Patents by Inventor Chung-Lin Wu

Chung-Lin Wu 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: 7332806
    Abstract: A semiconductor die package. It includes (a) a semiconductor die including a first surface and a second surface, (b) a source lead structure including protruding region having a major surface, the source lead structure being coupled to the first surface, (c) a gate lead structure being coupled to the first surface, and (d) a molding material around the source lead structure and the semiconductor die. The molding material exposes the second surface of the semiconductor die and the major surface of the source lead structure.
    Type: Grant
    Filed: January 31, 2005
    Date of Patent: February 19, 2008
    Assignee: Fairchild Semiconductor Corporation
    Inventors: Rajeev Joshi, Chung-Lin Wu
  • Publication number: 20070238263
    Abstract: A method of bonding a semiconductor substrate to a metal substrate is disclosed. In some embodiments the method includes forming a semiconductor device in a semiconductor substrate, the semiconductor device comprising a first surface. The method further includes obtaining a metal substrate. The metal substrate is bonded to the first surface of the semiconductor device, wherein at least a portion of the metal substrate forms an electrical terminal for the semiconductor device.
    Type: Application
    Filed: April 6, 2006
    Publication date: October 11, 2007
    Inventors: Hamza Yilmaz, Qi Wang, Minhua Li, Chung-Lin Wu
  • Publication number: 20070132091
    Abstract: A semiconductor package includes a semiconductor device 30 and a molded upper heat sink 10. The heat sink has an interior surface 16 that faces the semiconductor device and an exterior surface 15 that is at least partially exposed to the ambient environment of the packaged device. An annular planar base 11 surrounds a raised or protruding central region 12. That region is supported above the plane of the base 11 by four sloped walls 13.1-13.4. The walls slope at an acute angle with respect to the planar annular base and incline toward the center of the upper heat sink 10. Around the outer perimeter of the annular base 11 are four support arms 18.1-18.4. The support arms are disposed at an obtuse angle with respect to the interior surface 16 of the planar annular base 11.
    Type: Application
    Filed: December 9, 2005
    Publication date: June 14, 2007
    Inventors: Chung-Lin Wu, Rajeev Joshi
  • Publication number: 20070072347
    Abstract: A multichip module package uses bond wire with plastic resin on one side of a lead frame to package an integrated circuit and flip chip techniques to attach one or more mosfets to the other side of the lead frame. The assembled multichip module 30 has an integrated circuit controller 14 on a central die pad. Wire bonds 16 extend from contact areas on the integrated circuit to outer leads 2.6 of the lead frame 10. On the opposite, lower side of the central die pad, the sources and gates of the mosfets 24, 26 are bump or stud attached to the half etched regions of the lead frame. The drains 36 of the mosfets and the ball contacts 22.1 on the outer leads are soldered to a printed circuit board.
    Type: Application
    Filed: November 17, 2006
    Publication date: March 29, 2007
    Inventors: Jonathan Noquil, Seung Choi, Rajeev Joshi, Chung-Lin Wu
  • Publication number: 20070001278
    Abstract: Semiconductor die packages are disclosed. An exemplary semiconductor die package includes a premolded substrate. The premolded substrate can have a semiconductor die attached to it, and an encapsulating material may be disposed over the semiconductor die.
    Type: Application
    Filed: June 19, 2006
    Publication date: January 4, 2007
    Inventors: Oseob Jeon, Yoonhwa Choi, Boon Gooi, Maria Cristina Estacio, David Chong, Tan Keng, Shibaek Nam, Rajeev Joshi, Chung-Lin Wu, Venkat Iyer, Lay Lim, Byoung-Ok Lee
  • Patent number: 7154186
    Abstract: A multichip module package uses bond wire with plastic resin on one side of a lead frame to package an integrated circuit and flip chip techniques to attach one or more mosfets to the other side of the lead frame. The assembled multichip module 30 has an integrated circuit controller 14 on a central die pad. Wire bonds 16 extend from contact areas on the integrated circuit to outer leads 2.6 of the lead frame 10. On the opposite, lower side of the central die pad, the sources and gates of the mosfets 24, 26 are bump or stud attached to the half etched regions of the lead frame. The drains 36 of the mosfets and the ball contacts 22.1 on the outer leads are soldered to a printed circuit board.
    Type: Grant
    Filed: March 18, 2004
    Date of Patent: December 26, 2006
    Assignee: Fairchild Semiconductor Corporation
    Inventors: Jonathan A. Noquil, Seung Yong Choi, Rajeev Joshi, Chung-Lin Wu
  • Publication number: 20060284291
    Abstract: A semiconductor die package is disclosed. In one embodiment, the die package includes a semiconductor die including a first surface and a second surface, and a leadframe structure having a die attach region and a plurality of leads extending away from the die attach region. The die attach region includes one or more apertures. A molding material is around at least portions of the die attach region of the leadframe structure and the semiconductor die. The molding material is also within the one or more apertures.
    Type: Application
    Filed: June 6, 2006
    Publication date: December 21, 2006
    Inventors: Rajeev Joshi, Chung-Lin Wu
  • Patent number: 7081666
    Abstract: A semiconductor die package is disclosed. In one embodiment, the die package includes a semiconductor die including a first surface and a second surface, and a leadframe structure having a die attach region and a plurality of leads extending away from the die attach region. The die attach region includes one or more apertures. A molding material is around at least portions of the die attach region of the leadframe structure and the semiconductor die. The molding material is also within the one or more apertures.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: July 25, 2006
    Assignee: Fairchild Semiconductor Corporation
    Inventors: Rajeev Joshi, Chung-Lin Wu
  • Patent number: 7022548
    Abstract: A method for processing a semiconductor substrate is disclosed. The method includes providing a mask having an aperture on a semiconductor substrate having a conductive region. An aperture in the mask is disposed over the conductive region. A pre-formed conductive column is placed in the aperture and is bonded to the conductive region.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: April 4, 2006
    Assignee: Fairchild Semiconductor Corporation
    Inventors: Rajeev Joshi, Chung-Lin Wu
  • Publication number: 20050206010
    Abstract: A multichip module package uses bond wire with plastic resin on one side of a lead frame to package an integrated circuit and flip chip techniques to attach one or more mosfets to the other side of the lead frame. The assembled multichip module 30 has an integrated circuit controller 14 on a central die pad. Wire bonds 16 extend from contact areas on the integrated circuit to outer leads 2.6 of the lead frame 10. On the opposite, lower side of the central die pad, the sources and gates of the mosfets 24, 26 are bump or stud attached to the half etched regions of the lead frame. The drains 36 of the mosfets and the ball contacts 22.1 on the outer leads are soldered to a printed circuit board.
    Type: Application
    Filed: March 18, 2004
    Publication date: September 22, 2005
    Inventors: Jonathan Noquil, Seung Choi, Rajeev Joshi, Chung-Lin Wu
  • Publication number: 20050176233
    Abstract: A packaged semiconductor device (a wafer-level chip scale package) containing no UBM between a chip pad and an RDL pattern is described. As well, the device contains only a single non-polymeric insulation layer between the RDL pattern and the solder bump. The single non-polymeric insulation layer does not need high temperature curing processes and so does not induce thermal stresses into the device. As well, manufacturing costs are diminished by eliminating the UBM between the chip pad and the RDL pattern.
    Type: Application
    Filed: July 11, 2003
    Publication date: August 11, 2005
    Inventors: Rajeev Joshi, Chung- Lin Wu, Sang-Do Lee, Yoon-Hwa Choi
  • Publication number: 20050133893
    Abstract: A semiconductor die package is disclosed. In one embodiment, the die package includes a semiconductor die including a first surface and a second surface, and a leadframe structure having a die attach region and a plurality of leads extending away from the die attach region. The die attach region includes one or more apertures. A molding material is around at least portions of the die attach region of the leadframe structure and the semiconductor die. The molding material is also within the one or more apertures.
    Type: Application
    Filed: February 4, 2005
    Publication date: June 23, 2005
    Inventors: Rajeev Joshi, Chung-Lin Wu
  • Publication number: 20050127483
    Abstract: Embodiments of the invention are directed to semiconductor die packages. One embodiment of the invention is directed to a semiconductor die package including, (a) a semiconductor die including a first surface and a second surface, (b) a source lead structure including protruding region having a major surface, the source lead structure being coupled to the first surface, (c) a gate lead structure being coupled to the first surface, and (d) a molding material around the source lead structure and the semiconductor die, where the molding material exposes the second surface of the semiconductor die and the major surface of the source lead structure.
    Type: Application
    Filed: January 31, 2005
    Publication date: June 16, 2005
    Inventors: Rajeev Joshi, Chung-Lin Wu
  • Patent number: 6891256
    Abstract: Embodiments of the invention are directed to semiconductor die packages. One embodiment of the invention is directed to a semiconductor die package including, (a) a semiconductor die including a first surface and a second surface, (b) a source lead structure including protruding region having a major surface, the source lead structure being coupled to the first surface, (c) a gate lead structure being coupled to the first surface, and (d) a molding material around the source lead structure and the semiconductor die, where the molding material exposes the second surface of the semiconductor die and the major surface of the source lead structure.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: May 10, 2005
    Assignee: Fairchild Semiconductor Corporation
    Inventors: Rajeev Joshi, Chung-Lin Wu
  • Patent number: 6867481
    Abstract: A semiconductor die package is disclosed. In one embodiment, the die package includes a semiconductor die including a first surface and a second surface, and a leadframe structure having a die attach region and a plurality of leads extending away from the die attach region. The die attach region includes one or more apertures. A molding material is around at least portions of the die attach region of the leadframe structure and the semiconductor die. The molding material is also within the one or more apertures.
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: March 15, 2005
    Assignee: Fairchild Semiconductor Corporation
    Inventors: Rajeev Joshi, Chung-Lin Wu
  • Patent number: 6836023
    Abstract: A semiconductor die package is disclosed. The die package includes a semiconductor die having a first side and a second side, a vertical transistor, and a bond pad at the first side. A passivation layer having a first aperture is on the first side, and the bond pad is exposed through the first aperture. An underbump metallurgy layer is on and in direct contact with the passivation layer. The underbump metallurgy layer is within the first aperture and contacts the bond pad. A dielectric layer comprising a second aperture is on and in direct contact with the underbump metallurgy layer. A solder structure is on the underbump metallurgy layer and is within the second aperture of the dielectric layer.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: December 28, 2004
    Assignee: Fairchild Semiconductor Corporation
    Inventors: Rajeev Joshi, Chung-Lin Wu
  • Publication number: 20040201081
    Abstract: A semiconductor die package is disclosed. In one embodiment, the die package includes a semiconductor die including a first surface and a second surface, and a leadframe structure having a die attach region and a plurality of leads extending away from the die attach region. The die attach region includes one or more apertures. A molding material is around at least portions of the die attach region of the leadframe structure and the semiconductor die. The molding material is also within the one or more apertures.
    Type: Application
    Filed: April 11, 2003
    Publication date: October 14, 2004
    Inventors: Rajeev Joshi, Chung-Lin Wu
  • Publication number: 20040191955
    Abstract: A packaged semiconductor device (a wafer-level chip scale package) containing an adhesive film containing conductive particles sandwiched between a chip with Cu-based stud bumps and a substrate containing a bond pad. Some conductive particles are sandwiched between the stud bump and bond pad to create a conductive path. The wafer level chip scale package is manufactured without the steps of dispensing solder and reflowing the solder and can optionally eliminate the use of a redistribution trace. Using such a configuration increases the reliability of the wafer-level chip scale package.
    Type: Application
    Filed: December 9, 2003
    Publication date: September 30, 2004
    Inventors: Rajeev Joshi, Chung-Lin Wu, Sang-Do Lee, Yoon-Hwa Choi
  • Publication number: 20040137724
    Abstract: A method for processing a semiconductor substrate is disclosed. The method includes providing a mask having an aperture on a semiconductor substrate having a conductive region. An aperture in the mask is disposed over the conductive region. A pre-formed conductive column is placed in the aperture and is bonded to the conductive region.
    Type: Application
    Filed: December 22, 2003
    Publication date: July 15, 2004
    Applicant: Fairchild Semiconductor Corporation
    Inventors: Rajeev Joshi, Chung-Lin Wu
  • Patent number: 6683375
    Abstract: A method for processing a semiconductor substrate is disclosed. The method includes providing a mask having an aperture on a semiconductor substrate having a conductive region. An aperture in the mask is disposed over the conductive region. A pre-formed conductive column is placed in the aperture and is bonded to the conductive region.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: January 27, 2004
    Assignee: Fairchild Semiconductor Corporation
    Inventors: Rajeev Joshi, Chung-Lin Wu