Patents by Inventor Yun-hwa Choi

Yun-hwa 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).

  • Patent number: 11908824
    Abstract: The present invention relates to a semiconductor package in which a metal bridge, which is bent and has elasticity and a non-vertical structure, may protect a semiconductor chip in such a way that push-stress occurring while molding is relieved by being absorbed or dispersed by being diverted, a method of manufacturing the same, and the metal bridge applied to the semiconductor package.
    Type: Grant
    Filed: January 3, 2022
    Date of Patent: February 20, 2024
    Assignee: JMJ Korea Co., Ltd.
    Inventor: Yun Hwa Choi
  • Patent number: 11908766
    Abstract: The present invention relates to a cooling system where a semiconductor component including a semiconductor chip and a cooling apparatus are joined, wherein a coolant is supplied to a substrate, on which a semiconductor chip is installed, through an opening member of the cooling apparatus so that a surface of the substrate may be directly cooled by the coolant so as to improve cooling efficiency, and a cooling post structure, which enables the coolant to smoothly flow, is used to further improve cooling efficiency.
    Type: Grant
    Filed: September 28, 2021
    Date of Patent: February 20, 2024
    Assignee: JMJ Korea Co., Ltd.
    Inventor: Yun Hwa Choi
  • Patent number: 11823920
    Abstract: Provided is an apparatus for attaching semiconductor parts. The apparatus includes a substrate loading unit, at least one semiconductor part loader, a first vision examination unit, at least one semiconductor part picker, at least one adhesive hardening unit, and a substrate unloading unit, wherein the substrate loading unit supplies a substrate on which semiconductor units are arranged, the at least one semiconductor part loader supplies semiconductor parts, the first vision examination unit examines arrangement states of the semiconductor units, the at least one semiconductor part picker mounts semiconductor parts in the semiconductor units, the at least one adhesive hardening unit hardens and attaches adhesives interposed between the semiconductor units and the semiconductor parts, and the substrate unloading unit releases the substrate on which semiconductor parts are mounted.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: November 21, 2023
    Assignee: JMJ Korea Co., Ltd.
    Inventors: Yun Hwa Choi, Jung Min Park
  • Patent number: 11798864
    Abstract: Provided is a semiconductor package including: a first substrate comprising a specific pattern formed thereon to enable electrical connection; a second substrate, which is spaced apart from and faces the first substrate, comprising a specific pattern formed thereon to enable electrical connection; at least one semiconductor chip attached to the first substrate; at least one metal post formed in a non-vertical structure between the first substrate and the second substrate for dispersing a coefficient of thermal expansion (CTE) stress directly generated from the second substrate, wherein the metal post comprises one end attached on the at least one semiconductor chip, and the other end attached on the pattern of the first substrate or the second substrate; at least one terminal lead electrically connected to the first substrate or the second substrate; and a package housing covering the first and second substrates and exposing the terminal leads to the outside.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: October 24, 2023
    Assignee: JMJ Korea Co., Ltd.
    Inventor: Yun Hwa Choi
  • Publication number: 20230326830
    Abstract: Provided is a semiconductor package module including vertical terminals in which the vertical terminals are connected to increase the number of terminals, problems on bending of the terminals may be solved while in electrical connection, and resistance of electrical signals may be reduced.
    Type: Application
    Filed: February 13, 2023
    Publication date: October 12, 2023
    Applicant: JMJ Korea Co., Ltd.
    Inventor: Yun Hwa CHOI
  • Publication number: 20230282566
    Abstract: The present invention relates to a semiconductor package having a negative patterned substrate and a method of manufacturing the same, and more particularly, to a semiconductor package having a negative patterned substrate and a method of manufacturing the same, wherein in the semiconductor package and the method of manufacturing the same, a molding resin may not flow to the outside of the negative patterned substrate so as to prevent the substrate from being contaminated and a negative space is filled with the molding resin so as to stably perform a molding process.
    Type: Application
    Filed: December 5, 2022
    Publication date: September 7, 2023
    Applicant: JMJ Korea Co., Ltd.
    Inventor: Yun Hwa CHOI
  • Publication number: 20230268252
    Abstract: Provided is a semiconductor package including a heat radiation structure, a cooling system applying the semiconductor package, a substrate including a heat radiation structure, and a method of manufacturing the substrate, and more particularly, a semiconductor package including a heat radiation structure, a cooling system applying the semiconductor package, a substrate including a heat radiation structure, and a method of manufacturing the substrate, in which an area contacting a coolant enlarges through heat radiating posts having various forms and structures and a coolant flow path is formed by post holes so that heat generated from semiconductor chips may be efficiently cooled.
    Type: Application
    Filed: October 12, 2022
    Publication date: August 24, 2023
    Applicant: JMJ Korea Co., Ltd.
    Inventor: Yun Hwa CHOI
  • Patent number: 11721615
    Abstract: Provided is a coupled semiconductor package including at least two substrate pads; at least one semiconductor chip installed on each of the substrate pads; at least one terminal each of which is electrically connected to each substrate pad and each semiconductor chip; and a package housing covering a part of the at least one semiconductor chip and the at least one terminal, wherein lower surfaces of one or more substrate pads are formed to be electrically connected and lower surfaces of another one or more substrate pads are formed to be electrically insulated. Accordingly, partial insulation may be economically realized without applying an insulating material to a heat sink, when the package is joined to the heat sink.
    Type: Grant
    Filed: April 11, 2021
    Date of Patent: August 8, 2023
    Assignee: JMJ Korea Co., Ltd.
    Inventor: Yun Hwa Choi
  • Publication number: 20230238297
    Abstract: Provided is a semiconductor package and a method of manufacturing the same, wherein in the semiconductor package, an area on a surface of a heat release metal layer pressed by a molding die is expanded and the molding die directly and uniformly compresses an upper substrate and/or a lower substrate, each of which does not include heat release posts so that contamination of a substrate occurring due to a molding resin may be prevented and molding may be stably performed.
    Type: Application
    Filed: January 21, 2023
    Publication date: July 27, 2023
    Applicant: JMJ Korea Co., Ltd.
    Inventor: Yun Hwa CHOI
  • Patent number: 11682610
    Abstract: A semiconductor package includes a terminal pad having at least one first terminal lead structurally connected to the terminal pad, a semiconductor chip attached to an upper surface of the terminal pad by using a first adhesive, a heat radiation board attached to a lower surface of the terminal pad by using a second adhesive, and at least one second terminal lead electrically connected to the semiconductor chip. The second terminal lead is spaced apart from the terminal pad and is separated from the radiation board. The package further includes a metal clip electrically connecting the semiconductor chip to the second terminal lead, and a package housing covering parts of the first terminal lead, the second terminal lead, and the terminal pad. The package housing includes an adhesive spread space to expose the lower surface of the terminal pad.
    Type: Grant
    Filed: November 27, 2020
    Date of Patent: June 20, 2023
    Assignee: JMJ Korea Co., Ltd.
    Inventors: Yun Hwa Choi, Younghun Kim, Jeonghun Cho
  • Patent number: 11676931
    Abstract: A semiconductor package according to an embodiment of the present invention Includes: a lead frame comprising a pad and a lead spaced apart from the pad by a regular interval; a semiconductor chip adhered on the pad; and a clip structure electrically connecting the semiconductor chip and the lead, wherein an one end of the clip structure connected to the semiconductor chip inclines with respect to upper surfaces of chip pads of the semiconductor chip and is adhered to the upper surfaces of the chip pads of the semiconductor chip. A semiconductor package according to another embodiment of the present invention includes: a semiconductor chip comprising one or more chip pads; one or more leads electrically connected to the chip pads; and a sealing member covering the semiconductor chip, wherein an one end of the lead inclines with respect to one surface of the chip pad and is adhered to the chip pad and an other end of the lead is exposed to the outside of the sealing member.
    Type: Grant
    Filed: January 20, 2022
    Date of Patent: June 13, 2023
    Assignee: JMJ Korea Co., Ltd.
    Inventors: Yun Hwa Choi, Jeonghun Cho, Young Hun Kim, Taeheon Lee
  • Patent number: 11631627
    Abstract: Provided is a method of manufacturing a semiconductor having a double-sided substrate including preparing a first substrate on which a specific pattern is formed to enable electrical connection, preparing at least one semiconductor chip bonded to a metal post, bonding the at least one semiconductor chip to the first substrate, bonding a second substrate to the metal post, forming a package housing by packaging the first substrate and the second substrate to expose a lead frame, and forming terminal leads toward the outside of the package housing. Accordingly, the semiconductor chip and the metal post are previously joined to each other and are respectively bonded to the first substrate and the second substrate so that damage generated while bonding the semiconductor chip may be minimized and electrical properties and reliability of the semiconductor chip may be improved.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: April 18, 2023
    Assignee: JMJ Korea Co., Ltd.
    Inventor: Yun Hwa Choi
  • Publication number: 20230011694
    Abstract: Provided is a semiconductor package having a package housing in an engraved surface form and a method of manufacturing the same, wherein the semiconductor package includes: at least one substrate on which at least one semiconductor chip is installed; at least one terminal lead electrically connected to the substrates; electrical connectors for connecting the semiconductor chips to the substrates or the terminal leads; a package housing covering the semiconductor chips, the electrical connectors, and the at least one substrate; at least one stopper which is formed of a material same as that of the package housing, is higher by a certain height than exposed surfaces of the substrates, is disposed on the exposed surfaces of the substrates, or covers at least a part of the exposed surfaces; and at least one heat sink transmitting heat from the semiconductor chips and radiating heat, wherein the at least a part of the exposed surfaces of the at least one substrate is formed on the upper surface, the lower surface,
    Type: Application
    Filed: June 24, 2022
    Publication date: January 12, 2023
    Applicant: JMJ Korea Co., Ltd.
    Inventor: Yun Hwa CHOI
  • Publication number: 20220399300
    Abstract: Provided is a clip structure for a semiconductor package comprising: a first bonding unit bonded to a terminal part of an upper surface or a lower surface of a semiconductor device by using a conductive adhesive interposed therebetween, a main connecting unit which is extended and bent from the first bonding unit, a second bonding unit having an upper surface higher than the upper surface of the first bonding unit, an elastic unit elastically connected between the main connecting unit and one end of the second bonding unit, and a supporting unit bent and extended from the other end of the second bonding unit toward the main connecting unit, wherein the supporting unit is formed to incline at an angle of 1° through 179° from an extended surface of the main connecting unit and has an elastic structure so that push-stress applying to the semiconductor device while molding may be dispersed.
    Type: Application
    Filed: June 14, 2022
    Publication date: December 15, 2022
    Applicant: JMJ Korea Co., Ltd.
    Inventor: Yun Hwa CHOI
  • Patent number: 11521920
    Abstract: Provided is a semiconductor package including: at least two pads, a first substrate, at least two semiconductor devices, a second substrate, an electrical connection part, and a package housing, wherein the at least two pads are electrically or structurally separated from each other, the first substrate is formed of leads spaced apart from the pads, the at least two semiconductor devices are bonded on each of the pads, the second substrate is formed on and spaced apart from the upper parts of the semiconductor devices, is placed on and electrically connected to the at least one lead of the first substrate, and includes at least one penetrated opening unit on an area facing the at least one semiconductor device, the electrical connection part electrically connects the at least one semiconductor device with the second substrate, and the package housing covers the semiconductor devices and the electrical connection part. Accordingly, the semiconductor package has a multi die structure and is compact.
    Type: Grant
    Filed: July 22, 2021
    Date of Patent: December 6, 2022
    Assignee: JMJ Korea Co., Ltd.
    Inventor: Yun Hwa Choi
  • Publication number: 20220359452
    Abstract: The present invention relates to a semiconductor package in which a metal bridge, which is bent and has elasticity and a non-vertical structure, may protect a semiconductor chip in such a way that push-stress occurring while molding is relieved by being absorbed or dispersed by being diverted, a method of manufacturing the same, and the metal bridge applied to the semiconductor package.
    Type: Application
    Filed: January 3, 2022
    Publication date: November 10, 2022
    Applicant: JMJ Korea Co., Ltd.
    Inventor: Yun Hwa CHOI
  • Patent number: 11482463
    Abstract: Provided is a semiconductor package modularized and manufactured by preparing a main block for putting on a semiconductor chip, an insulator, and one or more sub block, preparing the semiconductor chip, preparing an adhesive used in attaching the semiconductor chip, attaching the semiconductor chip to an upper surface or upper and lower surfaces of the main block, performing an electrical connection of the semiconductor chip, preparing a substrate comprising a pattern enabling an electrical connection and vertically attaching one side of the main block to the pattern of the substrate to enable an electrical connection. In the semiconductor package above, an accumulation rate increases on the substrate due to a vertically arranged structure of the semiconductor chips and a heat emission area is enlarged to improve a heat emission effect.
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: October 25, 2022
    Assignee: JMJ Korea Co., Ltd.
    Inventors: Yun Hwa Choi, Jeonghun Cho
  • Publication number: 20220319946
    Abstract: The present invention relates to a cooling system where a semiconductor component including a semiconductor chip and a cooling apparatus are joined, wherein a coolant is supplied to a substrate, on which a semiconductor chip is installed, through an opening member of the cooling apparatus so that a surface of the substrate may be directly cooled by the coolant so as to improve cooling efficiency, and a cooling post structure, which enables the coolant to smoothly flow, is used to further improve cooling efficiency.
    Type: Application
    Filed: September 28, 2021
    Publication date: October 6, 2022
    Applicant: JMJ Korea Co., Ltd.
    Inventor: Yun Hwa CHOI
  • Publication number: 20220285304
    Abstract: Provided is a semiconductor package including: a pad substrate on which a semiconductor chip is installed; a solder formed on the pad substrate having a length same as or longer than a side of the semiconductor chip; and an intagliated groove formed on the pad substrate having a length longer than at least the side of the semiconductor chip and filled with at least a certain amount of melted solder, wherein the solder having a thickness of at least 1 ?m or above is filled in the intagliated groove to have a length of at least 3 ?m or above and an intermetallic compound layer is formed on a certain area included in an inner wall of the intagliated groove. Accordingly, movement of the semiconductor chip may be restricted so that the quality of following processes may be improved, and electrical and mechanical combination between the solder and the pad substrate may be stabled.
    Type: Application
    Filed: December 6, 2021
    Publication date: September 8, 2022
    Applicant: JMJ Korea Co., Ltd.
    Inventor: Yun Hwa CHOI
  • Patent number: 11417577
    Abstract: Provided is a semiconductor package including: at least one first substrate including at least one first substrate terminal extended therefrom; at least one second substrate joined to the upper surface of the first substrate using ultrasonic welding; at least one semiconductor chip joined to the upper surface of the second substrate; a package housing covering the at least one semiconductor chip and an area of the second substrate, where ultrasonic welding is performed; and terminals separated from the first substrate, electrically connected to the at least one semiconductor chip through electric signals, and at least one of them is exposed to the outside of the package housing, wherein a thickness of the terminals formed inside the package housing is same as or smaller than a thickness of the first substrate and the second substrate includes at least one embossing groove on the upper surface thereof.
    Type: Grant
    Filed: April 11, 2021
    Date of Patent: August 16, 2022
    Assignee: JMJ Korea Co., Ltd.
    Inventor: Yun Hwa Choi