Patents by Inventor Won-kyoung Choi
Won-kyoung Choi 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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Publication number: 20220289560Abstract: A semiconductor device has a first semiconductor die and a modular interconnect structure adjacent to the first semiconductor die. An encapsulant is deposited over the first semiconductor die and modular interconnect structure as a reconstituted panel. An interconnect structure is formed over the first semiconductor die and modular interconnect structure. An active area of the first semiconductor die remains devoid of the interconnect structure. A second semiconductor die is mounted over the first semiconductor die with an active surface of the second semiconductor die oriented toward an active surface of the first semiconductor die. The reconstituted panel is singulated before or after mounting the second semiconductor die. The first or second semiconductor die includes a microelectromechanical system (MEMS). The second semiconductor die includes an encapsulant and an interconnect structure formed over the second semiconductor die.Type: ApplicationFiled: May 24, 2022Publication date: September 15, 2022Applicant: STATS ChipPAC Pte. Ltd.Inventors: Yaojian Lin, Won Kyoung Choi, Kang Chen, Ivan Micallef
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Patent number: 11370655Abstract: A semiconductor device has a first semiconductor die and a modular interconnect structure adjacent to the first semiconductor die. An encapsulant is deposited over the first semiconductor die and modular interconnect structure as a reconstituted panel. An interconnect structure is formed over the first semiconductor die and modular interconnect structure. An active area of the first semiconductor die remains devoid of the interconnect structure. A second semiconductor die is mounted over the first semiconductor die with an active surface of the second semiconductor die oriented toward an active surface of the first semiconductor die. The reconstituted panel is singulated before or after mounting the second semiconductor die. The first or second semiconductor die includes a microelectromechanical system (MEMS). The second semiconductor die includes an encapsulant and an interconnect structure formed over the second semiconductor die.Type: GrantFiled: March 20, 2020Date of Patent: June 28, 2022Assignee: STATS ChipPAC Pte. Ltd.Inventors: Yaojian Lin, Won Kyoung Choi, Kang Chen, Ivan Micallef
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Patent number: 11127668Abstract: A semiconductor device comprises a first semiconductor package including a conductive layer. A substrate including an interconnect structure is disposed over the conductive layer. The interconnect structure of the substrate with the conductive layer of the first semiconductor package are self-aligned. A plurality of openings is formed in the substrate. An adhesive is disposed between the substrate and the first semiconductor package and in the openings of the substrate. A redistribution layer (RDL) is formed over the first semiconductor package opposite the substrate. A pitch of the substrate is different from a pitch of the RDL. The adhesive extends to the interconnect structure of the substrate. A second semiconductor package is disposed over the substrate and the first semiconductor package.Type: GrantFiled: September 13, 2019Date of Patent: September 21, 2021Inventors: Il Kwon Shim, Pandi C. Marimuthu, Won Kyoung Choi, Sze Ping Goh, Jose A. Caparas
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Publication number: 20200399117Abstract: A semiconductor device has a first semiconductor die and a modular interconnect structure adjacent to the first semiconductor die. An encapsulant is deposited over the first semiconductor die and modular interconnect structure as a reconstituted panel. An interconnect structure is formed over the first semiconductor die and modular interconnect structure. An active area of the first semiconductor die remains devoid of the interconnect structure. A second semiconductor die is mounted over the first semiconductor die with an active surface of the second semiconductor die oriented toward an active surface of the first semiconductor die. The reconstituted panel is singulated before or after mounting the second semiconductor die. The first or second semiconductor die includes a microelectromechanical system (MEMS). The second semiconductor die includes an encapsulant and an interconnect structure formed over the second semiconductor die.Type: ApplicationFiled: March 20, 2020Publication date: December 24, 2020Applicant: STATS ChipPAC Pte. Ltd.Inventors: Yaojian Lin, Won Kyoung Choi, Kang Chen, Ivan Micallef
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Patent number: 10662056Abstract: A semiconductor device has a first semiconductor die and a modular interconnect structure adjacent to the first semiconductor die. An encapsulant is deposited over the first semiconductor die and modular interconnect structure as a reconstituted panel. An interconnect structure is formed over the first semiconductor die and modular interconnect structure. An active area of the first semiconductor die remains devoid of the interconnect structure. A second semiconductor die is mounted over the first semiconductor die with an active surface of the second semiconductor die oriented toward an active surface of the first semiconductor die. The reconstituted panel is singulated before or after mounting the second semiconductor die. The first or second semiconductor die includes a microelectromechanical system (MEMS). The second semiconductor die includes an encapsulant and an interconnect structure formed over the second semiconductor die.Type: GrantFiled: October 24, 2018Date of Patent: May 26, 2020Assignee: STATS ChipPAC Pte. Ltd.Inventors: Yaojian Lin, Won Kyoung Choi, Kang Chen, Ivan Micallef
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Patent number: 10566808Abstract: A system for diagnosing a battery connection status includes: a DC-DC converter that converts and outputs a level of an input voltage; a battery connected to an output terminal of the DC-DC converter; and a controller that generates a control value for compensating for an error between a voltage command or a current command of the battery and a detection voltage or a detection current of the battery, controls the output of the DC-DC converter by applying the control value, and diagnoses a connection status between the DC-DC converter and the battery based on a change in error between the detection voltage or the detection current of the battery and the voltage command or the current command of the battery.Type: GrantFiled: November 10, 2017Date of Patent: February 18, 2020Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Won Kyoung Choi, Na Lae Kwon, Jee Heon Kim, Dong Jun Lee, Ho Joong Lee
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Publication number: 20200006215Abstract: A semiconductor device comprises a first semiconductor package including a conductive layer. A substrate including an interconnect structure is disposed over the conductive layer. The interconnect structure of the substrate with the conductive layer of the first semiconductor package are self-aligned. A plurality of openings is formed in the substrate. An adhesive is disposed between the substrate and the first semiconductor package and in the openings of the substrate. A redistribution layer (RDL) is formed over the first semiconductor package opposite the substrate. A pitch of the substrate is different from a pitch of the RDL. The adhesive extends to the interconnect structure of the substrate. A second semiconductor package is disposed over the substrate and the first semiconductor package.Type: ApplicationFiled: September 13, 2019Publication date: January 2, 2020Applicant: STATS ChipPAC Pte. Ltd.Inventors: Il Kwon Shim, Pandi C. Marimuthu, Won Kyoung Choi, Sze Ping Goh, Jose A. Caparas
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Patent number: 10513199Abstract: A voltage drop compensation control system and method of a power supply device are provided. The voltage drop compensation control system of the power supply device, for compensating for a voltage drop generated in an electric connection line between a direct current (DC)-DC converter and a battery includes a controller that generates a compensation voltage command that is obtained by compensating for an output voltage command of the DC-DC converter by applying a first control value for compensating for the voltage drop to the output voltage command. The controller also determines the first control value, based on an error between the compensation voltage command or an output voltage detection value of the DC-DC converter and a voltage of the battery.Type: GrantFiled: December 4, 2017Date of Patent: December 24, 2019Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Gi Bong Son, Ho Joong Lee, Dong Gyun Woo, Won Kyoung Choi, Hyun Wook Seong
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Patent number: 10510632Abstract: A semiconductor device has a carrier and a semiconductor die disposed over the carrier. A dummy die is disposed over the carrier as well. A first encapsulant is deposited over the semiconductor die and dummy die. The dummy die and a first portion of the first encapsulant is backgrinded while a second portion of the first encapsulant remains covering the semiconductor die. Backgrinding the dummy die fully removes the dummy die while the second portion of the first encapsulant remains covering the semiconductor die. A second encapsulant is optionally deposited over the dummy die prior to disposing the dummy die over the carrier. A conductive pillar is optionally formed over the dummy die prior to depositing the second encapsulant. The carrier is removed to expose an active surface of the semiconductor die. A build-up interconnect structure is formed over the active surface after removing the carrier.Type: GrantFiled: March 13, 2018Date of Patent: December 17, 2019Assignee: STATS ChipPAC Pte. Ltd.Inventors: Won Kyoung Choi, Pandi Chelvam Marimuthu
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Patent number: 10453785Abstract: A semiconductor device comprises a first semiconductor package including a conductive layer. A substrate including an interconnect structure is disposed over the conductive layer. The interconnect structure of the substrate with the conductive layer of the first semiconductor package are self-aligned. A plurality of openings is formed in the substrate. An adhesive is disposed between the substrate and the first semiconductor package and in the openings of the substrate. A redistribution layer (RDL) is formed over the first semiconductor package opposite the substrate. A pitch of the substrate is different from a pitch of the RDL. The adhesive extends to the interconnect structure of the substrate. A second semiconductor package is disposed over the substrate and the first semiconductor package.Type: GrantFiled: July 31, 2015Date of Patent: October 22, 2019Assignee: STATS ChipPAC Pte. Ltd.Inventors: Il Kwon Shim, Pandi C. Marimuthu, Won Kyoung Choi, Sze Ping Goh, Jose A. Caparas
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Patent number: 10446479Abstract: A semiconductor device has a substrate. A plurality of conductive vias is formed through the substrate. A conductive layer is formed over the substrate. An insulating layer is formed over conductive layer. A portion of the substrate is removed to expose the conductive vias. A plurality of vertical interconnect structures is formed over the substrate. A first semiconductor die is disposed over the substrate. A height of the vertical interconnect structures is less than a height of the first semiconductor die. An encapsulant is deposited over the first semiconductor die and the vertical interconnect structures. A first portion of the encapsulant is removed from over the first semiconductor die while leaving a second portion of the encapsulant over the vertical interconnect structures. The second portion of the encapsulant is removed to expose the vertical interconnect structures. A second semiconductor die is disposed over the first semiconductor die.Type: GrantFiled: November 8, 2017Date of Patent: October 15, 2019Assignee: STATS ChipPAC Pte. Ltd.Inventors: Pandi C. Marimuthu, Yaojian Lin, Kang Chen, Yu Gu, Won Kyoung Choi
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Publication number: 20190287873Abstract: A semiconductor device has a carrier and a semiconductor die disposed over the carrier. A dummy die is disposed over the carrier as well. A first encapsulant is deposited over the semiconductor die and dummy die. The dummy die and a first portion of the first encapsulant is backgrinded while a second portion of the first encapsulant remains covering the semiconductor die. Backgrinding the dummy die fully removes the dummy die while the second portion of the first encapsulant remains covering the semiconductor die. A second encapsulant is optionally deposited over the dummy die prior to disposing the dummy die over the carrier. A conductive pillar is optionally formed over the dummy die prior to depositing the second encapsulant. The carrier is removed to expose an active surface of the semiconductor die. A build-up interconnect structure is formed over the active surface after removing the carrier.Type: ApplicationFiled: March 13, 2018Publication date: September 19, 2019Applicant: STATS ChipPAC Pte. Ltd.Inventors: Won Kyoung Choi, Pandi Chelvam Marimuthu
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Patent number: 10399453Abstract: A method and system for controlling a vehicular direct current converter are provided. In particular, zero-current control is performed during control for maintaining an SOC of an auxiliary battery. Accordingly, energy loss due to charging and discharging of the auxiliary battery is minimized and the fuel efficiency of a vehicle is improved.Type: GrantFiled: November 8, 2017Date of Patent: September 3, 2019Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Ho Joong Lee, Dong Jun Shin, Won Kyoung Choi, Jun Yeon Park, Na Lae Kwon, Hyun Wook Seong, Jee Heon Kim, Chang Ryeol Yoo, Dong Jun Lee
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Patent number: 10388612Abstract: A semiconductor device has a first component. A modular interconnect structure is disposed adjacent to the first component. A first interconnect structure is formed over the first component and modular interconnect structure. A shielding layer is formed over the first component, modular interconnect structure, and first interconnect structure. The shielding layer provides protection for the enclosed semiconductor devices against EMI, RFI, or other inter-device interference, whether generated internally or from external semiconductor devices. The shielding layer is electrically connected to an external low-impedance ground point. A second component is disposed adjacent to the first component. The second component includes a passive device. An LC circuit includes the first component and second component. A semiconductor die is disposed adjacent to the first component. A conductive adhesive is disposed over the modular interconnect structure.Type: GrantFiled: July 31, 2017Date of Patent: August 20, 2019Assignee: STATS ChipPAC Pte. Ltd.Inventors: Yaojian Lin, Byung Joon Han, Rajendra D. Pendse, Il Kwon Shim, Pandi C. Marimuthu, Won Kyoung Choi, Linda Pei Ee Chua
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Patent number: 10377237Abstract: An apparatus and a method are provided for controlling a low DC-DC converter (LDC) in an electric vehicle by prioritizing respective controllers, connecting the controllers in series in ascending order according to priority, and determining a command voltage of the LDC on the basis of output voltages of the respective controllers. Accordingly, even when a controller with a highest priority is operating, controllers of lower priority continue operating. Thus, electrical load performance degradation caused by instantaneous overcurrent generated in state transitions is prevented.Type: GrantFiled: November 15, 2016Date of Patent: August 13, 2019Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Ho Joong Lee, Dong Jun Shin, Won Kyoung Choi, Jun Yeon Park, Gi Bong Son, Hyun Wook Seong, Jee Heon Kim, Chang Ryeol Yoo, Hui Sung Jang
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Publication number: 20190084437Abstract: A voltage drop compensation control system and method of a power supply device are provided. The voltage drop compensation control system of the power supply device, for compensating for a voltage drop generated in an electric connection line between a direct current (DC)-DC converter and a battery includes a controller that generates a compensation voltage command that is obtained by compensating for an output voltage command of the DC-DC converter by applying a first control value for compensating for the voltage drop to the output voltage command. The controller also determines the first control value, based on an error between the compensation voltage command or an output voltage detection value of the DC-DC converter and a voltage of the battery.Type: ApplicationFiled: December 4, 2017Publication date: March 21, 2019Inventors: Gi Bong Son, Ho Joong Lee, Dong Gyun Woo, Won Kyoung Choi, Hyun Wook Seong
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Patent number: 10220721Abstract: A method for controlling a relay of an auxiliary battery by a controller includes deciding whether or not a low direct current (DC) to DC converter (LDC) supplies power required in an electronic load in a state of charge (SOC) maintaining mode of the auxiliary battery. As a result of the decision, a turn-on state of the relay in which power of the auxiliary battery is supplied to the electronic load is maintained when the LDC does not supply the power required in the electronic load. As a result of the decision, the relay is turned off so that power of the auxiliary battery is not supplied to the electronic load when the LDC supplies the power required in the electronic load.Type: GrantFiled: December 1, 2016Date of Patent: March 5, 2019Assignee: Hyundai Motor CompanyInventors: Ho Joong Lee, Dong Jun Lee, Na Lae Kwon, Jee Heon Kim, Won Kyoung Choi
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Publication number: 20190047845Abstract: A semiconductor device has a first semiconductor die and a modular interconnect structure adjacent to the first semiconductor die. An encapsulant is deposited over the first semiconductor die and modular interconnect structure as a reconstituted panel. An interconnect structure is formed over the first semiconductor die and modular interconnect structure. An active area of the first semiconductor die remains devoid of the interconnect structure. A second semiconductor die is mounted over the first semiconductor die with an active surface of the second semiconductor die oriented toward an active surface of the first semiconductor die. The reconstituted panel is singulated before or after mounting the second semiconductor die. The first or second semiconductor die includes a microelectromechanical system (MEMS). The second semiconductor die includes an encapsulant and an interconnect structure formed over the second semiconductor die.Type: ApplicationFiled: October 24, 2018Publication date: February 14, 2019Applicant: STATS ChipPAC Pte. Ltd.Inventors: Yaojian Lin, Won Kyoung Choi, Kang Chen, Ivan Micallef
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Patent number: 10189702Abstract: A semiconductor device has a first semiconductor die and a modular interconnect structure adjacent to the first semiconductor die. An encapsulant is deposited over the first semiconductor die and modular interconnect structure as a reconstituted panel. An interconnect structure is formed over the first semiconductor die and modular interconnect structure. An active area of the first semiconductor die remains devoid of the interconnect structure. A second semiconductor die is mounted over the first semiconductor die with an active surface of the second semiconductor die oriented toward an active surface of the first semiconductor die. The reconstituted panel is singulated before or after mounting the second semiconductor die. The first or second semiconductor die includes a microelectromechanical system (MEMS). The second semiconductor die includes an encapsulant and an interconnect structure formed over the second semiconductor die.Type: GrantFiled: November 28, 2016Date of Patent: January 29, 2019Assignee: STATS ChipPAC Pte. Ltd.Inventors: Yaojian Lin, Won Kyoung Choi, Kang Chen, Ivan Micallef
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Patent number: 10160325Abstract: A vehicle power control method for jump-start uses a vehicle control system that includes a low voltage DC/DC converter for converting a voltage of a high voltage battery to a low voltage to be output and a junction box for connecting the low voltage DC/DC converter to an auxiliary battery and load. The vehicle power control method includes a jump-start preparation step in which when the auxiliary battery is in a discharge condition, a first relay, which connects or disconnects the junction box to or from the auxiliary battery, is turned off and a second relay, which connects or disconnects the junction box to or from a jump-start power supply connection terminal, is turned on; and a jump-start completion step in which, after a vehicle starts by a power inputted through the jump-start power supply connection terminal, the second relay is turned off, and the first relay is turned on.Type: GrantFiled: April 27, 2016Date of Patent: December 25, 2018Assignee: Hyundai Motor CompanyInventors: Ho Joong Lee, Jee Heon Kim, Hee Tae Yang, Won Kyoung Choi