Patents by Inventor Luu T. Nguyen
Luu T. Nguyen 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).
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Patent number: 8716830Abstract: In one aspect of the present invention, an integrated circuit package will be described. The integrated circuit package includes at least two integrated circuits that are attached with a substrate. The integrated circuits and the substrates are at least partially encapsulated in a molding material. There is a groove or air gap that extends partially through the molding material and that is arranged to form a thermal barrier between the integrated circuits.Type: GrantFiled: November 23, 2011Date of Patent: May 6, 2014Assignee: Texas Instruments IncorporatedInventors: Anindya Poddar, Luu T. Nguyen
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Publication number: 20130127008Abstract: In one aspect of the present invention, an integrated circuit package will be described. The integrated circuit package includes at least two integrated circuits that are attached with a substrate. The integrated circuits and the substrates are at least partially encapsulated in a molding material. There is a groove or air gap that extends partially through the molding material and that is arranged to form a thermal barrier between the integrated circuits.Type: ApplicationFiled: November 23, 2011Publication date: May 23, 2013Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Anindya Poddar, Luu T. Nguyen
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Publication number: 20120032354Abstract: Methods and systems are described for enabling the efficient fabrication of wedge bonding of integrated circuit systems and electronic systems. In particular a reverse bonding approach can be employed.Type: ApplicationFiled: June 29, 2011Publication date: February 9, 2012Applicant: National Semiconductor CorporationInventors: Ken Pham, Luu T. Nguyen
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Patent number: 7824963Abstract: Apparatuses and methods for inkjet printing electrical interconnect patterns such as leadframes for integrated circuit devices are disclosed. An apparatus for packaging includes a thin substrate adapted for high temperature processing, and an attach pad and contact regions that are inkjet printed to the thin substrate using a metallic nanoink. The nanoink is then cured to remove liquid content. The residual metallic leadframe or electrical interconnect pattern has a substantially consistent thickness of about 10 to 50 microns or less. An associated panel assembly includes a conductive substrate panel having multiple separate device arrays comprising numerous electrical interconnect patterns each, a plurality of integrated circuit devices mounted on the conductive substrate panel, and a molded cap that encapsulates the integrated circuit devices and associated electrical interconnect patterns.Type: GrantFiled: November 25, 2009Date of Patent: November 2, 2010Assignee: National Semiconductor CorporationInventors: Randall L. Walberg, Luu T. Nguyen, Anindya Poddar
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Patent number: 7808089Abstract: One aspect of the invention pertains to a semiconductor package having a die and a die attach pad with a plurality of spaced apart pedestals supported by a web. A die is mounted on the die attach pad such that the die is supported by at least a plurality of the pedestals. Selected edge regions of the die are arranged to overlie recessed regions of the die attach pad between adjacent pedestals. The die is electrically connected to at least some of the contact leads. An adhesive is arranged to secure the die to the die attach pad, with the thickness of the adhesive between the web of the die attach pad and the die being greater than the thickness of the adhesive between the die and the top surfaces of the pedestals that support the die. The die attach pad may have rounded peripheral corners between adjacent edge surfaces of the die attach pad.Type: GrantFiled: December 18, 2007Date of Patent: October 5, 2010Assignee: National Semiconductor CorporationInventors: Luu T. Nguyen, Vijaylaxmi Gumaste
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Patent number: 7728399Abstract: Apparatuses and methods directed to an integrated circuit package having an optical component are disclosed. The package may include an integrated circuit die having at least one light sensitive region disposed on a first surface thereof. By way of example, the die may be a laser diode that emits light through the light sensitive region, or a photodetector that receives and detects light through the light sensitive region. An optical concentrator may be positioned adjacent the first surface of the first die. The optical concentrator includes a lens portion positioned adjacent the light sensitive region and adapted to focus light.Type: GrantFiled: July 22, 2008Date of Patent: June 1, 2010Assignees: National Semiconductor Corporation, The Regents of the University of CaliforniaInventors: Randall L. Walberg, Luu T. Nguyen, Robert Dahlgren, James B. Wieser, Kenneth Pedrotti, Jacob A. Wysocki
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Publication number: 20100072613Abstract: Apparatuses and methods for inkjet printing electrical interconnect patterns such as leadframes for integrated circuit devices are disclosed. An apparatus for packaging includes a thin substrate adapted for high temperature processing, and an attach pad and contact regions that are inkjet printed to the thin substrate using a metallic nanoink. The nanoink is then cured to remove liquid content. The residual metallic leadframe or electrical interconnect pattern has a substantially consistent thickness of about 10 to 50 microns or less. An associated panel assembly includes a conductive substrate panel having multiple separate device arrays comprising numerous electrical interconnect patterns each, a plurality of integrated circuit devices mounted on the conductive substrate panel, and a molded cap that encapsulates the integrated circuit devices and associated electrical interconnect patterns.Type: ApplicationFiled: November 25, 2009Publication date: March 25, 2010Applicant: NATIONAL SEMICONDUCTOR CORPORATIONInventors: Randall L. Walberg, Luu T. Nguyen, Anindya Poddar
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Patent number: 7667304Abstract: Apparatuses and methods for inkjet printing electrical interconnect patterns such as leadframes for integrated circuit devices are disclosed. An apparatus for packaging includes a thin substrate adapted for high temperature processing, and an attach pad and contact regions that are inkjet printed to the thin substrate using a metallic nanoink. The nanoink is then cured to remove liquid content. The residual metallic leadframe or electrical interconnect pattern has a substantially consistent thickness of about 10 to 50 microns or less. An associated panel assembly includes a conductive substrate panel having multiple separate device arrays comprising numerous electrical interconnect patterns each, a plurality of integrated circuit devices mounted on the conductive substrate panel, and a molded cap that encapsulates the integrated circuit devices and associated electrical interconnect patterns.Type: GrantFiled: April 28, 2008Date of Patent: February 23, 2010Assignee: National Semiconductor CorporationInventors: Randall L. Walberg, Luu T. Nguyen, Anindya Poddar
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Publication number: 20100019339Abstract: Apparatuses and methods directed to an integrated circuit package having an optical component are disclosed. The package may include an integrated circuit die having at least one light sensitive region disposed on a first surface thereof. By way of example, the die may be a laser diode that emits light through the light sensitive region, or a photodetector that receives and detects light through the light sensitive region. An optical concentrator may be positioned adjacent the first surface of the first die. The optical concentrator includes a lens portion positioned adjacent the light sensitive region and adapted to focus light.Type: ApplicationFiled: July 22, 2008Publication date: January 28, 2010Applicants: NATIONAL SEMICONDUCTOR CORPORATION, THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Randall L. WALBERG, Luu T. NGUYEN, Robert DAHLGREN, James B. WIESER, Kenneth PEDROTTI, Jacob A. WYSOCKI
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Publication number: 20100015329Abstract: Methods and arrangements are described for forming an array of contacts for use in packaging one or more integrated circuit devices. In particular, various methods are described for forming contacts having thicknesses less than approximately 10 ?m, and in particular embodiments, between 0.5 to 2 ?m.Type: ApplicationFiled: July 16, 2008Publication date: January 21, 2010Applicant: National Semiconductor CorporationInventors: Luu T. NGUYEN, Anindya PODDAR, Shaw W. LEE, Ashok S. PRABHU
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Publication number: 20090267216Abstract: Apparatuses and methods for inkjet printing electrical interconnect patterns such as leadframes for integrated circuit devices are disclosed. An apparatus for packaging includes a thin substrate adapted for high temperature processing, and an attach pad and contact regions that are inkjet printed to the thin substrate using a metallic nanoink. The nanoink is then cured to remove liquid content. The residual metallic leadframe or electrical interconnect pattern has a substantially consistent thickness of about 10 to 50 microns or less. An associated panel assembly includes a conductive substrate panel having multiple separate device arrays comprising numerous electrical interconnect patterns each, a plurality of integrated circuit devices mounted on the conductive substrate panel, and a molded cap that encapsulates the integrated circuit devices and associated electrical interconnect patterns.Type: ApplicationFiled: April 28, 2008Publication date: October 29, 2009Applicant: NATIONAL SEMICONDUCTOR CORPORATIONInventors: Randall L. Walberg, Luu T. Nguyen, Anindya Poddar
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Publication number: 20090174069Abstract: A semiconductor device is described. The device includes an integrated circuit die having an active surface that includes a plurality of input/output (I/O) pads. The device further includes a plurality of crack resistant structures. Each crack resistant structure is formed over an associated I/O pad and includes an associated raised portion. Each I/O pad may be bumped with solder such that a solder bump is formed over the associated crack resistant structure on the I/O pad.Type: ApplicationFiled: January 4, 2008Publication date: July 9, 2009Applicant: NATIONAL SEMICONDUCTOR CORPORATIONInventors: Hau Nguyen, Luu T. Nguyen, Anindya Poddar
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Publication number: 20090152683Abstract: One aspect of the invention pertains to a semiconductor die with rounded sidewall junction edge corners. Such rounding reduces stress accumulations at those corners. In other embodiments of the invention, the sharpness of other corners and edges in the die are reduced. For example, reducing the sharpness of the bottom edge corners formed by the intersection of a sidewall and the back surface of a die can further diminish stress accumulations. One embodiment pertains to a wafer carried on a wafer support, where the wafer includes a multiplicity of such dice. Another embodiment involves a semiconductor package containing such dice. Methods of fabricating the dice are also described.Type: ApplicationFiled: December 18, 2007Publication date: June 18, 2009Applicant: NATIONAL SEMICONDUCTOR CORPORATIONInventors: Luu T. Nguyen, Vijaylaxmi Gumaste
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Publication number: 20090152691Abstract: One aspect of the invention pertains to a semiconductor package having a die and a die attach pad with a plurality of spaced apart pedestals supported by a web. A die is mounted on the die attach pad such that the die is supported by at least a plurality of the pedestals. Selected edge regions of the die are arranged to overlie recessed regions of the die attach pad between adjacent pedestals. The die is electrically connected to at least some of the contact leads. An adhesive is arranged to secure the die to the die attach pad, with the thickness of the adhesive between the web of the die attach pad and the die being greater than the thickness of the adhesive between the die and the top surfaces of the pedestals that support the die. The die attach pad may have rounded peripheral corners between adjacent edge surfaces of the die attach pad.Type: ApplicationFiled: December 18, 2007Publication date: June 18, 2009Applicant: NATIONAL SEMICONDUCTOR CORPORATIONInventors: Luu T. NGUYEN, Vijaylaxmi GUMASTE
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Patent number: 7253078Abstract: An apparatus and method for forming a layer of underfill adhesive on an integrated circuit in wafer form is described. In one embodiment, the layer of underfill adhesive is disposed and partially cured on the active surface of the wafer. Once the underfill adhesive has partially cured, the wafer is singulated. The individual integrated circuits or die are then mounted onto a substrate such as a printed circuit board. When the solder balls of the integrated circuit are reflowed to form joints with corresponding contact pads on the substrate, the underfill adhesive reflows and is completely cured. In an alternative embodiment, the underfill adhesive is fully cured after it is disposed onto the active surface of the wafer.Type: GrantFiled: August 19, 2002Date of Patent: August 7, 2007Assignee: National Semiconductor CorporationInventors: Luu T. Nguyen, Hau T. Nguyen, Viraj A. Patwardhan, Nikhil Kelkar, Shahram Mostafazadeh
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Patent number: 6830382Abstract: An embodiment includes a connector element that comprises a connector body and a fiber optic ferrule slidably positioned inside the connector body. The ferrule holds at least one optical fiber. The connector element carries an optical sub-assembly including a photonic device and a spacer and includes a connector sleeve for receiving the connector element. The sleeve includes a ridge that operates as a first stop for the connector body and includes an alignment projection that coarsely aligns the fiber optic ferrule. The ferrule includes a pair of openings configured to receive a pair of alignment pins to provide fine alignment of optical fibers with corresponding photonic devices. The connector element is engaged with the connector sleeve to position the ferrule with respect to the optical sub-assembly such that the optical fiber is correctly positioned relative to a corresponding photonic device.Type: GrantFiled: July 12, 2002Date of Patent: December 14, 2004Assignee: National Semiconductor CorporationInventors: Peter Deane, Luu T. Nguyen, William P. Mazotti, Bruce C. Roberts, Christopher J. Smith, Janet E. Townsend, John P. Briant, Michael R. Nelson, Stephen Jacob
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Patent number: 6822315Abstract: An apparatus and method for scribing a semiconductor wafer coated with a substantially opaque material using vision recognition is disclosed. The apparatus includes a stage configured to hold a wafer, an imaging unit configured to generate an image of the wafer, and a computer configured to identify the coordinates of the scribe lines on the wafer from the image. During operation, the wafer is imaged using the imaging unit. The computer then identifies the coordinates of the scribe lines on the wafer from the image. Thereafter the coordinates are provided to a dicing machine which performs the dicing of the wafer. Accuracy is therefore improved since the dicing machine relies on the coordinates of the scribe lines as opposed to attempting to recognize the scribe lines through the opaque material. According to various embodiments of the invention, the imaging unit may use infrared, X-ray or ultrasound waves to generate the image of the wafer.Type: GrantFiled: February 14, 2002Date of Patent: November 23, 2004Assignee: National Semiconductor CorporationInventors: Nikhil V. Kelkar, Luu T. Nguyen
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Patent number: 6802654Abstract: The invention comprises a connector apparatus for electrically interconnecting a chip sub-assembly to an optical sub-assembly. The apparatus includes a connector sleeve with a chip sub-assembly having at least one electrical connection arranged thereon. The connector sleeve is suitable for receiving a connector plug that includes an optical fiber optically coupled to the photonic devices of an optical sub-assembly that includes electrical connectors. The connector plug is engaged with the connector sleeve, thereby electrically interconnecting the electrical connections of the chip sub-assembly to the electrical connectors of the optical sub-assembly such that electrical signals can pass between the chip sub-assembly and a photonic device of the optical sub-assembly.Type: GrantFiled: April 9, 2002Date of Patent: October 12, 2004Assignee: National Semiconductor CorporationInventors: Bruce C. Roberts, Stephen A. Gee, William P. Mazotti, Luu T. Nguyen, Jia Liu, Peter Deane, Ken Pham
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Publication number: 20030153179Abstract: An apparatus and method for scribing a semiconductor wafer coated with a substantially opaque material using vision recognition is disclosed. The apparatus includes a stage configured to hold a wafer, an imaging unit configured to generate an image of the wafer, and a computer configured to identify the coordinates of the scribe lines on the wafer from the image. During operation, the wafer is imaged using the imaging unit. The computer then identifies the coordinates of the scribe lines on the wafer from the image. Thereafter the coordinates are provided to a dicing machine which performs the dicing of the wafer. Accuracy is therefore improved since the dicing machine relies on the coordinates of the scribe lines as opposed to attempting to recognize the scribe lines through the opaque material. According to various embodiments of the invention, the imaging unit may use infrared, X-ray or ultrasound waves to generate the image of the wafer.Type: ApplicationFiled: February 14, 2002Publication date: August 14, 2003Applicant: National Semiconductor CorporationInventors: Nikhil V. Kelkar, Luu T. Nguyen
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Patent number: 5437095Abstract: A method of making an integrated circuit package is disclosed herein along with the package itself, which package is encapsulated by plastic that is caused to flow in a given direction during the package's formation. The package itself includes an IC chip having an army of chip output/input terminals, and means for supporting the chip including an array of electrically conductive leads, all of which are provided for connection with the output/input terminals of the IC chip. In addition, the overall package includes bonding wires connecting the chip output/input terminals with respective ones of the leads such that each bonding wire extends in a direction that defines an acute angle of less than 45 degrees with the given flow direction of the plastic material used to encapsulate the IC chip, support means and bonding wires. In a preferred embodiment, at least a portion and most preferably substantially all of the bonding wires are substantially parallel with the given flow direction of the plastic material.Type: GrantFiled: December 21, 1993Date of Patent: August 1, 1995Assignee: National Semiconductor CorporationInventors: Luu T. Nguyen, Hem P. Takiar