Patents by Inventor Jun Hyuk Lee
Jun Hyuk 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: 11979710Abstract: A holographic-based directional sound device is provided, the device including: a sound wave generating means generating a sound wave; and a flat plate configured to have the sound wave generating means installed at the center so as to radiate the sound wave to the outside through a surface, and to be composed of a plurality of unit cells, in which at least one groove is formed on a surface of the unit cell, and a radiation angle of the sound wave is determined according to a depth of the groove with respect to the unit cell, wherein the depth of the groove is determined by an individual surface admittance calculated by a cosine function or a sine function of the sum of a first value and a second value on the basis of a preset radiation angle of the sound wave and a preset frequency of the sound wave.Type: GrantFiled: September 23, 2020Date of Patent: May 7, 2024Assignees: PUSAN NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION, CENTER FOR ADVANCED META-MATERIALSInventors: Kyungjun Song, Hak Joo Lee, Jun Hyuk Kwak, Jong Jin Park
-
Patent number: 11961945Abstract: A light emitting element includes: a light emitting stack pattern including a first semiconductor layer, an active layer, and a second semiconductor layer that are sequentially stacked along one direction; and an insulating film surrounding an outer surface of at least one of the first semiconductor layer, the active layer, and the second semiconductor layer. The insulating film including a zinc oxide (ZnO) thin film layer.Type: GrantFiled: June 17, 2021Date of Patent: April 16, 2024Assignee: Samsung Display Co., Ltd.Inventors: Jun Bo Sim, Chang Hee Lee, Yun Hyuk Ko, Sang Ho Jeon, Jae Kook Ha
-
Publication number: 20240120584Abstract: A secondary battery includes: a can having an accommodation space therein; an electrode assembly accommodated in the accommodation space in the can; and a cap assembly sealed with the can. The can has a beading part recessed into a side wall of the can at a region below where the cap assembly is accommodated, and the beading part has an acute angle with respect to the side wall of the can.Type: ApplicationFiled: October 11, 2023Publication date: April 11, 2024Inventors: Jun Ho YANG, Woo Hyuk CHOI, Tae Yoon LEE, Jun Hwan KWON, Joung Ku KIM, Hyun Suk PARK, Dong Sub LEE
-
Patent number: 11949046Abstract: A light-emitting element includes a first semiconductor layer doped to have a first polarity, a second semiconductor layer doped to have a second polarity different from the first polarity, a light-emitting layer disposed between the first and second semiconductor layers, a shell layer formed on side surfaces of the first semiconductor layer, the light-emitting layer, and the second semiconductor layer, the shell layer including a divalent metal element, and an insulating film covering an outer surface of the shell layer and surrounding the side surface of the light-emitting layer.Type: GrantFiled: August 6, 2021Date of Patent: April 2, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Se Hun Kim, Chang Hee Lee, Yun Hyuk Ko, Duk Ki Kim, Jun Woo Park, Soo Ho Lee, Jae Kook Ha, Yun Ku Jung
-
Patent number: 11871844Abstract: Provided is a reinforcement beam for horizontal frames, the reinforcement beam being configured to be used in a prefabricated shelf that is fabricated with vertical frames and horizontal frames, the horizontal frames including a connection portion fastened to the vertical frames at end portions of the connection portion, and an abutment portion which is formed by folding the connection portion such that the abutment portion is formed integrally with the connection portion and which supports a support plate. The reinforcement beam for the horizontal frames includes a body portion in which a pulling portion configured to support a lower outer surface of the connection portion is provided on each of opposite ends of the body portion. The reinforcement beam for the horizontal frames prevents the horizontal frames from collapsing under a large load.Type: GrantFiled: December 22, 2021Date of Patent: January 16, 2024Assignee: SPEEDRACK CO., LTD.Inventors: Hyo Sang Yoon, Yoon Ki Kim, Jae Koon Han, Jun Hyuk Lee
-
Publication number: 20230363530Abstract: Provided is prefabricated furniture and, more particularly, to a prefabricated shelf (angle) having assembly holes and assembly protrusions for assembling frames together, the frames being more firmly assembled as a pressing protrusion portion protrudes from a narrow portion of an assembly hole so that an assembly protrusion is forcibly fitted by the pressing protrusion part. The prefabricated shelf includes a first frame in which a pair of assembly holes, each having a wide portion and a narrow portion, are arranged symmetrically, and a second frame in which a pair of assembly protrusions, corresponding to the assembly holes and each protruding to fit into the narrow portion, are arranged symmetrically, wherein the narrow portion includes a pressing protrusion portion configured to protrude from a first end thereof and press the assembly protrusion to a second side thereof to force the assembly protrusion into place.Type: ApplicationFiled: February 10, 2023Publication date: November 16, 2023Inventors: Hyo Sang YOON, Yoon Ki KIM, Jae Koon HAN, Jun Hyuk LEE
-
Patent number: 11695187Abstract: Disclosed is a method for manufacturing a functionalized separator having a zwitterionic coating thereon. The method includes preparing a porous separator; coating a linker on a surface of the porous separator; and chemically reacting zwitterions with the linker such the zwitterions are grafted to the linker on the surface of the separator. The zwitterions grafted to the linker acts as a monolayer to functionalize the surface of the separator. The functionalized separator may disallow elution of polysulfide compound in a lithium-sulfur battery. Further, the functionalized separator may increase ion conductivity of electrolyte of the lithium-sulfur battery and thus ensure high output characteristics.Type: GrantFiled: August 11, 2020Date of Patent: July 4, 2023Assignee: Research & Business Foundation Sungkyunkwan UniversityInventors: Pil Jin Yoo, Ho Seok Park, Duk Joon Kim, Jun Hyuk Lee, Jeong Seok Yeon, Sung Mo Kang
-
Patent number: 11622625Abstract: Provided is an angle bar for shelf assembly, the angle bar including a vertical frame in which a plurality of fastening grooves is formed and a horizontal frame on which a fastening protrusion is formed, wherein the plurality of fastening grooves, each including upper and lower grooves, are formed, the lower groove has a narrower width than the upper groove, and is connected to the upper groove with an inclination portion in between, wherein the fastening protrusion includes a convex portion having an inclination surface and first and second wing portions that are formed on lateral surfaces, respectively, of the convex portion, and wherein a distance between respective end portions of the first and second wing portions is smaller than a width of the upper groove and is larger than a width of the lower groove, and the convex portion has a wider width than the lower groove.Type: GrantFiled: April 25, 2022Date of Patent: April 11, 2023Assignee: SPEEDRACK CO., LTD.Inventors: Jae Koon Han, Hyo Sang Yoon, Yoon Ki Kim, Jun Hyuk Lee
-
Publication number: 20230102003Abstract: Proposed are a non-aqueous freestanding ion conductive gel for application to an electrolyte of a lithium secondary battery and a preparation method thereof. The non-aqueous freestanding ion conductive gel including: a matrix including a hydrophobic polymer famed through polymerization of monomers having an unsaturated double-bond; a domain dispersed in the matrix and including a hydrophilic ionic liquid; and a surface active layer including an ionic liquid having surface activity, in which a portion of a hydrophobic segment in a chain of the ionic liquid having surface activity is positioned in the matrix, and a portion of a hydrophilic segment in the chain is positioned in the domain. The gel has high ionic conductivity, high lithium ion transference number, and excellent mechanical strength.Type: ApplicationFiled: June 17, 2022Publication date: March 30, 2023Inventors: Gi-Ra YI, Pil Jin Yoo, Tae Hui Kang, Seung-Jea Lee, Jeong Hoon Yoon, Jun Hyuk Lee, Won Jang Cho
-
Publication number: 20230044061Abstract: Provided is a reinforcement beam for horizontal frames, the reinforcement beam being configured to be used in a prefabricated shelf that is fabricated with vertical frames and horizontal frames, the horizontal frames including a connection portion fastened to the vertical frames at end portions of the connection portion, and an abutment portion which is formed by folding the connection portion such that the abutment portion is formed integrally with the connection portion and which supports a support plate. The reinforcement beam for the horizontal frames includes a body portion in which a pulling portion configured to support a lower outer surface of the connection portion is provided on each of opposite ends of the body portion. The reinforcement beam for the horizontal frames prevents the horizontal frames from collapsing under a large load.Type: ApplicationFiled: December 22, 2021Publication date: February 9, 2023Inventors: Hyo Sang YOON, Yoon Ki KIM, Jae Koon HAN, Jun Hyuk LEE
-
Publication number: 20220338621Abstract: Provided is an angle bar for shelf assembly, the angle bar including a vertical frame in which a plurality of fastening grooves is formed and a horizontal frame on which a fastening protrusion is formed, wherein the plurality of fastening grooves, each including upper and lower grooves, are formed, the lower groove has a narrower width than the upper groove, and is connected to the upper groove with an inclination portion in between, wherein the fastening protrusion includes a convex portion having an inclination surface and first and second wing portions that are formed on lateral surfaces, respectively, of the convex portion, and wherein a distance between respective end portions of the first and second wing portions is smaller than a width of the upper groove and is larger than a width of the lower groove, and the convex portion has a wider width than the lower groove.Type: ApplicationFiled: April 25, 2022Publication date: October 27, 2022Inventors: Jae Koon HAN, Hyo Sang YOON, Yoon Ki KIM, Jun Hyuk LEE
-
Publication number: 20220336040Abstract: The present technology includes a memory device, a memory system including the memory device, and a test operation of the memory device. The memory device includes a memory block connected to word lines and select lines, a bit line connected to the memory block, a voltage generator configured to generate a test voltage to be applied to a selected line among the word lines and the select lines, a page buffer configured to sense a voltage of the bit line to store and output test data, and a control logic circuit configured to determine whether a first defect exists in the memory block according to the test data.Type: ApplicationFiled: October 15, 2021Publication date: October 20, 2022Applicant: SK hynix Inc.Inventors: Jun Hyuk LEE, Deung Kak YOO, Dong Jae JUNG, Min Kyu LEE
-
Publication number: 20220081501Abstract: The present invention relates to an ethylene/alpha-olefin copolymer having a high weight average molecular weight and narrow molecular weight distribution, and at the same time, a reduced characteristic relaxation time, thereby showing excellent physical properties, and a method for preparing the same. A resin composition having improved volume resistance and excellent light transmittance may be prepared by using such ethylene/alpha-olefin copolymer. Accordingly, the ethylene/alpha-olefin copolymer may be utilized in various uses in electrical and electronic industrial fields.Type: ApplicationFiled: September 25, 2020Publication date: March 17, 2022Applicant: LG Chem, Ltd.Inventors: Young Woo Lee, Seul Ki Kim, Dae Woong Lee, Jin Kuk Lee, Eun Jung Lee, Jin Sam Gong, Jung Ho Jun, Jun Hyuk Lee
-
Publication number: 20210242442Abstract: Disclosed is a method for manufacturing a functionalized separator having a zwitterionic coating thereon. The method includes preparing a porous separator; coating a linker on a surface of the porous separator; and chemically reacting zwitterions with the linker such the zwitterions are grafted to the linker on the surface of the separator. The zwitterions grafted to the linker acts as a monolayer to functionalize the surface of the separator. The functionalized separator may disallow elution of polysulfide compound in a lithium-sulfur battery. Further, the functionalized separator may increase ion conductivity of electrolyte of the lithium-sulfur battery and thus ensure high output characteristics.Type: ApplicationFiled: August 11, 2020Publication date: August 5, 2021Applicant: Research & Business Foundation Sungkyunkwan UniversityInventors: Pil Jin YOO, Ho Seok PARK, Duk Joon KIM, Jun Hyuk LEE, Jeong Seok YEON, Sung Mo KANG
-
Patent number: 11048440Abstract: A memory system includes a memory device having a plurality of memory blocks and a subcommand storage circuit, and a memory controller for controlling the memory device, wherein the memory device is capable of being in one or more of a ready state, a first busy state, and a second busy state, and wherein the subcommand is stored in the subcommand storage circuit when the subcommand is received from the memory controller in the first busy state and the subcommand is executable after the first busy state is released, and the subcommand stored in the subcommand storage circuit is executed after the memory device is changed to the ready state.Type: GrantFiled: August 26, 2019Date of Patent: June 29, 2021Assignee: SK hynix Inc.Inventors: Sung-Won Bae, Jun-Hyuk Lee, Deung-Kak Yoo, Min-Kyu Lee
-
Patent number: 10991439Abstract: A memory device and an operating method of the memory device is disclosed. The memory device includes a memory cell array including a plurality of memory blocks. The memory device further includes a peripheral circuit for performing an erase voltage application operation, a first erase verify operation, and a second erase verify operation on a selected memory block among the plurality of memory blocks. The memory device also includes a control logic for setting a start erase voltage of an erase operation, based on a result of the first erase verify operation, and controlling the peripheral circuit to perform the second erase verify operation when it is determined that the first erase verify operation on the selected memory block has been passed.Type: GrantFiled: October 30, 2020Date of Patent: April 27, 2021Assignee: SK hynix Inc.Inventors: Yong Han, Jun Hyuk Lee
-
Publication number: 20210050066Abstract: A memory device and an operating method of the memory device is disclosed. The memory device includes a memory cell array including a plurality of memory blocks. The memory device further includes a peripheral circuit for performing an erase voltage application operation, a first erase verify operation, and a second erase verify operation on a selected memory block among the plurality of memory blocks. The memory device also includes a control logic for setting a start erase voltage of an erase operation, based on a result of the first erase verify operation, and controlling the peripheral circuit to perform the second erase verify operation when it is determined that the first erase verify operation on the selected memory block has been passed.Type: ApplicationFiled: October 30, 2020Publication date: February 18, 2021Applicant: SK hynix Inc.Inventors: Yong HAN, Jun Hyuk LEE
-
Patent number: 10861570Abstract: A memory device and an operating method of the memory device is disclosed. The memory device includes a memory cell array including a plurality of memory blocks. The memory device further includes a peripheral circuit for performing an erase voltage application operation, a first erase verify operation, and a second erase verify operation on a selected memory block among the plurality of memory blocks. The memory device also includes a control logic for setting a start erase voltage of an erase operation, based on a result of the first erase verify operation, and controlling the peripheral circuit to perform the second erase verify operation when it is determined that the first erase verify operation on the selected memory block has been passed.Type: GrantFiled: May 21, 2019Date of Patent: December 8, 2020Assignee: SK hynix Inc.Inventors: Yong Han, Jun Hyuk Lee
-
Publication number: 20200293227Abstract: A memory system includes a memory device having a plurality of memory blocks and a subcommand storage circuit, and a memory controller for controlling the memory device, wherein the memory device is capable of being in one or more of a ready state, a first busy state, and a second busy state, and wherein the subcommand is stored in the subcommand storage circuit when the subcommand is received from the memory controller in the first busy state and the subcommand is executable after the first busy state is released, and the subcommand stored in the subcommand storage circuit is executed after the memory device is changed to the ready state.Type: ApplicationFiled: August 26, 2019Publication date: September 17, 2020Inventors: Sung-Won BAE, Jun-Hyuk LEE, Deung-Kak YOO, Min-Kyu LEE
-
Patent number: D1013492Type: GrantFiled: October 1, 2021Date of Patent: February 6, 2024Assignee: SPEEDRACK CO., LTD.Inventors: Hyo Sang Yoon, Yoon Ki Kim, Jae Koon Han, Jun Hyuk Lee