Having Underpass Or Crossunder Patents (Class 438/280)
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Patent number: 9178065Abstract: Systems and methods are provided for fabricating semiconductor device structures on a substrate. For example, a substrate including a first region and a second region is provided. One or more first semiconductor device structures are formed on the first region. One or more semiconductor fins are formed on the second region. One or more second semiconductor device structures are formed on the semiconductor fins. A top surface of the semiconductor fins is higher than a top surface of the first semiconductor device structures.Type: GrantFiled: August 1, 2013Date of Patent: November 3, 2015Assignee: Taiwan Semiconductor Manufacturing Company LimitedInventors: Chi-Wen Liu, Chao-Hsiung Wang
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Patent number: 9048301Abstract: A transistor device and method for forming a nanowire field effect transistor (FET) device are provided. A device layer including a source region and a drain region is formed, where the source region and the drain region are connected by a suspended nanowire channel. Etch stop layers are formed beneath the source region and the drain region. The etch stop layers comprise support structures interposed between a semiconductor substrate and the source and drain regions. The suspended nanowire channel is formed by etching a sacrificial material beneath the suspended nanowire channel. The etching is selective to the sacrificial material to prevent the removal of the etch stop layers beneath the source region and the drain region.Type: GrantFiled: October 16, 2013Date of Patent: June 2, 2015Assignee: Taiwan Semiconductor Manufacturing Company LimitedInventors: Chien-Hsun Wang, Mao-Lin Huang, Chun-Hsiung Lin, Jean-Pierre Colinge
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Patent number: 8946018Abstract: Some embodiments include methods of forming semiconductor constructions. A heavily-doped region is formed within a first semiconductor material, and a second semiconductor material is epitaxially grown over the first semiconductor material. The second semiconductor material is patterned to form circuit components, and the heavily-doped region is patterned to form spaced-apart buried lines electrically coupling pluralities of the circuit components to one another. At least some of the patterning of the heavily-doped region occurs simultaneously with at least some of the patterning of the second semiconductor material.Type: GrantFiled: August 21, 2012Date of Patent: February 3, 2015Assignee: Micron Technology, Inc.Inventors: Jaydip Guha, Shyam Surthi
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Patent number: 8916460Abstract: Semiconductor devices may include a semiconductor substrate with a first semiconductor fin aligned end-to-end with a second semiconductor with a recess between facing ends of the first and second semiconductor fins. A first insulator pattern is formed adjacent sidewalls of the first and second semiconductor fins and a second insulator pattern is formed within the first recess. The second insulator pattern may have a top surface higher than a top surface of the first insulator pattern, such as to the height of the top surface of the fins (or higher or lower). First and second gates extend along sidewalls and a top surface of the first semiconductor fin. A dummy gate electrode may be formed on the top surface of the second insulator. Methods for manufacture of the same and modifications are also disclosed.Type: GrantFiled: May 5, 2014Date of Patent: December 23, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Byoung-Ho Kwon, Cheol Kim, Ho-Young Kim, Se-Jung Park, Myeong-Cheol Kim, Bo-Kyeong Kang, Bo-Un Yoon, Jae-Kwang Choi, Si-Young Choi, Suk-Hoon Jeong, Geum-Jung Seong, Hee-Don Jeong, Yong-Joon Choi, Ji-Eun Han
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Patent number: 8900951Abstract: A method for fabricating a semiconductor device comprises forming a nanowire on an insulator layer at a surface of a substrate; forming a dummy gate over a portion of the nanowire and a portion of the insulator layer; forming recesses in the insulator layer on opposing sides of the dummy gate; forming spacers on opposing sides of the dummy gate; forming source regions and drain regions in the recesses in the insulator layer on opposing sides of the dummy gate; depositing an interlayer dielectric on the source regions and the drain regions; removing the dummy gate to form a trench; removing the insulator layer under the nanowire such that a width of the trench underneath the nanowire is equal to or less than a distance between the spacers; and forming a replacement gate in the trench.Type: GrantFiled: September 24, 2013Date of Patent: December 2, 2014Assignee: International Business Machines CorporationInventors: Kangguo Cheng, Bruce B. Doris, Pouya Hashemi, Ali Khakifirooz, Alexander Reznicek
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Patent number: 8847282Abstract: A semiconductor device includes a semiconductor substrate including a well having a first conductivity type defined by a device isolation region, a gate insulating film formed on the semiconductor substrate, a gate electrode formed on the gate insulating film and including a first side surface and a second side surface facing the first side surface, and a first side wall insulating film formed on the first side surface and a second side wall insulating film formed on the second side surface.Type: GrantFiled: January 28, 2014Date of Patent: September 30, 2014Assignee: Fujitsu Semiconductor LimitedInventors: Masaki Haneda, Yuka Kase, Masanori Terahara, Takayuki Aoyama
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Patent number: 8796860Abstract: A semiconductor device includes a substrate, a multi-layer wiring layer formed on the substrate, and including a signal line and ground lines extending above the signal line, one of the ground lines extending toward a direction in a layer and another one of the ground lines extending from the one of the ground lines toward another direction in the layer, a first pad on the multi-layer wiring layer, and a redistribution layer formed on the multi-layer wiring layer, including a second pad, a redistribution line coupling the first pad and the second pad, and an insulation film covering the redistribution line.Type: GrantFiled: January 28, 2013Date of Patent: August 5, 2014Assignee: Renesas Electronics CorporationInventors: Yuji Tada, Tsuyoshi Hirakawa, Hironori Nakamura, Takayuki Kurokawa
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Patent number: 8753939Abstract: A system and method for making semiconductor die connections with through-silicon vias (TSVs) are disclosed. TSVs are formed through the substrate to allow for signal connections as well as power and ground connections. In one embodiment this allows these connections to be made throughout the substrate instead of on the periphery of the substrate. In another embodiment, the TSVs are used as part of a power matrix to supply power and ground connections to the active devices and metallization layers through the substrate.Type: GrantFiled: August 2, 2013Date of Patent: June 17, 2014Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Oscar M. K. Law, Kuo H. Wu
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Patent number: 8735251Abstract: A through silicon via structure and a method of fabricating the through silicon via. The method includes: (a) forming a trench in a silicon substrate, the trench open to a top surface of the substrate; (b) forming a silicon dioxide layer on sidewalls of the trench, the silicon dioxide layer not filling the trench; (c) filling remaining space in the trench with polysilicon; after (c), (d) fabricating at least a portion of a CMOS device in the substrate; (e) removing the polysilicon from the trench, the dielectric layer remaining on the sidewalls of the trench; (f) re-filling the trench with an electrically conductive core; and after (f), (g) forming one or more wiring layers over the top surface of the substrate, a wire of a wiring level of the one or more wiring levels closest to the substrate contacting a top surface of the conductive core.Type: GrantFiled: October 4, 2013Date of Patent: May 27, 2014Assignee: Ultratech, Inc.Inventors: Paul Stephen Andry, Edmund Juris Sprogis, Cornelia Kang-I Tsang
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Patent number: 8709896Abstract: A semiconductor device includes a semiconductor substrate including a well having a first conductivity type defined by a device isolation region, a gate insulating film formed on the semiconductor substrate, a gate electrode formed on the gate insulating film and including a first side surface and a second side surface facing the first side surface, and a first side wall insulating film formed on the first side surface and a second side wall insulating film formed on the second side surface.Type: GrantFiled: April 5, 2012Date of Patent: April 29, 2014Assignee: Fujitsu Semiconductor LimitedInventors: Masaki Haneda, Yuka Kase, Masanori Terahara, Takayuki Aoyama
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Patent number: 8237287Abstract: A semiconductor device includes a substrate over which a circuit is formed, a multi-layer wiring layer having a plurality of wiring layers formed over the substrate and a pad formed in a predetermined location of an uppermost layer of the wiring layers, a new pad provided in an appropriate location over the multi-layer wiring layer, and a redistribution layer provided with a redistribution line coupling the new pad and the pad. In the semiconductor device: the multi-layer wiring layer includes a signal line for transmitting an electric signal to the circuit and a ground line provided in a wiring layer between the redistribution line or the new pad and the circuit; the ground line is formed to correspond to a location where the new pad is assumed to be located and a route along which the redistribution line is assumed to be formed; and the redistribution line is formed along at least a portion of the ground line.Type: GrantFiled: February 28, 2011Date of Patent: August 7, 2012Assignee: Renesas Electronics CorporationInventors: Yuji Tada, Tsuyoshi Hirakawa, Hironori Nakamura, Takayuki Kurokawa
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Patent number: 8097514Abstract: A support material for a semiconductor device is processed. An opening having a width is etched into the support material for the semiconductor device using a first etch mask. A portion of the opening is etched using a second etch mask without alignment thereof to the width of the opening.Type: GrantFiled: September 23, 2009Date of Patent: January 17, 2012Assignee: Round Rock Research, LLCInventors: Charles H. Dennison, Trung T. Doan
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Patent number: 8058114Abstract: A gate line includes a first seed layer formed on a base substrate and a first metal layer formed on the first seed layer. A first insulation layer is formed on the base substrate. A second insulation layer is formed on the base substrate. Here, a line trench is formed through the second insulation layer in a direction crossing the gate line. A data line includes a second seed layer formed below the line trench and a second metal layer formed in the line trench. A pixel electrode is formed in a pixel area of the base substrate. Therefore, a trench of a predetermined depth is formed using an insulation layer and a metal layer is formed through a plating method, so that a metal line having a sufficient thickness may be formed.Type: GrantFiled: June 9, 2010Date of Patent: November 15, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Jang-Soo Kim, Hong-Long Ning, Bong-Kyun Kim, Hong-Sick Park, Shi-Yul Kim, Chang-Oh Jeong, Sang-Gab Kim, Jae-Hyoung Youn, Woo-Geun Lee, Yang-Ho Bae, Pil-Sang Yun, Jong-Hyun Choung, Sun-Young Hong, Ki-Won Kim, Byeong-Jin Lee, Young-Wook Lee, Jong-In Kim, Byeong-Beom Kim, Nam-Seok Suh
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Patent number: 8053846Abstract: A transistor includes: a semiconductor substrate; a channel region arranged on the semiconductor substrate; a source and a drain respectively arranged on either side of the channel region; and a conductive nano tube gate arranged on the semiconductor substrate to transverse the channel region between the source and the drain. Its method of manufacture includes: arranging a conductive nano tube on a surface of a semiconductor substrate; defining source and drain regions having predetermined sizes and traversing the nano tube; forming a metal layer on the source and drain regions; removing a portion of the metal layer formed on the nano tube to respectively form source and drain electrodes separated from the metal layer on either side of the nano tube; and doping a channel region below the nano tube arranged between the source and drain electrodes by ion-implanting.Type: GrantFiled: July 12, 2007Date of Patent: November 8, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Seung-Nam Cha, Jae-Eun Jang, Jae-Eun Jung, Yong-Wan Jin, Byong-Gwon Song
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Patent number: 8022501Abstract: The present invention relates to a semiconductor device and a method for isolating the same. The semiconductor device includes: a silicon substrate provided with a trench including at least one silicon pillar at a bottom portion of the trench, wherein the silicon pillar become sidewalls of micro trenches; and a device isolation layer selectively and partially filled into the plurality of micro trenches.Type: GrantFiled: July 16, 2009Date of Patent: September 20, 2011Assignee: Hynix Semiconductor Inc.Inventor: Seung-Ho Pyi
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Patent number: 7977196Abstract: A semiconductor device includes an active region defining at least four surfaces, the four surfaces including first, second, third, and fourth surfaces, a gate insulation layer formed around the four surfaces of the active region, and a gate electrode formed around the gate insulation layer and the four surfaces of the active region.Type: GrantFiled: December 28, 2009Date of Patent: July 12, 2011Assignee: Hynix Semiconductor Inc.Inventor: Jun-Hee Cho
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Patent number: 7977749Abstract: A semiconductor device includes an active region defining at least four surfaces, the four surfaces including first, second, third, and fourth surfaces, a gate insulation layer formed around the four surfaces of the active region, and a gate electrode formed around the gate insulation layer and the four surfaces of the active region.Type: GrantFiled: December 28, 2009Date of Patent: July 12, 2011Assignee: Hynix Semiconductor Inc.Inventor: Jun-Hee Cho
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Patent number: 7973360Abstract: An integrated circuit device comprising a diode and a method of making an integrated circuit device comprising a diode are provided. The diode can comprise an island of a first conductivity type, a first region of a second conductivity type formed in the island, and a cathode diffusion contact region doped to the second conductivity type disposed in the first region. The diode can also comprise a cathode contact electrically contacting the cathode diffusion contact region, an anode disposed in the island, an anode contact electrically contacting the anode, and a first extension region doped to the first conductivity type disposed at a surface junction between the first region and the island.Type: GrantFiled: April 6, 2010Date of Patent: July 5, 2011Assignee: Intersil Americas Inc.Inventor: James Douglas Beasom
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Patent number: 7919378Abstract: According to some embodiments of the invention, a fin type transistor includes an active structure integrally formed with a silicon substrate. The active structure includes grooves that form blocking regions under source/drain regions. A gate structure is formed to cross the upper face of the active structure and to cover the exposed side surfaces of the lateral portions of the active structure. An effective channel length of a fin type transistor may be sufficiently ensured so that a short channel effect of the transistor may be prevented and the fin type transistor may have a high breakdown voltage.Type: GrantFiled: March 3, 2009Date of Patent: April 5, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Jae-Man Yoon, Choong-Ho Lee, Dong-Gun Park, Chul Lee
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Patent number: 7868461Abstract: The present invention relates to a semiconductor device comprising first and second active device regions that are located in a semiconductor substrate and are isolated from each other by an isolation region therebetween, while the semiconductor device comprises a first conductive interconnect structure that is embedded in the isolation region and connects the first active device region with the second active device region. The semiconductor device preferably contains at least one static random access memory (SRAM) cell located in the semiconductor substrate, and the first conductive interconnect structure cross-connects a pull-down transistor of the SRAM cell with a pull-up transistor thereof. The conductive interconnect preferably comprises doped polysilicon and can be formed by processing steps including photolithographic patterning, etching, and polysilicon deposition.Type: GrantFiled: June 4, 2009Date of Patent: January 11, 2011Assignee: International Business Machines CorporationInventors: Haining Yang, Thomas W. Dyer
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Patent number: 7863140Abstract: A molecular detection chip including a metal oxide silicon-field effect transistor (MOSFET) on sidewalls of a micro-fluid channel and a molecular detection device including the molecular detection chip are provided. A molecular detection method, particularly, qualification methods for the immobilization of molecular probes and the binding of a target sample to the molecular probes, using the molecular detection device, and a nucleic acid mutation assay device and method are also provided. The formation of the MOSFET on the sidewalls of the micro-fluid channel makes easier to highly integrate a molecular detection chip. In addition, immobilization of probes directly on the surface of a gate electrode ensures the molecular detection chip to check for the immobilization of probes and coupling of a target molecule to the probes in situ.Type: GrantFiled: May 31, 2007Date of Patent: January 4, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Geun-Bae Lim, Chin-Sung Park, Yoon-Kyoung Cho, Sun-Hee Kim
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Patent number: 7833842Abstract: Embodiments of the present invention are directed to mixed-scale electronic interfaces, included in integrated circuits and other electronic devices, that provide for dense electrical interconnection between microscale features of a predominantly microscale or submicroscale layer and nanoscale features of a predominantly nanoscale layer. A method is provided for fabricating a nanoscale/microscale interface having a microscale layer and a predominantly nanoscale layer.Type: GrantFiled: December 3, 2009Date of Patent: November 16, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventors: R. Stanley Williams, Gregory S. Snider, Duncan Stewart
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Patent number: 7812451Abstract: A semiconductor device includes a first wiring layer, a second wiring layer and a third wiring layer. The first wiring layer is formed on a semiconductor substrate. The second and the third wiring layer wiring layers are arranged in a direction intersecting with the first wiring layer on respective sides of the wiring layer. An air bridge wiring intersects the second and third wiring layers sandwiching an air layer above the first wiring layer therewith. The overall shape of the air bridge wiring has an upward convex curvature in an arch shape and the transverse sectional shape of the air bridge wiring is in the form of a downward concave curvature.Type: GrantFiled: April 22, 2008Date of Patent: October 12, 2010Assignee: Kabushiki Kaisha ToshibaInventor: Takashi Asano
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Patent number: 7800197Abstract: The present invention relates to a semiconductor device and a method of manufacture thereof, being capable of improving the high integration by increasing a cell region while securing the reliability of device and the process margin through forming a cell region and a core region with the stacking structure.Type: GrantFiled: June 5, 2008Date of Patent: September 21, 2010Assignee: Hynix Semiconductor Inc.Inventors: Yun Taek Hwang, Kwang Yong Lim
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Patent number: 7759728Abstract: An integrated circuit device comprising a diode and a method of making an integrated circuit device comprising a diode are provided. The diode can comprise an island of a first conductivity type, a first region of a second conductivity type formed in the island, and a cathode diffusion contact region doped to the second conductivity type disposed in the first region. The diode can also comprise a cathode contact electrically contacting the cathode diffusion contact region, an anode disposed in the island, an anode contact electrically contacting the anode, and a first extension region doped to the first conductivity type disposed at a surface junction between the first region and the island.Type: GrantFiled: May 6, 2008Date of Patent: July 20, 2010Assignee: Intersil Americas Inc.Inventor: James Douglas Beasom
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Patent number: 7741184Abstract: A fin-type field effect transistor (FinFET) has a fin having a center channel portion, end portions comprising source and drain regions, and channel extensions extending from sidewalls of the channel portion of the fin. The structure also includes a gate insulator covering the channel portion and the channel extensions, and a gate conductor on the gate insulator. The channel extensions increase capacitance of the channel portion of the fin.Type: GrantFiled: June 12, 2007Date of Patent: June 22, 2010Assignee: International Business Machines CorporationInventors: Brent A. Anderson, Andres Bryant, Edward J. Nowak
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Patent number: 7638398Abstract: A semiconductor device includes an active region defining at least four surfaces, the four surfaces including first, second, third, and fourth surfaces, a gate insulation layer formed around the four surfaces of the active region, and a gate electrode formed around the gate insulation layer and the four surfaces of the active region.Type: GrantFiled: December 28, 2006Date of Patent: December 29, 2009Assignee: Hynix Semiconductor Inc.Inventor: Jun-Hee Cho
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Publication number: 20090146246Abstract: The present invention relates to a semiconductor device and a method of manufacture thereof, being capable of improving the high integration by increasing a cell region while securing the reliability of device and the process margin through forming a cell region and a core region with the stacking structure.Type: ApplicationFiled: June 5, 2008Publication date: June 11, 2009Applicant: Hynix Semiconductor Inc.Inventors: Yun Taek Hwang, Kwan Yong Lim
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Patent number: 7540970Abstract: Methods of fabricating a semiconductor device are provided. Methods of forming a finer pattern of a semiconductor device using a buffer layer for retarding, or preventing, bridge formation between patterns in the formation of a finer pattern below resolution limits of a photolithography process by double patterning are also provided. A first hard mask layer and/or a second hard mask layer may be formed on a layer of a substrate to be etched. A first etch mask pattern of a first pitch may be formed on the second hard mask layer. After a buffer layer is formed on the overall surface of the substrate, a second etch mask pattern of a second pitch may be formed thereon in a region between the first etch mask pattern. The buffer layer may be anisotropically etched using the second etch mask pattern as an etch mask, forming a buffer layer pattern.Type: GrantFiled: May 8, 2006Date of Patent: June 2, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Cha-Won Koh, Sang-Gyun Woo, Jeong-Lim Nam, Kyeong-Koo Chi, Seok-Hwan Oh, Gi-Sung Yeo, Seung-Pil Chung, Heung-Sik Park
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Publication number: 20090065864Abstract: A semiconductor device and a method of fabricating the same are provided. The semiconductor device can include a buried conductive layer in a semiconductor substrate, an epitaxial layer on the buried conductive layer, and a plug passing through the epitaxial layer. The plug can be electrically connected to the buried conductive layer and can have an insulating layer around it, isolating the plug from an adjacent active area.Type: ApplicationFiled: September 5, 2008Publication date: March 12, 2009Inventor: SANG YONG LEE
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Patent number: 7479410Abstract: A semiconductor structure is provided that includes a hybrid orientated substrate having at least two coplanar surfaces of different surface crystal orientations, wherein one of the coplanar surfaces has bulk-like semiconductor properties and the other coplanar surface has semiconductor-on-insulator (SOI) properties. In accordance with the present invention, the substrate includes a new well design that provides a large capacitance from a retrograde well region of the second conductivity type to the substrate thereby providing noise decoupling with a low number of well contacts. The present invention also provides a method of fabricating such a semiconductor structure.Type: GrantFiled: June 11, 2007Date of Patent: January 20, 2009Assignee: International Business Machines CorporationInventors: Wilfried E. Haensch, Edward J. Nowak
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Publication number: 20090001478Abstract: A GaN layer and an n-type AlGaN layer are formed over an insulating substrate, and thereafter, a gate electrode, a source electrode and a drain electrode are formed on them. Next, an opening reaching at least a surface of the insulating substrate is formed in the source electrode, the GaN layer and the n-type AlGaN layer. Then, a nickel (Ni) layer is formed in the opening. Thereafter, by conducting dry etching from the back side while making the nickel (Ni) layer serve as an etching stopper, a via hole reaching the nickel (Ni) layer is formed in the insulating substrate. Then, a via wiring is formed extending from an inside the via hole to the back surface of the insulating substrate.Type: ApplicationFiled: June 26, 2008Publication date: January 1, 2009Applicant: FUJITSU LIMITEDInventor: Naoya Okamoto
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Patent number: 7462539Abstract: A semiconductor device has: an isolation region formed on a semiconductor substrate and defining a continuous active region including a select transistor region and a direct tunnel element region; a gate insulating film formed on a channel region of the select transistor region; a tunnel insulating film formed on a partial area of the direct tunnel element region and having a thickness different from a thickness of the gate insulating film; a continuous floating gate electrode formed above the gate insulating film and the tunnel insulating film; an inter-electrode insulating film formed on a surface of the floating gate electrode; a control gate electrode facing the floating gate electrode via the inter-electrode insulating film; and a pair of source/drain regions formed on both sides of the channel region of the select transistor region and not overlapping the tunnel insulating film.Type: GrantFiled: August 28, 2007Date of Patent: December 9, 2008Assignee: Fujitsu LimitedInventors: Kouji Tsunoda, Tatsuya Usuki, Masao Taguchi
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Patent number: 7396726Abstract: An elongate stacked semiconductor structure is formed on a substrate. The stacked semiconductor structure includes a second semiconductor material region disposed on a first semiconductor material region. The first semiconductor material region is selectively doped to produce spaced-apart impurity-doped first semiconductor material regions and a lower dopant concentration first semiconductor material region therebetween. Etching exposes a portion of the second semiconductor material region between the impurity-doped first semiconductor material regions. The etching removes at least a portion of the lower dopant concentration first semiconductor material region to form a hollow between the substrate and the portion of the second semiconductor material region between the impurity-doped first semiconductor material regions. An insulation layer that surrounds the exposed portion of the second semiconductor material region between the impurity-doped first semiconductor material regions is formed.Type: GrantFiled: March 31, 2005Date of Patent: July 8, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Chang-Woo Oh, Dong-Gun Park, Dong-Won Kim, Sung-Young Lee
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Patent number: 7385246Abstract: An integrated circuit device comprising a diode and a method of making an integrated circuit device comprising a diode are provided. The diode can comprise an island of a first conductivity type, a first region of a second conductivity type formed in the island, and a cathode diffusion contact region doped to the second conductivity type disposed in the first region. The diode can also comprise a cathode contact electrically contacting the cathode diffusion contact region, an anode disposed in the island, an anode contact electrically contacting the anode, and a first extension region doped to the first conductivity type disposed at a surface junction between the first region and the island.Type: GrantFiled: January 6, 2006Date of Patent: June 10, 2008Assignee: Intersil Americas Inc.Inventor: James Douglas Beasom
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Patent number: 7338840Abstract: Thermal hot spots in the substrate of a semiconductor die, and the required surface area of the semiconductor die, are substantially reduced by forming thermal or thermal and electrical pipes in the substrate that extend from a bottom surface of the substrate to a point near the top surface of the substrate.Type: GrantFiled: May 17, 2006Date of Patent: March 4, 2008Assignee: National Semiconductor CorporationInventors: Gobi R. Padmanabhan, Visvamohan Yegnashankaran
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Patent number: 6897103Abstract: An integrated circuit having a high voltage lateral MOS with reduced ON resistance. In one embodiment, the integrated circuit includes a high voltage lateral MOS with an island formed in a substrate, a source, a gate and a first and second drain extension. The island is doped with a low density first conductivity type. The source and drain contact are both doped with a high density second conductivity type. The first drain extension is of the second conductivity type and extends laterally from under the gate past the drain contact. The second drain extension is of the second conductivity type and extends laterally from under the gate toward the source. A portion of the second drain extension overlaps the first drain extension under the gate to form a region of increased doping of the second conductivity type.Type: GrantFiled: February 12, 2003Date of Patent: May 24, 2005Assignee: Intersil Americas Inc.Inventor: James D. Beasom
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Patent number: 6893916Abstract: An integrated circuit structure for MOS-type devices including a silicon substrate of a first conductivity type; a first gate insulating regions selectively placed over the silicon substrate of the first conductivity tape; a first polycrystalline silicon layer selectively placed over the silicon substrate of the first conductivity type; a second gate insulating regions selectively placed over the first gate insulating regions and the first polycrystalline silicon layer; a second polycrystalline silicon layer selectively placed over the second gate insulating regions; first buried silicon regions of a second conductivity type, buried within the silicon substrate of the first conductivity type, placed under the first polycrystalline silicon layer and in contact therewith; and second buried silicon regions of the second conductivity type, buried within the silicon substrate of the first conductivity type, placed under the second gate insulating regions, under the second polycrystalline silicon layer and insulateType: GrantFiled: July 14, 2003Date of Patent: May 17, 2005Assignee: HRL Laboratories, LLCInventors: James P. Baukus, Lap-Wai Chow, William M. Clark, Jr.
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Patent number: 6847084Abstract: A semiconductor device comprises a semiconductor substrate, a first circuit formed on the substrate, and a second circuit connected to the first circuit as an input/output portion thereof and powered by a voltage higher than that for the first circuit, the first circuit including a first and a second field-effect transistor, the first drain region of the first transistor accompanying a first load capacitance, the second drain region of the second transistor accompanying a second load capacitance smaller than the first load capacitance, and the first gate insulation film of the first transistor having an average relative dielectric constant higher than that of the second gate insulation film of the second transistor, thereby realizing a high operation speed.Type: GrantFiled: August 1, 2003Date of Patent: January 25, 2005Assignee: Kabushiki Kaisha ToshibaInventors: Mizuki Ono, Akira Nishiyama
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Patent number: 6784019Abstract: A stacked dual-chip semiconductor packaging technology is proposed for the packaging of two semiconductor chips in one single package unit. The proposed dual-chip semiconductor package is characterized by an intercrossedly-stacked dual-chip arrangement which is constructed on a specially-designed leadframe having a supporting frame; a die pad supported on the supporting frame and having a peripherally-located upper portion and a centrally-located downset portion; and a set of leads linked to the supporting frame and arranged around the die pad. By the proposed packaging technology, a first semiconductor chip is mounted within the downset portion of the die pad, while a second semiconductor chip is mounted on the upper portion of the die pad in an intercrossedly-stacked manner in relation to the first semiconductor chip. Compared to the prior art, the proposed technology allows the packaging process to be implemented in a less complex and more cost-effective manner.Type: GrantFiled: August 15, 2002Date of Patent: August 31, 2004Assignee: Siliconware Precision Industries Co., Ltd.Inventor: Chien-Ping Huang
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Publication number: 20040099884Abstract: An integrated circuit having signal traces, power traces, and ground traces. The signal traces are disposed on at least one signal distribution layer, and the signal traces on the at least one signal distribution layer are formed at no more than a first thickness. The power traces and ground traces are formed on at least one power ground distribution layer, where the at least one power ground distribution layer is an overlying layer of the integrated circuit relative to the at least one signal distribution layer. The power traces and ground traces on the at least one power ground distribution layer are formed at no less than a second thickness that is greater than the first thickness of the signal traces. In this manner, the signal traces, which can be formed with a relatively thin thickness, can be placed very close together on the signal distribution layers, and have sufficient conductivity for the signals transmitted thereon.Type: ApplicationFiled: November 26, 2002Publication date: May 27, 2004Inventor: Edwin M. Fulcher
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Patent number: 6740571Abstract: A method is provided for advantageously etching dielectric material between highly integrated polysilicon devices with high dielectric-to-polysilicon selectivity to expose polysilicon with minimal polysilicon loss and without photoresist lift. A wet etch solution comprising surfactant and between about 0% and about 10% NH4F is used to wet etch the dielectric material and reduce polysilicon loss thickness, polysilicon resistance ratios, and polysilicon etch rates, while increasing dielectric-to-polysilicon selectivity. Advantageously, the present invention may penetrate into increasingly small geometries of highly integrated devices and may also be used for general wet etches of dielectric material in conjunction with photoresist.Type: GrantFiled: July 25, 2002Date of Patent: May 25, 2004Assignee: Mosel Vitelic, Inc.Inventor: Hua Ji
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Publication number: 20040012092Abstract: An integrated circuit including a first signal line disposed on a semiconductor substrate, a second signal line disposed on a first dielectric layer, the first dielectric layer disposed on the semiconductor substrate, a third signal line disposed on a second dielectric layer, the second dielectric layer disposed on the first dielectric layer, and at least two vias connecting the first signal line to the second signal line, wherein the second signal line does not span the region directly beneath the third signal line, and wherein at least a portion of the first signal line extends into the region directly beneath the third signal line.Type: ApplicationFiled: July 19, 2002Publication date: January 22, 2004Inventors: Paul John Schwab, Andrew Kenneth Freeston
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Patent number: 6677202Abstract: A power MOS device that has increased channel width comprises a semiconductor substrate and a doped upper layer of a first conduction type disposed on the substrate. The upper layer comprises a plurality of doped well regions of a second, opposite conduction type and a plurality of heavily doped source regions of the first conduction type at an etched upper surface of the upper layer that comprises parallel corrugations disposed transversely to the source regions. A gate that separates one source region from another comprises an insulating layer and a conductive material. The corrugations provide an increase in width of a channel underlying the gate and the well and source regions.Type: GrantFiled: January 18, 2001Date of Patent: January 13, 2004Assignee: Fairchild Semiconductor CorporationInventors: Dexter Elson Semple, Jun Zeng
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Patent number: 6674132Abstract: A memory cell, which is isolated from other memory cells by STI trenches, each includes an ONO layer structure between a gate electrode and a channel region formed in a semiconductor body. The gate electrode is a component of a strip-shaped word line. Source and drain regions are disposed between gate electrodes of adjacent memory cells. Source regions are provided with polysilicon layers, in the form of a strip, as common source lines. Drain regions are connected as bit lines through polysilicon fillings to metallic interconnects applied to the top face of the semiconductor body.Type: GrantFiled: August 9, 2001Date of Patent: January 6, 2004Assignee: Infineon Technologies AGInventor: Josef Willer
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Publication number: 20030230807Abstract: Trace configurations for carrying high-speed digital differential signals provide for reduced conduction loss and improved signal integrity. In one embodiment, a circuit board has a first set of conductive traces disposed on nonconductive material, and a second set of conductive traces parallel to the first set and disposed within the conductive material. The second set is separated from the first set by non-conductive material. Corresponding traces of the first and second sets may be in a stacked configuration. In other embodiments, conductive material may be provided between corresponding traces of the first and second sets resulting in an “I-shaped” or “U-shaped” cross-section. In yet other embodiments, the trace configurations have “T-shaped” and “L-shaped” cross-sections.Type: ApplicationFiled: June 12, 2002Publication date: December 18, 2003Applicant: Intel CorporationInventors: Yuan-Liang Li, Jiangqi He, Dong Zhong, David G. Figueroa
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Publication number: 20030209805Abstract: The present invention is a dielectric film and its method of fabrication. The dielectric film of the present invention includes silicon oxygen fluorine and nitrogen wherein the interlayer dielectric comprises between 0.01-0.1 atomic percent nitrogen.Type: ApplicationFiled: March 24, 2003Publication date: November 13, 2003Inventors: Chi-Hing Choi, John Bumgarner, Todd Wilke, Melton Bost
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Publication number: 20030199144Abstract: A mask is disclosed for use in forming a thin-layer pattern of an organic electroluminescence element having high-precision pixels. The mask is manufactured by wet-etching a (100) silicon wafer (single crystal silicon substrate) 1 in a crystal orientation-dependent anisotropic fashion so as to form through-holes 11 having (111)-oriented walls 11a serving as apertures corresponding to a thin-layer pattern to be formed.Type: ApplicationFiled: May 6, 2003Publication date: October 23, 2003Applicant: Seiko Epson CorporationInventors: Mitsuro Atobe, Shinichi Kamisuki, Ryuichi Kurosawa, Shinichi Yotsuya
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Patent number: 6635518Abstract: Methods and apparatus are provided for creating field effect transistor (FET) body connections with high-quality matching characteristics and no area penalty for partially depleted silicon-on-insulator (SOI) circuits. The FET body connections are created for partially depleted silicon-on-insulator (SOI) technologies by forming adjacent FET devices inside a shallow trench shape. The adjacent FET devices share a common diffusion area, such as source or drain. Selectively spacing apart adjacent gate lines form an underpath connecting bodies of the adjacent FET devices. The underpath is defined by forming an undepleted region on top of a buried oxide layer. The adjacent polysilicon gate lines are selectively spaced apart to define a depth of depletion in a shared diffusion region for creating the underpath. Also, adjacent FET devices with connecting bodies can be built by adding an ion implant masking step to the fabrication process. This masking step changes the depletion depth under the shared diffusion area.Type: GrantFiled: April 4, 2001Date of Patent: October 21, 2003Assignee: International Business Machines CorporationInventors: Anthony Gus Aipperspach, Jente Benedict Kuang, John Edward Sheets, II, Daniel Lawrence Stasiak
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Patent number: RE38565Abstract: A ferroelectric thin film capacitor has smooth electrodes permitting comparatively stronger polarization, less fatigue, and less imprint, as the ferroelectric capacitor ages. The smooth electrode surfaces are produced by carefully controlled drying, soft baking, and annealing conditions.Type: GrantFiled: February 6, 2003Date of Patent: August 17, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shinichiro Hayashi, Tatsuo Otsuki