Patents by Inventor Haijing Cao

Haijing Cao 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: 10211183
    Abstract: A semiconductor device is made by providing a substrate, forming a first insulation layer over the substrate, forming a first conductive layer over the first insulation layer, forming a second insulation layer over the first conductive layer, and forming a second conductive layer over the second insulation layer. A portion of the second insulation layer, first conductive layer, and second conductive layer form an integrated passive device (IPD). The IPD can be an inductor, capacitor, or resistor. A plurality of conductive pillars is formed over the second conductive layer. One conductive pillar removes heat from the semiconductor device. A third insulation layer is formed over the IPD and around the plurality of conductive pillars. A shield layer is formed over the IPD, third insulation layer, and conductive pillars. The shield layer is electrically connected to the conductive pillars to shield the IPD from electromagnetic interference.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: February 19, 2019
    Assignee: STATS ChipPAC Pte. Ltd.
    Inventors: Yaojian Lin, Jianmin Fang, Kang Chen, Haijing Cao
  • Patent number: 10192801
    Abstract: A semiconductor device is made with a conductive via formed through a top-side of the substrate. The conductive via extends vertically through less than a thickness of the substrate. An integrated passive device (IPD) is formed over the substrate. A plurality of first conductive pillars is formed over the first IPD. A first semiconductor die is mounted over the substrate. An encapsulant is formed around the first conductive pillars and first semiconductor die. A second IPD is formed over the encapsulant. An interconnect structure is formed over the second IPD. The interconnect structure operates as a heat sink. A portion of a back-side of the substrate is removed to expose the first conductive via. A second semiconductor die is mounted to the back-side of the substrate. The second semiconductor die is electrically connected to the first IPD and first semiconductor die through the conductive via.
    Type: Grant
    Filed: March 20, 2012
    Date of Patent: January 29, 2019
    Assignee: STATS ChipPAC Pte. Ltd.
    Inventors: Yaojian Lin, Jianmin Fang, Kang Chen, Haijing Cao
  • Patent number: 9865482
    Abstract: A semiconductor device is made by providing a temporary carrier for supporting the semiconductor device. An integrated passive device (IPD) is mounted to the temporary carrier using an adhesive. The IPD includes a capacitor and a resistor and has a plurality of through-silicon vias (TSVs). A discrete component is mounted to the temporary carrier using the adhesive. The discrete component includes a capacitor. The IPD and the discrete component are encapsulated using a molding compound. A first metal layer is formed over the molding compound. The first metal layer is connected to the TSVs of the IPD and forms an inductor. The temporary carrier and the adhesive are removed, and a second metal layer is formed over the IPD and the discrete component. The second metal layer interconnects the IPD and the discrete component and forms an inductor. An optional interconnect structure is formed over the second metal layer.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: January 9, 2018
    Assignee: STATS ChipPAC Pte. Ltd.
    Inventors: Yaojian Lin, Jianmin Fang, Kang Chen, Haijing Cao
  • Patent number: 9449925
    Abstract: A semiconductor device has integrated passive circuit elements. A first substrate is formed on a backside of the semiconductor device. The passive circuit element is formed over the insulating layer. The passive circuit element can be an inductor, capacitor, or resistor. A passivation layer is formed over the passive circuit element. A carrier is attached to the passivation layer. The first substrate is removed. A non-silicon substrate is formed over the insulating layer on the backside of the semiconductor device. The non-silicon substrate is made with glass, molding compound, epoxy, polymer, or polymer composite. An adhesive layer is formed between the non-silicon substrate and insulating layer. A via is formed between the insulating layer and first passivation layer. The carrier is removed. An under bump metallization is formed over the passivation layer in electrical contact with the passive circuit element. A solder bump is formed on the under bump metallization.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: September 20, 2016
    Assignee: STATS ChipPAC Pte. Ltd.
    Inventors: Yaojian Lin, Haijing Cao, Qing Zhang, Kang Chen, Jianmin Fang
  • Publication number: 20160197059
    Abstract: A semiconductor device is made by providing a substrate, forming a first insulation layer over the substrate, forming a first conductive layer over the first insulation layer, forming a second insulation layer over the first conductive layer, and forming a second conductive layer over the second insulation layer. A portion of the second insulation layer, first conductive layer, and second conductive layer form an integrated passive device (IPD). The IPD can be an inductor, capacitor, or resistor. A plurality of conductive pillars is formed over the second conductive layer. One conductive pillar removes heat from the semiconductor device. A third insulation layer is formed over the IPD and around the plurality of conductive pillars. A shield layer is formed over the IPD, third insulation layer, and conductive pillars. The shield layer is electrically connected to the conductive pillars to shield the IPD from electromagnetic interference.
    Type: Application
    Filed: March 14, 2016
    Publication date: July 7, 2016
    Applicant: STATS ChipPAC, Ltd.
    Inventors: Yaojian Lin, Jianmin Fang, Kang Chen, Haijing Cao
  • Patent number: 9349723
    Abstract: A flip chip semiconductor device has a substrate with a plurality of active devices formed thereon. A passive device is formed on the substrate by depositing a first conductive layer over the substrate, depositing an insulating layer over the first conductive layer, and depositing a second conductive layer over the insulating layer. The passive device is a metal-insulator-metal capacitor. The deposition of the insulating layer and first and second conductive layers is performed without photolithography. An under bump metallization (UBM) layer is formed on the substrate in electrical contact with the plurality of active devices. A solder bump is formed over the UBM layer. The passive device can also be a resistor by depositing a resistive layer over the first conductive layer and depositing a third conductive layer over the resistive layer. The passive device electrically contacts the solder bump.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: May 24, 2016
    Assignee: STATS ChipPAC, Ltd.
    Inventors: Yaojian Lin, Haijing Cao, Qing Zhang, Robert C. Frye
  • Patent number: 9337141
    Abstract: A semiconductor device has a substrate with an inductor formed on its surface. First and second contact pads are formed on the substrate. A passivation layer is formed over the substrate and first and second contact pads. A protective layer is formed over the passivation layer. The protective layer is removed over the first contact pad, but not from the second contact pad. A conductive layer is formed over the first contact pad. The conductive layer is coiled on the surface of the substrate to produce inductive properties. The formation of the conductive layer involves use of a wet etchant. The second contact pad is protected from the wet etchant by the protective layer. The protective layer is removed from the second contact pad after forming the conductive layer over the first contact pad. An external connection is formed on the second contact pad.
    Type: Grant
    Filed: September 18, 2012
    Date of Patent: May 10, 2016
    Assignee: STATS ChipPAC, Ltd.
    Inventors: Yaojian Lin, Haijing Cao, Qing Zhang
  • Patent number: 9324700
    Abstract: A semiconductor device is made by providing a substrate, forming a first insulation layer over the substrate, forming a first conductive layer over the first insulation layer, forming a second insulation layer over the first conductive layer, and forming a second conductive layer over the second insulation layer. A portion of the second insulation layer, first conductive layer, and second conductive layer form an integrated passive device (IPD). The IPD can be an inductor, capacitor, or resistor. A plurality of conductive pillars is formed over the second conductive layer. One conductive pillar removes heat from the semiconductor device. A third insulation layer is formed over the IPD and around the plurality of conductive pillars. A shield layer is formed over the IPD, third insulation layer, and conductive pillars. The shield layer is electrically connected to the conductive pillars to shield the IPD from electromagnetic interference.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: April 26, 2016
    Assignee: STATS ChipPAC, Ltd.
    Inventors: Yaojian Lin, Jianmin Fang, Kang Chen, Haijing Cao
  • Patent number: 9269598
    Abstract: A semiconductor device has a first conductive layer formed over a sacrificial substrate. A first integrated passive device (IPD) is formed in a first region over the first conductive layer. A conductive pillar is formed over the first conductive layer. A high-resistivity encapsulant greater than 1.0 kohm-cm is formed over the first IPD to a top surface of the conductive pillar. A second IPD is formed over the encapsulant. The first encapsulant has a thickness of at least 50 micrometers to vertically separate the first and second IPDs. An insulating layer is formed over the second IPD. The sacrificial substrate is removed and a second semiconductor die is disposed on the first conductive layer. A first semiconductor die is formed in a second region over the substrate. A second encapsulant is formed over the second semiconductor die and a thermally conductive layer is formed over the second encapsulant.
    Type: Grant
    Filed: August 7, 2012
    Date of Patent: February 23, 2016
    Assignee: STATS ChipPAC, Ltd.
    Inventors: Yaojian Lin, Jianmin Fang, Kang Chen, Haijing Cao
  • Patent number: 9240384
    Abstract: A semiconductor device has a first conductive layer formed over a substrate. A first insulating layer is formed over the substrate and first conductive layer. A second conductive layer is formed over the first conductive layer and first insulating layer. A second insulating layer is formed over the first insulating layer and second conductive layer. The second insulating layer has a sidewall between a surface of the second insulating material and surface of the second conductive layer. A protective layer is formed over the second insulating layer and surface of the second conductive layer. The protective layer follows a contour of the surface and sidewall of the second insulating layer and second conductive layer. A bump is formed over the surface of the second conductive layer and a portion of the protective layer adjacent to the second insulating layer. The protective layer protects the second insulating layer.
    Type: Grant
    Filed: September 17, 2012
    Date of Patent: January 19, 2016
    Assignee: STATS ChipPAC, Ltd.
    Inventors: Yaojian Lin, Qing Zhang, Haijing Cao
  • Patent number: 9184103
    Abstract: A semiconductor device includes a first conductive layer and conductive pillars disposed over the first conductive layer and directly contacting the first conductive layer. The semiconductor device includes an Integrated Passive Device (IPD) mounted to the first conductive layer such that the IPD is disposed between the conductive pillars. The IPD is self-aligned to the first conductive layer, and includes a metal-insulator-metal capacitor disposed over a first substrate and a wound conductive layer forming an inductor disposed over the first substrate. The semiconductor device includes a discrete capacitor mounted over the first conductive layer. The discrete capacitor is electrically connected to one of the conductive pillars. The semiconductor device includes an encapsulant disposed around the IPD, discrete capacitor, and conductive pillars, a first insulation layer disposed over the encapsulant and conductive pillars, and a second conductive layer disposed over the first insulating layer.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: November 10, 2015
    Assignee: STATS ChipPAC, Ltd.
    Inventors: Yaojian Lin, Haijing Cao, Kang Chen, Jianmin Fang
  • Patent number: 8975111
    Abstract: A method of manufacturing a semiconductor device includes providing a wafer for supporting the semiconductor device. An insulation layer is disposed over a top surface of the wafer. The method includes forming a first interconnect structure over the top surface of the wafer with temperatures in excess of 200° C., forming a metal pillar over the wafer in electrical contact with the first interconnect structure, connecting a semiconductor component to the first interconnect structure, and forming encapsulant over the semiconductor component. The encapsulant is etched to expose a portion of the metal pillar. A buffer layer is optionally formed over the encapsulant. The method includes forming a second interconnect structure over the encapsulant in electrical contact with the metal pillar with temperatures below 200° C., and removing a portion of a backside of the wafer opposite the top surface of the wafer.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: March 10, 2015
    Assignee: STATS ChipPAC, Ltd.
    Inventors: Yaojian Lin, Haijing Cao
  • Patent number: 8669637
    Abstract: An integrated passive device system is disclosed including forming a first dielectric layer over a semiconductor substrate, depositing a metal capacitor layer on the first dielectric layer, forming a second dielectric layer over the metal capacitor layer, and depositing a metal layer over the second dielectric layer for forming the integrated capacitor, an integrated resistor, an integrated inductor, or a combination thereof.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: March 11, 2014
    Assignee: Stats ChipPac Ltd.
    Inventors: Yaojian Lin, Haijing Cao, Robert Charles Frye, Pandi Chelvam Marimuthu
  • Patent number: 8592311
    Abstract: A semiconductor wafer contains a substrate having a plurality of active devices formed thereon. An analog circuit is formed on the substrate. The analog circuit can be an inductor, metal-insulator-metal capacitor, or resistor. The inductor is made with copper. A through substrate via (TSV) is formed in the substrate. A conductive material is deposited in the TSV in electrical contact with the analog circuit. An under bump metallization layer is formed on a backside of the substrate in electrical contact with the TSV. A solder material is deposited on the UBM layer. The solder material is reflowed to form a solder bump. A wire bond is formed on a top surface of the substrate. A redistribution layer is formed between the TSV and UBM. The analog circuit electrically connects through the TSV to the solder bump on the back side of the substrate.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: November 26, 2013
    Assignee: STATS ChipPAC, Ltd.
    Inventors: Yaojian Lin, Haijing Cao, Qing Zhang, Kang Chen, Jianmin Fang
  • Patent number: 8445323
    Abstract: A semiconductor device includes an IPD structure, a first semiconductor die mounted to the IPD structure with a flipchip interconnect, and a plurality of first conductive posts that are disposed adjacent to the first semiconductor die. The semiconductor device further includes a first molding compound that is disposed over the first conductive posts and first semiconductor die, a core structure bonded to the first conductive posts over the first semiconductor die, and a plurality of conductive TSVs disposed in the core structure. The semiconductor device further includes a plurality of second conductive posts that are disposed over the core structure, a second semiconductor die mounted over the core structure, and a second molding compound disposed over the second conductive posts and the second semiconductor die. The second semiconductor die is electrically connected to the core structure.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: May 21, 2013
    Assignee: STATS ChipPAC, Ltd.
    Inventors: Yaojian Lin, Jianmin Fang, Kang Chen, Haijing Cao
  • Patent number: 8409970
    Abstract: A semiconductor device has integrated passive circuit elements. A first substrate is formed on a backside of the semiconductor device. The passive circuit element is formed over the insulating layer. The passive circuit element can be an inductor, capacitor, or resistor. A passivation layer is formed over the passive circuit element. A carrier is attached to the passivation layer. The first substrate is removed. A non-silicon substrate is formed over the insulating layer on the backside of the semiconductor device. The non-silicon substrate is made with glass, molding compound, epoxy, polymer, or polymer composite. An adhesive layer is formed between the non-silicon substrate and insulating layer. A via is formed between the insulating layer and first passivation layer. The carrier is removed. An under bump metallization is formed over the passivation layer in electrical contact with the passive circuit element. A solder bump is formed on the under bump metallization.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: April 2, 2013
    Assignee: STATS ChipPAC, Ltd.
    Inventors: Yaojian Lin, Haijing Cao, Qing Zhang, Kang Chen, Jianmin Fang
  • Patent number: 8395053
    Abstract: A circuit system comprising: forming a lower electrode over a substrate; forming a resistive film over the lower electrode; forming a multi-layered insulating stack over a portion of the resistive film; and forming an upper electrode over a portion of the multi-layered insulating stack.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: March 12, 2013
    Assignee: Stats Chippac Ltd.
    Inventors: Yaojian Lin, Haijing Cao, Qing Zhang
  • Patent number: 8389396
    Abstract: A method for manufacture of an integrated circuit package system includes: providing an integrated circuit die having a contact pad; forming a protection cover over the contact pad; forming a passivation layer having a first opening over the protection cover with the first opening exposing the protection cover; developing a conductive layer over the passivation layer; forming a pad opening in the protection cover for exposing the contact pad having the conductive layer partially removed; and an interconnect directly on the contact pad and only adjacent to the protection cover and the passivation layer.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: March 5, 2013
    Assignee: Stats Chippac Ltd.
    Inventors: Yaojian Lin, Haijing Cao, Qing Zhang
  • Publication number: 20130015554
    Abstract: A semiconductor wafer contains a substrate having a plurality of active devices formed thereon. An analog circuit is formed on the substrate. The analog circuit can be an inductor, metal-insulator-metal capacitor, or resistor. The inductor is made with copper. A through substrate via (TSV) is formed in the substrate. A conductive material is deposited in the TSV in electrical contact with the analog circuit. An under bump metallization layer is formed on a backside of the substrate in electrical contact with the TSV. A solder material is deposited on the UBM layer. The solder material is reflowed to form a solder bump. A wire bond is formed on a top surface of the substrate. A redistribution layer is formed between the TSV and UBM. The analog circuit electrically connects through the TSV to the solder bump on the back side of the substrate.
    Type: Application
    Filed: September 13, 2012
    Publication date: January 17, 2013
    Applicant: STATS ChipPAC, Ltd.
    Inventors: Yaojian Lin, Haijing Cao, Qing Zhang, Kang Chen, Jianmin Fang
  • Publication number: 20120292738
    Abstract: A semiconductor device has a first conductive layer formed over a sacrificial substrate. A first integrated passive device (IPD) is formed in a first region over the first conductive layer. A conductive pillar is formed over the first conductive layer. A high-resistivity encapsulant greater than 1.0 kohm-cm is formed over the first IPD to a top surface of the conductive pillar. A second IPD is formed over the encapsulant. The first encapsulant has a thickness of at least 50 micrometers to vertically separate the first and second IPDs. An insulating layer is formed over the second IPD. The sacrificial substrate is removed and a second semiconductor die is disposed on the first conductive layer. A first semiconductor die is formed in a second region over the substrate. A second encapsulant is formed over the second semiconductor die and a thermally conductive layer is formed over the second encapsulant.
    Type: Application
    Filed: August 7, 2012
    Publication date: November 22, 2012
    Applicant: STATS CHIPPAC, LTD.
    Inventors: Yaojian Lin, Jianmin Fang, Kang Chen, Haijing Cao