer surfaces of the semiconductor layers, and a surfactant dispersed in the light-emitting element solvent, the surfactant including a fluorine-based and/or a silicon-based surfactant.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: March 19, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun Bo Sim, Duk Ki Kim, Yong Hwi Kim, Hyo Jin Ko, Chang Hee Lee, Chan Woo Joo, Jae Kook Ha, Na Mi Hong
  • Patent number: 11937484
    Abstract: A display device and method of manufacturing same includes: a display panel having a pixel area and a peripheral area adjacent to the pixel area, a light control layer disposed on the display panel and at least partially overlapping the pixel area, a light blocking portion at least partially overlapping the peripheral area, and a protective layer disposed between the light control layer and the light blocking portion.
    Type: Grant
    Filed: May 19, 2022
    Date of Patent: March 19, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Keunwoo Park, Min-Jae Kim, Min-Hee Kim, Taehoon Kim, DoKyung Youn, Chang-Hun Lee
  • Patent number: 11921456
    Abstract: An example image forming apparatus includes a frame, a first shaft supported by the frame, and a first coupler. The first coupler includes a body coupled to one end of the first shaft and a first protrusion protruding from the body in an axial direction of the first shaft, the first protrusion having a first surface and a second protrusion protruding from the first surface. The second protrusion is to lock with a groove to mount a cartridge on the frame, the first shaft is to provide a rotational force in a first rotational direction to rotate the second protrusion of the first coupler and to insert the second protrusion into the groove to lock with the cartridge, and the first surface of the first protrusion of the first coupler is to contact a second surface to transmit the rotational force to the second coupler in the first rotational direction.
    Type: Grant
    Filed: February 22, 2023
    Date of Patent: March 5, 2024
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Pil-Seung Oh, Taeil Jung, Tae-Hee Kim, Chang-Woo Lee
  • Publication number: 20240069875
    Abstract: Disclosed herein are a neural network model deployment method and apparatus for providing a deep learning service. The neural network model deployment method may include providing a specification wizard to a user, searching for and training a neural network based on a user requirement specification that is input through the specification wizard, generating a neural network template code based on the user requirement specification and the trained neural network, converting the trained neural network into a deployment neural network that is usable in a target device based on the user requirement specification, and deploying the deployment neural network to the target device.
    Type: Application
    Filed: June 14, 2023
    Publication date: February 29, 2024
    Inventors: Jae-Bok PARK, Chang-Sik CHO, Kyung-Hee LEE, Ji-Young KWAK, Seon-Tae KIM, Hong-Soog KIM, Jin-Wuk SEOK, Hyun-Woo CHO
  • Publication number: 20240074258
    Abstract: An electronic device includes a display device, which may be fabricated using a described method. The display device includes a glass substrate including a first surface, a second surface opposite the first surface, and a side surface between the first surface and the second surface, an outermost structure on the first surface of the glass substrate and located adjacent to an edge of one side of the glass substrate, and a display area including a plurality of light emitting areas on the first surface of the glass substrate and located farther from the edge of the one side of the glass substrate than the outermost structure is. A minimum distance from the side surface of the glass substrate to the outermost structure is equal to 130 ?m or less.
    Type: Application
    Filed: May 5, 2023
    Publication date: February 29, 2024
    Inventors: Wan Jung KIM, Dong Jo KIM, Sun Hwa KIM, Young Ji KIM, Chang Sik KIM, Kyung Ah NAM, Hyo Young MUN, Yong Seung PARK, Yi Seul UM, Dae Sang YUN, Kwan Hee LEE, So Young LEE, Young Hoon LEE, Young Seo CHOI, Sun Young KIM, Ji Won SOHN, Do Young LEE, Seung Hoon LEE
  • Publication number: 20240066919
    Abstract: A drive axle assembly capable of reducing drag torque by eliminating an inner bearing seal from a wheel bearing and capable of reducing the generation of frictional noise at corrugations of a boot. The drive axle assembly includes a wheel bearing assembled with a wheel housing, an outer ring having a ring shape and including an outer-diameter portion secured to an outer wheel of a wheel bearing, a boot including a large-diameter portion formed at one end thereof and assembled with an inner-diameter portion of the outer ring, and a bearing seal unit disposed between a small-diameter portion formed at the other end of the boot and a drive shaft to restrict rotation of the boot and to prevent introduction of foreign substances.
    Type: Application
    Filed: August 25, 2022
    Publication date: February 29, 2024
    Inventors: Chang Hee JEONG, Hee Joon KIM, Bum Jae LEE
  • Publication number: 20240021955
    Abstract: The present invention relates to a separator, a method of manufacturing the separator, and an electrochemical device including the separator. An embodiment of the present invention may provide a separator including: a porous substrate; an inorganic particle layer provided on at least one surface of the porous substrate; and a heat fusion layer provided on at least one surface of the inorganic particle layer, wherein a surface gloss value at 60° C. of a surface of the heat fusion layer is 10 GU or more.
    Type: Application
    Filed: September 25, 2023
    Publication date: January 18, 2024
    Inventors: Won Sub KWACK, Tae Wook KWON, Heung Taek BAE, Chang Hee LEE
  • Publication number: 20230416548
    Abstract: A light emitting element ink and a method of manufacturing a display device are provided. The light emitting element ink includes a light emitting element solvent, a light emitting element dispersed in the light emitting element solvent, the light emitting element including a plurality of semiconductor layers and an insulating film surrounding outer surfaces of the semiconductor layers, a thickener dispersed in the light emitting element solvent, wherein a compound of the thickener includes a functional group capable of forming a hydrogen bond together with a compound of the light emitting element solvent or another compound of the thickener and the compound of the thickener is represented by Chemical Formula 1.
    Type: Application
    Filed: September 12, 2023
    Publication date: December 28, 2023
    Inventors: Jun Bo SIM, Hyo Jin KO, Duk Ki KIM, Chang Hee LEE, Jae Kook HA
  • Publication number: 20230402712
    Abstract: A separator for a secondary battery, a method of manufacturing the separator, and a secondary battery including the separator, where these separator includes: a porous substrate and an inorganic particle layer formed on at least one surface of the porous substrate, wherein a heat shrinkage rate S of the separator is 8% or less may be provided.
    Type: Application
    Filed: June 8, 2023
    Publication date: December 14, 2023
    Inventors: Tae Wook KWON, Won Sub KWACK, Heung Taek BAE, Chang Hee LEE
  • Publication number: 20230402715
    Abstract: A separator, a method of manufacturing the separator, and an electrochemical device including the separator with the separator including: a porous substrate; and an inorganic particle layer provided on at least one surface of the porous substrate, wherein the inorganic particle layer includes inorganic particles and a hydrolytic condensate of a silane compound.
    Type: Application
    Filed: June 8, 2023
    Publication date: December 14, 2023
    Inventors: Chang Hee LEE, Won Sub KWACK, Tae Wook KWON, Heung Taek BAE
  • Publication number: 20230402716
    Abstract: Provided are a separator, a method of manufacturing the separator, and an electrochemical device including the separator. According to an embodiment of the present disclosure, a separator including a porous substrate and an inorganic particle layer provided on at least one surface of the porous substrate, the inorganic particle layer including inorganic particles, a hydrolytic condensate binder of a polar silane compound, and an aqueous polymer binder, wherein an amount of change in peel strength, ?P is 1.1 or more may be provided.
    Type: Application
    Filed: June 8, 2023
    Publication date: December 14, 2023
    Inventors: Heung Taek BAE, Chang Hee LEE, Won Sub KWACK, Tae Wook KWON
  • Patent number: 11811090
    Abstract: The present invention relates to a separator, a method of manufacturing the separator, and an electrochemical device including the separator. An embodiment of the present invention may provide a separator including: a porous substrate; an inorganic particle layer provided on at least one surface of the porous substrate; and a heat fusion layer provided on at least one surface of the inorganic particle layer, wherein a surface gloss value at 60° C. of a surface of the heat fusion layer is 10 GU or more.
    Type: Grant
    Filed: June 8, 2023
    Date of Patent: November 7, 2023
    Assignees: SK INNOVATION CO., LTD., SK IE TECHNOLOGY CO., LTD.
    Inventors: Won Sub Kwack, Tae Wook Kwon, Heung Taek Bae, Chang Hee Lee
  • Patent number: 11787964
    Abstract: A light emitting element ink and a method of manufacturing a display device are provided. The light emitting element ink includes a light emitting element solvent, a light emitting element dispersed in the light emitting element solvent, the light emitting element including a plurality of semiconductor layers and an insulating film surrounding outer surfaces of the semiconductor layers, a thickener dispersed in the light emitting element solvent, wherein a compound of the thickener includes a functional group capable of forming a hydrogen bond together with a compound of the light emitting element solvent or another compound of the thickener and the compound of the thickener is represented by Chemical Formula 1.
    Type: Grant
    Filed: April 16, 2021
    Date of Patent: October 17, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun Bo Sim, Hyo Jin Ko, Duk Ki Kim, Chang Hee Lee, Jae Kook Ha
  • Publication number: 20230327287
    Abstract: A separator and an electrochemical device including the same. The separator includes: a porous substrate; and a coating layer provided on one or both surfaces of the porous substrate. The coating layer includes inorganic particles, a particulate polymer binder, and an aqueous polymer binder, and the separator has a Ga/Gc value represented by the following Equation (1) of 0.2 to 0.75: (1) Ga/Gc, wherein Ga is a surface gloss of the coating layer, and Gc is a surface gloss of a coating layer of a separator in which the coating layer including 90.0 to 99.9 wt % of inorganic particles having an average particle diameter of 100 to 500 nm, BET of 15 to 20 m2/g, and a bulk density of 200 to 300 kg/m3 and 0.1 to 10 wt % of an aqueous polymer binder is provided at a thickness of 3 ?m or less on the porous substrate.
    Type: Application
    Filed: April 7, 2023
    Publication date: October 12, 2023
    Inventors: Yun Bong KIM, Eun Ji OH, Chang Hee LEE, Kyu Young CHO
  • Patent number: 11728464
    Abstract: A light emitting element includes a first semiconductor layer; an active layer on the first semiconductor layer; a second semiconductor layer on the active layer; an insulating film surrounding an outer peripheral surface of each of the first semiconductor layer, the active layer and the second semiconductor layer; and a polymer film including a polymer chain and on at least a portion of a surface of the insulating film.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: August 15, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong Won Park, Chang Hee Lee, Duk Ki Kim, Yun Ku Jung, Yun Hyuk Ko, Jae Kook Ha
  • Publication number: 20230255048
    Abstract: A display device includes a substrate on which pixels are defined, a pixel electrode disposed for each of the pixels on the substrate, a pixel defining layer disposed along a boundary of the pixels, the pixel defining layer including an opening exposing the pixel electrode, a light emitting layer disposed on the pixel electrode in the opening of the pixel defining layer, and a hole injection layer disposed between the pixel electrode and the light emitting layer. The hole injection layer includes an adhesion promoting layer disposed on the pixel electrode.
    Type: Application
    Filed: April 20, 2023
    Publication date: August 10, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Seung Mook LEE, Chang Hee LEE, Yool Guk KIM, Young Mo KOO, Jae Kook HA
  • Publication number: 20230215983
    Abstract: A method for fabricating a light emitting element includes preparing a substrate, and forming a first semiconductor material layer, a light emitting material layer, a second semiconductor material layer and an electrode material layer on the substrate, forming semiconductor rods spaced apart from each other by etching the first semiconductor material layer, the light emitting material layer, the second semiconductor material layer and the electrode material layer in a direction perpendicular to an upper surface of the substrate, forming an insulating layer surrounding sides of the semiconductor rods through a sol-gel process by immersing the substrate, including the semiconductor rods, in a solution containing a precursor material, and forming light emitting elements by separating the semiconductor rods, including the insulating layer, from the substrate, and the light emitting elements have an external quantum efficiency of 20.2±0.6%.
    Type: Application
    Filed: January 6, 2023
    Publication date: July 6, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Mi Hyang SHEEN, Yun Hyuk KO, Dong Uk KIM, Na Ri AHN, Chang Hee LEE, Do Hyung KIM, Ran KIM, In Pyo KIM, Ki Young YEON, Je Won YOO, Joo Hee LEE, Sang Ho JEON, Jung Woon JUNG, Chan Woo JOO, Jin Young CHOI, Na Mi HONG, Jong Il KIM, Jin Ho BYUN, Sang Ho OH, Jae Kwang LEE, Yong Seok CHOI, Jong Hoon HA
  • Publication number: 20230110744
    Abstract: A display device includes an auxiliary electrode disposed on a substrate, a bank layer disposed on the auxiliary electrode, a conductive layer disposed on the auxiliary electrode, the conductive layer including a base portion and protrusions protruded from the base portion, an organic layer disposed on the conductive layer, and a cathode electrode disposed on the organic layer, the cathode electrode being in contact with the protrusions.
    Type: Application
    Filed: May 17, 2022
    Publication date: April 13, 2023
    Applicant: Samsung Display Co., LTD.
    Inventors: Ji Yoon KIM, Chang Hee LEE, Dong Hoon KWAK, Young Mo KOO
  • Patent number: 11577493
    Abstract: The present invention relates to a method capable of easily manufacturing a curved thin glass sheet and a curved joined glass sheet to which functionality is added.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: February 14, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Jun Hak Oh, Ho Seong Kang, Jae Hyuk Yoon, Chang Hee Lee