Patents by Inventor Pandi Chelvam Marimuthu

Pandi Chelvam Marimuthu 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: 20100140815
    Abstract: A semiconductor device has a first interconnect structure formed over a first side of a substrate. A semiconductor die is mounted to the first interconnect structure. An encapsulant is deposited over the semiconductor die and first interconnect structure for structural support. A portion of a second side of the substrate, opposite the first side of the substrate, is removed to reduce its thickness. The encapsulant maintains substrate robustness during thinning process. A TSV is formed through the second side of the substrate to the first interconnect structure. A second interconnect structure is formed in the TSV. The TSV has a first insulating layer formed over the second side of the substrate and first conductive layer formed over the first insulating layer and into the TSV. The second interconnect structure has a second conductive layer formed over the first conductive layer in an area away from the TSV.
    Type: Application
    Filed: December 10, 2008
    Publication date: June 10, 2010
    Applicant: STATS ChipPAC, Ltd.
    Inventors: Pandi Chelvam Marimuthu, Nathapong Suthiwongsunthorn, Kock Liang Heng
  • Publication number: 20100133704
    Abstract: A semiconductor device is fabricated by providing a carrier for supporting the semiconductor device. A first semiconductor die is mounted to the carrier. The first semiconductor die has a contact pad. A first dummy die is mounted to the carrier. The first dummy die has a through-silicon via (TSV). The first semiconductor die and the first dummy die are encapsulated using a wafer molding material. A first interconnect structure is formed over the first semiconductor die and the first dummy die. The first interconnect structure is connected to the contact pad of the first semiconductor die and the TSV of the first dummy die. The carrier is removed and a second interconnect structure is formed over the first semiconductor die and the first dummy die. The second interconnect structure is connected to the TSV of the first dummy die. A semiconductor package is connected to the second interconnect structure.
    Type: Application
    Filed: December 1, 2008
    Publication date: June 3, 2010
    Applicant: STATS CHIPPAC, LTD.
    Inventors: Pandi Chelvam Marimuthu, Nathapong Suthiwongsunthorn, Il Kwon Shim, Kock Liang Heng
  • Patent number: 7723225
    Abstract: A solder bump confinement system is provided including providing a substrate, patterning a contact material on the substrate, depositing an inner passivation layer over the contact material and the substrate, forming an under bump material defining layer over the contact material by sputtering, and forming a system interconnect over the contact material and on the under bump material defining layer.
    Type: Grant
    Filed: February 6, 2007
    Date of Patent: May 25, 2010
    Assignee: Stats Chippac Ltd.
    Inventors: Yaojian Lin, Pandi Chelvam Marimuthu, Rajendra D. Pendse
  • Publication number: 20090309235
    Abstract: A semiconductor device has first and second wafers having bond pads. The bond pad of the second wafer is connected to the bond pad of the first wafer using a conductive adhesive. A first interconnect structure is formed within the second wafer and includes a first via formed in a back surface of the second wafer to expose the bond pad of the second wafer. A first metal layer is formed conformally over the first via and is in electrical contact with the bond pad of the second wafer. A third wafer is mounted over the second wafer by connecting a bond pad formed over a front surface of the third wafer to the first metal layer. A second interconnect structure is formed over a backside of the third wafer opposite the front surface. The second interconnect structure is electrically connected to the first metal layer.
    Type: Application
    Filed: June 11, 2008
    Publication date: December 17, 2009
    Applicant: STATS CHIPPAC, LTD.
    Inventors: Nathapong Suthiwongsunthorn, Pandi Chelvam Marimuthu
  • Publication number: 20090243083
    Abstract: A semiconductor device has a wafer for supporting the device and a conductive layer formed over a top surface of the wafer. A carrier wafer is permanently bonded over the conductive layer. Within the wafer and the carrier wafer, an interconnect structure is formed. The interconnect structure includes a first via formed in the wafer exposing the conductive layer, a second via formed in the carrier wafer exposing the conductive layer, a first metal layer deposited over the first via, the first metal layer in electrical contact with the conductive layer, and a second metal layer deposited over the second via, the second metal layer in electrical contact with the conductive layer. First and second passivation layers are deposited over the first and second metal layers. The first or second passivation layer has an etched portion to expose a portion of the first metal layer or second metal layer.
    Type: Application
    Filed: March 25, 2008
    Publication date: October 1, 2009
    Applicant: STATS CHIPPAC, LTD.
    Inventors: Byung Joon Han, Nathapong Suthiwongsunthorn, Pandi Chelvam Marimuthu, Kock Liang Heng
  • Patent number: 7554179
    Abstract: A multi-leadframe semiconductor package and method of manufacture includes a first leadframe having a die pad and a plurality of contact leads around the periphery of the die pad. A die is attached to the die pad and electrically connected to the plurality of contact leads. A heat spreader leadframe having a heat spreader and a plurality of terminal leads around the periphery of the heat spreader is provided. The die pad is attached to the heat spreader, and the plurality of contact leads is attached to the plurality of terminal leads.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: June 30, 2009
    Assignee: Stats Chippac Ltd.
    Inventors: Il Kwon Shim, Seng Guan Chow, Jeffrey D. Punzalan, Pandi Chelvam Marimuthu
  • Publication number: 20090032975
    Abstract: A semiconductor wafer contains a plurality of semiconductor die. The wafer has contact pads formed over its surface. A passivation layer is formed over the wafer. A stress buffer layer is formed over the passivation layer. The stress buffer layer is patterned to expose the contact pads. A metal layer is deposited over the stress buffer layer. The metal layer is a common voltage bus for the semiconductor device in electrical contact with the contact pads. An adhesion layer, barrier layer, and seed layer is formed over the wafer in electrical contact with the contact pads. The metal layer is mounted to the seed layer. Solder bumps or other interconnect structures are formed over the metal layer. A second passivation layer is formed over the metal layer. In an alternate embodiment, a wirebondable layer can be deposited over the metal layer and wirebonds connected to the metal layer.
    Type: Application
    Filed: July 30, 2008
    Publication date: February 5, 2009
    Applicant: STATS CHIPPAC, LTD.
    Inventors: Byung Tai Do, Stephen A. Murphy, Yaojian Lin, Heap Hoe Kuan, Pandi Chelvam Marimuthu, Hin Hwa Goh
  • Publication number: 20080185737
    Abstract: An integrated circuit system is provided including forming a wire ball on a bond wire; forming a shaped ball from the wire ball; and attaching the shaped ball on an integrated circuit die.
    Type: Application
    Filed: February 1, 2008
    Publication date: August 7, 2008
    Inventor: Pandi Chelvam Marimuthu
  • Patent number: 7378300
    Abstract: An integrated circuit package system is provided including forming a leadframe structure having a encapsulant space provided predominantly inside the leadframe structure and attaching a die to the leadframe structure in the encapsulant space inside the leadframe structure. The system further includes electrically connecting the die to the leadframe structure and injecting encapsulant into the encapsulant space to form the integrated circuit package system.
    Type: Grant
    Filed: September 22, 2005
    Date of Patent: May 27, 2008
    Assignee: Stats Chippac Ltd.
    Inventors: Pandi Chelvam Marimuthu, Il Kwon Shim
  • Publication number: 20080054421
    Abstract: An integrated circuit package system is provided including forming a first external interconnect and a die paddle having a slot, forming an inner terminal from a peripheral region of the die paddle, connecting an integrated circuit die and the peripheral region for ground connection, and molding through the slot.
    Type: Application
    Filed: August 23, 2006
    Publication date: March 6, 2008
    Applicant: STATS ChipPAC Ltd.
    Inventors: Antonio B. Dimaano, Pandi Chelvam Marimuthu
  • Publication number: 20080029847
    Abstract: An integrated circuit package system is provided including forming a wafer having a back side and an active side, forming a recess in the wafer from the back side, forming a cover in the recess, and singulating the wafer at the recess filled with the cover.
    Type: Application
    Filed: August 4, 2006
    Publication date: February 7, 2008
    Applicant: STATS CHIPPAC LTD.
    Inventors: Dennis Guillermo, Sheila Rima C. Magno, Ma. Shirley Asoy, Pandi Chelvam Marimuthu
  • Publication number: 20070184578
    Abstract: A solder bump confinement system is provided including providing a substrate, patterning a contact material on the substrate, depositing an inner passivation layer over the contact material and the substrate, forming an under bump material defining layer over the contact material by sputtering, and forming a system interconnect over the contact material and on the under bump material defining layer.
    Type: Application
    Filed: February 6, 2007
    Publication date: August 9, 2007
    Inventors: Yaojian Lin, Pandi Chelvam Marimuthu, Rajendra D. Pendse