Patents by Inventor Michael A. Lamson
Michael A. Lamson 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: 7795072Abstract: A high-performance, high I/O ball grid array substrate, designed for integrated circuit flip-chip assembly and having two patterned metal layers, comprising: an insulating layer having a first surface, a second surface and a plurality of vias filled with metal. Said first surface having one of said metal layers attached to provide electrical ground potential, and having a plurality of electrically insulated openings for outside electrical contacts. An outermost insulating film protecting the exposed surface of said ground layer, said film having a plurality of openings filled with metal suitable for solder ball attachment. Said second surface having the other of said metal layers attached, portions thereof being configured as a plurality of electrical signal lines, further portions as a plurality of first electrical power lines, and further portions as a plurality of second electrical power lines, selected signal and power lines being in contact with said vias.Type: GrantFiled: April 9, 2008Date of Patent: September 14, 2010Assignee: Texas Instruments IncorporatedInventors: Michael A. Lamson, Navinchandra Kalidas
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Publication number: 20080195990Abstract: A high-performance, high I/O ball grid array substrate, designed for integrated circuit flip-chip assembly and having two patterned metal layers, comprising: an insulating layer having a first surface, a second surface and a plurality of vias filled with metal. Said first surface having one of said metal layers attached to provide electrical ground potential, and having a plurality of electrically insulated openings for outside electrical contacts. An outermost insulating film protecting the exposed surface of said ground layer, said film having a plurality of openings filled with metal suitable for solder ball attachment. Said second surface having the other of said metal layers attached, portions thereof being configured as a plurality of electrical signal lines, further portions as a plurality of first electrical power lines, and further portions as a plurality of second electrical power lines, selected signal and power lines being in contact with said vias.Type: ApplicationFiled: April 9, 2008Publication date: August 14, 2008Inventors: Michael A. Lamson, Navinchandra Kalidas
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Publication number: 20080157385Abstract: Multi-layer semiconductor devices and methods for their assembly are described in which the IC packages are endowed with vertical passive delay cells in order to approximately equalize, within selected design tolerances, the signal propagation delays among electrical traces within the package.Type: ApplicationFiled: December 29, 2006Publication date: July 3, 2008Inventors: Heping Yue, Hongwei Liang, Michael A. Lamson
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Patent number: 7265443Abstract: A semiconductor device has a semiconductor chip with a periphery and an IC organized in a core portion and a peripheral portion. The IC has a top level of interconnecting metal traces (510) from the peripheral portion to the core portion; the traces are covered by an insulating overcoat (520) which has peripheral windows to expose bond pads. The circuit further has at least one level of metal lines (511) on top of the insulating overcoat; the lines lead from the chip periphery towards the chip core, wherein each line (511) is substantially parallel to one of the traces (510) underneath the insulating overcoat and vertically aligned therewith. After assembling the chip onto a leadframe with segments (504), bonding wires (502) connect the bond pads (510a) and the metal lines (511a) with the segments.Type: GrantFiled: April 29, 2005Date of Patent: September 4, 2007Assignee: Texas Instruments IncorporatedInventors: Howard R. Test, Michael A. Lamson
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Patent number: 7195954Abstract: A semiconductor device having reduced self and mutual capacitance of bonded wires is provided by coating the wires with a foamed polymer effectively having a very low dielectric constant. Additional benefits are realized by electrically insulating the wires against short-circuiting, by cushioning the wires with a low modulus sheath, and by protecting chip bond pad metallization TABLE 1 Method of Moments Capacitance Models Wire Dimensions 25 × 25 microns Separation between Wires 63.5 microns Distance to ground ?191 microns Model Dielectric Self capacitance Mutual Capacitance constant of Wire 1 Wire 2 separation Model Dielectric Wire 1 Wire 2- Mutual cap constants self cap self cap pf/cm pf/cm pf/cm Plastic encased 4.0 1.03 0.54 1.57 package Cavity package 4./1.0/4. 0.31 0.12 0.43 Foam sheath 4./1./4./1./4. 0.34 0.16 0.50 wires/molded Wires - no 1.? 0.26 0.13 ?0.39.Type: GrantFiled: May 3, 2004Date of Patent: March 27, 2007Assignee: Texas Instruments IncorporatedInventors: Michael A. Lamson, Homer B. Klonis
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Patent number: 7132740Abstract: A semiconductor package having a plurality of conductors arrayed in two (or more) parallel planes, and an available ground conductor. Conductors in the auxiliary or second plane substantially overlay the primary signal conductors in the first plane, and the impedance of any lead or lead pair is arbitrarily set at the assembly process by connecting the auxiliary conductors to ground or by leaving them floating. Differential pairs of signal conductors, either odd or even mode are set by connecting the auxiliary conductors to a ground contact.Type: GrantFiled: April 10, 2003Date of Patent: November 7, 2006Assignee: Texas Instruments IncorporatedInventors: Michael A. Lamson, Heping Yue
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Publication number: 20060244154Abstract: A semiconductor device has a semiconductor chip with a periphery and an IC organized in a core portion and a peripheral portion. The IC has a top level of interconnecting metal traces (510) from the peripheral portion to the core portion; the traces are covered by an insulating overcoat (520) which has peripheral windows to expose bond pads. The circuit further has at least one level of metal lines (511) on top of the insulating overcoat; the lines lead from the chip periphery towards the chip core, wherein each line (511) is substantially parallel to one of the traces (510) underneath the insulating overcoat and vertically aligned therewith. After assembling the chip onto a leadframe with segments (504), bonding wires (502) connect the bond pads (510a) and the metal lines (511a) with the segments.Type: ApplicationFiled: April 29, 2005Publication date: November 2, 2006Inventors: Howard Test, Michael Lamson
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Publication number: 20060063304Abstract: A high-performance, high I/O ball grid array substrate, designed for integrated circuit flip-chip assembly and having two patterned metal layers, comprising: an insulating layer having a first surface, a second surface and a plurality of vias filled with metal. Said first surface having one of said metal layers attached to provide electrical ground potential, and having a plurality of electrically insulated openings for outside electrical contacts. An outermost insulating film protecting the exposed surface of said ground layer, said film having a plurality of openings filled with metal suitable for solder ball attachment. Said second surface having the other of said metal layers attached, portions thereof being configured as a plurality of electrical signal lines, further portions as a plurality of first electrical power lines, and further portions as a plurality of second electrical power lines, selected signal and power lines being in contact with said vias.Type: ApplicationFiled: November 7, 2005Publication date: March 23, 2006Inventors: Michael Lamson, Navinchandra Kalidas
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Patent number: 6995037Abstract: A high-performance, high I/O ball grid array substrate, designed for integrated circuit flip-chip assembly and having two patterned metal layers, comprising: an insulating layer having a first surface, a second surface and a plurality of vias filled with metal. Said first surface having one of said metal layers attached to provide electrical ground potential, and having a plurality of electrically insulated openings for outside electrical contacts. An outermost insulating film protecting the exposed surface of said ground layer, said film having a plurality of openings filled with metal suitable for solder ball attachment. Said second surface having the other of said metal layers attached, portions thereof being configured as a plurality of electrical signal lines, further portions as a plurality of first electrical power lines, and further portions as a plurality of second electrical power lines, selected signal and power lines being in contact with said vias.Type: GrantFiled: December 1, 2003Date of Patent: February 7, 2006Assignee: Texas Instruments IncorporatedInventors: Michael A. Lamson, Navinchandra Kalidas
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Publication number: 20050133901Abstract: A system for delivering power to a semiconductor device includes a package substrate comprising a substrate top surface and a substrate bottom surface. The system includes a connector formed on the substrate top surface and a cable coupled to the connector. The cable is operable to deliver power and ground to a top of the package substrate.Type: ApplicationFiled: December 17, 2003Publication date: June 23, 2005Inventors: Darvin Edwards, Michael Lamson, Gregory Howard
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Patent number: 6822340Abstract: A semiconductor device having reduced self and mutual capacitance of bonded wires is provided by coating the wires with a foamed polymer effectively having a very low dielectric constant. Additional benefits are realized by electrically insulating the wires against short-circuiting, by cushioning, the wires with a low modulus sheath, and by protecting chip bond pad metallization.Type: GrantFiled: November 19, 2001Date of Patent: November 23, 2004Assignee: Texas Instruments IncorporatedInventors: Michael A. Lamson, Homer B. Klonis
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Patent number: 6820046Abstract: According to the electrical modeling system and method provided by the present invention, the electronic structure to be modeled is segmented into an ordered sequence of segments, each segment is electrically analyzed individually, and the resulting data is collated, or integrated back again whereby the model output is preferably created in a format generally suitable for electrical models of integrated circuits. Examples of electronic structures which can be modeled by the system and method of the invention include leadframes, packages, complete devices, and electronic devices assembled on motherboards.Type: GrantFiled: January 14, 2000Date of Patent: November 16, 2004Assignee: Texas Instruments IncorporatedInventors: Michael A. Lamson, Subhendu Kundu, Ramani Ramesh
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Publication number: 20040207096Abstract: A semiconductor device having reduced self and mutual capacitance of bonded wires is provided by coating the wires with a foamed polymer effectively having a very low dielectric constant. Additional benefits are realized by electrically insulating the wires against short-circuiting, by cushioning the wires with a low modulus sheath, and by protecting chip bond pad metallization.Type: ApplicationFiled: May 3, 2004Publication date: October 21, 2004Inventors: Michael A. Lamson, Homer B. Klonis
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Patent number: 6794743Abstract: A high-performance, high I/O ball grid array substrate, designed for integrated circuit flip-chip assembly and having two patterned metal layers, comprising: an insulating layer having a first surface, a second surface and a plurality of vias filled with metal. Said first surface having one of said metal layers attached to provide electrical ground potential, and having a plurality of electrically insulated openings for outside electrical contacts. An outermost insulating film protecting the exposed surface of said ground layer, said film having a plurality of openings filled with metal suitable for solder ball attachment. Said second surface having the other of said metal layers attached, portions thereof being configured as a plurality of electrical signal lines, further portions as a plurality of first electrical power lines, and further portions as a plurality of second electrical power lines, selected signal and power lines being in contact with said vias.Type: GrantFiled: August 3, 2000Date of Patent: September 21, 2004Assignee: Texas Instruments IncorporatedInventors: Michael A. Lamson, Navinchandra Kalidas
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Publication number: 20040108586Abstract: A high-performance, high I/O ball grid array substrate, designed for integrated circuit flip-chip assembly and having two patterned metal layers, comprising: an insulating layer having a first surface, a second surface and a plurality of vias filled with metal. Said first surface having one of said metal layers attached to provide electrical ground potential, and having a plurality of electrically insulated openings for outside electrical contacts. An outermost insulating film protecting the exposed surface of said ground layer, said film having a plurality of openings filled with metal suitable for solder ball attachment. Said second surface having the other of said metal layers attached, portions thereof being configured as a plurality of electrical signal lines, further portions as a plurality of first electrical power lines, and further portions as a plurality of second electrical power lines, selected signal and power lines being in contact with said vias.Type: ApplicationFiled: December 1, 2003Publication date: June 10, 2004Inventors: Michael A. Lamson, Navinchandra Kalidas
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Publication number: 20030201519Abstract: A semiconductor package having a plurality of conductors arrayed in two (or more) parallel planes, and an available ground conductor. Conductors in the auxiliary or second plane substantially overlay the primary signal conductors in the first plane, and the impedance of any lead or lead pair is arbitrarily set at the assembly process by connecting the auxiliary conductors to ground or by leaving them floating. Differential pairs of signal conductors, either odd or even mode are set by connecting the auxiliary conductors to a ground contact.Type: ApplicationFiled: April 10, 2003Publication date: October 30, 2003Inventors: Michael A. Lamson, Heping Yue
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Patent number: 6563208Abstract: A semiconductor package having a plurality of conductors arrayed in two (or more) parallel planes, and an available ground conductor. Conductors in the auxiliary or second plane substantially overlay the primary signal conductors in the first plane, and the impedance of any lead or lead pair is arbitrarily set at the assembly process by connecting the auxiliary conductors to ground or by leaving them floating. Differential pairs of signal conductors, either odd or even mode are set by connecting the auxiliary conductors to a ground contact.Type: GrantFiled: December 28, 2000Date of Patent: May 13, 2003Assignee: Texas Instruments IncorporatedInventors: Michael A. Lamson, Heping Yue
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Patent number: 6518663Abstract: An electrical connection web, operable at high frequency and configured on a dielectric substrate, comprising a plurality of generally parallel signal lines having graduated width and variable spacings, and said widths and spacings cooperatively selected such that the characteristic impedance of said signal lines is approximately the same for each line of said plurality and approximately constant over the length of each said signal line, whereby signal integrity for each said line is enhanced and cross talk between said lines is reduced.Type: GrantFiled: August 28, 2000Date of Patent: February 11, 2003Assignee: Texas Instruments IncorporatedInventors: Richard D. James, Michael A. Lamson
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Patent number: 6424027Abstract: A semiconductor package substrate for assembling an integrated circuit chip operable at fast ramp rate signals and clock rates, comprising an insulating support having a region for attaching said chip; a pattern of electrical interconnections, disposed on said substrate in one metallization level and operable for transmitting waveforms; and a low pass filter for removing unwanted high frequency components from said transmitted waveforms, comprising a network of inductors and capacitors formed within said one metallization level and positioned substantially within said substrate region for chip attachment.Type: GrantFiled: September 12, 2000Date of Patent: July 23, 2002Assignee: Texas Instruments IncorporatedInventors: Michael A. Lamson, Heping Yue, Truong Ho
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Publication number: 20020089069Abstract: A semiconductor device having reduced self and mutual capacitance of bonded wires is provided by coating the wires with a foamed polymer effectively having a very low dielectric constant. Additional benefits are realized by electrically insulating the wires against short-circuiting, by cushioning, the wires with a low modulus sheath, and by protecting, protecting chip bond pad metallization.Type: ApplicationFiled: November 19, 2001Publication date: July 11, 2002Inventors: Michael A. Lamson, Homer B. Klonis