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).

  • Publication number: 20100059855
    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: Application
    Filed: September 9, 2008
    Publication date: March 11, 2010
    Applicant: STATS CHIPPAC, LTD.
    Inventors: Yaojian Lin, Jianmin Fang, Kang Chen, Haijing Cao
  • Publication number: 20100059854
    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: September 5, 2008
    Publication date: March 11, 2010
    Applicant: STATS CHIPPAC, LTD.
    Inventors: Yaojian Lin, Jianmin Fang, Kang Chen, Haijing Cao
  • Publication number: 20100059853
    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: September 5, 2008
    Publication date: March 11, 2010
    Applicant: STATS CHIPPAC, LTD.
    Inventors: Yaojian Lin, Jianmin Fang, Kang Chen, Haijing Cao
  • Publication number: 20090230542
    Abstract: A semiconductor device is made by providing a sacrificial substrate, forming a first insulating layer over the sacrificial substrate, forming a first passivation layer over the first insulating layer, forming a second insulating layer over the first passivation layer, forming an integrated passive device over the second insulating layer, forming a wafer support structure over the integrated passive device, removing the sacrificial substrate to expose the first insulating layer after forming the wafer support structure, and forming an interconnect structure over the first insulating layer in electrical contact with the integrated passive device. The integrated passive device includes an inductor, capacitor, or resistor. The sacrificial substrate is removed by mechanical grinding and wet etching. The wafer support structure can be glass, ceramic, silicon, or molding compound.
    Type: Application
    Filed: March 13, 2008
    Publication date: September 17, 2009
    Applicant: STATS CHIPPAC, LTD.
    Inventors: Yaojian Lin, Kang Chen, Haijing Cao, Qing Zhang, Jianmin Fang
  • Publication number: 20090224391
    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: Application
    Filed: March 4, 2008
    Publication date: September 10, 2009
    Applicant: STATS CHIPPAC, LTD.
    Inventors: Yaojian Lin, Haijing Cao
  • Publication number: 20090155959
    Abstract: A method of manufacturing a semiconductor device includes providing a substrate with an insulation layer disposed on a top surface of the substrate, forming a passive device over the top surface of the substrate, removing the substrate, depositing an insulating polymer film layer over the insulation layer, and depositing a metal layer over the insulating polymer film layer. A solder mask can be formed over the metal layer. A conformal metal layer can then be formed over the solder mask. A notch can be formed in the insulation layer to enhance the connection between the insulating polymer film layer and the insulation layer. Additional semiconductor die can be electrically connected to the passive device. The substrate is removed by removing a first amount of the substrate using a back grind process, and then removing a second amount of the substrate using a wet dry, dry etch, or chemical-mechanical planarization process.
    Type: Application
    Filed: December 18, 2007
    Publication date: June 18, 2009
    Applicant: STATS CHIPPAC, LTD.
    Inventors: Yaojian Lin, Haijing Cao, Qing Zhang, Kang Chen, Jianmin Fang
  • Publication number: 20090140421
    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: Application
    Filed: December 3, 2007
    Publication date: June 4, 2009
    Applicant: STATS CHIPPAC, LTD.
    Inventors: Yaojian Lin, Haijing Cao, Qing Zhang, Kang Chen, Jianmin Fang
  • Publication number: 20090140381
    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: November 29, 2007
    Publication date: June 4, 2009
    Applicant: STATS CHIPPAC, LTD.
    Inventors: Yaojian Lin, Haijing Cao, Qing Zhang Zhang, Kang Chen, Jianmin Fang
  • Publication number: 20090117702
    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. An insulating layer is formed over the passivation layer. The insulating layer is removed over the first contact pad, but not from the second contact pad. A metal layer is formed over the first contact pad. The metal layer is coiled on the surface of the substrate to produce inductive properties. The formation of the metal layer involves use of a wet etchant. The second contact pad is protected from the wet etchant by the insulating layer. The insulating layer is removed from the second contact pad after forming the metal layer over the first contact pad. An external connection is formed on the second contact pad.
    Type: Application
    Filed: November 7, 2007
    Publication date: May 7, 2009
    Applicant: STATS CHIPPAC, LTD.
    Inventors: Yaojian LIN, Haijing CAO, Qing ZHANG
  • Publication number: 20090004504
    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: Application
    Filed: June 27, 2007
    Publication date: January 1, 2009
    Inventors: Yaojian Lin, Haijing Cao, Qing Zhang
  • Publication number: 20080237880
    Abstract: An integrated circuit package system is provided including 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, and forming a pad opening in the protection cover for exposing the contact pad.
    Type: Application
    Filed: March 30, 2007
    Publication date: October 2, 2008
    Inventors: Yaojian Lin, Haijing Cao, Qing Zhang
  • Publication number: 20080230902
    Abstract: A solder bump is formed on a high-topography, electroplated copper pad integrating a first and second passivation layer. A sacrifice layer is deposited over the second passivation layer. The sacrifice layer is lithographically patterned. A via is etched in the sacrifice layer. A solder bump is formed in the via. A portion of the sacrifice layer is removed using the solder bump as a mask. A semiconductor device includes a substrate, an input/output (I/O) pad disposed over the substrate, a first passivation layer disposed over a portion of the I/O pad, a first conductive layer disposed over the first passivation layer, a second passivation layer disposed over the first conductive layer, a sacrifice layer disposed over the second passivation layer, the sacrifice layer having a via, and a solder bump formed in the via, the solder bump used as a mask to remove a portion of the sacrifice layer.
    Type: Application
    Filed: March 21, 2007
    Publication date: September 25, 2008
    Applicant: STATS CHIPPAC, LTD.
    Inventors: Yaojian LIN, Qing ZHANG, Haijing CAO
  • Publication number: 20080153245
    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: Application
    Filed: December 18, 2007
    Publication date: June 26, 2008
    Applicant: STATS ChipPAC, Ltd.
    Inventors: Yaojian Lin, Haijing Cao, Qing Zhang, Robert C. Frye
  • Publication number: 20080150161
    Abstract: A flip chip semiconductor device has a substrate with a plurality of active devices formed thereon. A contact pad is formed on the substrate in electrical contact with the plurality of active devices. A passivation layer is formed over the substrate and intermediate conduction layer. An adhesive layer is formed over the passivation layer. A barrier layer is formed over the adhesive layer. A wetting layer is formed over the barrier layer. The barrier layer and wetting layer in a first region are removed, while the barrier layer, wetting layer, and adhesive layer in a second region are maintained. The adhesive layer over the passivation layer in the first region are maintained until the solder bumps are formed. By keeping the adhesive layer over the passivation layer until after formation of the solder bumps, less cracking occurs in the passivation layer.
    Type: Application
    Filed: November 1, 2007
    Publication date: June 26, 2008
    Applicant: STATS CHIPPAC, LTD.
    Inventors: Yaojian Lin, Haijing Cao, Qing Zhang
  • Patent number: 7381634
    Abstract: An integrated circuit system provides a precursor for an integrated wire bond and flip chip structure. The precursor has a plurality of contact pads thereon. A layer of titanium is deposited on the precursor. A layer of nickel-vanadium is deposited on the layer of titanium. A layer of copper is deposited on the layer of nickel-vanadium. A mask is formed on at least a portion of the layer of copper. Portions of the layers of copper and nickel-vanadium not protected by the mask are removed to expose portions of the layer of titanium. The exposed portions of the layer of titanium are etched with an etching solution consisting of an etchant, a viscosity modifier, and an oxidizer.
    Type: Grant
    Filed: April 13, 2005
    Date of Patent: June 3, 2008
    Assignee: Stats Chippac Ltd.
    Inventors: Yaojian Lin, Byung Tai Do, Wan Lay Looi, Haijing Cao
  • Publication number: 20070114639
    Abstract: An integrated circuit package system includes an integrated circuit, and forming a patterned redistribution pad over the integrated circuit.
    Type: Application
    Filed: November 2, 2006
    Publication date: May 24, 2007
    Applicant: STATS ChipPAC Ltd.
    Inventors: Yaojian Lin, Romeo Alvarez, Haijing Cao, Wan Lay Looi
  • Publication number: 20070114634
    Abstract: An integrated passive device system is disclosed including forming a first dielectric layer over a semiconductor substrate, depositing a metal capacitor layer and a silicide layer on the first dielectric layer, forming a second dielectric layer over the metal capacitor layer and the silicide 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: Application
    Filed: October 27, 2006
    Publication date: May 24, 2007
    Applicant: STATS CHIPPAC LTD.
    Inventors: Yaojian Lin, Haijing Cao, Robert Frye, Pandi Marimuthu
  • Publication number: 20070108615
    Abstract: An integrated circuit system is provided including forming a substrate, forming a first contact having multiple conductive layers over the substrate and a layer of the multiple conductive layers on other layers of the multiple conductive layers, forming a dielectric layer on the first contact, and forming a second contact on the dielectric layer and over the first contact.
    Type: Application
    Filed: September 1, 2006
    Publication date: May 17, 2007
    Applicant: STATS ChipPAC Ltd.
    Inventors: Yaojian Lin, Haijing Cao, Wan Lay Looi, Eng Seng Lim
  • Publication number: 20060231948
    Abstract: An integrated circuit system provides a precursor for an integrated wire bond and flip chip structure. The precursor has a plurality of contact pads thereon. A layer of titanium is deposited on the precursor. A layer of nickel-vanadium is deposited on the layer of titanium. A layer of copper is deposited on the layer of nickel-vanadium. A mask is formed on at least a portion of the layer of copper. Portions of the layers of copper and nickel-vanadium not protected by the mask are removed to expose portions of the layer of titanium. The exposed portions of the layer of titanium are etched with an etching solution consisting of an etchant, a viscosity modifier, and an oxidizer.
    Type: Application
    Filed: April 13, 2005
    Publication date: October 19, 2006
    Applicant: STATS CHIPPAC LTD.
    Inventors: Yaojian Lin, Byung Tai Do, Wan Lay Looi, Haijing Cao