Patents by Inventor Kenneth D. Brennan
Kenneth D. Brennan 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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Publication number: 20120205753Abstract: A micro-electromechanical system (MEMS) device includes a substrate, a first beam, a second beam, and a third beam. The first beam includes first and second portions separated by an isolation joint. The first and second portions each comprise a semiconductor and a first dielectric layer. An electrically conductive trace is mechanically coupled to the first beam and electrically coupled to the second portion's semiconductor but not the first portion's semiconductor. The second beam includes a second dielectric layer. The profile of each of the first, second, and third beams has been formed by a dry etch. A cavity separates a surface of the substrate from the first, second, and third beams. The cavity has been formed by a dry etch. A side wall of each of the first, second, and third beams has substantially no dielectric layer disposed thereon, and the dielectric layer has been removed by a vapor-phase etch.Type: ApplicationFiled: February 14, 2011Publication date: August 16, 2012Applicant: Kionix, Inc.Inventors: Scott G. ADAMS, Andrew J. Minnick, Charles W. Blackmer, Kenneth D. Brennan, Mollie K. Devoe
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Patent number: 7969274Abstract: An inductor structure (102) formed in an integrated circuit (100) is disclosed, and includes a first isolation layer (106) and a first core plate (104) disposed over or within the first isolation layer (106, 114). The first core plate (104) includes a plurality of electrically coupled conductive traces composed of a conductive ferromagnetic material layer. A second isolation layer (108) overlies the first isolation layer and an inductor coil (102) composed of a conductive material layer (118) is formed within the second isolation layer (108). Another core plate may be formed over the coil. The one or more core plates increase an inductance (L) of the inductor coil (102).Type: GrantFiled: September 2, 2008Date of Patent: June 28, 2011Assignee: Texas Instruments IncorporatedInventors: Kenneth D. Brennan, Satyavolu S. Papa Rao, Byron Williams
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Publication number: 20090002115Abstract: An inductor structure (102) formed in an integrated circuit (100) is disclosed, and includes a first isolation layer (106) and a first core plate (104) disposed over or within the first isolation layer (106, 114). The first core plate (104) includes a plurality of electrically coupled conductive traces composed of a conductive ferromagnetic material layer. A second isolation layer (108) overlies the first isolation layer and an inductor coil (102) composed of a conductive material layer (118) is formed within the second isolation layer (108). Another core plate may be formed over the coil. The one or more core plates increase an inductance (L) of the inductor coil (102).Type: ApplicationFiled: September 2, 2008Publication date: January 1, 2009Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Kenneth D. Brennan, Satyavolu S. Papa Rao, Byron Williams
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Patent number: 7436281Abstract: An inductor structure (102) formed in an integrated circuit (100) is disclosed, and includes a first isolation layer (106) and a first core plate (104) disposed over or within the first isolation layer (106, 114). The first core plate (104) includes a plurality of electrically coupled conductive traces composed of a conductive ferromagnetic material layer. A second isolation layer (108) overlies the first isolation layer and an inductor coil (102) composed of a conductive material layer (118) is formed within the second isolation layer (108). Another core plate may be formed over the coil. The one or more core plates increase an inductance (L) of the inductor coil (102).Type: GrantFiled: July 30, 2004Date of Patent: October 14, 2008Assignee: Texas Instruments IncorporatedInventors: Kenneth D. Brennan, Satyavolu S. Papa Rao, Byron Williams
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Patent number: 7397107Abstract: An integrated circuit capacitor having a bottom plate 50a, a dielectric layer 250?, and a ferromagnetic top plate 20a.Type: GrantFiled: January 26, 2006Date of Patent: July 8, 2008Assignee: Texas Instruments IncorporatedInventors: Kenneth D. Brennan, Satyavolu S. Papa Rao
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Patent number: 7250334Abstract: A method (10) of forming a MIM (metal insulator metal) capacitor is disclosed whereby adverse affects associated with copper diffusion are mitigated even as the capacitor is scaled down. A sidewall spacer (156) is formed against an edge (137) of a layer of bottom electrode/copper diffusion barrier material (136), an edge (151) of a layer of capacitor dielectric material (150) and at least some of an edge (153) of a layer of top electrode material. The sidewall spacer (156) is dielectric or non-conductive and mitigates “shorting” currents that can develop between the plates as a result of copper diffusion. Bottom electrode diffusion barrier material (136) mitigates copper diffusion and/or copper drift, thereby reducing the likelihood of premature device failure.Type: GrantFiled: July 31, 2004Date of Patent: July 31, 2007Assignee: Texas Instruments IncorporatedInventors: Darius L. Crenshaw, Byron L. Williams, Alwin Tsao, Hisashi Shichijo, Satyavolu S. Papa Rao, Kenneth D. Brennan, Steven A. Lytle
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Patent number: 7189615Abstract: The formation of a MIM (metal insulator metal) capacitor (164) and concurrent formation of a resistor (166) is disclosed. A copper diffusion barrier (124) is formed over a copper deposition (110) that serves as a bottom electrode (170) of the capacitor (164). The copper diffusion barrier (124) mitigates unwanted diffusion of copper from the copper deposition (110), and is formed via electro-less deposition such that little to none of the barrier material is deposited at locations other than over a top surface (125) of the deposition of copper/bottom electrode. Subsequently, layers of dielectric (150) and conductive (152) materials are applied to form a dielectric (172) and top electrode (174) of the MIM capacitor (164), respectively, where the layer of conductive top electrode material (152) also functions to concurrently develop the resistor (166) on the same chip as the capacitor (164).Type: GrantFiled: January 18, 2005Date of Patent: March 13, 2007Assignee: Texas Instruments IncorporatedInventors: Satyavolu Srinivas Papa Rao, Darius Lammont Crenshaw, Stephan Grunow, Kenneth D. Brennan, Somit Joshi, Montray Leavy, Phillip D. Matz, Sameer Kumar Ajmera, Yuri E. Solomentsev
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Patent number: 7118925Abstract: A method of manufacturing an integrated circuit on a semiconductor wafer. The method comprising forming a bottom plate of a capacitor 50a and a bottom portion of an induction coil 50a, forming an etch stop layer 250?, forming a ferromagnetic capacitor top plate 20a and a ferromagnetic core 20b, forming a top portion of the induction coil 50b plus vias 50c that couple the top portion of the induction coil 50b to the bottom portion of the induction coil 50c.Type: GrantFiled: December 10, 2004Date of Patent: October 10, 2006Assignee: Texas Instruments IncorporatedInventors: Kenneth D. Brennan, Satyavolu S. Papa Rao
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Patent number: 7109838Abstract: An inductor integrated in a semiconductor device comprises a first and second lower electrical trace, an upper electrical trace, aligned at a first end with a first end of the first lower electrical trace and at a second end with a second end of the second lower electrical trace, a first via intercoupling the first end of the upper electrical trace with the first end of the first lower electrical trace, and a second via intercoupling the second end of the upper electrical trace with the second end of the second lower electrical trace.Type: GrantFiled: September 10, 2001Date of Patent: September 19, 2006Assignee: Texas Instruments IncorporatedInventors: Kenneth D. Brennan, Douglas A. Prinslow, David B. Aldrich
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Patent number: 6984580Abstract: An embodiment of the invention is a dual damascene layer 13 of an integrated circuit 2 containing a dual damascene pattern liner 21. Another embodiment of the invention is a method of manufacturing dual damascene layer 13 where a dual damascene pattern liner 21 is formed over a cap layer 25 and within via holes. Yet another embodiment of the invention is a method of manufacturing dual damascene layer 13 where a dual damascene pattern liner 21 is formed over a cap layer 25 and within trench spaces.Type: GrantFiled: February 26, 2004Date of Patent: January 10, 2006Assignee: Texas Instruments IncorporatedInventors: William W. Dostalik, Robert Kraft, Kenneth D. Brennan
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Patent number: 6951812Abstract: The structure and the fabrication method of an integrated circuit in the horizontal surface of a semiconductor body comprising a dielectric layer over said semiconductor body and a substantially vertical hole through the dielectric layer, the hole having sidewalls and a bottom. A barrier layer is positioned over the dielectric layer including the sidewalls within the hole and the bottom of the hole; the barrier layer is operable to seal copper. A copper-doped transition layer is positioned over the barrier layer; the transition layer has a resistivity higher than pure copper and is operable to strongly bond to copper and to the barrier layer, whereby electomigration reliability is improved. The remainder of said hole is filled with copper. The hole can be either a trench or a trench and a via.Type: GrantFiled: December 17, 2003Date of Patent: October 4, 2005Assignee: Texas Instruments IncorporatedInventors: Qing-Tang Jiang, Robert Tsu, Kenneth D. Brennan
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Patent number: 6911389Abstract: Methods are disclosed for forming vias, trenches, and interconnects through diffusion barrier, etch-stop, and dielectric materials for interconnection of electrical devices in dual damascene structures of a semiconductor device. A buried via mask at the etch-stop level provides openings with two or more adjacent via misalignment error regions merged into rectangular windows aligned orthogonal to a long axis of the underlying conductive features of a first metal level. The rectangular windows used together with openings in a hard mask form via portions, and the openings in the hard mask provide trench portions. Via and trench portions coincide during trench or via etch, as well as during hard mask or etch-stop layer etch together forming an interconnect cavity, which may then be filled with a conductive material to provide a conductive interconnect between the conductive feature of the first metal level and a second metal level.Type: GrantFiled: September 18, 2002Date of Patent: June 28, 2005Assignee: Texas Instruments IncorporatedInventors: Kenneth D. Brennan, Paul Gillespie
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Patent number: 6903918Abstract: A shielded planar capacitor structure (202) is discussed, formed within a Faraday cage (210) in an integrated circuit device (200). The capacitor structure (202) reduces parasitic capacitances within the integrated circuit device (200). The capacitor (202) comprises a capacitor stack (102) formed between a first and second metal layers (230,232) of the integrated circuit. The capacitor stack (102) has a first conductive layer formed from a third metal layer (106) disposed between the first and second metal layers (230,232) of the integrated circuit, a dielectric isolation layer (110) disposed upon the first conductive layer (106); and a second conductive layer (112) disposed upon the dielectric isolation layer (110) and overlying the first conductive layer (106). The structure (202) further has a first and second isolation layers (104,114) disposed upon opposite sides of the capacitor stack (102).Type: GrantFiled: April 20, 2004Date of Patent: June 7, 2005Assignee: Texas Instruments IncorporatedInventor: Kenneth D. Brennan
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Publication number: 20040222529Abstract: An embodiment of the invention is a dual damascene layer 13 of an integrated circuit 2 containing a dual damascene pattern liner 21. Another embodiment of the invention is a method of manufacturing dual damascene layer 13 where a dual damascene pattern liner 21 is formed over a cap layer 25 and within via holes. Yet another embodiment of the invention is a method of manufacturing dual damascene layer 13 where a dual damascene pattern liner 21 is formed over a cap layer 25 and within trench spaces.Type: ApplicationFiled: February 26, 2004Publication date: November 11, 2004Inventors: William W. Dostalik, Robert Kraft, Kenneth D. Brennan
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Publication number: 20040222527Abstract: An embodiment of the invention is a dual damascene layer 13 of an integrated circuit 2 containing a dual damascene pattern liner 21. Another embodiment of the invention is a method of manufacturing dual damascene layer 13 where a dual damascene pattern liner 21 is formed over a cap layer 25 and within via holes. Yet another embodiment of the invention is a method of manufacturing dual damascene layer 13 where a dual damascene pattern liner 21 is formed over a cap layer 25 and within trench spaces.Type: ApplicationFiled: May 6, 2003Publication date: November 11, 2004Inventors: William W. Dostalik, Robert Kraft, Kenneth D. Brennan
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Patent number: 6787875Abstract: A method of forming a via in an integrated circuit is provided. The method includes forming a stack including a first layer, a hard mask layer, and at least one intermediate layer disposed between the first layer and the hard mask layer. The first layer comprises a first metal line. The method further includes forming a channel in the hard mask layer. The channel has a first side and a second side opposite the first side. The method further includes forming a resist layer having an opening extending over both the first and second sides of the channel. The method further includes forming a metal line trench and a via opening aligned with the first and second sides of the channel. The method further includes filling the filling the metal line trench and the via opening with a conductive material to create a second metal line and a via connecting the second metal line with the first metal line.Type: GrantFiled: August 5, 2002Date of Patent: September 7, 2004Assignee: Texas Instruments IncorporatedInventors: Kenneth D. Brennan, Paul M. Gillespie
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Publication number: 20040132282Abstract: The structure and the fabrication method of an integrated circuit in the horizontal surface of a semiconductor body comprising a dielectric layer over said semiconductor body and a substantially vertical hole through the dielectric layer, the hole having sidewalls and a bottom. A barrier layer is positioned over the dielectric layer including the sidewalls within the hole and the bottom of the hole; the barrier layer is operable to seal copper. A copper-doped transition layer is positioned over the barrier layer; the transition layer has a resistivity higher than pure copper and is operable to strongly bond to copper and to the barrier layer, whereby electomigration reliability is improved. The remainder of said hole is filled with copper. The hole can be either a trench or a trench and a via.Type: ApplicationFiled: December 17, 2003Publication date: July 8, 2004Inventors: Qing-Tang Jiang, Robert Tsu, Kenneth D. Brennan
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Publication number: 20040053501Abstract: Methods are disclosed for forming vias, trenches, and interconnects through diffusion barrier, etch-stop, and dielectric materials for interconnection of electrical devices in dual damascene structures of a semiconductor device. A buried via mask at the etch-stop level provides openings with two or more adjacent via misalignment error regions merged into rectangular windows aligned orthogonal to a long axis of the underlying conductive features of a first metal level. The rectangular windows used together with openings in a hard mask form via portions, and the openings in the hard mask provide trench portions. Via and trench portions coincide during trench or via etch, as well as during hard mask or etch-stop layer etch together forming an interconnect cavity, which may then be filled with a conductive material to provide a conductive interconnect between the conductive feature of the first metal level and a second metal level.Type: ApplicationFiled: September 18, 2002Publication date: March 18, 2004Inventors: Kenneth D. Brennan, Paul Gillespie
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Patent number: 6693356Abstract: The structure and the fabrication method of an integrated circuit in the horizontal surface of a semiconductor body comprising a dielectric layer over said semiconductor body and a substantially vertical hole through the dielectric layer, the hole having sidewalls and a bottom. A barrier layer is positioned over the dielectric layer including the sidewalls within the hole and the bottom of the hole; the barrier layer is operable to seal copper. A copper-doped transition layer is positioned over the barrier layer; the transition layer has a resistivity higher than pure copper and is operable to strongly bond to copper and to the barrier layer, whereby electomigration reliability is improved. The remainder of said hole is filled with copper. The hole can be either a trench or a trench and a via.Type: GrantFiled: March 27, 2002Date of Patent: February 17, 2004Assignee: Texas Instruments IncorporatedInventors: Qing-Tang Jiang, Robert Tsu, Kenneth D. Brennan
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Publication number: 20040021196Abstract: A method of forming a via in an integrated circuit is provided. The method includes forming a stack including a first layer, a hard mask layer, and at least one intermediate layer disposed between the first layer and the hard mask layer. The first layer comprises a first metal line. The method further includes forming a channel in the hard mask layer. The channel has a first side and a second side opposite the first side. The method further includes forming a resist layer having an opening extending over both the first and second sides of the channel. The method further includes forming a metal line trench and a via opening aligned with the first and second sides of the channel. The method further includes filling the filling the metal line trench and the via opening with a conductive material to create a second metal line and a via connecting the second metal line with the first metal line.Type: ApplicationFiled: August 5, 2002Publication date: February 5, 2004Applicant: Texas Instruments IncorporatedInventors: Kenneth D. Brennan, Paul M. Gillespie