Patents by Inventor Xiangdong Chen

Xiangdong Chen 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: 8570811
    Abstract: According to one embodiment, a one-time programmable (OTP) device comprises a memory FinFET in parallel with a sensing FinFET. The memory FinFET and the sensing FinFET share a common source region, a common drain region, and a common channel region. The memory FinFET is programmed by having a ruptured gate dielectric, resulting in the sensing FinFET having an altered threshold voltage and an altered drain current. A method for utilizing such an OTP device comprises applying a programming voltage for rupturing the gate dielectric of the memory FinFET thereby achieving a programmed state of the memory FinFET, and detecting by the sensing FinFET the altered threshold voltage and the altered drain current due to the programmed state of the memory FinFET.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: October 29, 2013
    Assignee: Broadcom Corporation
    Inventors: Wei Xia, Xiangdong Chen
  • Patent number: 8558300
    Abstract: According to one exemplary embodiment, a method for fabricating a flash memory cell in a semiconductor die includes forming a control gate stack overlying a floating gate stack in a memory region of a substrate, where the floating gate stack includes a floating gate overlying a portion of a dielectric one layer. The floating gate includes a portion of a metal one layer and the dielectric one layer includes a first high-k dielectric material. The control gate stack can include a control gate including a portion of a metal two layer, where the metal one layer can include a different metal than the metal two layer.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: October 15, 2013
    Assignee: Broadcom Corporation
    Inventors: Wei Xia, Xiangdong Chen, Frank Hui
  • Publication number: 20130256766
    Abstract: Process for enhancing strain in a channel with a stress liner, spacer, process for forming integrated circuit and integrated circuit. A first spacer composed of a first oxide and first nitride layer is applied to a gate electrode on a substrate, and a second spacer composed of a second oxide and second nitride layer is applied. Deep implanting of source and drain in the substrate occurs, and removal of the second nitride, second oxide, and first nitride layers.
    Type: Application
    Filed: May 20, 2013
    Publication date: October 3, 2013
    Applicant: International Business Machines Corporation
    Inventors: Atul C. AJMERA, Christopher V. BAIOCCO, Xiangdong CHEN, Wenzhi GAO, Young W. TEH
  • Publication number: 20130221500
    Abstract: There are disclosed herein various implementations of a system-in-package with integrated socket. In one such implementation, the system-in-package includes a first active die having a first plurality of electrical connectors on a top surface of the first active die, an interposer situated over the first active die, and a second active die having a second plurality of electrical connectors on a bottom surface of the second active die. The interposer is configured to selectively couple at least one of the first plurality of electrical connectors to at least one of the second plurality of electrical connectors. In addition, a socket encloses the first and second active dies and the interposer, the socket being electrically coupled to at least one of the first active die, the second active die, and the interposer.
    Type: Application
    Filed: February 24, 2012
    Publication date: August 29, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Sam Ziqun Zhao, Kevin Kunzhong Hu, Sampath K. V. Karikalan, Rezaur Rahman Khan, Pieter Vorenkamp, Xiangdong Chen
  • Publication number: 20130221499
    Abstract: There are disclosed herein various implementations of a shield interposer situated between a top active die and a bottom active die for shielding the active dies from electromagnetic noise. One implementation includes an interposer dielectric layer, a through-silicon via (TSV) within the interposer dielectric layer, and an electromagnetic shield. The TSV connects the electromagnetic shield to a first fixed potential. The electromagnetic shield may include a grid of conductive layers laterally extending across the shield interposer. The shield interposer may also include another electromagnetic shield connected to another fixed potential.
    Type: Application
    Filed: February 27, 2012
    Publication date: August 29, 2013
    Applicant: Broadcom Corporation
    Inventors: Sampath K.V. Karikalan, Kevin Kunzhong Hu, Sam Ziqun Zhao, Rezaur Rahman Khan, Pieter Vorenkamp, Xiangdong Chen
  • Publication number: 20130221525
    Abstract: There are disclosed herein various implementations of semiconductor packages having a selectively conductive film interposer. In one such implementation, a semiconductor package includes a first active die having a first plurality of electrical connectors on a top surface of the first active die, a selectively conductive film interposer situated over the first active die, and a second active die having a second plurality of electrical connectors on a bottom surface of the second active die. The selectively conductive film interposer may be configured to serve as an interposer and to selectively couple at least one of the first plurality of electrical connectors to at least one of the second plurality of electrical connectors.
    Type: Application
    Filed: February 24, 2012
    Publication date: August 29, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Sam Ziqun Zhao, Kevin Kunzhong Hu, Sampath K. V. Karikalan, Rezaur Rahman Khan, Pieter Vorenkamp, Xiangdong Chen
  • Publication number: 20130221506
    Abstract: One implementation of present disclosure includes a semiconductor package stack. The semiconductor package stack includes an upper package coupled to a lower package by a plurality of solder balls. The semiconductor package stack also includes a lower active die situated in a lower package substrate in the lower package. The lower active die is thermally coupled to a heat spreader in the upper package by a thermal interface material. An upper active die is situated in an upper package substrate in the upper package, the upper package substrate being situated over the heat spreader. The thermal interface material can include an array of aligned carbon nanotubes within a filler material. The heat spreader can include at least one layer of metal or metal alloy. Furthermore, the heat spreader can be connected to ground or a DC voltage source. The plurality of solder balls can be situated under the heat spreader.
    Type: Application
    Filed: February 24, 2012
    Publication date: August 29, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Sam Ziqun Zhao, Rezaur Rahman Khan, Kevin Kunzhong Hu, Sampath K. V. Karikalan, Pieter Vorenkamp, Xiangdong Chen
  • Patent number: 8502320
    Abstract: A vertically stacked, planar junction Zener diode is concurrently formed with epitaxially grown FET raised S/D terminals. The structure and process of the Zener diode are compatible with Gate-Last high-k FET structures and processes. Lateral separation of diode and transistor structures is provided by modified STI masking. No additional photolithography steps are required. In some embodiments, the non-junction face of the uppermost diode terminal is silicided with nickel to additionally perform as a copper diffusion barrier.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: August 6, 2013
    Assignee: Broadcom Corporation
    Inventors: Wei Xia, Xiangdong Chen
  • Publication number: 20130193996
    Abstract: An exemplary implementation of the present disclosure includes a testable semiconductor package that includes an active die having interface contacts and dedicated testing contacts. An interposer is situated adjacent a bottom surface of the active die, the interposer providing electrical connections between the interface contacts and a bottom surface of the testable semiconductor package. At least one conductive medium provides electrical connection between at least one of the dedicated testing contacts and a top surface of the testable semiconductor package. The at least one conductive medium can be coupled to a package-top testing connection, which may include a solder ball.
    Type: Application
    Filed: January 31, 2012
    Publication date: August 1, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Sam Ziqun Zhao, Kevin Kunzhong Hu, Sampath K.V. Karikalan, Rezaur Rahman Khan, Pieter Vorenkamp, Xiangdong Chen
  • Publication number: 20130193587
    Abstract: There are disclosed herein various implementations of semiconductor packages having an interposer configured for magnetic signaling. One exemplary implementation includes a die transmit pad in an active die for transmitting a magnetic signal corresponding to a die electrical signal produced by the active die, and an interposer magnetic tunnel junction (MTJ) pad in the interposer for receiving the magnetic signal. A sensing circuit is coupled to the interposer MTJ pad for producing a receive electrical signal corresponding to the magnetic signal. In one implementation, the sensing circuit is configured to sense a resistance of the interposer MTJ pad and to produce the receive electrical signal according to the sensed resistance.
    Type: Application
    Filed: January 30, 2012
    Publication date: August 1, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Xiangdong Chen, Sam Ziqun Zhao, Kevin Kunzhong Hu, Sampath K. V. Karikalan, Rezaur Rahman Khan, Pieter Vorenkamp
  • Patent number: 8497564
    Abstract: According to an exemplary embodiment, a method for fabricating a decoupling composite capacitor in a wafer that includes a dielectric region overlying a substrate includes forming a through-wafer via in the dielectric region and the substrate. The through-wafer via includes a through-wafer via insulator covering a sidewall and a bottom of a through-wafer via opening and a through-wafer via conductor covering the through-wafer via insulator. The method further includes thinning the substrate, forming a substrate backside insulator, forming an opening in the substrate backside insulator to expose the through-wafer via conductor, and forming a backside conductor on the through-wafer via conductor, such that the substrate backside conductor extends over the substrate backside insulator, thereby forming the decoupling composite capacitor.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: July 30, 2013
    Assignee: Broadcom Corporation
    Inventors: Xiangdong Chen, Wei Xia
  • Patent number: 8493767
    Abstract: According to one embodiment, a one-time programmable (OTP) device having a lateral diffused metal-oxide-semiconductor (LDMOS) structure comprises a pass gate including a pass gate electrode and a pass gate dielectric, and a programming gate including a programming gate electrode and a programming gate dielectric. The programming gate is spaced from the pass gate by a drain extension region of the LDMOS structure. The LDMOS structure provides protection for the pass gate when a programming voltage for rupturing the programming gate dielectric is applied to the programming gate electrode. A method for producing such an OTP device comprises forming a drain extension region, fabricating a pass gate over a first portion of the drain extension region, and fabricating a programming gate over a second portion of the drain extension region.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: July 23, 2013
    Assignee: Broadcom Corporation
    Inventors: Akira Ito, Xiangdong Chen
  • Publication number: 20130181354
    Abstract: A semiconductor package may include a substrate, and a semiconductor interposer having a cavity and a plurality of through semiconductor vias. The semiconductor interposer is situated over the substrate. An intra-interposer die is disposed within the cavity of the semiconductor interposer. A thermally conductive adhesive is disposed within the cavity and contacts the intra-interposer die. Additionally, a top die is situated over the semiconductor interposer. In one implementation, the semiconductor interposer is a silicon interposer. In another implementation, the semiconductor interposer is flip-chip mounted to the substrate such that the intra-interposer die disposed within the cavity faces the substrate. In yet another implementation, the cavity in the semiconductor interposer may extend from a top surface of the semiconductor interposer to a bottom surface of the semiconductor interposer and a thermal interface material may be disposed between the intra-interposer die and the substrate.
    Type: Application
    Filed: January 12, 2012
    Publication date: July 18, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Rezaur Rahman Khan, Sam Ziqun Zhao, Pieter Vorenkamp, Kevin Kunzhong Hu, Sampath K.V. Karikalan, Xiangdong Chen
  • Publication number: 20130168860
    Abstract: There are disclosed herein various implementations of semiconductor packages including an interposer without through-semiconductor vias (TSVs). One exemplary implementation includes a first active die situated over an interposer. The interposer includes an interposer dielectric having intra-interposer routing traces. The first active die communicates electrical signals to a package substrate situated below the interposer utilizing the intra-interposer routing traces and without utilizing TSVs. In one implementation, the semiconductor package includes a second active die situated over the interposer, the second active die communicating electrical signals to the package substrate utilizing the intra-interposer routing traces and without utilizing TSVs. Moreover, in one implementation, the first active die and the second active die communicate chip-to-chip signals through the interposer.
    Type: Application
    Filed: December 28, 2011
    Publication date: July 4, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Sampath K.V. Karikalan, Sam Ziqun Zhao, Kevin Kunzhong Hu, Rezaur Rahman Khan, Pieter Vorenkamp, Xiangdong Chen
  • Publication number: 20130168854
    Abstract: There are disclosed herein various implementations of semiconductor packages including a bridge interposer. One exemplary implementation includes a first active die having a first portion situated over the bridge interposer, and a second portion not situated over the bridge interposer. The semiconductor package also includes a second active die having a first portion situated over the bridge interposer, and a second portion not situated over the bridge interposer. The second portion of the first active die and the second portion of the second active die include solder balls mounted on a package substrate, and are configured to communicate electrical signals to the package substrate utilizing the solder balls and without utilizing through-semiconductor vias (TSVs).
    Type: Application
    Filed: December 28, 2011
    Publication date: July 4, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Sampath K.V. KARIKALAN, Sam Ziqun ZHAO, Kevin Kunzhong HU, Rezaur Rahman KHAN, Pieter VORENKAMP, Xiangdong CHEN
  • Publication number: 20130168841
    Abstract: An exemplary implementation of the present disclosure includes a programmable interposer having top and bottom interface electrodes and conductive particles interspersed within the programmable interposer. The conductive particles are capable of forming an aligned configuration between the top and bottom interface electrodes in response to application of an energy field to the programmable interposer so as to electrically connect the top and bottom interface electrodes. The conductive particles can have a conductive outer surface. Also, the conductive particles can be spherical. The conductive particles can be within a bulk material in an interface layer in the programmable interposer, and the bulk material can be cured to secure programmed paths between the top and bottom interface electrodes.
    Type: Application
    Filed: December 29, 2011
    Publication date: July 4, 2013
    Inventors: Sam Ziqun Zhao, Kevin Kunzhong Hu, Sampath K.V. Karikalan, Rezaur Rahman Khan, Pieter Vorenkamp, Xiangdong Chen
  • Publication number: 20130154106
    Abstract: An exemplary implementation of the present disclosure includes a stacked package having a top die from a top reconstituted wafer situated over a bottom die from a bottom reconstituted wafer. The top die and the bottom die are insulated from one another by an insulation arrangement. The top die and the bottom die are also interconnected through the insulation arrangement. The insulation arrangement can include a top molding compound that flanks the top die and a bottom molding compound that flanks the bottom die. The top die and the bottom die can be interconnected through at least the top molding compound. Furthermore, the top die and the bottom die can be interconnected through a conductive via that extends within the insulation arrangement.
    Type: Application
    Filed: December 14, 2011
    Publication date: June 20, 2013
    Applicant: BROADCOM CORPORATION
    Inventors: Kevin Kunzhong Hu, Sam Ziqun Zhao, Rezaur Rahman Khan, Pieter Vorenkamp, Sampath K.V. Karikalan, Xiangdong Chen
  • Patent number: 8466473
    Abstract: A semiconductor device is provided that includes a semiconductor substrate having a well region located within an upper region thereof. A semiconductor material stack is located on the well region. The semiconductor material stack includes, from bottom to top, a semiconductor-containing buffer layer and a non-doped semiconductor-containing channel layer; the semiconductor-containing buffer layer of the semiconductor material stack is located directly on an upper surface of the well region. The structure also includes a gate material stack located directly on an upper surface of the non-doped semiconductor-containing channel layer. The gate material stack employed in the present disclosure includes, from bottom to top, a high k gate dielectric layer, a work function metal layer and a polysilicon layer.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: June 18, 2013
    Assignee: International Business Machines Corporation
    Inventors: Jin Cai, Xiangdong Chen, Xinlin Wang
  • Patent number: 8461009
    Abstract: Process for enhancing strain in a channel with a stress liner, spacer, process for forming integrated circuit and integrated circuit. A first spacer composed of an first oxide and first nitride layer is applied to a gate electrode on a substrate, and a second spacer composed of a second oxide and second nitride layer is applied. Deep implanting of source and drain in the substrate occurs, and removal of the second nitride, second oxide, and first nitride layers.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: June 11, 2013
    Assignees: International Business Machines Corporation, Chartered Semiconductor Manufacturing Ltd.
    Inventors: Atul C. Ajmera, Christopher V. Baiocco, Xiangdong Chen, Wenzhi Gao, Young Way Teh
  • Patent number: 8455977
    Abstract: According to one exemplary embodiment, a method for forming a one-time programmable metal fuse structure includes forming a metal fuse structure over a substrate, the metal fuse structure including a gate metal segment situated between a dielectric segment and a polysilicon segment, a gate metal fuse being formed in a portion of the gate metal segment. The method further includes doping the polysilicon segment so as to form first and second doped polysilicon portions separated by an undoped polysilicon portion where, in one embodiment, the gate metal fuse is substantially co-extensive with the undoped polysilicon portion. The method can further include forming a first silicide segment on the first doped polysilicon portion and a second silicide segment on the second doped polysilicon portion, where the first and second silicide segments form respective terminals of the one-time programmable metal fuse structure.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: June 4, 2013
    Assignee: Broadcom Corporation
    Inventors: Wei Xia, Xiangdong Chen, Akira Ito