Patents by Inventor Shiqun Gu

Shiqun Gu 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: 9431298
    Abstract: An integrated circuit, a method for making an integrated circuit product, and methods for customizing an integrated circuit are disclosed. Integrated circuit elements including programmable elements, such as fuses, PROMs, RRAMs, MRAMs, or the like, are formed on the frontside of a substrate. Vias are formed through the substrate from its frontside to its backside to establish conduction paths to at least some of the programmable elements from the backside. A programming stimulus is applied to at least some of the vias from the backside to program at least some of the frontside programmable elements.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: August 30, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Daniel W. Perry, Shiqun Gu
  • Patent number: 9425096
    Abstract: Systems and methods are directed to a semiconductor device, which includes an integrated circuit, wherein the integrated circuit includes at least a first layer comprising two or more Tungsten lines and at least one air gap between at least two Tungsten lines, the air gaps to reduce capacitance. An interposer is coupled to the integrated circuit, to reduce stress on the two or more Tungsten lines and the at least one air gap. A laminated package substrate may be attached to the interposer such that the interposer is configured to absorb mechanical stress induced by mismatch in coefficient of thermal expansion (CTE) between the laminated package substrate and the interposer and protect the air gap from the mechanical stress.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: August 23, 2016
    Assignee: QUALCOMM INCORPORATED
    Inventors: Shiqun Gu, Matthew Michael Nowak, Jeffrey Junhao Xu
  • Patent number: 9418877
    Abstract: Some novel features pertain to an integrated device (e.g., integrated package) that includes a base portion for the integrated device, a first die (e.g., first wafer level die), and a second die (e.g., second wafer level die). The base portion includes a first inorganic dielectric layer, a first set of interconnects located in the first inorganic dielectric layer, a second dielectric layer different from the first inorganic dielectric layer, and a set of redistribution metal layers in the second dielectric layer. The first die is coupled to a first surface of the base portion. The second die is coupled to the first surface of the base portion, the second die is electrically coupled to the first die through the first set of interconnects.
    Type: Grant
    Filed: July 4, 2014
    Date of Patent: August 16, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Shiqun Gu, Ratibor Radojcic, Dong Wook Kim, Jae Sik Lee
  • Patent number: 9401353
    Abstract: An integrated interposer includes an interposer substrate including at least a first portion of a 3D passive device within an active region of the interposer substrate. The integrated interposer also includes an inter-conductive dielectric layer on an active surface of the active region of the interposer substrate, the inter-conductive dielectric layer including at least a second portion of the 3D passive device. The integrated interposer further includes a contact layer coupled to the 3D passive devices and configured to couple at least one die to the integrated interposer. The integrated interposer also includes at least one through via coupled to the contact layer and extending through the interposer substrate to a passive surface of the interposer substrate. The integrated interposer further includes an interconnect layer on the passive surface of the interposer substrate and coupled to the at least one through via.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: July 26, 2016
    Assignee: QUALCOMM INCORPORATED
    Inventors: Vidhya Ramachandran, Shiqun Gu
  • Patent number: 9401350
    Abstract: A package-on-package (POP) structure is disclosed. The POP structure includes a first die, a second die, and a photo-imaged dielectric (PID) layer. The PID layer is disposed between the first die and the second die. The POP structure also includes a first conductive path from the first die through the PID layer to the second die. The first conductive path extends directly through a first area of the PID layer directly between the first die and the second die. The POP structure further includes a second conductive path from the first die through the PID layer to the second die. A particular portion of the second conductive path is perpendicular to the first conductive path and extends through a second area of the PID layer not directly between the first die and the second die.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: July 26, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Hong Bok We, Jae Sik Lee, Dong Wook Kim, Shiqun Gu
  • Patent number: 9379201
    Abstract: A method includes thinning a back-side of a substrate to expose a portion of a first via that is formed in the substrate. The method also includes forming a first diode at the back-side of the substrate. The first diode is coupled to the first via.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: June 28, 2016
    Assignee: Qualcomm Incorporated
    Inventors: Vidhya Ramachandran, Brian Matthew Henderson, Shiqun Gu, Chiew-Guan Tan, Jung Pill Kim, Taehyun Kim
  • Patent number: 9368716
    Abstract: A magnetic tunnel junction storage element for a spin transfer torque magnetoresistive random access memory (STT-MRAM) bit cell includes a bottom electrode layer, a pinned layer adjacent to the bottom electrode layer, a dielectric layer encapsulating a portion of the bottom electrode layer and the pinned layer, the dielectric layer including sidewalls that define a hole adjacent to a portion of the pinned layer, a tunneling barrier adjacent to the pinned layer, a free layer adjacent to the tunneling barrier, and a top electrode adjacent to the free layer, wherein a width of the bottom electrode layer and/or the pinned barrier in a first direction is greater than a width of a contact area between the pinned layer and the tunneling barrier in the first direction. Also a method of forming an STT-MRAM bit cell.
    Type: Grant
    Filed: February 2, 2009
    Date of Patent: June 14, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Shiqun Gu, Seung H. Kang, Xiaochun Zhu
  • Patent number: 9368450
    Abstract: An integrated device package includes a first die, a second die, an encapsulation portion coupled to the first die and the second die, and a redistribution portion coupled to the encapsulation portion. The encapsulation portion includes an encapsulation layer, a bridge, and a first via. The bridge is at least partially embedded in the encapsulation layer. The bridge is configured to provide a first electrical path for a first signal between the first die and the second die. The first via is in the encapsulation layer. The first via is coupled to the bridge. The first via and the bridge are configured to provide a second electrical path for a second signal to the first die. The redistribution portion includes at least one dielectric layer, and at least one interconnect, in the dielectric layer, coupled to the first via.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: June 14, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Shiqun Gu, Hong Bok We, Jae Sik Lee, Dong Wook Kim
  • Patent number: 9355963
    Abstract: A semiconductor package according to some examples of the disclosure may include a base with a first redistribution layer on one side, first and second side by side die attached to the base on an opposite side from the first redistribution layer, an interposer attached to active sides of the first and second die to provide an interconnection between the first and second die, a plurality of die vias extending from the first and second die to a second redistribution layer on a surface of the package opposite the first redistribution layer, and a plurality of package vias extending through the package between the first and second redistribution layers.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: May 31, 2016
    Assignee: QUALCOMM INCORPORATED
    Inventors: Dong Wook Kim, Jae Sik Lee, Hong Bok We, Young Kyu Song, Chin-Kwan Kim, Kyu-Pyung Hwang, Shiqun Gu
  • Patent number: 9355904
    Abstract: A semiconductor die including strain relief for through substrate vias (TSVs). A method for strain relief of TSVs includes defining a through substrate via cavity in a substrate. The method also includes depositing an isolation layer in the cavity. The method further includes filling the cavity with a conductive material. The method also includes removing a portion of the isolation layer to create a recessed portion.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: May 31, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Vidhya Ramachandran, Shiqun Gu
  • Publication number: 20160133571
    Abstract: Some novel features pertain to an integrated device package that includes an encapsulation portion and a redistribution portion. The encapsulation portion includes a first die, a first set of vias coupled to the first die, a second die, a second set of vias coupled to the second die, a bridge, and an encapsulation layer. The bridge is configured to provide an electrical path between the first die and the second die. The bridge is coupled to the first die through the first set of vias. The bridge is further coupled to the second die through the second set of vias. The encapsulation layer at least partially encapsulates the first die, the second die, the bridge, the first set of vias, and the second set of vias. The redistribution portion is coupled to the encapsulation portion. The redistribution portion includes a set of redistribution interconnects, and at least one dielectric layer.
    Type: Application
    Filed: November 7, 2014
    Publication date: May 12, 2016
    Inventors: Jae Sik Lee, Hong Bok We, Dong Wook Kim, Shiqun Gu
  • Publication number: 20160133614
    Abstract: The present disclosure provides semiconductor packages and methods for fabricating semiconductor packages. The semiconductor package may comprise a semiconductor device mounted to a first substrate, a voltage regulator mounted to the first substrate and coupled to the semiconductor device, and an inductive element located on a perimeter of the semiconductor device and coupled to the voltage regulator, wherein the inductive element is formed by a plurality of interconnected conductive elements extending vertically from the first substrate.
    Type: Application
    Filed: November 7, 2014
    Publication date: May 12, 2016
    Inventors: Shiqun GU, Ratibor RADOJCIC, Mustafa BADAROGLU, Chunlei SHI, Yuancheng Christopher PAN
  • Publication number: 20160126173
    Abstract: A high density fan out package structure may include a contact layer. The contact layer includes a conductive interconnect layer having a first surface facing an active die and a second surface facing a redistribution layer. The high density fan out package structure has a barrier layer on the first surface of the conductive interconnect layer. The high density fan out package structure may also include the redistribution layer, which has conductive routing layers. The conductive routing layers may be configured to couple a first conductive interconnect to the conductive interconnect layer. The high density fan out package structure may further include a first via coupled to the barrier liner and configured to couple with a second conductive interconnect to the active die.
    Type: Application
    Filed: April 22, 2015
    Publication date: May 5, 2016
    Inventors: Dong Wook KIM, Hong Bok WE, Jae Sik LEE, Shiqun GU
  • Patent number: 9318696
    Abstract: Systems and methods for forming precise and self-aligned top metal contact for a Magnetoresistive random-access memory (MRAM) device include forming a magnetic tunnel junction (MTJ) in a common interlayer metal dielectric (IMD) layer with a logic element. A low dielectric constant (K) etch stop layer is selectively retained over an exposed top surface of the MTJ. Etching is selectively performed through a top IMD layer formed over the low K etch stop layer and the common IMD layer, based on a first chemistry which prevents etching through the low K etch stop layer. By switching chemistry to a second chemistry which precisely etches through the low K etch stop layer, an opening is created for forming a self-aligned top contact to the exposed top surface of the MTJ.
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: April 19, 2016
    Assignee: QUALCOMM INCORPORATED
    Inventors: Yu Lu, Xia Li, Seung Hyuk Kang, Shiqun Gu
  • Publication number: 20160093591
    Abstract: A microelectromechanical system (MEMS) bond release structure is provided for manufacturing of three-dimensional integrated circuit (3D IC) devices with two or more tiers. The MEMS bond release structure includes a MEMS sacrificial release layer which may have a pillar or post structure, or alternatively, a continuous sacrificial layer for bonding and release.
    Type: Application
    Filed: September 26, 2014
    Publication date: March 31, 2016
    Inventors: Je-Hsiung Jeffrey LAN, Wenyue ZHANG, Yang DU, Yong Ju LEE, Shiqun GU, Jing XIE
  • Publication number: 20160093571
    Abstract: A semiconductor package according to some examples of the disclosure may include a base with a first redistribution layer on one side, first and second side by side die attached to the base on an opposite side from the first redistribution layer, an interposer attached to active sides of the first and second die to provide an interconnection between the first and second die, a plurality of die vias extending from the first and second die to a second redistribution layer on a surface of the package opposite the first redistribution layer, and a plurality of package vias extending through the package between the first and second redistribution layers.
    Type: Application
    Filed: September 26, 2014
    Publication date: March 31, 2016
    Inventors: Dong Wook KIM, Jae Sik LEE, Hong Bok WE, Young Kyu SONG, Chin-Kwan KIM, Kyu-Pyung HWANG, Shiqun GU
  • Patent number: 9276199
    Abstract: Some implementations provide a die that includes a magnetoresistive random access memory (MRAM) cell array that includes several MRAM cells. The die also includes a first ferromagnetic layer positioned above the MRAM cell array, a second ferromagnetic layer positioned below the MRAM cell array, and several vias positioned around at least one MRAM cell. The via comprising a ferromagnetic material. In some implementations, the first ferromagnetic layer, the second ferromagnetic layer and the several vias define a magnetic shield for the MRAM cell array. The MRAM cell may include a magnetic tunnel junction (MTJ). In some implementations, the several vias traverse at least a metal layer and a dielectric layer of the die. In some implementations, the vias are through substrate vias. In some implementations, the ferromagnetic material has high permeability and high B saturation.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: March 1, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Shiqun Gu, Rongtian Zhang, Vidhya Ramachandran, Dong Wook Kim
  • Patent number: 9268720
    Abstract: A load balancing in a multiple DRAM system comprises interleaving memory data across two or more memory channels. Access to the memory channels is controlled by memory controllers. Bus masters are coupled to the memory controllers via an interconnect system and memory requests are transmitted from the bus masters to the memory controller. If congestion is detected in a memory channel, congestion signals are generated and transmitted to the bus masters. Memory requests are accordingly withdrawn or rerouted to less congested memory channels based on the congestion signals.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: February 23, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Feng Wang, Shiqun Gu, Jonghae Kim, Matthew Michael Nowak
  • Publication number: 20160043068
    Abstract: An integrated interposer includes an interposer substrate including at least a first portion of a 3D passive device within an active region of the interposer substrate. The integrated interposer also includes an inter-conductive dielectric layer on an active surface of the active region of the interposer substrate, the inter-conductive dielectric layer including at least a second portion of the 3D passive device. The integrated interposer further includes a contact layer coupled to the 3D passive devices and configured to couple at least one die to the integrated interposer. The integrated interposer also includes at least one through via coupled to the contact layer and extending through the interposer substrate to a passive surface of the interposer substrate. The integrated interposer further includes an interconnect layer on the passive surface of the interposer substrate and coupled to the at least one through via.
    Type: Application
    Filed: August 8, 2014
    Publication date: February 11, 2016
    Inventors: Vidhya RAMACHANDRAN, Shiqun GU
  • Publication number: 20160013133
    Abstract: Systems and methods are directed to a semiconductor device, which includes an integrated circuit, wherein the integrated circuit includes at least a first layer comprising two or more Tungsten lines and at least one air gap between at least two Tungsten lines, the air gaps to reduce capacitance. An interposer is coupled to the integrated circuit, to reduce stress on the two or more Tungsten lines and the at least one air gap. A laminated package substrate may be attached to the interposer such that the interposer is configured to absorb mechanical stress induced by mismatch in coefficient of thermal expansion (CTE) between the laminated package substrate and the interposer and protect the air gap from the mechanical stress.
    Type: Application
    Filed: July 14, 2014
    Publication date: January 14, 2016
    Inventors: Shiqun GU, Matthew Michael NOWAK, Jeffrey Junhao XU