Patents by Inventor Seong-Hun CHOE
Seong-Hun CHOE 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: 10575424Abstract: Embodiments disclosed herein generally relate to hermetic electrical connectors used in hard disk drives. The hermetic electrical connector includes a barrier structure having a first plurality of connecting pads disposed on a first surface of the barrier structure and a second plurality of connecting pads disposed on a second surface of the barrier structure opposite the first surface. A plurality of conductors is disposed within the barrier structure, and each conductor is coupled to a connecting pad of the first plurality of connecting pads and a corresponding connecting pad of the second plurality of connecting pads. The barrier structure further includes a dielectric material between the first and second surfaces, and one or more layers embedded in the dielectric material. The addition of the layers helps choke the helium gas flow, thus improving sealing of the electrical connector while maintaining high-speed electrical transmission.Type: GrantFiled: February 20, 2017Date of Patent: February 25, 2020Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.Inventors: Yuta Onobu, Takako Hayakawa, Kimihiko Sudo, Seong-Hun Choe, Takehito Nagata, Yuji Soga, Nobumasa Nishiyama, Kazuhiro Nagaoka
-
Patent number: 10515668Abstract: A low permeability electrical feed-through involves a laminate structure having alternating conductive and insulating layers with a conductive through-hole positioned therethrough, by which a lower connector pad is electrically connected with an upper connector pad. Such a feed-through may be used at an interface between a hermetically-sealed internal environment, such as in a lighter-than-air gas filled data storage device, and the external environment. An insulating layer is positioned and configured such that an associated horizontal leak path can meet an allowable feed-through leak rate, while the collection of layers is configured such that an associated vertical leak path can meet the feed-through leak rate.Type: GrantFiled: June 21, 2019Date of Patent: December 24, 2019Assignee: Western Digital Technologies, Inc.Inventors: Kimihiko Sudo, Seong-Hun Choe, Kazuhiro Nagaoka
-
Publication number: 20190304510Abstract: A low permeability electrical feed-through involves a laminate structure having alternating conductive and insulating layers with a conductive through-hole positioned therethrough, by which a lower connector pad is electrically connected with an upper connector pad. Such a feed-through may be used at an interface between a hermetically-sealed internal environment, such as in a lighter-than-air gas filled data storage device, and the external environment. An insulating layer is positioned and configured such that an associated horizontal leak path can meet an allowable feed-through leak rate, while the collection of layers is configured such that an associated vertical leak path can meet the feed-through leak rate.Type: ApplicationFiled: June 21, 2019Publication date: October 3, 2019Inventors: Kimihiko Sudo, Seong-Hun Choe, Kazuhiro Nagaoka
-
Patent number: 10395694Abstract: A low permeability electrical feed-through involves a laminate structure having alternating conductive and insulating layers with a conductive through-hole positioned therethrough, by which a lower connector pad is electrically connected with an upper connector pad. Such a feed-through may be used at an interface between a hermetically-sealed internal environment, such as in a lighter-than-air gas filled data storage device, and the external environment. An insulating layer is positioned and configured such that an associated horizontal leak path can meet an allowable feed-through leak rate, while the collection of layers is configured such that an associated vertical leak path can meet the feed-through leak rate.Type: GrantFiled: August 9, 2017Date of Patent: August 27, 2019Assignee: Western Digital Technologies, Inc.Inventors: Kimihiko Sudo, Seong-Hun Choe, Kazuhiro Nagaoka
-
Publication number: 20190104630Abstract: Embodiments disclosed herein generally relate to hermetic electrical connectors used in hard disk drives. The hermetic electrical connector includes a barrier structure having a first plurality of connecting pads disposed on a first surface of the barrier structure and a second plurality of connecting pads disposed on a second surface of the barrier structure opposite the first surface. A plurality of conductors is disposed within the barrier structure, and each conductor is coupled to a connecting pad of the first plurality of connecting pads and a corresponding connecting pad of the second plurality of connecting pads. The barrier structure further includes a dielectric material between the first and second surfaces, and one or more layers embedded in the dielectric material. The addition of the layers helps choke the helium gas flow, thus improving sealing of the electrical connector while maintaining high-speed electrical transmission.Type: ApplicationFiled: February 20, 2017Publication date: April 4, 2019Inventors: Yuta ONOBU, Takako HAYAKAWA, Kimihiko SUDO, Seong-Hun CHOE, Takehito NAGATA, Yuji SOGA, Nobumasa NISHIYAMA, Kazuhiro NAGAOKA
-
Patent number: 10074404Abstract: A device is disclosed herein. The device comprises a housing, a gas, an antenna, and a control module. The housing defines and hermetically seals an interior cavity. The gas is contained within the interior cavity of the housing at a pressure greater than atmospheric pressure. At least a portion of the antenna is within the interior cavity of the housing. The control module is operably coupled with the antenna to transmit an incident radio wave into the interior cavity of the housing and receive a reflected radio wave within the interior cavity of the housing. The control module is configured to determine a resonance frequency of the interior cavity of the housing based on, at least partially, the reflected radio wave, and determine the pressure of the gas contained within the interior cavity of the housing based on, at least partially, the resonance frequency of the interior cavity of the housing.Type: GrantFiled: November 28, 2016Date of Patent: September 11, 2018Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.Inventors: Seong-Hun Choe, Yuta Onobu
-
Publication number: 20180149536Abstract: A device is disclosed herein. The device comprises a housing, a gas, an antenna, and a control module. The housing defines and hermetically seals an interior cavity. The gas is contained within the interior cavity of the housing at a pressure greater than atmospheric pressure. At least a portion of the antenna is within the interior cavity of the housing. The control module is operably coupled with the antenna to transmit an incident radio wave into the interior cavity of the housing and receive a reflected radio wave within the interior cavity of the housing. The control module is configured to determine a resonance frequency of the interior cavity of the housing based on, at least partially, the reflected radio wave, and determine the pressure of the gas contained within the interior cavity of the housing based on, at least partially, the resonance frequency of the interior cavity of the housing.Type: ApplicationFiled: November 28, 2016Publication date: May 31, 2018Inventors: Seong-Hun Choe, Yuta Onobu
-
Patent number: 9870806Abstract: Embodiments disclosed herein generally relate to hermetic electrical connectors used in hard disk drives. The hermetic electrical connector includes a barrier structure having a first plurality of connecting pads disposed on a first surface of the barrier structure and a second plurality of connecting pads disposed on a second surface of the barrier structure opposite the first surface. A plurality of conductors is disposed within the barrier structure, and each conductor is coupled to a connecting pad of the first plurality of connecting pads and a corresponding connecting pad of the second plurality of connecting pads. The barrier structure further includes a dielectric material between the first and second surfaces, and one or more layers embedded in the dielectric material. The addition of the layers helps choke the helium gas flow, thus improving sealing of the electrical connector while maintaining high-speed electrical transmission.Type: GrantFiled: January 13, 2017Date of Patent: January 16, 2018Assignee: Western Digital Technologies, Inc.Inventors: Yuta Onobu, Takako Hayakawa, Kimihiko Sudo, Seong-Hun Choe, Takehito Nagata, Yuji Soga, Nobumasa Nishiyama, Kazuhiro Nagaoka
-
Publication number: 20170278551Abstract: Embodiments disclosed herein generally relate to hermetic electrical connectors used in hard disk drives. The hermetic electrical connector includes a barrier structure having a first plurality of connecting pads disposed on a first surface of the barrier structure and a second plurality of connecting pads disposed on a second surface of the barrier structure opposite the first surface. A plurality of conductors is disposed within the barrier structure, and each conductor is coupled to a connecting pad of the first plurality of connecting pads and a corresponding connecting pad of the second plurality of connecting pads. The barrier structure further includes a dielectric material between the first and second surfaces, and one or more layers embedded in the dielectric material. The addition of the layers helps choke the helium gas flow, thus improving sealing of the electrical connector while maintaining high-speed electrical transmission.Type: ApplicationFiled: January 13, 2017Publication date: September 28, 2017Inventors: Yuta ONOBU, Takako HAYAKAWA, Kimihiko SUDO, Seong-Hun CHOE, Takehito NAGATA, Yuji SOGA, Nobumasa NISHIYAMA, Kazuhiro NAGAOKA
-
Patent number: 9734874Abstract: In the context of a hard disk drive (HDD), an adhesive leak channel structural feature is positioned in an area at which an electrical feed-through is adhered with an adhesive to an enclosure base, where the leak channel feature inhibits the leakage of gas through the adhesive. Embodiments include providing the leak channel feature on the base and/or on the feed-through. Embodiments may further include application of an electrodeposition coating to the base in an area at which the adhesive is in contact.Type: GrantFiled: February 2, 2016Date of Patent: August 15, 2017Assignee: Western Digital Technologies, Inc.Inventors: Seong-Hun Choe, Kimihiko Sudo, Yuta Onobu, Takehito Nagata, Hajime Eguchi, Kyosuke Yoshida, Naoshi Mizumoto
-
Publication number: 20170221527Abstract: In the context of a hard disk drive (HDD), an adhesive leak channel structural feature is positioned in an area at which an electrical feed-through is adhered with an adhesive to an enclosure base, where the leak channel feature inhibits the leakage of gas through the adhesive. Embodiments include providing the leak channel feature on the base and/or on the feed-through. Embodiments may further include application of an electrodeposition coating to the base in an area at which the adhesive is in contact.Type: ApplicationFiled: February 2, 2016Publication date: August 3, 2017Inventors: Seong-Hun Choe, Kimihiko Sudo, Yuta Onobu, Takehito Nagata, Hajime Eguchi, Kyosuke Yoshida, Naoshi Mizumoto
-
Patent number: 9558790Abstract: Embodiments disclosed herein generally relate to hermetic electrical connectors used in hard disk drives. The hermetic electrical connector includes a barrier structure having a first plurality of connecting pads disposed on a first surface of the barrier structure and a second plurality of connecting pads disposed on a second surface of the barrier structure opposite the first surface. A plurality of conductors is disposed within the barrier structure, and each conductor is coupled to a connecting pad of the first plurality of connecting pads and a corresponding connecting pad of the second plurality of connecting pads. The barrier structure further includes a dielectric material between the first and second surfaces, and one or more layers embedded in the dielectric material. The addition of the layers helps choke the helium gas flow, thus improving sealing of the electrical connector while maintaining high-speed electrical transmission.Type: GrantFiled: March 24, 2016Date of Patent: January 31, 2017Assignee: HGST Netherlands B.V.Inventors: Yuta Onobu, Takako Hayakawa, Kimihiko Sudo, Seong-Hun Choe, Takehito Nagata, Yuji Soga, Nobumasa Nishiyama, Kazuhiro Nagaoka
-
Patent number: 9418710Abstract: A hard disk drive (HDD) filter assembly may include an inlet for receiving an input gas, a cyclonic particle separator configured for separating certain sized particulates from the gas, and a trap chamber for securing the particulates separated from the gas. Such a filter assembly may be designed and configured to separate and secure nanoparticulates from the input gas, such as nanoparticulates with diameters less than around 100 nm. A filter assembly may further include a desiccant chamber for controlling the humidity of the cleaned gas and a membrane for absorbing and/or adsorbing some remaining particulates from the gas before the gas enters the main chamber of the HDD.Type: GrantFiled: June 17, 2015Date of Patent: August 16, 2016Assignee: HGST Netherlands B.V.Inventors: Seong-Hun Choe, Jr., Hiroaki Sudo, Keio Wakabayashi
-
Publication number: 20160109322Abstract: The present disclosure relates to a leak detection apparatus that includes an acoustic wave actuator mounted within a hermetically sealed chamber. The hermetically sealed chamber isolates a fluid medium from an external atmosphere and the acoustic wave actuator propagates an acoustic wave through the fluid medium. The apparatus further includes an acoustic wave transducer mounted within the hermetically sealed chamber and a comparison module. The acoustic wave transducer detects fluid pressure wave data related to the acoustic wave. The comparison module calculates an acoustic velocity based on the fluid pressure wave data and compares the acoustic velocity to a predetermined threshold velocity in order to recognize leaks in the hermetically sealed chamber.Type: ApplicationFiled: October 20, 2014Publication date: April 21, 2016Inventors: Hajime Eguchi, Seong-Hun Choe, Hiromi Uiji
-
Patent number: 8576516Abstract: A magnetic disc apparatus includes a micro actuator for two-stage actuator having a first stage and a second stage, and a slider mounted to the miro actuator and having a head element to perform recording and reproduction into/from a magnetic disc. A thermal actuator and a spring part are provided on a table, on which the slider is put. The thermal actuator is connected to the slider, and the thermal actuator includes a V-shaped thin film resistance.Type: GrantFiled: May 11, 2011Date of Patent: November 5, 2013Assignee: Hitachi, Ltd.Inventors: Seong-Hun Choe, Shigeo Nakamura
-
Publication number: 20130009488Abstract: Disclosed is a structure for raising the Q-value of a near-field antenna used by a non-contact power transmission device that utilizes magnetic field coupling in the near field in a manner improving the efficiency of power transmission. The near-field antenna used by the non-contact power transmission device galvanically isolates a resonant circuit including a resonant first inductor 31 and a first capacitor 32 from a transmission circuit or a reception circuit and, through electromagnetic coupling or inductive coupling established between the transmission or reception circuit and the near-field antenna using a second inductor 33 or a second capacitor 34, maintains a high Q even if the coupling between the antennas weakens due to an extended distance the antennas.Type: ApplicationFiled: August 27, 2010Publication date: January 10, 2013Applicant: HITACHI, LTD.Inventors: Seong-Hun Choe, Masatoshi Kanamaru
-
Publication number: 20110292547Abstract: A micro actuator for two-stage actuator, which serves to position a magnetic disc apparatus, according to the invention comprises thermal actuators formed from a thin film resistance to generate a high force and arranged on both sides of a slider, and a parallel flat plate spring for driving the slider and a head element in a track widthwise direction, and has function to mount thereon a laser diode for thermal assist recording.Type: ApplicationFiled: May 11, 2011Publication date: December 1, 2011Inventors: Seong-Hun CHOE, Shigeo Nakamura