Patents by Inventor Xiaohong Jiang

Xiaohong Jiang 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: 8502386
    Abstract: Broadly speaking, the embodiments of the present invention fill the need for methods of designing vertical transmission lines for optimal signal transition in multi-layer BGA packages. By controlling the impedance and geometry continuity of micro vias in each micro via layer in the package to follow smooth impedance and geometry curves from layer to layer, the return loss and insertion loss of the transmission line can be reduced or controlled to within acceptable ranges.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: August 6, 2013
    Assignee: Altera Corporation
    Inventors: Xiaohong Jiang, Hong Shi
  • Patent number: 8368174
    Abstract: An integrated circuit with an on-die compensation network is presented. The compensation network includes a compensation inductor that has one terminal coupled to a bump pad of the die. Another terminal of the inductor is connected to a metal layer underneath the compensation inductor, forming a pi-configuration with the bump pad. The metal layer routes input and output signals from the integrated circuit. The invention can be used in either flip chip or wire bond applications.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: February 5, 2013
    Assignee: Altera Corporation
    Inventors: Xiaohong Jiang, Hong Shi
  • Patent number: 8294259
    Abstract: In one embodiment, signaling and ground contacts are located in at least two parallel, rectilinear rows along at least one edge of an interconnect package such as a BGA package. In one row, each of a plurality of ground contacts is located between two pairs of contacts for receiving differential signals. In the second row, each of a plurality of ground contacts is located between two pairs of contacts for transmitting differential signals and the ground contacts in the second row are offset by one column from the ground contacts in the first row. As a result, the ratio of signaling pairs to ground contacts is 2:2. Additional pairs of rows may also be used. In other embodiments, signaling and ground contacts are located in three parallel, rectilinear rows along at least one edge of the package.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: October 23, 2012
    Assignee: Altera Corporation
    Inventors: Xiaohong Jiang, Hong Shi
  • Publication number: 20110193233
    Abstract: In one embodiment, signaling and ground contacts are located in at least two parallel, rectilinear rows along at least one edge of an interconnect package such as a BGA package. In one row, each of a plurality of ground contacts is located between two pairs of contacts for receiving differential signals. In the second row, each of a plurality of ground contacts is located between two pairs of contacts for transmitting differential signals and the ground contacts in the second row are offset by one column from the ground contacts in the first row. As a result, the ratio of signaling pairs to ground contacts is 2:2. Additional pairs of rows may also be used. In other embodiments, signaling and ground contacts are located in three parallel, rectilinear rows along at least one edge of the package. In the first row, ground contacts alternate with contacts for receiving differential signals and in the second row ground contacts alternate with contacts for transmitting differential signals.
    Type: Application
    Filed: February 9, 2010
    Publication date: August 11, 2011
    Inventors: Xiaohong Jiang, Hong Shi
  • Patent number: 7752587
    Abstract: Broadly speaking, the embodiments of the present invention fill the need for methods of designing vertical transmission lines for optimal signal transition in multi-layer BGA packages. By controlling the impedance and geometry continuity of micro vias in each micro via layer in the package to follow smooth impedance and geometry curves from layer to layer, the return loss and insertion loss of the transmission line can be reduced or controlled to within acceptable ranges.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: July 6, 2010
    Assignee: Altera Corporation
    Inventors: Xiaohong Jiang, Hong Shi
  • Publication number: 20100148375
    Abstract: Broadly speaking, the embodiments of the present invention fill the need for methods of designing vertical transmission lines for optimal signal transition in multi-layer BGA packages. By controlling the impedance and geometry continuity of micro vias in each micro via layer in the package to follow smooth impedance and geometry curves from layer to layer, the return loss and insertion loss of the transmission line can be reduced or controlled to within acceptable ranges.
    Type: Application
    Filed: February 26, 2010
    Publication date: June 17, 2010
    Inventors: Xiaohong Jiang, Hong Shi
  • Patent number: 7573099
    Abstract: A device structure and method for forming graded junction using a implant process. Embodiments of the invention comprise implanting ions into said silicon substrate to form doped regions adjacent to said gate. The orientation of the channel region in the Si crystal structure (channel direction <100>) in combination with the large angle tilt and twist implant process produce doped regions that have a more graded junction. The orientation and implant process creates more channeling of ions. The channeling of ions creates a more graded junction. When implemented on a HV MOS TX, the graded junction of the LDD increases the breakdown voltage. Another embodiment is a FET with an annular shaped channel region.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: August 11, 2009
    Assignee: Chartered Semiconductor Manufacturing, Ltd.
    Inventors: Yisuo Li, Xiaohong Jiang, Francis Benistant
  • Publication number: 20090077523
    Abstract: Broadly speaking, the embodiments of the present invention fill the need for methods of designing vertical transmission lines for optimal signal transition in multi-layer BGA packages. By controlling the impedance and geometry continuity of micro vias in each micro via layer in the package to follow smooth impedance and geometry curves from layer to layer, the return loss and insertion loss of the transmission line can be reduced or controlled to within acceptable ranges.
    Type: Application
    Filed: September 19, 2007
    Publication date: March 19, 2009
    Inventors: Xiaohong Jiang, Hong Shi
  • Patent number: 7253483
    Abstract: A device structure and method for forming graded junction using a implant process. Embodiments of the invention comprise implanting ions into said silicon substrate to form doped regions adjacent to said gate. The orientation of the channel region in the Si crystal structure (channel direction <100>) in combination with the large angle tilt and twist implant process produce doped regions that have a more graded junction. The orientation and implant process creates more channeling of ions. The channeling of ions creates a more graded junction. When implemented on a HV MOS TX, the graded junction of the LDD increases the breakdown voltage. Another embodiment is a FET with an annular shaped channel region.
    Type: Grant
    Filed: June 27, 2005
    Date of Patent: August 7, 2007
    Assignee: Chartered Semiconductor Manufacturing, LTD
    Inventors: Yisuo Li, Xiaohong Jiang, Francis Benistant
  • Publication number: 20050280082
    Abstract: A device structure and method for forming graded junction using a implant process. Embodiments of the invention comprise implanting ions into said silicon substrate to form doped regions adjacent to said gate. The orientation of the channel region in the Si crystal structure (channel direction <100>) in combination with the large angle tilt and twist implant process produce doped regions that have a more graded junction. The orientation and implant process creates more channeling of ions. The channeling of ions creates a more graded junction. When implemented on a HV MOS TX, the graded junction of the LDD increases the breakdown voltage. Another embodiment is a FET with an annular shaped channel region.
    Type: Application
    Filed: June 27, 2005
    Publication date: December 22, 2005
    Inventors: Yisuo Li, Xiaohong Jiang, Francis Benistant
  • Patent number: 6972236
    Abstract: A device structure and method for forming graded junction using a implant process. Embodiments of the invention comprise implanting ions into said silicon substrate to form doped regions adjacent to said gate. The orientation of the channel region in the Si crystal structure (channel direction <100>) in combination with the large angle tilt and twist implant process produce doped regions that have a more graded junction. The orientation and implant process creates more channeling of ions. The channeling of ions creates a more graded junction. When implemented on a HV MOS TX, the graded junction of the LDD increases the breakdown voltage. Another embodiment is a FET with an annular shaped channel region.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: December 6, 2005
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Yisuo Li, Xiaohong Jiang, Francis Benistant
  • Publication number: 20050236677
    Abstract: A device structure and method for forming graded junction using a implant process. Embodiments of the invention comprise implanting ions into said silicon substrate to form doped regions adjacent to said gate. The orientation of the channel region in the Si crystal structure (channel direction <100>) in combination with the large angle tilt and twist implant process produce doped regions that have a more graded junction. The orientation and implant process creates more channeling of ions. The channeling of ions creates a more graded junction. When implemented on a HV MOS TX, the graded junction of the LDD increases the breakdown voltage. Another embodiment is a FET with an annular shaped channel region.
    Type: Application
    Filed: June 28, 2005
    Publication date: October 27, 2005
    Inventors: Yisuo Li, Xiaohong Jiang, Francis Benistant
  • Publication number: 20050170595
    Abstract: A device structure and method for forming graded junction using a implant process. Embodiments of the invention comprise implanting ions into said silicon substrate to form doped regions adjacent to said gate. The orientation of the channel region in the Si crystal structure (channel direction <100>) in combination with the large angle tilt and twist implant process produce doped regions that have a more graded junction. The orientation and implant process creates more channeling of ions. The channeling of ions creates a more graded junction. When implemented on a HV MOS TX, the graded junction of the LDD increases the breakdown voltage. Another embodiment is a FET with an annular shaped channel region.
    Type: Application
    Filed: January 30, 2004
    Publication date: August 4, 2005
    Inventors: Yisuo Li, Xiaohong Jiang, Francis Benistant
  • Patent number: 6313999
    Abstract: An apparatus which aligns a ball grid array (BGA) device over a substrate. The apparatus preferably includes a cup-shaped member for cupping and holding the solder balls of the BGA device, and an elongate member attached to the cup-shaped member. The cup-shaped member is attached between the BGA device and the substrate at two or more different positions so that the solder balls of the BGA device become aligned over the terminals of the substrate by operation of gravity.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: November 6, 2001
    Assignee: Agere Systems Optoelectronics Guardian Corp.
    Inventors: Roger Anthony Fratti, John Wayne Bowen, Dwight David Daugherty, Xiaohong Jiang