Patents by Inventor Jiheon Lee
Jiheon 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).
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Patent number: 11967858Abstract: The present disclosure relates to an uninterruptible power supply (UPS) system and, more specifically, to a static transfer switch (STS) that can be applied to a UPS module, the static transfer switch comprising: one semiconductor rectifying element connected to either the anode terminal or the cathode terminal of a direct current power source; a bypass circuit for connecting the input terminal and the output terminal of the semiconductor rectifying element so as to bypass the semiconductor rectifying element; a breaker for opening or closing the bypass circuit; and a switch including a control unit, which controls the semiconductor rectifying element so as to conduct current when a preset conduction signal is received, controls the breaker so as to close the bypass circuit, and, when the bypass circuit is closed by the breaker, controls the semiconductor rectifying element so as to stop the conduction of current.Type: GrantFiled: March 18, 2020Date of Patent: April 23, 2024Assignee: LS ELECTRIC CO., LTD.Inventors: Jiheon Lee, Dongjin Yun, Dohyun Kim, Jihong Kim, Minjun Park, Wonseok Do
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Patent number: 11936386Abstract: A clock transfer circuit includes a first stage circuit configured to produce an output signal that uses a second signaling technology from an input signal that uses a first signaling technology; and a second stage circuit configured to produce a clock signal by delaying the output signal; wherein the first stage circuit includes a semiconductor device configured to compensate for delay fluctuation caused by fluctuation of power supply voltage between a first power source and a second power source.Type: GrantFiled: April 10, 2023Date of Patent: March 19, 2024Assignees: SK hynix Inc., Seoul National University R&DB FoundationInventors: Soyeong Shin, Yongjae Lee, Jiheon Park, Deog-Kyoon Jeong
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Patent number: 11932164Abstract: Provided is a light-emitting cell array including a first emission region including a first light-emitting cell provided in a first direction, a second emission region including a plurality of second light-emitting cells, the plurality of second light-emitting cells being stacked on the first light-emitting cell in a second direction intersecting with the first direction and provided in the first direction, and a third emission region including a plurality of third light-emitting cells different from the plurality of second light-emitting cells, the plurality of third light-emitting cells being stacked on the plurality of second light-emitting cells in the second direction and provided in the first direction.Type: GrantFiled: January 18, 2023Date of Patent: March 19, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seungwoo Lee, Gunduk Kim, Jongin Kim, Jongtae Kim, Jiheon Oh, Junho Lee, Kyuchae Cho
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Patent number: 11797046Abstract: An electronic device includes a display panel and a folding module disposed below the display panel. The folding module includes a first support member, a second support member, a first hinge slidably coupled to the first support member, a second hinge slidably coupled to the second support member, a first multi joint body coupled to the first support member, a second multi joint body spaced apart from the first multi joint body in a first direction and coupled to the second support member, and a central joint disposed between the first multi joint body and the second multi joint body. The central joint is coupled to the first multi joint body and the second multi joint body, and overlaps at least a portion of the first multi joint body and at least a portion of the second multi joint body in a plan view.Type: GrantFiled: September 21, 2021Date of Patent: October 24, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventor: Jiheon Lee
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Publication number: 20230034870Abstract: The present disclosure relates to an uninterruptible power supply (UPS) system and, more specifically, to a static transfer switch (STS) that can be applied to a UPS module, the static transfer switch comprising: one semiconductor rectifying element connected to either the anode terminal or the cathode terminal of a direct current power source; a bypass circuit for connecting the input terminal and the output terminal of the semiconductor rectifying element so as to bypass the semiconductor rectifying element; a breaker for opening or closing the bypass circuit; and a switch including a control unit, which controls the semiconductor rectifying element so as to conduct current when a preset conduction signal is received, controls the breaker so as to close the bypass circuit, and, when the bypass circuit is closed by the breaker, controls the semiconductor rectifying element so as to stop the conduction of current.Type: ApplicationFiled: March 18, 2020Publication date: February 2, 2023Inventors: Jiheon LEE, Dongjin YUN, Dohyun KIM, Jihong KIM, Minjun PARK, Wonseok DO
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Patent number: 11550357Abstract: An electronic device includes a display module including: a display panel foldable with respect to a folding axis and a support part disposed under the display panel; and an accommodating part which accommodates the display module. The display panel includes: a first display portion covered by the accommodating part in a folded state of the display panel; and a second display portion exposed to the outside in the folded state. The accommodating part includes: a first accommodating part which accommodates the first display portion in the folded state; and a second accommodating part which accommodates the first accommodating part in the folded state. As the display panel is folded, an included angle between the first display portion and the second display portion decreases, and an area in which the first accommodating part overlaps the second accommodating part increases in a plan view.Type: GrantFiled: April 13, 2021Date of Patent: January 10, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventor: Jiheon Lee
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Patent number: 11469611Abstract: The present specification relates to a power supply system enabling uninterruptible power supply, the system including a circuit breaker for regulating respective converters to which a plurality of power supply devices are connected, so as to control a power supply and demand by the opening and closing of the circuit breaker according to various situations occurring in the system, thereby enabling a UPS function to be performed between the plurality of power supply devices.Type: GrantFiled: September 10, 2019Date of Patent: October 11, 2022Assignee: LS ELECTRIC CO., LTD.Inventors: Joohoon Lee, Jiheon Lee, Dongjin Yun, Dohyun Kim, Jihong Kim
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Publication number: 20220269109Abstract: A display panel includes: a substrate including a first substrate region, a second substrate region surrounding at least a portion of the first substrate region, and a third substrate region being arranged between the first substrate region and the second substrate region and including a plurality of through portions spaced apart from each other; a display element arranged in the first substrate region, a connection wiring electrically connected to the display element and extending from the first substrate region to the second substrate region, and a pixel circuit arranged in the second substrate region, electrically connected to the connection wiring. An edge of the substrate that defines at least a portion of one of the plurality of through portions extends from the first substrate region to the second substrate region, and an extension direction of the edge changes at least twice in the third substrate region.Type: ApplicationFiled: November 1, 2021Publication date: August 25, 2022Inventors: Junghun Lee, Jiheon Lee
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Publication number: 20220261034Abstract: An electronic device includes a display panel and a folding module disposed below the display panel. The folding module includes a first support member, a second support member, a first hinge slidably coupled to the first support member, a second hinge slidably coupled to the second support member, a first multi joint body coupled to the first support member, a second multi joint body spaced apart from the first multi joint body in a first direction and coupled to the second support member, and a central joint disposed between the first multi joint body and the second multi joint body. The central joint is coupled to the first multi joint body and the second multi joint body, and overlaps at least a portion of the first multi joint body and at least a portion of the second multi joint body in a plan view.Type: ApplicationFiled: September 21, 2021Publication date: August 18, 2022Applicant: Samsung Display Co., Ltd.Inventor: JIHEON LEE
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Publication number: 20220052550Abstract: The present specification relates to a power supply device and a power supply system capable of uninterrupted power supply, which includes a circuit breaker for regulating connection to a power bus to which a plurality of power supply devices are connected, wherein the circuit breaker is opened or closed according to various situations occurring in the system so as to control power supply and demand.Type: ApplicationFiled: September 10, 2019Publication date: February 17, 2022Inventors: Jiheon LEE, Younggeun KIM, Heejung KIM, Ilhyung LIM
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Publication number: 20220052549Abstract: The present specification relates to a power supply system enabling uninterruptible power supply, the system including a circuit breaker for regulating respective converters to which a plurality of power supply devices are connected, so as to control a power supply and demand by the opening and closing of the circuit breaker according to various situations occurring in the system, thereby enabling a UPS function to be performed between the plurality of power supply devices.Type: ApplicationFiled: September 10, 2019Publication date: February 17, 2022Inventors: Joohoon LEE, Jiheon LEE, Dongjin YUN, Dohyun KIM, Jihong KIM
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Publication number: 20220052551Abstract: The present specification relates to a power supply device and a power supply system which enable uninterruptible power supply, wherein a circuit breaker is provided in a power bus to which a plurality of power supply devices are connected, so as to switch on/off the connected power supply devices, and thus the UPS function can be performed among the plurality of power supply devices by opening or closing the circuit breaker according to various situations occurring in the system to control power reception and supply.Type: ApplicationFiled: September 3, 2019Publication date: February 17, 2022Inventors: Jiheon LEE, Younggeun KIM, Heejung KIM, Ilhyung LIM
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Publication number: 20220011816Abstract: An electronic device includes a display module including: a display panel foldable with respect to a folding axis and a support part disposed under the display panel; and an accommodating part which accommodates the display module. The display panel includes: a first display portion covered by the accommodating part in a folded state of the display panel; and a second display portion exposed to the outside in the folded state. The accommodating part includes: a first accommodating part which accommodates the first display portion in the folded state; and a second accommodating part which accommodates the first accommodating part in the folded state. As the display panel is folded, an included angle between the first display portion and the second display portion decreases, and an area in which the first accommodating part overlaps the second accommodating part increases in a plan view.Type: ApplicationFiled: April 13, 2021Publication date: January 13, 2022Inventor: JIHEON LEE
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Patent number: 11192348Abstract: A light shielding tape includes a first adhesive layer, a textile base layer disposed on the first adhesive layer, a resin base layer disposed on the textile base layer, and a first light shielding layer disposed on the resin base layer. The first light shielding layer includes black pigment.Type: GrantFiled: March 22, 2019Date of Patent: December 7, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sang Sun Han, Kyu-Tae Park, Jungil Lee, Jiheon Lee
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Publication number: 20210328454Abstract: The present specification relates to a power supply device and a power supply system capable of supplying uninterruptible power, and to a power supply device and a power supply system, which comprise a breaker for controlling a connection in a power bus to which a plurality of power supply devices are connected, and thus the breaker is opened and closed according to various situations occurring in the system so as to control power demand and supply, and thus a UPS function can be performed between the plurality of power supply devices.Type: ApplicationFiled: September 3, 2019Publication date: October 21, 2021Inventors: Jiheon LEE, Younggeun KIM, Heejung KIM, Ilhyung LIM
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Publication number: 20190315104Abstract: A light shielding tape includes a first adhesive layer, a textile base layer disposed on the first adhesive layer, a resin base layer disposed on the textile base layer, and a first light shielding layer disposed on the resin base layer. The first light shielding layer includes black pigment.Type: ApplicationFiled: March 22, 2019Publication date: October 17, 2019Inventors: Sang Sun HAN, Kyu-Tae Park, Jungil Lee, Jiheon Lee
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Patent number: 10263446Abstract: The battery control circuit includes: a battery; a DC power supply unit; a first DC-DC converter providing a current path in a first direction of supplying the DC energy from the DC power supply unit to the battery, and a current path in a second direction of discharging the DC energy in the battery to a ground; a first capacitor fully discharging the battery in a manner that the sum of a voltage across the first capacitor and a voltage across the flow battery to be higher than an output voltage of the first DC-DC converter; a second DC-DC converter supplying the DC energy from the DC power supply unit to the first capacitor; and a controller controlling the first DC-DC converter to form the current flow path in the second direction when a number of times of charging and discharging the flow battery reaches a preset number.Type: GrantFiled: May 2, 2017Date of Patent: April 16, 2019Assignee: LSIS CO., LTD.Inventors: Kiwoo Park, Jiheon Lee
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Patent number: 10175530Abstract: A backlight unit includes a bottom cover, a light source, a middle mold, a diffusion plate and an optical sheet. The bottom cover defines a bottom portion and a sidewall portion which is protruded from the bottom portion. The light source is accommodated in the bottom cover. The middle mold is supported by the bottom cover and defines a horizontal supporting portion and a distance maintaining portion extending from a first end of the horizontal supporting portion in a direction perpendicular to the bottom portion. The diffusion plate overlaps the horizontal supporting portion. The optical sheet overlaps the distance maintaining portion and is spaced apart from the diffusion plate.Type: GrantFiled: October 3, 2016Date of Patent: January 8, 2019Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Seongkoo Jeong, Byungjin Park, Jungil Lee, Jiheon Lee
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Publication number: 20170324266Abstract: The battery control circuit includes: a battery; a DC power supply unit; a first DC-DC converter providing a current path in a first direction of supplying the DC energy from the DC power supply unit to the battery, and a current path in a second direction of discharging the DC energy in the battery to a ground; a first capacitor fully discharging the battery in a manner that the sum of a voltage across the first capacitor and a voltage across the flow battery to be higher than an output voltage of the first DC-DC converter; a second DC-DC converter supplying the DC energy from the DC power supply unit to the first capacitor; and a controller controlling the first DC-DC converter to form the current flow path in the second direction when a number of times of charging and discharging the flow battery reaches a preset number.Type: ApplicationFiled: May 2, 2017Publication date: November 9, 2017Applicant: LSIS CO., LTD.Inventors: Kiwoo PARK, Jiheon LEE
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Publication number: 20170123274Abstract: A backlight unit includes a bottom cover, a light source, a middle mold, a diffusion plate and an optical sheet. The bottom cover defines a bottom portion and a sidewall portion which is protruded from the bottom portion. The light source is accommodated in the bottom cover. The middle mold is supported by the bottom cover and defines a horizontal supporting portion and a distance maintaining portion extending from a first end of the horizontal supporting portion in a direction perpendicular to the bottom portion. The diffusion plate overlaps the horizontal supporting portion. The optical sheet overlaps the distance maintaining portion and is spaced apart from the diffusion plate.Type: ApplicationFiled: October 3, 2016Publication date: May 4, 2017Inventors: Seongkoo JEONG, Byungjin PARK, Jungil LEE, Jiheon LEE