With Specified Shape Of Pn Junction Patents (Class 257/653)
-
Patent number: 8164149Abstract: A vertical Hall sensor which is integrated in a semiconductor chip has at least 6 electric contacts which are arranged along a straight line on the surface of the semiconductor chip. The electric contacts are wired according to a predetermined rule, namely such that when the contacts are numbered through continuously and repeatedly with the numerals 1, 2, 3 and 4 starting from one of the two outermost contacts, the contacts to which the same numeral is assigned are electrically connected with each other.Type: GrantFiled: November 23, 2009Date of Patent: April 24, 2012Assignee: Melexis Technologies SAInventor: Christian Schott
-
Patent number: 8125056Abstract: A high power density or low forward voltage rectifier which utilizes at least one trench in both the anode and cathode. The trenches are formed in opposing surfaces of the substrate, to increase the junction surface area per unit surface area of the semiconductor die. This structure allows for increased current loads without increased horizontal die space. The increased current handling capability allows for the rectifier to operate at lower forward voltages. Furthermore, the present structure provides for increased substrate usage by up to 30 percent.Type: GrantFiled: September 23, 2009Date of Patent: February 28, 2012Assignee: Vishay General Semiconductor, LLCInventors: Hung-Ping Tsai, Shih-Kuan Chen, Lung-Ching Kao
-
Patent number: 8120134Abstract: A diode and memory device including the diode, where the diode includes a conductive portion and another portion formed of a first material that has characteristics allowing a first decrease in a resistivity of the material upon application of a voltage to the material, thereby allowing current to flow there through, and has further characteristics allowing a second decrease in the resistivity of the first material in response to an increase in temperature of the first material.Type: GrantFiled: October 15, 2009Date of Patent: February 21, 2012Assignee: Micron Technology, Inc.Inventors: Gurtej Sandhu, Bhaskar Srinivasan
-
Patent number: 8114783Abstract: A silicon carbide semiconductor element and a manufacturing method thereof are disclosed in which a low contact resistance is attained between an electrode film and a wiring conductor element, and the wiring conductor element is hardly detached from the electrode film. In the method, a nickel film and a nickel oxide film are laminated in this order on a surface of an n-type silicon carbide substrate or an n-type silicon carbide region of a silicon carbide substrate, followed by a heat treatment under a non-oxidizing condition. The heat treatment transforms a portion of the nickel film into a nickel silicide film. Then, the nickel oxide film is removed with hydrochloric acid solution, and subsequently, a nickel aluminum film and an aluminum film are laminated in this order on a surface of the nickel silicide film.Type: GrantFiled: August 18, 2008Date of Patent: February 14, 2012Assignee: Fuji Electric Co., Ltd.Inventors: Yasuyuki Kawada, Takeshi Tawara, Shun-ichi Nakamura, Masahide Gotoh
-
Publication number: 20120032312Abstract: A semiconductor substrate which allows desired electrical characteristics to be more easily acquired, a semiconductor device of the same, and a method of producing the semiconductor substrate. The method of producing this semiconductor substrate is provided with: a first epitaxial layer forming step (S1) of forming a first epitaxial layer; a trench forming step (S2) of forming trenches in the first epitaxial layer; and epitaxial layer forming steps (S3, S4, S5) of forming epitaxial layers on the first epitaxial layer and inside the trenches, using a plurality of growth conditions including differing growth rates, so as to fill the trenches, and keeping the concentration of dopant taken into the epitaxial layers constant in the plurality of growth conditions.Type: ApplicationFiled: March 25, 2010Publication date: February 9, 2012Applicants: DENSO CORPORATION, SUMCO CORPORATIONInventors: Syouji Nogami, Hitoshi Goto, Takumi Shibata, Tsuyoshi Yamamoto
-
Patent number: 8076672Abstract: A semiconductor device which includes a passivation structure formed with a conductive strip of resistive material that crosses itself once around the active region of the device to form a first closed loop, a continuous strip that loops around the first closed loop without crossing itself which crosses itself a second time to form a second closed loop.Type: GrantFiled: December 28, 2006Date of Patent: December 13, 2011Assignee: International Rectifier CorporationInventor: Niraj Ranjan
-
Publication number: 20110227025Abstract: According to one embodiment, a semiconductor memory device includes a word line interconnection layer, a bit line interconnection layer and a pillar. The word line interconnection layer includes a plurality of word lines which extend in a first direction. The bit line interconnection layer includes a plurality of bit lines which extend in a second direction crossing over the first direction. The pillar is arranged between each of the word lines and each of the bit lines. The pillar includes a silicon diode and a variable resistance film, and the silicon diode includes a p-type portion and an n-type portion. The word line interconnection layer and the bit line interconnection layer are alternately stacked, and a compressive force is applied to the silicon diode in a direction in which the p-type portion and the n-type portion become closer to each other.Type: ApplicationFiled: August 31, 2010Publication date: September 22, 2011Applicant: Kabushiki Kaisha ToshibaInventors: Jun HIROTA, Yoko Iwakaji, Moto Yabuki
-
Publication number: 20110215416Abstract: Nicotinamide and/or a compound which is chemically combined with nicotinamide may be used as a carbon nanotube (“CNT”) n-doping material. CNTs n-doped with the CNT n-doping material may have long-lasting doping stability in the air without de-doping. Further, CNT n-doping state may be easily controlled when using the CNT n-doping material. The CNT n-doping material and/or CNTs n-doped with the CNT n-doping material may be used for various applications.Type: ApplicationFiled: May 18, 2011Publication date: September 8, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jaeyoung CHOI, Hyeon Jin SHIN, Seonmi YOON, Boram KANG, Young Hee LEE, Un Jeong KIM
-
Patent number: 7999357Abstract: The present invention advantageously provides a circular-arc shaped structure for forward biased steering diodes used in an ESD circuit, which circular arc shaped structure forward biases steering diodes effectively prevent concentration of an ESD pulse to one section of the p-n junction within the forward biased steering diode (or, alternatively viewed, evenly distributing stress along the entire p-n junction), thus increasing reliability of the ESD circuit, and also minimizing input capacitance as well as occupying a smaller area. The circular-arc shaped structure thus provides a mechanism to evenly distribute the current flow through the ESD steering diodes, and therefore avoids the disadvantage of a voltage gradient along the steering diode structure.Type: GrantFiled: May 12, 2009Date of Patent: August 16, 2011Assignee: Semiconductor Components Industries, LLCInventor: Paul Chan
-
Publication number: 20110162687Abstract: Disclosed herein, in certain instances, is a novel photovoltaic cell that uses unique microarchitectural and multi-layer functional designs. Further disclosed herein, in certain instances, is a 3-dimensional electrode.Type: ApplicationFiled: June 9, 2009Publication date: July 7, 2011Inventors: Kee Suk Moon, Khaled Morsi, Samuel Kassegne
-
Publication number: 20110121423Abstract: A mask for use in making a planar PN junction in a semiconductor device includes a central mask opening and a plurality of spaced apart concentric mask openings surrounding the central mask opening. The concentric mask openings each have a width less than a maximum dimension of the central mask opening. The central mask opening can be circular and the concentric mask openings can have a ring-shape. The mask can be used to form openings in a wafer layer for introducing an impurity to dope that wafer layer.Type: ApplicationFiled: November 25, 2009Publication date: May 26, 2011Applicant: Sensors Unlimited, Inc.Inventors: Keith Forsyth, Noah Clay
-
Publication number: 20110101473Abstract: This invention relates to a junction device, especially a p-n junction device. This invention also relates to a backward current decoupler which is also a good sensor. An induced backward current by forward current input can be decoupled by the backward current decoupler. The new p-n junction device has built-in damper and better capacitive property so that less power is consumed. The new sensor can be interactable with thermal, magnetic, optical, force or electrical fields.Type: ApplicationFiled: November 3, 2009Publication date: May 5, 2011Inventors: Yen-Wei Hsu, Whei-Chyou Wu
-
Publication number: 20110089518Abstract: An octagonal structure of photodiodes using standard CMOS technology has been developed to serve as a de-multiplexer for spatially multiplexed fiber optic communication systems.Type: ApplicationFiled: October 17, 2009Publication date: April 21, 2011Inventor: Syed Murshid
-
Publication number: 20110089391Abstract: A storage system and method for forming a storage system that uses punch-through diodes as a steering element in series with a reversible resistivity-switching element is described. The punch-through diode allows bipolar operation of a cross-point memory array. The punch-through diode may have a symmetrical non-linear current/voltage relationship. The punch-through diode has a high current at high bias for selected cells and a low leakage current at low bias for unselected cells. Therefore, it is compatible with bipolar switching in cross-point memory arrays having resistive switching elements. The punch-through diode may be a N+/P?/N+ device or a P+/N?/P+ device.Type: ApplicationFiled: October 20, 2009Publication date: April 21, 2011Inventors: Andrei Mihnea, Deepak C. Sekar, George Samachisa, Roy Scheuerlein, Li Xiao
-
Publication number: 20110068439Abstract: A high power density or low forward voltage rectifier which utilizes at least one trench in both the anode and cathode. The trenches are formed in opposing surfaces of the substrate, to increase the junction surface area per unit surface area of the semiconductor die. This structure allows for increased current loads without increased horizontal die space. The increased current handling capability allows for the rectifier to operate at lower forward voltages. Furthermore, the present structure provides for increased substrate usage by up to 30 percent.Type: ApplicationFiled: September 23, 2009Publication date: March 24, 2011Applicant: VISHAY GENERAL SEMICONDUCTOR, LLC.Inventors: Hung-Ping Tsai, Shih-Kuan Chen, Lung-Ching Kao
-
Patent number: 7902051Abstract: The present invention, in one embodiment, provides a method of producing a PN junction the method including providing a single crystal substrate; forming an insulating layer on the single crystal substrate; forming a via through the insulating layer to provide an exposed portion of the single crystal substrate; forming amorphous Si on at least the exposed portion of the single crystal substrate; converting at least a portion of the amorphous Si into single crystal Si; and forming dopant regions in the single crystal Si. In one embodiment the diode of the present invention is integrated with a memory device.Type: GrantFiled: January 7, 2008Date of Patent: March 8, 2011Assignees: International Business Machines Corporation, Qimonda AG, Macronix International Co., Ltd.Inventors: Bipin Rajendran, Thomas Happ, Hsiang-Lan Lung
-
Publication number: 20110049683Abstract: Structures and methods are provided for nanosecond electrical pulse anneal processes. The method of forming an electrostatic discharge (ESD) N+/P+ structure includes forming an N+ diffusion on a substrate and a P+ diffusion on the substrate. The P+ diffusion is in electrical contact with the N+ diffusion. The method further includes forming a device between the N+ diffusion and the P+ diffusion. A method of annealing a structure or material includes applying an electrical pulse across an electrostatic discharge (ESD) N+/P+ structure for a plurality of nanoseconds.Type: ApplicationFiled: September 3, 2009Publication date: March 3, 2011Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Michel J. Abou-Khalil, Robert J. GAUTHIER, JR., Tom C. LEE, Junjun LI, Souvick MITRA, Christopher S. PUTNAM, Robert R. ROBISON
-
Patent number: 7880201Abstract: The present invention is a method and an apparatus for optical modulation, for example for use in optical communications links. In one embodiment, an apparatus for optical modulation includes a first silicon layer having one or more trenches formed therein, a dielectric layer lining the first silicon layer, and a second silicon layer disposed on the dielectric layer and filling the trenches.Type: GrantFiled: November 9, 2006Date of Patent: February 1, 2011Assignee: International Business Machines CorporationInventors: Yurii A. Vlasov, Fengnian Xia
-
Patent number: 7872322Abstract: A symmetrical vertical Hall element comprises a well of a first conductivity type that is embedded in a substrate of a second conductivity type and which is contacted by four contacts serving as current and voltage contacts. From the electrical point of view, such a Hall element with four contacts can be regarded as a resistance bridge formed by four resistors R1 to R4 of the Hall element. From the electrical point of view, the Hall element is then regarded as ideal when the four resistors R1 to R4 have the same value. The invention suggests a series of measures in order to electrically balance the resistance bridge. A first measure exists in providing at least one additional resistor. A second measure exists in locally increasing or reducing the electrical conductivity of the well. A third measure exists in providing two Hall elements that are electrically connected in parallel in such a way that their Hall voltages are equidirectional and their offset voltages are largely compensated.Type: GrantFiled: September 10, 2002Date of Patent: January 18, 2011Assignee: Melexis Tessenderlo NVInventors: Christian Schott, Radivoje Popovic, Pierre-Andre Besse, Enrico Schurig
-
Patent number: 7872334Abstract: Diodes and method of fabricating diodes. A diode includes: an p-type single wall carbon nanotube; an n-type single wall carbon nanotube, the p-type single wall carbon nanotube in physical and electrical contact with the n-type single wall carbon nanotube; and a first metal pad in physical and electrical contact with the p-type single wall carbon nanotube and a second metal pad in physical and electrical contact with the n-type single wall carbon nanotube.Type: GrantFiled: May 4, 2007Date of Patent: January 18, 2011Assignee: International Business Machines CorporationInventors: Jia Chen, Steven Howard Voldman
-
Publication number: 20100295105Abstract: A method for manufacturing a semiconductor device includes: an element portion formation step of forming an element portion on a base layer; a delaminating layer formation step of forming a delaminating layer in the base layer; a bonding step of bonding the base layer having the element portion to a substrate; and a separation step of separating and removing a portion of the base layer in the depth direction along the delaminating layer by heating the base layer bonded to the substrate. The method further includes, after the separation step, an ion implantation step of ion-implanting a p-type impurity element in the base layer for adjusting the impurity concentration of a p-type region of the element.Type: ApplicationFiled: September 25, 2008Publication date: November 25, 2010Applicant: SHARP KABUSHIKI KAISHAInventors: Yasumori Fukushima, Kazuhide Tomiyasu, Yutaka Takafuji, Kenshi Tada, Michiko Takei
-
Patent number: 7812427Abstract: A semiconductor component includes a semiconductor body and a second semiconductor zone of a first conductivity type that serves as a rear side emitter. The second semiconductor zone is preceded by a plurality of third semiconductor zones of a second conductivity type that is opposite to the first conductivity type. The third semiconductor zones are spaced apart from one another in a lateral direction. In addition, provided within the semiconductor body is a field stop zone spaced apart from the second semiconductor zone, thereby reducing an electric field in the direction toward the second semiconductor zone.Type: GrantFiled: June 4, 2007Date of Patent: October 12, 2010Assignee: Infineon Technologies AGInventors: Anton Mauder, Hans-Peter Felsl, Manfred Pfaffenlehner, Hans-Joachim Schulze
-
Patent number: 7804157Abstract: A device configured to have a nanowire formed laterally between two electrodes includes a substrate and an insulator layer established on at least a portion of the substrate. An electrode of a first conductivity type and an electrode of a second conductivity type different than the first conductivity type are established at least on the insulator layer. The electrodes are electrically isolated from each other. The electrode of the first conductivity type has a vertical sidewall that faces a vertical sidewall of the electrode of the second conductivity type, whereby a gap is located between the two vertical sidewalls. Methods are also disclosed for forming the device.Type: GrantFiled: June 16, 2006Date of Patent: September 28, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventors: Shashank Sharma, Theodore I. Kamins
-
Publication number: 20100230715Abstract: A semiconductor device has a semiconductor body with a semiconductor device structure including at least a first electrode and a second electrode. Between the two electrodes, a drift region is arranged, the drift region including charge compensation zones and drift zones arranged substantially parallel to one another. At least one charge carrier storage region which is at least partially free of charge compensation zones is arranged in the semiconductor body.Type: ApplicationFiled: March 12, 2009Publication date: September 16, 2010Applicant: INFINEON TECHNOLOGIES AUSTRIA AGInventors: Anton Mauder, Giulliano Aloise
-
Patent number: 7791176Abstract: A power semiconductor component and method for producing it. The component has a semiconductor base body with a first doping and a pn junction formed by a contact region having a second doping with a doping profile in the base body. The second contact region is arranged at a second surface of the base body and extends into the base body. The base body has a trench-type cutout with an edge area and a base area, wherein the base area is formed as a second partial area of the second surface, and wherein the second contact region extends from the base area via the edge area as far as a first partial area. Furthermore, the pn junction has a curvature adjacent to the edge area.Type: GrantFiled: December 22, 2008Date of Patent: September 7, 2010Assignee: SEMIKRON Elektronik GmbH & Co. KGInventor: Bernhard König
-
Patent number: 7772101Abstract: A phase-change memory device and a fabrication method thereof, capable of reducing driving current while minimizing a size of a contact hole used for forming a PN diode in the phase-change memory device that employs the PN diode. The method of fabricating the phase-change memory device includes the steps of preparing a semiconductor substrate having a junction area formed with a dielectric layer, forming an interlayer dielectric layer having etching selectivity lower than that of the dielectric layer over an entire structure, and forming a contact hole by removing predetermined portions of the interlayer dielectric layer and the dielectric layer. The contact area between the PN diode and the semiconductor substrate is increased so that interfacial resistance is reduced.Type: GrantFiled: June 25, 2008Date of Patent: August 10, 2010Assignee: Hynix Semiconductor Inc.Inventors: Su-Jin Chae, Keum-Bum Lee, Min-Yong Lee
-
Publication number: 20100193895Abstract: 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: ApplicationFiled: April 6, 2010Publication date: August 5, 2010Inventor: James Douglas Beasom
-
Patent number: 7759769Abstract: A semiconductor structure of a high side driver includes an ion-doped junction. The ion-doped junction includes a substrate and a deep well. The deep well is formed in the substrate and has a first concave structure. The ion-doped junction includes a semiconductor region connected to the first concave structure of the deep well and having substantially the same ion-doping concentration as the substrate.Type: GrantFiled: July 20, 2006Date of Patent: July 20, 2010Assignee: System General Corp.Inventors: Chiu-Chih Chiang, Chih-Feng Huang
-
Publication number: 20100155911Abstract: A diode is provided. The diode includes first and second diffusion layers formed in a substrate, a first metal coupled to the first diffusion layer, and a second metal coupled to the second diffusion layer that has width that is smaller than a width of the second diffusion layer.Type: ApplicationFiled: April 28, 2009Publication date: June 24, 2010Applicant: Broadcom CorporationInventor: Ramachandran Venkatasubramanian
-
Patent number: 7737533Abstract: A semiconductor junction device includes a substrate of low resistivity semiconductor material having a preselected polarity. A tapered recess extends into the substrate and tapers inward as it extends downward from an upper surface of the substrate. A semiconductor layer is disposed within the recess and extends above the upper surface of the substrate. The semiconductor layer has a polarity opposite from that of the substrate. A metal layer overlies the semiconductor layer.Type: GrantFiled: July 11, 2007Date of Patent: June 15, 2010Assignee: Vishay General Semiconductor LLCInventors: Sheng-Huei Dai, Ya-Chin King, Hai-Ning Wang, Ming-Tai Chiang
-
Publication number: 20100117162Abstract: A semiconductor body (1) comprises a connecting lead (21) for contacting a semiconductor area (2). The conductivity S per unit length of the connecting lead (21) changes from a first value SW to a second value S0. The semiconductor area (2) is electrically conductively connected to the connecting lead (21).Type: ApplicationFiled: October 24, 2007Publication date: May 13, 2010Applicant: Austriamicrosystems AGInventors: Georg Röhrer, Martin Knaipp
-
Publication number: 20100102419Abstract: An epitaxy-level packaging grows an epitaxial film and transfers it to an assembly substrate. The film growth and transfer are made using an epitaxy lateral overgrowth technique. The formed epitaxial film on an assembly substrate can be further processed to form devices such as solar cell, light emitting diode, and other devices and assembled into higher integration of desired applications.Type: ApplicationFiled: October 28, 2009Publication date: April 29, 2010Inventor: Eric Ting-Shan Pan
-
Patent number: 7687891Abstract: A semiconductor device includes a first layer having a first conductivity type, a second layer having a second conductivity type, a third layer having the second conductivity type, one or more first zones having the first conductivity type and located within the second layer, wherein each one of the one or more first zones is adjacent to the third layer, and one or more second zones having the second conductivity type and located within the second layer, wherein each one of the one or more second zones is adjacent to one or more of the one or more first zones.Type: GrantFiled: May 14, 2007Date of Patent: March 30, 2010Assignee: Infineon Technologies AGInventors: Hans-Joachim Schulze, Hans-Peter Felsl
-
Publication number: 20100072573Abstract: In one embodiment, high doped semiconductor channels are formed in a semiconductor region of an opposite conductivity type to increase the capacitance of the device.Type: ApplicationFiled: December 3, 2009Publication date: March 25, 2010Inventors: David D. Marreiro, Sudhama C. Shastri, Gordon M. Grivna, Earl D. Fuchs
-
Patent number: 7679192Abstract: A semiconductor device includes a semiconductor substrate, an interlayer insulating film formed over the substrate, a trench formed in the interlayer insulating film, a cover film formed over the inside surface of the trench, a barrier layer formed over the cover film; and a metal line formed over the barrier layer which fills and seals the trench. The metal line is in direct contact with the semiconductor substrate.Type: GrantFiled: December 28, 2006Date of Patent: March 16, 2010Assignee: Dongbu HiTek Co., Ltd.Inventor: Han-Choon Lee
-
Publication number: 20100052116Abstract: The present invention relates to a semiconductor device with nanowire-type interconnect elements and a method for fabricating the same. The device comprises a metal structure with at least one self-assembled metal dendrite and forming an interconnect element (424) between a first and a second metal structure.Type: ApplicationFiled: August 31, 2007Publication date: March 4, 2010Applicant: NXP, B.V.Inventors: Kevin Cooper, Srdjan Kordic
-
Patent number: 7635909Abstract: A semiconductor diode has an anode, a cathode and a semiconductor volume provided between anode and cathode. A plurality of semiconductor zones are formed in the semiconductor volume, which semiconductor zones are inversely doped with respect to their immediate surroundings, spaced apart from one another and provided in the vicinity of the cathode. The semiconductor zones are spaced apart from the cathode.Type: GrantFiled: December 23, 2004Date of Patent: December 22, 2009Assignee: Infineon Technologies AGInventors: Anton Mauder, Hans-Joachim Schulze, Frank Pfirsch, Elmar Falck, Josef Lutz
-
Publication number: 20090294803Abstract: The invention provides methods and devices for fabricating printable semiconductor elements and assembling printable semiconductor elements onto substrate surfaces. Methods, devices and device components of the present invention are capable of generating a wide range of flexible electronic and optoelectronic devices and arrays of devices on substrates comprising polymeric materials. The present invention also provides stretchable semiconductor structures and stretchable electronic devices capable of good performance in stretched configurations.Type: ApplicationFiled: June 2, 2005Publication date: December 3, 2009Applicant: The Board of Trustees of the University of IllinoisInventors: Ralph G. Nuzzo, John A. Rogers, Etienne Menard, Keon Jae Lee, Dahl-Young Khang, Yugang Sun, Matthew Meitl, Zhengtao Zhu
-
Publication number: 20090230516Abstract: A PIN diode comprising an N-type substrate comprising a cathode of the PIN diode and having an intrinsic layer disposed upon the N-type substrate and having a top surface a P-type material disposed upon the top surface of the intrinsic layer comprising an anode of the PIN diode and a N-type material disposed over the sidewall of the cathode and over the sidewall and a portion of the top surface of the intrinsic material that is not occupied by the anode, wherein a horizontal gap is defined between the anode and the cathode through the intrinsic material, the gap being variable in width and/or the horizontal gap is less than the thickness of the intrinsic layer.Type: ApplicationFiled: March 14, 2008Publication date: September 17, 2009Applicant: M/A-Com, Inc.Inventors: Joel Lee Goodrich, James Joseph Brogle
-
Patent number: 7589393Abstract: A semiconductor structure of a high side driver includes an ion-doped junction. The ion-doped junction includes a substrate, a first deep well and a second deep well, a first heavy ion-doped region and a second heavy ion-doped region. The first deep well and second deep well are formed in the substrate, which are separated but partially linked with each other, and the first deep well and the second deep well have the same ion-doped type. The first heavy ion-doped region is formed in the first deep well for connecting to a first high voltage, and the first heavy ion-doped region has the same ion-doped type as the first deep well. The second heavy ion-doped region is formed in the second deep well for connecting to a second high voltage, and the second heavy ion-doped region has the same ion-doped type as the first deep well.Type: GrantFiled: July 25, 2006Date of Patent: September 15, 2009Assignee: System General CorporationInventors: Chiu-Chih Chiang, Chih-Feng Huang
-
Publication number: 20090218662Abstract: A semiconductor device includes: a first semiconductor region of a first conductive type; a second semiconductor region of the first conductive type formed on an upper surface of the first semiconductor region and having a lower impurity concentration than that of the first semiconductor region; a third semiconductor region of the first conductive type formed on the upper surface of the first semiconductor region and having a higher impurity concentration than that of the second semiconductor region; and a fourth semiconductor region of a second conductive type different from the first conductive type formed on upper surfaces of the second semiconductor region and the third semiconductor region. A PN junction is formed between the second semiconductor region and third semiconductor region and the fourth semiconductor region. The second semiconductor region is formed to surround the third semiconductor region.Type: ApplicationFiled: February 27, 2009Publication date: September 3, 2009Inventors: Shinji Kudoh, Ryu Hirata, Shinichi Miyazono
-
Publication number: 20090212292Abstract: A method of fabricating an organic electronic device is provided. The organic electronic device has a structure including an upper conductive layer and an underlying layer immediately beneath said upper conducting layer and having at least one solution process able semiconducting layer. The upper conducting layer preferably has a thickness of between 10 nm and 200 nm.Type: ApplicationFiled: May 30, 2006Publication date: August 27, 2009Inventors: Carl Hayton, Thomas Meredith Brown, Paul A. Cain
-
Patent number: 7569847Abstract: One-dimensional nanostructures having uniform diameters of less than approximately 200 nm. These inventive nanostructures, which we refer to as “nanowires”, include single-crystalline homostructures as well as heterostructures of at least two single-crystalline materials having different chemical compositions. Because single-crystalline materials are used to form the heterostructure, the resultant heterostructure will be single-crystalline as well. The nanowire heterostructures are generally based on a semiconducting wire wherein the doping and composition are controlled in either the longitudinal or radial directions, or in both directions, to yield a wire that comprises different materials. Examples of resulting nanowire heterostructures include a longitudinal heterostructure nanowire (LOHN) and a coaxial heterostructure nanowire (COHN).Type: GrantFiled: January 20, 2005Date of Patent: August 4, 2009Assignee: The Regents of the University of CaliforniaInventors: Arun Majumdar, Ali Shakouri, Timothy D. Sands, Peidong Yang, Samuel S. Mao, Richard E. Russo, Henning Feick, Eicke R. Weber, Hannes Kind, Michael Huang, Haoquan Yan, Yiying Wu, Rong Fan
-
Publication number: 20090179309Abstract: A power semiconductor component and method for producing it. The component has a semiconductor base body with a first doping and a pn junction formed by a contact region having a second doping with a doping profile in the base body. The second contact region is arranged at a second surface of the base body and extends into the base body. The base body has a trench-type cutout with an edge area and a base area, wherein the base area is formed as a second partial area of the second surface, and wherein the second contact region extends from the base area via the edge area as far as a first partial area. Furthermore, the pn junction has a curvature adjacent to the edge area.Type: ApplicationFiled: December 22, 2008Publication date: July 16, 2009Inventor: Bernhard KONIG
-
Patent number: 7538362Abstract: The invention relates to a lateral semiconductor diode, in which contact metal fillings (6, 7), which run in trenches (3, 4) in particular in a silicon carbide body (1, 2), are interdigitated at a distance from one another, and a rectifying Schottky or pn junction (18) is provided.Type: GrantFiled: August 29, 2005Date of Patent: May 26, 2009Assignee: Infineon Technologies AGInventors: Gabriel Konrad Dehlinger, Michael Treu
-
Publication number: 20090014711Abstract: Nano-engineered structures are disclosed, incorporating nanowhiskers of high mobility conductivity and incorporating pn junctions. In one embodiment, a nanowhisker of a first semiconducting material has a first band gap, and an enclosure comprising at least one second material with a second band gap encloses said nanoelement along at least part of its length, the second material being doped to provide opposite conductivity type charge carriers in respective first and second regions along the length of the of the nanowhisker, whereby to create in the nanowhisker by transfer of charge carriers into the nanowhisker, corresponding first and second regions of opposite conductivity type charge carriers with a region depleted of free carriers therebetween. The doping of the enclosure material may be degenerate so as to create within the nanowhisker adjacent segments having very heavy modulation doping of opposite conductivity type analogous to the heavily doped regions of an Esaki diode.Type: ApplicationFiled: August 22, 2008Publication date: January 15, 2009Inventors: Lars Ivar Samuelson, Bjorn Jonas Ohlsson, Lars-Ake Ledebo
-
Patent number: 7456491Abstract: The present invention relates to a various systems for generating and directing electron flow, and related methods, manufacturing techniques and related componentry, such as can be used in lithography, microscopy and other applications. In one embodiment, the present invention involves a system that includes an electron source having a plurality of independently-actuatable emission surfaces each of which is capable of emitting electrons, and an optical column adjacent to the electron source through which the emitted electrons pass. The optical column includes a plurality of actuatable electrodes that are capable of influencing paths taken by the emitted electrons.Type: GrantFiled: July 22, 2005Date of Patent: November 25, 2008Inventor: Subrahmanyam V. S. Pilla
-
Patent number: 7456033Abstract: The present invention provides a semiconductor device having an active region bent at right angles, wherein an interval between patterns for the active region and a gate is set larger than an arc radius of a curved portion (portion where a line is brought to arcuate form) formed inside the pattern for the bent active region. By defining and designing the pattern interval, the curved portion of the active region do not overlap the gate pattern, and the difference between a device characteristic and a designed value can be prevented from increasing.Type: GrantFiled: December 11, 2006Date of Patent: November 25, 2008Assignee: Oki Electric Industry Co., Ltd.Inventor: Koichi Kishiro
-
Patent number: 7449749Abstract: Formed on an insulator (9) are an N? type semiconductor layer (10) having a partial isolator formed on its surface and a P? type semiconductor layer (20) having a partial isolator formed on its surface. Source/drain (11, 12) being P+ type semiconductor layers are provided on the semiconductor layer (10) to form a PMOS transistor (1). Source/drain (21, 22) being N+ type semiconductor layers are provided on the semiconductor layer (20) to form an NMOS transistor (2). A pn junction (J5) formed by the semiconductor layers (10, 20) is provided in a CMOS transistor (100) made up of the transistors (1, 2). The pn junction (J5) is positioned separately from the partial isolators (41, 42), where the crystal defect is thus very small. Therefore, the leakage current is very low at the pn junction (J5).Type: GrantFiled: June 8, 2006Date of Patent: November 11, 2008Assignee: Renesas Technology Corp.Inventors: Takashi Ipposhi, Toshiaki Iwamatsu
-
Publication number: 20080273280Abstract: Diodes and method of fabricating diodes. A diode includes: an p-type single wall carbon nanotube; an n-type single wall carbon nanotube, the p-type single wall carbon nanotube in physical and electrical contact with the n-type single wall carbon nanotube; and a first metal pad in physical and electrical contact with the p-type single wall carbon nanotube and a second metal pad in physical and electrical contact with the n-type single wall carbon nanotube.Type: ApplicationFiled: May 4, 2007Publication date: November 6, 2008Inventors: Jia Chen, Steven Howard Voldman