All Contacts On Same Surface (e.g., Lateral Structure) Patents (Class 257/343)
  • Patent number: 9000515
    Abstract: A super-junction trench MOSFET with a short termination area is disclosed, wherein the short termination area comprising a charge balance region and a channel stop region formed near a top surface of an epitaxial layer with a trenched termination contact penetrating therethrough.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: April 7, 2015
    Assignee: Force Mos Technology Co., Ltd.
    Inventor: Fu-Yuan Hsieh
  • Patent number: 9000520
    Abstract: A semiconductor device includes an electrode arranged on a main surface of a semiconductor body and an insulating structure insulating the electrode from the semiconductor body. The insulating structure includes in a vertical cross-section a gate dielectric portion forming a first horizontal interface at least with a drift region of the device and having a first maximum vertical extension between the first horizontal interface and the electrode, and a field dielectric portion forming with the drift region second, third and fourth horizontal interfaces. The second through fourth horizontal interfaces are arranged below the main surface. The third horizontal interface is arranged between the second and fourth horizontal interfaces. A second maximum vertical extension is larger than the first maximum vertical extension and a third maximum vertical extension is larger than the second maximum vertical extension. The electrode only partially overlaps the third horizontal interface.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: April 7, 2015
    Assignee: Infineon Technologies Dresden GmbH
    Inventors: Marc Strasser, Karl-Heinz Gebhardt, Ralf Rudolf, Lincoln O'Riain
  • Patent number: 9000485
    Abstract: An electrode structure, a GaN-based semiconductor device including the electrode structure, and methods of manufacturing the same, may include a GaN-based semiconductor layer and an electrode structure on the GaN-based semiconductor layer. The electrode structure may include an electrode element including a conductive material and a diffusion layer between the electrode element and the GaN-based semiconductor layer. The diffusion layer may include a material which is an n-type dopant with respect to the GaN-based semiconductor layer, and the diffusion layer may contact the GaN-based semiconductor layer. A region of the GaN-based semiconductor layer contacting the diffusion layer may be doped with the n-type dopant. The material of the diffusion layer may comprise a Group 4 element.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: April 7, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-yub Lee, Wenxu Xianyu, Chang-youl Moon, Yong-young Park, Woo-young Yang, In-jun Hwang
  • Patent number: 9000519
    Abstract: An improved semiconductor is provided whereby n-grade and the p-top layers are defined by a series of discretely placed n-type and p-type diffusion segments. Also provided are methods for fabricating such a semiconductor.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: April 7, 2015
    Assignee: Macronix International Co., Ltd.
    Inventors: Ching-Lin Chan, Chen-Yuan Lin, Cheng-Chi Lin, Shih-Chin Lien
  • Patent number: 8994106
    Abstract: A transistor structure includes a p-type substrate, an n-well implanted in the substrate, a p-doped p-body implanted in the n-well, first and second transistors, an input line, and an output line. The first transistor includes a first gate, a first source, and a first drain, and the second transistor includes a second gate, a second source, and a second drain. The first source includes a first p+ region and a first n+ region, and the first drain includes a second n+ region. The second source includes a third n+ region and a second p+ region, and the second drain includes a third p+ region. The input line connects the first gate and the second gate, and the output line connects the second n+ region and the third p+ region.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: March 31, 2015
    Assignee: Volterra Semiconductor LLC
    Inventors: Budong You, Marco A. Zuniga
  • Patent number: 8987820
    Abstract: A LDMOS device includes a substrate having opposite first and second surfaces; a well region in a portion of the substrate; a gate structure over a portion of the substrate; a first doped region disposed in a portion of the well region from a first side; a second doped region disposed in the well region from a second side; a third doped region disposed in the first doped region; a fourth doped region disposed in the second doped region; a first trench in the third doped region, the first doped region, the well region, and the substrate adjacent to the first surface; a conductive contact in the first trench; a second trench in the substrate adjacent to the second surface; a first conductive layer in second trench; and a second conductive layer over the second surface of the substrate and the first conductive layer.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: March 24, 2015
    Assignee: Vanguard International Semiconductor Corporation
    Inventors: Tsung-Hsiung Lee, Jui-Chun Chang
  • Patent number: 8987821
    Abstract: A lateral double-diffused metal-oxide-semiconductor (LDMOS) transistor device includes an enhancement implant region formed in a portion of an accumulation region proximate a P-N junction between body and drift drain regions. The enhancement implant region contains additional dopants of the same conductivity type as the drift drain region. There is a gap between the enhancement implant region and the P-N junction. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: March 24, 2015
    Assignee: Alpha and Omega Semiconductor Incorporated
    Inventor: Hideaki Tsuchiko
  • Patent number: 8987818
    Abstract: A split gate power transistor includes a laterally configured power MOSFET including a doped silicon substrate, a gate oxide layer formed on a surface of the substrate, and a split polysilicon layer formed over the gate oxide layer. The polysilicon layer is cut into two electrically isolated portions, a first portion forming a polysilicon gate positioned over a channel region of the substrate, and a second portion forming a polysilicon field plate formed over a portion of a transition region of the substrate. The two polysilicon portions are separated by a gap. A lightly doped region is implanted in the substrate below the gap, thereby forming a bridge having the same doping type as the substrate body. The field plate also extends over a field oxide filled trench formed in the substrate. The field plate is electrically coupled to a source of the split gate power transistor.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: March 24, 2015
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Joel Montgomery McGregor, Vishnu Khemka
  • Patent number: 8981477
    Abstract: A laterally-diffused metal oxide semiconductor (LDMOS) device and method of manufacturing the same are provided. The LDMOS device can include a drift region, a source region and a drain region spaced a predetermined interval apart from each other in the drift region, a field insulating layer formed in the drift region between the source region and the drain region, and a first P-TOP region formed under the field insulating layer. The LDMOS device can further include a gate polysilicon covering a portion of the field insulating layer, a gate electrode formed on the gate polysilicon, and a contact line penetrating the gate electrode, the gate polysilicon, and the field insulating layer.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 17, 2015
    Assignee: Dongbu Hitek Co., Ltd.
    Inventor: Nam Chil Moon
  • Publication number: 20150069508
    Abstract: A semiconductor device includes a plurality of epitaxial layers stacked over a supportive substrate, a first buried impurity region formed to share the supportive substrate with a lowermost epitaxial layer among the multiple epitaxial layers, one or more second buried impurity regions formed to be coupled with the first buried impurity region and share an Nth epitaxial layer and an (N+1)th epitaxial layer among the multiple epitaxial layers, where N is a natural number, a body region formed in an uppermost epitaxial layer among the multiple epitaxial layers and a deep well formed in the uppermost epitaxial layer to surround the body region and to be coupled with the second buried impurity regions that share the uppermost epitaxial layer.
    Type: Application
    Filed: December 19, 2013
    Publication date: March 12, 2015
    Applicant: SK HYNIX INC.
    Inventors: Kwang-Sik KO, Kuem-Ju LEE, Joo-Won PARK
  • Publication number: 20150069507
    Abstract: A novel MOS transistor, which includes a source region, a drain region, a channel region, an isolation region, a drift region, a gate dielectric layer, a gate electrode and a field plate, is provided. The gate electrode has a first portion and a second portion. The first portion of a first conductivity type is located over the channel region and has a width equal to or greater than a distance of the gate electrode overlapped with the channel region. The second portion is un-doped and located over the isolation region. Accordingly, the MOS transistor allows higher process freedom saves production cost, as well as improves reliability.
    Type: Application
    Filed: September 12, 2013
    Publication date: March 12, 2015
    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Chih-Chang CHENG, Fu-Yu CHU, Ruey-Hsin LIU
  • Publication number: 20150069509
    Abstract: A semiconductor device includes a substrate having a supporting substrate, wherein a first epitaxial layer and a second epitaxial are sequentially stacked, an isolation region including a first buried impurity region of a second conductivity type and a second buried impurity region of the second conductivity type wherein the first buried impurity region is formed from the supporting substrate to the first epitaxial layer, and the second buried impurity region is formed from the first epitaxial layer to the second epitaxial layer and is in contact with an edge of the first buried impurity region, a third buried impurity region of a first conductivity type formed from the first epitaxial layer to the second epitaxial layer, located in the second buried impurity region and overlapped with the first buried impurity region, and a transistor formed over the second epitaxial layer and overlapped with the third buried impurity region.
    Type: Application
    Filed: December 20, 2013
    Publication date: March 12, 2015
    Applicant: SK hynix Inc.
    Inventors: Sang-Hyun LEE, Dae-Hoon KIM, Se-Kyung OH, Soon-Yeol PARK
  • Patent number: 8975696
    Abstract: A semiconductor component may include a semiconductor layer which has a front side and a back side, a first terminal electrode on the front side, a second terminal electrode on the back side, a first dopant region of a first conduction type on the front side, which is electrically connected to one of the terminal electrodes, a second dopant region of a second conduction type in the semiconductor layer, which is electrically connected to the other terminal electrode, a pn junction being formed between the first and second dopant regions, a dielectric layer on the back side between the semiconductor layer and the second terminal electrode, and the dielectric layer having an opening through which an electrical connection between the second terminal electrode and the first or second dopant region is passed.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: March 10, 2015
    Assignee: Infineon Technologies AG
    Inventors: Oliver Haeberlen, Franz Hirler, Maximilian Roesch
  • Patent number: 8969961
    Abstract: A semiconductor body (10) comprises a field-effect transistor (11). The field-effect transistor (11) comprises a drain region (12) of a first conduction type, a source region (13) of the first conduction type, a drift region (16) and a channel region (14) of a second conduction type which is opposite to the first conduction type. The drift region (16) comprises at least two stripes (15, 32) of the first conduction type which extend from the drain region (12) in a direction towards the source region (13). The channel region (14) is arranged between the drift region (16) and the source region (13).
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: March 3, 2015
    Assignee: AMS AG
    Inventors: Jong Mun Park, Verena Vescoli, Rainer Minixhofer
  • Patent number: 8969960
    Abstract: A power semiconductor device includes a second conductive type sense outer-peripheral well formed to surround a plurality of sense wells on the surface of a drift layer, a first conductive type main-cell source region selectively formed on the surface of the main cell well, a first conductive type sense source region selectively formed on the surface of the sense well, a first conductive type capacitor lower electrode region selectively formed on the surface of the sense outer-peripheral well, a gate insulation film formed on the channel regions and on the sense outer-peripheral well, a gate electrode formed on the gate insulation film, and a sense pad electrically connected to the sense well and the sense source region as well as on the sense outer-peripheral well and the capacitor lower electrode region.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: March 3, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Akihiko Furukawa, Yasuhiro Kagawa, Naruhisa Miura, Masayuki Imaizumi, Kazuyasu Nishikawa
  • Patent number: 8969913
    Abstract: A high voltage laterally diffused metal-oxide-semiconductor (HV LDMOS) device, particularly an insulated gate bipolar junction transistor (IGBT), and a method of making it are provided in this disclosure. The device includes a semiconductor substrate having at least one highly doped buried portion, a first doped well grown over the substrate, a gate structure formed on the first well, a source and a drain formed on either side of the gate structure, and a second doped well having a U-shaped cross section formed in the first well. A portion of the drain is formed over the first well outside of the second well.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: March 3, 2015
    Assignee: Taiwan Semiconductor Maufacturing Company, Ltd.
    Inventors: Ker Hsiao Huo, Chih-Chang Cheng, Ru-Yi Su, Jen-Hao Yeh, Fu-Chih Yang, Chun Lin Tsai
  • Patent number: 8969962
    Abstract: A semiconductor device, in particular, an extended drain metal oxide semiconductor (ED-MOS) device, defined by a doped shallow drain implant in a drift region. For example, an extend drain n-channel metal oxide semiconductor (ED-NMOS) device is defined by an n doped shallow drain (NDD) implant in the drift region. The device is also characterized by conductive layer separated from a substrate in part by a thin oxide layer and in another part by a thick/thin oxide layer. A method of fabricating a semiconductor device, in particular an ED-NMOS device, having a doped shallow drain implant of a drift region is also provided. A method is also provided for fabricating conductive layer disposed in part across a thin oxide layer and in another part across a thick/thin oxide layer.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: March 3, 2015
    Assignee: Macronix International Co., Ltd.
    Inventors: Wing-Chor Chan, Shyi-Yuan Wu
  • Patent number: 8969958
    Abstract: A split gate power transistor includes a doped substrate, a gate oxide layer on the substrate, and a split polysilicon layer over the gate oxide layer, which forms a polysilicon gate positioned over a channel region and a first portion of a transition region and a polysilicon field plate positioned over a second portion of the transition region and a shallow trench isolation region. The two polysilicon portions are separated by a gap. The field plate is electrically coupled to a source of the split gate power transistor. One or more body extension regions, each having the same doping type as the body substrate, extend at least underneath the edge of the field plate adjacent to the gap. The body extension regions force the portion of the transition region underneath the field plate into deep-depletion, thereby preventing the formation of a hole inversion layer in this region.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: March 3, 2015
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Vishnu Khemka, Ronghua Zhu, Tahir Arif Khan, Bernhard Heinrich Grote
  • Publication number: 20150054076
    Abstract: A method of forming a device is presented. The method includes providing a substrate having a device region which includes a source region, a gate and a drain region defined thereon. The method also includes implanting the gate. The gate comprises one or more doped portions with different dopant concentrations. A source and a drain are formed in the source region and drain region. The drain is separated from the gate on a second side of the gate and the source is adjacent to a first side of the gate.
    Type: Application
    Filed: October 1, 2014
    Publication date: February 26, 2015
    Inventor: Guowei ZHANG
  • Publication number: 20150054073
    Abstract: Semiconductor devices and methods for manufacturing the same are provided. In one embodiment, the method may include: forming a first shielding layer on a substrate, and forming one of source and drain regions with the first shielding layer as a mask; forming a second shielding layer on the substrate, and forming the other of the source and drain regions with the second shielding layer as a mask; removing a portion of the second shielding layer which is next to the other of the source and drain regions; forming a gate dielectric layer, and forming a gate conductor as a spacer on a sidewall of a remaining portion of the second shielding layer; and forming a stressed interlayer dielectric layer on the substrate.
    Type: Application
    Filed: November 26, 2012
    Publication date: February 26, 2015
    Applicant: Institute of Microelectronics, Chinese Academy of Sciences
    Inventors: Huilong Zhu, Qingqing Liang, Huicai Zhong
  • Publication number: 20150054074
    Abstract: Semiconductor devices and methods of manufacturing the same are provided. In one embodiment, the method may include: forming a first shielding layer on a substrate; forming one of source and drain regions with the first shielding layer as a mask; forming a second shielding layer on the substrate, and removing the first shielding layer; forming a shielding spacer on a sidewall of the second shielding layer; forming the other of the source and drain regions with the second shielding layer and the shielding spacer as a mask; removing at least a portion of the shielding spacer; and forming a gate dielectric layer, and forming a gate conductor as a spacer on a sidewall of the second shielding layer or a possible remaining portion of the shielding spacer.
    Type: Application
    Filed: October 8, 2012
    Publication date: February 26, 2015
    Applicant: Institute of Microelectronics, Chinese Academy of Sciences
    Inventors: Huilong Zhu, Qingqing Liang, Huicai Zhong
  • Publication number: 20150054075
    Abstract: There is provided a semiconductor device. An n-type transistor is formed on a (551) surface of a silicon substrate. A silicide layer region in contact with a diffusion region (heavily doped region) of the n-type transistor has a thickness not more than 5 nm. A metal layer region in contact with the silicide layer has a thickness of 25 nm (inclusive) to 400 nm (inclusive). A barrier height between the silicide layer region and the diffusion region has a minimum value in this thickness relationship.
    Type: Application
    Filed: September 30, 2014
    Publication date: February 26, 2015
    Applicant: TOHOKU UNIVERSITY
    Inventors: Tadahiro Ohmi, Hiroaki Tanaka
  • Patent number: 8963241
    Abstract: A split gate power transistor includes a doped substrate, a gate oxide layer on the substrate, and a split polysilicon layer over the gate oxide layer, which forms a polysilicon gate and a polysilicon field plate. The two polysilicon portions are separated by a gap. The field plate is electrically coupled to a source of the split gate power transistor. One or more polysilicon extension tabs extend from the field plate to at least above the edge of the first doped region. The polysilicon gate is cut to form a cut-out region for the end of each polysilicon extension tab extending toward the body substrate. The one or more polysilicon extension tabs force the portion of the transition region underneath the field plate into deep-depletion, thereby preventing the formation of a hole inversion layer in this region.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: February 24, 2015
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Vishnu Khemka, Ronghua Zhu, Tahir Arif Khan, Bernhard Heinrich Grote
  • Patent number: 8963245
    Abstract: An integrated circuit and component is disclosed. In one embodiment, the component is a compensation component, configuring the compensation regions in the drift zone in V-shaped fashion in order to achieve a convergence of the space charge zones from the upper to the lower end of the compensation regions is disclosed.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: February 24, 2015
    Assignee: Infineon Technologies Austria AG
    Inventors: Armin Willmeroth, Holger Kapels
  • Patent number: 8963243
    Abstract: The p-channel LDMOS transistor comprises a semiconductor substrate (1), an n well (2) of n-type conductivity in the substrate, and a p well (3) of p-type conductivity in the n well. A portion of the n well is located under the p well. A drain region (4) of p-type conductivity is arranged in the p well, and a source region (9) of p-type conductivity is arranged in the n well. A gate dielectric (7) is arranged on the substrate, and a gate electrode (8) is arranged on the gate dielectric. A body contact region (14) of n-type conductivity is arranged in the n well. A p implant region (17) is arranged in the n well under the p well in the vicinity of the p well. The p implant region locally compensates n-type dopants of the n well.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: February 24, 2015
    Assignee: AMS AG
    Inventors: Jong Mun Park, Martin Knaipp
  • Patent number: 8963244
    Abstract: A semiconductor device includes a transistor. The transistor includes a source region, a drain region, a body region, a drift zone, and a gate electrode adjacent to the body region. The body region, the drift zone, the source region and the drain region are disposed in a first semiconductor layer having a first main surface. The body region and the drift zone are disposed along a first direction between the source region and the drain region, the first direction being parallel to the first main surface. Trenches are disposed in the first semiconductor layer, the trenches extending in the first direction. The transistor further includes a drift control region arranged adjacent to the drift zone. The drift control region and the gate electrode are disposed in the trenches.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: February 24, 2015
    Assignee: Infineon Technologies Austria AG
    Inventors: Andreas Meiser, Till Schloesser, Anton Mauder, Franz Hirler
  • Publication number: 20150048452
    Abstract: A semiconductor device, in particular, an ultra-high metal oxide semiconductor (UHV MOS) device, is defined by a doped gradient structure in a drain region. For example, an ultra-high n-type metal oxide semiconductor (UHV NMOS) device is defined by an n-doped gradient structure in the drain region. The n-doped gradient structure has at least one of a high voltage n- (HVN-) well, a drain side high voltage n-type deep (HVND) well, and a drain side n-type well (NW) disposed in the drain region. A drain side n+ well is additionally disposed in the at least one of the HVN- well, the drain side HVND well, and the drain side NW. A method of manufacturing a UHV NMOS device having a doped gradient structure of a drain region is also provided.
    Type: Application
    Filed: August 16, 2013
    Publication date: February 19, 2015
    Applicant: Macronix International Co., Ltd.
    Inventors: Chieh-Chih Chen, Yu-Jui Chang, Cheng-Chi Lin, Shih-Chin Lien, Shyi-Yuan Wu
  • Publication number: 20150048451
    Abstract: A semiconductor device and a manufacturing method for the same are provided. The semiconductor substrate includes a gate structure, a first doped contact region, a second doped contact region and a well doped region. The gate structure is on the semiconductor substrate, and has a first gate sidewall and a second gate sidewall opposite to the first gate sidewall. The first doped contact region has a first type conductivity and is formed in the semiconductor substrate on the first gate sidewall of the gate structure. The second doped contact region has the first type conductivity and is formed in the semiconductor substrate on the second gate sidewall of the gate structure. The well doped region has the first type conductivity and is under the first doped contact region.
    Type: Application
    Filed: August 16, 2013
    Publication date: February 19, 2015
    Applicant: MACRONIX INTERNATIONAL CO., LTD.
    Inventor: Wing-Chor Chan
  • Publication number: 20150035056
    Abstract: A semiconductor device includes an N?-type well 13, a P-type body diffusion layer 14, an N+-type source diffusion layer 18, an N+-type drain diffusion layer 19, and a P+-type body contact region 32. A plurality of the P+-type body contact regions 32 are located along gate electrodes 17a and 17b, a plurality of first contact holes 25 are located along the gate electrodes, and a plurality of second contact holes 27 are located along the gate electrodes. The pitch of the plurality of P+-type body contact regions 32 is larger than the pitch of the plurality of first contact holes 25.
    Type: Application
    Filed: August 1, 2014
    Publication date: February 5, 2015
    Inventor: Kazunobu KUWAZAWA
  • Patent number: 8941175
    Abstract: A power array with a staggered arrangement for improving on-resistance and safe operating area of a device is provided. Each power array includes two or more rows with a plurality of parallel device units arranged along the row. Each device unit includes a source region, a drain region, and a gate disposed between the source region and the drain region, wherein each drain region is offset from the adjacent drain region of adjacent rows in a row direction.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: January 27, 2015
    Assignee: United Microelectronics Corp.
    Inventors: Wei-Lin Chen, Ke-Feng Lin, Chiu-Ling Lee, Chiu-Te Lee, Chih-Chung Wang, Hsuan-Po Liao
  • Patent number: 8941176
    Abstract: An embodiment of an integrated device includes a semiconductor body, in which an STI insulating structure is formed, laterally delimiting first active areas and at least one second active area in a low-voltage region and in a power region of the semiconductor body, respectively. Low-voltage CMOS components are housed in the first active areas. Formed in the second active area is a power component, which includes a source region, a body region, a drain-contact region, and at least one LOCOS insulation region, arranged between the body region and the drain-contact region and having a prominent portion that emerges from a surface of the semiconductor body, and an embedded portion inside it. The prominent portion of the LOCOS insulation region has a volume greater than that of the embedded portion.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: January 27, 2015
    Assignee: STMicroelectronics S.r.l.
    Inventors: Alessandro Causio, Paolo Colpani, Simone Dario Mariani
  • Publication number: 20150021687
    Abstract: The density of a transistor array is increased by forming one or more deep trench isolation structures in a semiconductor material. The deep trench isolation structures laterally surround the transistors in the array. The deep trench isolation structures limit the lateral diffusion of dopants and the lateral movement of charge carriers.
    Type: Application
    Filed: July 17, 2013
    Publication date: January 22, 2015
    Inventors: Takehito Tamura, Binghua Hu, Sameer Pendharkar, Guru Mathur
  • Patent number: 8937352
    Abstract: A layout pattern of an implant layer includes at least a linear region and at least a non-linear region. The linear region includes a plurality of first patterns to accommodate first dopants and the non-linear region includes a plurality of second patterns to accommodate the first dopants. The linear region abuts the non-linear region. Furthermore, a pattern density of the first patterns in the linear region is smaller than a pattern density of the second patterns in the non-linear region.
    Type: Grant
    Filed: February 17, 2014
    Date of Patent: January 20, 2015
    Assignee: United Microelectronics Corp.
    Inventors: Ming-Tsung Lee, Cheng-Hua Yang, Wen-Fang Lee, Chih-Chung Wang, Chih-Wei Hsu, Po-Ching Chuang
  • Publication number: 20150014771
    Abstract: A semiconductor device comprising dual L-shaped drift regions in a lateral diffused metal oxide semiconductor (LDMOS) and a method of making the same. The LDMOS in the semiconductor device comprises a trench isolation region or a deep trench encapsulated by a liner, a first L-shaped drift region, and a second L-shaped drift region. The LDMOS comprising the dual L-shape drift regions is integrated with silicon-germanium (SiGe) technology. The LDMOS comprising the dual L-shape drift regions furnishes a much higher voltage drop in a lateral direction within a much shorter distance from a drain region than the traditional LDMOS does.
    Type: Application
    Filed: July 11, 2013
    Publication date: January 15, 2015
    Inventors: David G. Brochu, JR., John J. Ellis-Monaghan, Michael J. Hauser, Jeffrey B. Johnson, Xuefeng Liu
  • Patent number: 8933511
    Abstract: A semiconductor device with improved characteristics is provided. The semiconductor device includes a LDMOS, a source plug electrically coupled to a source region of the LDMOS, a source wiring disposed over the source plug, a drain plug electrically coupled to a drain region of the LDMOS, and a drain wiring disposed over the drain plug. The structure of the source plug of the semiconductor device is devised. The semiconductor device is structured such that the drain plug is linearly disposed to extend in a direction Y, and the source plug includes a plurality of separated source plugs arranged at predetermined intervals in the direction Y. In this way, the separation of the source plug decreases an opposed area between the source plug and the drain plug, and can thus decrease the parasitic capacitance therebetween.
    Type: Grant
    Filed: March 16, 2014
    Date of Patent: January 13, 2015
    Assignee: Renesas Electronics Corporation
    Inventor: Kyoya Nitta
  • Patent number: 8933429
    Abstract: Selector devices that can be suitable for memory device applications can have low leakage currents at low voltages to reduce sneak current paths for non selected devices, and high leakage currents at high voltages to minimize voltage drops during device switching. The selector device can include a first electrode, a tri-layer dielectric layer, and a second electrode. The tri-layer dielectric layer can include a low band gap dielectric layer disposed between two higher band gap dielectric layers. The high band gap dielectric layers can be doped with doping materials to form traps at energy levels higher than the operating voltage of the memory device.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: January 13, 2015
    Assignee: Intermolecular, Inc.
    Inventors: Venkat Ananthan, Prashant B Phatak
  • Patent number: 8933531
    Abstract: A semiconductor device including a base substrate; a semiconductor layer which is disposed on the base substrate and has a 2-Dimensional Electron Gas (2DEG) generated within the semiconductor layer; a plurality of first ohmic electrodes which are disposed on the central region of the semiconductor layer and have island-shaped cross sections; a second ohmic electrode which is disposed on edge regions of the semiconductor layer; and a Schottky electrode part has first bonding portions bonded to the first ohmic electrodes, and a second bonding portion bonded to the semiconductor layer. A depletion region is provided to be spaced apart from the 2DEG when the semiconductor device is driven at an on-voltage and is provided to be expanded to the 2DEG when the semiconductor device is driven at an off-voltage, the depletion region being generated within the semiconductor layer by bonding the semiconductor layer and the second bonding portion.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: January 13, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Woo Cul Jeon, Jung Hee Lee, Young Hwan Park, Ki Yeol Park
  • Patent number: 8928078
    Abstract: The present invention discloses a double diffused metal oxide semiconductor (DMOS) device and a manufacturing method thereof. The DMOS device includes: a first conductive type substrate, a second conductive type high voltage well, a gate, a first conductive type body region, a second conductive type source, a second conductive type drain, a first conductive type body electrode, and a first conductive type floating region. The floating region is formed in the body region, which is electrically floating and is electrically isolated from the source and the gate, such that the electrostatic discharge (ESD) effect is mitigated.
    Type: Grant
    Filed: December 25, 2012
    Date of Patent: January 6, 2015
    Assignee: Richtek Technology Corporation, R.O.C.
    Inventors: Tzu-Cheng Kao, Jian-Hsing Lee, Jin-Lian Su, Huan-Ping Chu, Hung-Der Su
  • Patent number: 8921933
    Abstract: A semiconductor structure and a method for operating the same are provided. The semiconductor structure includes a substrate, a first doped region, a second doped region, a third doped region, a first trench structure and a second gate structure. The first doped region is in the substrate. The first doped region has a first conductivity type. The second doped region is in the first doped region. The second doped region has a second conductivity type opposite to the first conductivity type. The third doped region having the first conductivity type is in the second doped region. The first trench structure has a first gate structure. The first gate structure and the second gate structure are respectively on different sides of the second doped region.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: December 30, 2014
    Assignee: Macronix International Co., Ltd.
    Inventors: Shyi-Yuan Wu, Wing-Chor Chan, Shih-Chin Lien, Cheng-Chi Lin
  • Patent number: 8921938
    Abstract: Some of the embodiments of the present disclosure provide a transistor comprising a p-type well; and an n-type well; wherein at least a part of one of the p-type well and the n-type well overlaps with at least a part of another of the p-type well and the n-type well. Other embodiments are also described and claimed.
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: December 30, 2014
    Assignee: Marvell International Ltd.
    Inventors: Xin Yi Zhang, Weidan Li, Chuan-Cheng Cheng, Jian-Hung Lee, Chung Chyung (Jason) Han
  • Patent number: 8916913
    Abstract: The present disclosure discloses a high voltage semiconductor device and the associated methods of manufacturing. In one embodiment, the high voltage semiconductor device comprises: an epitaxial layer, a first low voltage well formed in the epitaxial layer; a second low voltage well formed in the epitaxial layer; a high voltage well formed in the epitaxial layer, wherein the second low voltage well is surrounded by the high voltage well; a first highly doping region formed in the first low voltage well; a second highly doping region and a third highly doping region formed in the second low voltage well, wherein the third highly doping region is adjacent to the second highly doping region; a field oxide formed in the epitaxial layer as a shallow-trench isolation structure; and a gate region formed on the epitaxial layer.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: December 23, 2014
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Ji-Hyoung Yoo, Lei Zhang
  • Patent number: 8916931
    Abstract: An N type layer made of an N type epitaxial layer in which an N+ type drain layer etc are formed is surrounded by a P type drain isolation layer extending from the front surface of the N type epitaxial layer to an N+ type buried layer. A P type collector layer is formed in an N type layer made of the N type epitaxial layer surrounded by the P type drain isolation layer and a P type element isolation layer, extending from the front surface to the inside of the N type layer. A parasitic bipolar transistor that uses the first conductive type drain isolation layer as the emitter, the second conductive type N type layer as the base, and the collector layer as the collector is thus formed so as to flow a surge current into a ground line.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: December 23, 2014
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Yasuhiro Takeda, Seiji Otake
  • Publication number: 20140367778
    Abstract: A lateral diffusion metal oxide semiconductor (LDMOS) comprises a semiconductor substrate having an STI structure in a top surface of the substrate, a drift region below the STI structure, and a source region and a drain region on opposite sides of the STI structure. A gate conductor is on the substrate over a gap between the STI structure and the source region and partially overlaps the drift region. A conformal dielectric layer is on the top surface and forms a mesa above the gate conductor. The conformal dielectric layer has a conformal etch-stop layer embedded therein. Contact studs extend through the dielectric layer and the etch-stop layer, and are connected to the source region, drain region, and gate conductor. A source electrode contacts the source contact stud, a gate electrode contacts the gate contact stud, and a drain electrode contacts the drain contact stud. A drift electrode is over the drift region.
    Type: Application
    Filed: June 18, 2013
    Publication date: December 18, 2014
    Inventors: Santosh Sharma, Yun Shi, Anthony K. Stamper
  • Patent number: 8912600
    Abstract: Methods of making, structures, devices, and/or applications for lateral double-diffused metal oxide semiconductor (LDMOS) transistors are disclosed. In one embodiment, an LDMOS transistor can include: (i) an n-doped deep n-well (DNW) region on a substrate; (ii) a gate oxide and a drain oxide between a source region and a drain region of the LDMOS transistor, the gate oxide being adjacent to the source region, the drain oxide being adjacent to the drain region; (iii) a conductive gate over the gate oxide and a portion of the drain oxide; (iv) a p-doped p-body region in the source region; (v) an n-doped drain region in the drain region; (vi) a first n-doped n+ region and a p-doped p+ region adjacent thereto in the p-doped p-body region of the source region; and (vii) a second n-doped n+ region in the drain region.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: December 16, 2014
    Assignees: Silergy Technology, Silergy Semiconductor Technology (Hang-Zhou) Ltd
    Inventor: Budong You
  • Patent number: 8912601
    Abstract: The present invention discloses a double diffused drain metal oxide semiconductor (DDDMOS) device and a manufacturing method thereof. The DDDMOS device is formed in a substrate, and includes a first well, a gate, a diffusion region, a source, and a drain. A low voltage device is also formed in the substrate, which includes a second well and a lightly doped drain (LDD) region, wherein the first well and the diffusion region are formed by process steps which also form the second well and the LDD region in the low voltage device, respectively.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: December 16, 2014
    Assignee: Richtek Technology Corporation
    Inventors: Tsung-Yi Huang, Chien-Hao Huang
  • Publication number: 20140361365
    Abstract: One illustrative device includes a source region and a drain region formed in a substrate, wherein the source/drain regions are doped with a first type of dopant material, a gate structure positioned above the substrate that is laterally positioned between the source region and the drain region and a drain-side well region positioned in the substrate under a portion, but not all, of the entire lateral width of the drain region, wherein the drain-side well region is also doped with the first type of dopant material. The device also includes a source-side well region positioned in the substrate under an entire width of the source region and under a portion, but not all, of the drain region and a part of the extension portion of the drain region is positioned under a portion of the gate structure.
    Type: Application
    Filed: June 7, 2013
    Publication date: December 11, 2014
    Inventors: Jerome Ciavatti, Yanxiang Liu
  • Publication number: 20140361366
    Abstract: A lateral double diffusion metal-oxide-semiconductor (LDMOS) transistor is provided. The LDMOS transistor includes a semiconductor substrate having a well region and a drain region in the well region. The LDMOS transistor also includes at least one drifting region in the well region and an annular source region in the drifting region surrounding the drain region. Further, the LDMOS transistor includes at least one annular isolation structure surrounding the drain region in the drifting region. Further, the LDMOS transistor also includes an annular gate dielectric layer on the well region and an annular gate on the annular gate dielectric layer.
    Type: Application
    Filed: October 23, 2013
    Publication date: December 11, 2014
    Applicant: Semiconductor Manufacturing International (Shanghai) Corporation
    Inventors: JIAN XIANG CAI, JUILIN LU, TY CHIU
  • Patent number: 8907422
    Abstract: A semiconductor device includes: a semiconductor substrate including a first semiconductor layer on the semiconductor substrate; multiple semiconductor elements in the semiconductor substrate; and an ineffective region. Each semiconductor element includes: a second semiconductor layer in a surface portion of the first semiconductor layer; a third semiconductor layer disposed in another surface portion of the first semiconductor layer and spaced a part from the second semiconductor layer; and a control layer disposed on a portion of the first semiconductor layer between the second semiconductor layer and the third semiconductor layer. The ineffective region is disposed in the semiconductor substrate between at least two adjacent semiconductor elements; and does not provide a function of the semiconductor elements.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: December 9, 2014
    Assignee: DENSO CORPORATION
    Inventors: Syunsuke Harada, Takashi Nakano, Takuya Okuno
  • Patent number: 8907443
    Abstract: In order to suppress an off leak current of an off transistor for ESD protection, in an NMOS for ESD protection whose isolation region has a shallow trench structure, a drain region is placed apart from the shallow trench isolation region so as not to be in direct contact with the shallow trench isolation region in a region where the drain region of the NMOS transistor for ESD protection is adjacent to at least a gate electrode of the NMOS transistor for ESD protection.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: December 9, 2014
    Assignee: Seiko Instruments Inc.
    Inventor: Hiroaki Takasu
  • Patent number: 8901671
    Abstract: The invention relates to semiconductor components, in particular to a scalable construction for lateral semiconductor components having high current-carrying capacity. A transistor cell according to the invention comprises a control electrode (203), a plurality of source fields (201) and a plurality of drain fields (202). The control electrode completely encloses at least one of the source fields or drain fields. A transistor according to the invention comprises a plurality of transistor cells on a substrate, each of which comprises a source contact field (206) and/or a drain contact field (207). The source contact fields are conductively connected to each other on the other side of the substrate and the drain contact fields are likewise conductively connected to each other on the other side of the substrate.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: December 2, 2014
    Assignee: Forschungsverbund Berlin E.V.
    Inventors: Oliver Hilt, Hans-Joachim Wuerfl