Insulating Layer Of Silicon Nitride Or Silicon Oxynitride Patents (Class 257/649)
  • Patent number: 8378465
    Abstract: 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: Grant
    Filed: January 12, 2011
    Date of Patent: February 19, 2013
    Assignee: International Business Machines Corporation
    Inventors: Yurii A. Vlasov, Fengnian Xia
  • Patent number: 8368170
    Abstract: A method of forming an integrated circuit structure includes providing a semiconductor substrate; and forming a first and a second MOS device. The first MOS device includes a first active region in the semiconductor substrate; and a first gate over the first active region. The second MOS device includes a second active region in the semiconductor substrate; and a second gate over the second active region. The method further include forming a dielectric region between the first and the second active regions, wherein the dielectric region has an inherent stress; and implanting the dielectric region to form a stress-released region in the dielectric region, wherein source and drain regions of the first and the second MOS devices are not implanted during the step of implanting.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: February 5, 2013
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Harry-Hak-Lay Chuang, Kong-Beng Thei, Mong-Song Liang
  • Patent number: 8362596
    Abstract: A dielectric capping layer having a dielectric constant of less than 4.2 is provided that exhibits a higher mechanical and electrical stability to UV and/or E-Beam radiation as compared to conventional dielectric capping layers. Also, the dielectric capping layer maintains a consistent compressive stress upon post-deposition treatments. The dielectric capping layer includes a tri-layered dielectric material in which at least one of the layers has good oxidation resistance, is resistance to conductive metal diffusion, and exhibits high mechanical stability under at least UV curing. The low k dielectric capping layer also includes nitrogen content layers that contain electron donors and double bond electrons. The low k dielectric capping layer also exhibits a high compressive stress and high modulus and is stable under post-deposition curing treatments, which leads to less film and device cracking and improved device reliability.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: January 29, 2013
    Assignee: International Business Machines Corporation
    Inventors: Stephan A. Cohen, Alfred Grill, Thomas J. Haigh, Jr., Xiao H. Liu, Son V. Nguyen, Thomas M. Shaw, Hosadurga Shobha
  • Publication number: 20130009288
    Abstract: A method for fabricating a semiconductor device is disclosed. The method includes the steps of: providing a substrate; forming a dielectric layer on the substrate, wherein the dielectric layer comprises metal interconnects therein; forming a top metal layer on the dielectric layer; and forming a passivation layer on the top metal layer through high-density plasma chemical vapor deposition (HDPCVD) process.
    Type: Application
    Filed: July 7, 2011
    Publication date: January 10, 2013
    Inventors: Shu-Hui Hu, Shih-Feng Su, Hui-Shen Shih, Chih-Chien Liu, Po-Chun Chen, Ya-Jyuan Hung, Bin-Siang Tsai, Chin-Fu Lin
  • Patent number: 8338919
    Abstract: A semiconductor device includes: a semiconductor substrate having a p-MOS region; an element isolation region formed in a surface portion of the semiconductor substrate and defining p-MOS active regions in the p-MOS region; a p-MOS gate electrode structure formed above the semiconductor substrate, traversing the p-MOS active region and defining a p-MOS channel region under the p-MOS gate electrode structure; a compressive stress film selectively formed above the p-MOS active region and covering the p-MOS gate electrode structure; and a stress released region selectively formed above the element isolation region in the p-MOS region and releasing stress in the compressive stress film, wherein a compressive stress along the gate length direction and a tensile stress along the gate width direction are exerted on the p-MOS channel region. The performance of the semiconductor device can be improved by controlling the stress separately for the active region and element isolation region.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: December 25, 2012
    Assignee: Fujitsu Semiconductor Limited
    Inventor: Shigeo Satoh
  • Patent number: 8330257
    Abstract: In a method of manufacturing a thin film transistor substrate, a semiconductor pattern is formed on a substrate, a first etch stop layer and a second etch stop layer are sequentially formed on the semiconductor pattern, and the second etch stop layer and the first etch stop layer are sequentially patterned to form a second etch stop pattern and a first etch stop pattern. Thus, when the second etch stop layer is patterned using an etchant, the first etch stop layer covers the semiconductor pattern, thereby preventing the semiconductor pattern from being etched by the etchant.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: December 11, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Ho Moon, Joon-Hoo Choi, Kyu-Sik Cho, Byoung-Seong Jeong, Yong-Hwan Park
  • Publication number: 20120280373
    Abstract: Articles are described utilizing strengthened glass substrates, for example, ion-exchanged glass substrates, with oxide or nitride containing alkali barrier layers and with semiconductor devices which may be sensitive to alkali migration are described along with methods for making the articles.
    Type: Application
    Filed: May 2, 2012
    Publication date: November 8, 2012
    Inventors: Jiangwei Feng, Mingqian He, Jianfeng Li, Michael S. Pambianchi, Michael Lesley Sorensen
  • Patent number: 8278739
    Abstract: A method for manufacturing is: forming an insulating film over a substrate; forming an amorphous semiconductor film over the insulating film; forming over the amorphous semiconductor film, a silicon nitride film in which a film thickness is equal to or more than 200 nm and equal to or less than 1000 nm, equal to or less than 10 atomic % of oxygen is included, and a relative proportion of nitrogen to silicon is equal to or more than 1.3 and equal to or less than 1.5; irradiating the amorphous semiconductor film with a continuous-wave laser light or a laser light with repetition rate of equal to or more than the wave length of 10 MHz transmitting the silicon nitride film to melt and later crystallize the amorphous semiconductor film to form a crystalline semiconductor film.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: October 2, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Tomoaki Moriwaka
  • Patent number: 8278740
    Abstract: An object of the present invention is to provide a semiconductor device including an insulating layer with a high dielectric strength voltage, a low dielectric constant, and low hygroscopicity. Another object of the present invention is to provide an electronic appliance with high performance and high reliability, which uses the semiconductor device. An insulator containing nitrogen, such as silicon oxynitride or silicon nitride oxide, and an insulator containing nitrogen and fluorine, such as silicon oxynitride added with fluorine or silicon nitride oxide added with fluorine, are alternately deposited so that an insulating layer is formed. By sandwiching an insulator containing nitrogen and fluorine between insulators containing nitrogen, the insulator containing nitrogen and fluorine can be prevented from absorbing moisture and thus a dielectric strength voltage can be increased. Further, an insulator contains fluorine so that a dielectric constant can be reduced.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: October 2, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoshi Toriumi, Noriyoshi Suzuki
  • Publication number: 20120236369
    Abstract: A system for the long-term storage and high-speed retrieval of color images stored on semiconductor substrates. The images are stored on semiconductor substrates by utilizing semiconductor fabrication techniques to produce a plurality of images. A transparent thin-film dielectric varies in thickness to product a color palette.
    Type: Application
    Filed: March 26, 2012
    Publication date: September 20, 2012
    Applicant: Nanoark Corporation
    Inventor: Ajay Pasupuleti
  • Patent number: 8269318
    Abstract: A method for forming an offset spacer of a MOS device is disclosed. The method includes the steps of: providing a substrate having a gate structure thereon; forming a dielectric stack on the substrate and the gate structure, wherein the dielectric stack includes a first dielectric layer, a second dielectric layer, a third dielectric layer, and a fourth dielectric layer; and performing an etching process on the dielectric stack to form an offset spacer around the gate structure.
    Type: Grant
    Filed: May 3, 2010
    Date of Patent: September 18, 2012
    Assignee: United Microelectronics Corp.
    Inventor: Chun Rong
  • Patent number: 8242584
    Abstract: An integrated circuit (IC) chip is provided comprising at least one trench including a stress-inducing material which imparts a stress on a channel region of a device, such as a junction gate field-effect transistor (JFET) or a metal-oxide-semiconductor field-effect transistor (MOSFET). A related method is also disclosed.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: August 14, 2012
    Assignee: International Business Machines Corporation
    Inventors: Renata A. Camillo-Castillo, Robert J. Gauthier, Jr., Richard A. Phelps, Robert M. Rassel, Andreas D. Stricker
  • Patent number: 8227838
    Abstract: A semiconductor device includes a substrate, a compound semiconductor layer formed over the substrate, and a protective insulating film composed of silicon nitride, which is formed over a surface of the compound semiconductor layer and whose film density in an intermediate portion is lower than that in a lower portion.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: July 24, 2012
    Assignee: Fujitsu Limited
    Inventor: Kozo Makiyama
  • Patent number: 8227877
    Abstract: A method of manufacturing a semiconductor bio-sensor comprises providing a substrate, forming a first dielectric layer on the substrate, forming a patterned first conductive layer on the first dielectric layer, the patterned first conductive layer including a first portion and a pair of second portions, forming a second dielectric layer, a third dielectric layer and a fourth dielectric layer in sequence over the patterned first conductive layer, forming cavities into the fourth dielectric layer, forming vias through the cavities, exposing the second portions of the patterned first conductive layer, forming a patterned second conductive layer on the fourth dielectric layer, forming a passivation layer on the patterned second conductive layer, forming an opening to expose a portion of the third dielectric layer over the first portion of the patterned first conductive layer, and forming a chamber through the opening.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: July 24, 2012
    Assignee: Macronix International Co., Ltd.
    Inventors: Ming-Tung Lee, Shih-Chin Lien, Chia-Huan Chang
  • Patent number: 8212286
    Abstract: The semiconductor light receiving element 1 includes a semiconductor substrate 101, and a semiconductor layer having a photo-absorption layer 105 disposed on the top of the semiconductor substrate 101. The semiconductor layer of the semiconductor light receiving element 1 containing at least the photo-absorption layer 105 has a mesa structure, and a side wall of the mesa is provided with a protective film 113 covering the side wall. The protective film 113 is a silicon nitride film containing hydrogen, and a hydrogen concentration in one surface of the protective film 113 located at the side of the mesa side wall is lower than a hydrogen concentration in the other surface of the protective film 113 located at the side that is opposite to the side of the mesa side wall.
    Type: Grant
    Filed: December 25, 2008
    Date of Patent: July 3, 2012
    Assignee: NEC Corporation
    Inventor: Emiko Fujii
  • Publication number: 20120153442
    Abstract: Provided is a process of forming a silicon nitride film having concentration of hydrogen atoms below or equal to 9.9×1020 atoms/cm3 in the silicon nitride film by using a plasma CVD device, which generates plasma by introducing microwaves into a process chamber by using a planar antenna having a plurality of apertures, by setting the pressure inside a process chamber within a range from 0.1 Pa to 6.7 Pa and by performing a plasma CVD by using a raw material gas for film formation including SiCl4 gas and nitrogen gas.
    Type: Application
    Filed: June 20, 2011
    Publication date: June 21, 2012
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Minoru Honda, Masayuki Kohno
  • Patent number: 8198708
    Abstract: A system and method is disclosed for improving complementary metal oxide semiconductor (CMOS) compatible non volatile memory (NVM) retention reliability in memory cells. A memory cell of the invention comprises a backend layer that reduces charge leakage from a floating gate of the memory cell. A first bottom portion of the backend layer is formed from a first layer of silicon oxynitride having a low value of defect/trap density. A second top portion of the backend layer is formed from a second layer of silicon oxynitride having a high value of defect/trap density. The first layer of silicon oxynitride inhibits electron transport and the second layer of silicon oxynitride protects CMOS devices from plasma induced damage.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: June 12, 2012
    Assignee: National Semiconductor Corporation
    Inventors: Jiankang Bu, Henry G. Prosack, Jr., David Courtney Parker, Heather McCulloh
  • Patent number: 8183647
    Abstract: The present invention provides a semiconductor device comprising: a silicon based semiconductor substrate provided with a step including an non-horizontal surface, a horizontal surface and a connection region for connecting the non-horizontal surface and the horizontal surface; a gate insulating film formed in at least a part of the step; and a gate electrode formed on the gate insulating film, wherein the entirety or a part of the gate insulating film is formed of a silicon oxynitride film that contains a rare gas element at a area density of 1010 cm?2 or more in at least a part of the silicon oxynitride film.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: May 22, 2012
    Assignees: Sharp Kabushiki Kaisha
    Inventors: Tadahiro Omi, Naoki Ueda
  • Publication number: 20120104568
    Abstract: To provide a method for manufacturing a large-area semiconductor device, to provide a method for manufacturing a semiconductor device with high efficiency, and to provide a highly-reliable semiconductor device in the case of using a large-area substrate including an impurity element. A plurality of single crystal semiconductor substrates are concurrently processed to manufacture an SOI substrate, so that an area of a semiconductor device can be increased and a semiconductor device can be manufactured with improved efficiency. In specific, a series of processes is performed using a tray with which a plurality of semiconductor substrates can be concurrently processed. Here, the tray is provided with at least one depression for holding single crystal semiconductor substrates.
    Type: Application
    Filed: January 11, 2012
    Publication date: May 3, 2012
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventor: Shunpei YAMAZAKI
  • Patent number: 8154107
    Abstract: A semiconductor device having at least one transistor covered by an ultra-stressor layer, and method for fabricating such a device. In an NMOS device, the ultra-stressor layer includes a tensile stress film over the source and drain regions, and a compressive stress film over the poly region. In a PMOS device, the ultra-stressor layer includes a compressive stress film over the source and drain regions and a tensile stress film over the poly region. In a preferred embodiment, the semiconductor device includes a PMOS transistor and an NMOS transistor forming a CMOS device and covered with an ultra stressor layer.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: April 10, 2012
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Chung-Hu Ke, Chih-Hsin Ko, Wen-Chin Lee
  • Patent number: 8120124
    Abstract: A method for forming silicon nitride films on semiconductor devices is provided. In one embodiment of the method, a silicon-comprising substrate is first exposed to a mixture of dichlorosilane (DCS) and a nitrogen-comprising gas to deposit a thin silicon nitride seeding layer on the surface, and then exposed to a mixture of silicon tetrachloride (TCS) and a nitrogen comprising gas to deposit a TCS silicon nitride layer on the DCS seeding layer. In another embodiment, the method involves first nitridizing the surface of the silicon-comprising substrate prior to forming the DCS nitride seeding layer and the TCS nitride layer. The method achieves a TCS nitride layer having a sufficient thickness to eliminate bubbling and punch-through problems and provide high electrical performance regardless of the substrate type. Also provided are methods of forming a capacitor, and the resulting capacitor structures.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: February 21, 2012
    Assignee: Micron Technology, Inc.
    Inventors: Lingyi A. Zheng, Er-Xuan Ping
  • Patent number: 8115271
    Abstract: A method of forming an integrated circuit structure includes providing a semiconductor substrate; and forming a first and a second MOS device. The first MOS device includes a first active region in the semiconductor substrate; and a first gate over the first active region. The second MOS device includes a second active region in the semiconductor substrate; and a second gate over the second active region. The method further include forming a dielectric region between the first and the second active regions, wherein the dielectric region has an inherent stress; and implanting the dielectric region to form a stress-released region in the dielectric region, wherein source and drain regions of the first and the second MOS devices are not implanted during the step of implanting.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: February 14, 2012
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Harry Chuang, Kong-Beng Thei, Mong-Song Liang
  • Patent number: 8102030
    Abstract: A semiconductor device includes: a semiconductor substrate having a p-MOS region; an element isolation region formed in a surface portion of the semiconductor substrate and defining p-MOS active regions in the p-MOS region; a p-MOS gate electrode structure formed above the semiconductor substrate, traversing the p-MOS active region and defining a p-MOS channel region under the p-MOS gate electrode structure; a compressive stress film selectively formed above the p-MOS active region and covering the p-MOS gate electrode structure; and a stress released region selectively formed above the element isolation region in the p-MOS region and releasing stress in the compressive stress film, wherein a compressive stress along the gate length direction and a tensile stress along the gate width direction are exerted on the p-MOS channel region. The performance of the semiconductor device can be improved by controlling the stress separately for the active region and element isolation region.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: January 24, 2012
    Assignee: Fujitsu Semiconductor Limited
    Inventor: Shigeo Satoh
  • Patent number: 8093640
    Abstract: A method and system for fabricating a stacked capacitor and a DMOS transistor are disclosed. In one aspect, the method and system include providing a bottom plate, an insulator, and an additional layer including first and second plates. The insulator covers at least a portion of the bottom plate and resides between the first and second top plates and the bottom plate. The first and second top plates are electrically coupled through the bottom plate. In another aspect, the method and system include forming a gate oxide. The method and system also include providing SV well(s) after the gate oxide is provided. A portion of the SV well(s) resides under a field oxide region of the device. Each SV well includes first, second, and third implants having a sufficient energy to provide the portion of the SV well at a desired depth under the field oxide region without significant additional thermal processing. A gate, source, and drain are also provided.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: January 10, 2012
    Assignee: Atmel Corporation
    Inventors: Stefan Schwantes, Volker Dudek, Michael Graf, Alan Renninger, James Shen
  • Patent number: 8053871
    Abstract: A metal barrier is realized on top of a metal portion of a semiconductor product, by forming a metal layer on the surface of the metal portion, with this metal layer comprising a cobalt-based metal material. Then, after an optional deoxidation step, a silicidation step and a nitridation step of the cobalt-based metal material of the metal layer are performed. The antidiffusion properties of copper atoms (for example) and the antioxidation properties of the metal barrier are improved.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: November 8, 2011
    Assignee: STMicroelectronics S.A.
    Inventors: Pierre Caubet, Laurin Dumas, Cecile Jenny
  • Patent number: 8039929
    Abstract: A CMOS device comprising a FinFET comprises at least one fin structure comprising a source region; a drain region; and a channel region comprising silicon separating the source region from the drain region. The FinFET further comprises a gate region comprising a N+ polysilicon layer on one side of the channel region and a P+ polysilicon layer on an opposite side of the channel region, thereby, partitioning the fin structure into a first side and a second side, respectively. The channel region is in mechanical tension on the first side and in mechanical compression on the second side. The FinFET may comprise any of a nFET and a pFET, wherein the nFET comprises a N-channel inversion region in the first side, and wherein the pFET comprises a P-channel inversion region in the second side. The CMOS device may further comprise a tensile film and a relaxed film on opposite sides of the fin structure adjacent to the source and drain regions, and an oxide cap layer over the fin structure.
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: October 18, 2011
    Assignee: International Business Machines Corporation
    Inventors: Brent A. Anderson, Edward J. Nowak
  • Patent number: 8035200
    Abstract: A semiconductor structure. The semiconductor structure includes a semiconductor layer, a charge accumulation layer on top of the semiconductor layer, a doped region in direct physical contact with the semiconductor layer; and a device layer on and in direct physical contact with the charge accumulation layer. The charge accumulation layer includes trapped charges of a first sign. The doped region and the semiconductor layer forms a P?N junction diode. The P?N junction diode includes free charges of a second sign opposite to the first sign. The trapped charge in the charge accumulation layer exceeds a preset limit above which semiconductor structure is configured to malfunction. A first voltage is applied to the doped region. A second voltage is applied to the semiconductor layer. A third voltage is applied to the device layer. The third voltage exceeds the first voltage and the second voltage.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: October 11, 2011
    Assignee: International Business Machines Corporation
    Inventors: John M. Aitken, Ethan Harrison Cannon, Alvin Wayne Strong
  • Patent number: 8022442
    Abstract: A semiconductor device has: a silicon substrate; trench formed downward from the surface of the silicon substrate, the trench defining active regions on the surface of the silicon substrate; a first liner layer of a silicon nitride film covering an inner wall of the trench; a second liner layer of a silicon nitride layer formed on the first liner layer; an element isolation region of an insulator formed on the second liner layer; a p-channel MOS transistor formed in and on one of the active regions; a contact etch stopper layer of a silicon nitride layer not having a ultraviolet shielding ability, formed above the silicon substrate, and covering the p-channel MOS transistor; and a light shielding film of a silicon nitride layer having the ultraviolet shielding ability and formed above the contact etch stopper layer.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: September 20, 2011
    Assignee: Fujitsu Semiconductor Limited
    Inventor: Yoshiyuki Ookura
  • Publication number: 20110215447
    Abstract: A semiconductor device including a low dielectric constant film of which the relative dielectric constant is less than 3.5, is provided with one or more seal rings that are moisture blocking walls forming a closed loop in a plan view, and where at least one of the seal rings includes a seal ring protrusion portion in inward protruding form in the vicinity of a chip corner.
    Type: Application
    Filed: May 20, 2011
    Publication date: September 8, 2011
    Applicant: Renesas Electronics Corporation
    Inventors: Takeshi Furusawa, Norio Miura, Kinya Goto, Masazumi Matsuura
  • Patent number: 8013371
    Abstract: A method for forming silicon nitride films on semiconductor devices is provided. In one embodiment of the method, a silicon-comprising substrate is first exposed to a mixture of dichlorosilane (DCS) and a nitrogen-comprising gas to deposit a thin silicon nitride seeding layer on the surface, and then exposed to a mixture of silicon tetrachloride (TCS) and a nitrogen comprising gas to deposit a TCS silicon nitride layer on the DCS seeding layer. In another embodiment, the method involves first nitridizing the surface of the silicon-comprising substrate prior to forming the DCS nitride seeding layer and the TCS nitride layer. The method achieves a TCS nitride layer having a sufficient thickness to eliminate bubbling and punch-through problems and provide high electrical performance regardless of the substrate type. Also provided are methods of forming a capacitor, and the resulting capacitor structures.
    Type: Grant
    Filed: March 4, 2004
    Date of Patent: September 6, 2011
    Assignee: Micron Technology, Inc.
    Inventors: Lingyi A Zheng, Er-Xuan Ping
  • Patent number: 7999295
    Abstract: A manufacturing method for stacked, non-volatile memory devices provides a plurality of bitline layers and wordline layers with charge trapping structures. The bitline layers have a plurality of bitlines formed on an insulating layer, such as silicon on insulator technologies. The wordline layers are patterned with respective pluralities of wordlines and charge trapping structures orthogonal to the bitlines.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: August 16, 2011
    Assignee: Macronix International Co., Ltd.
    Inventors: Erh-Kun Lai, Hang-Ting Lue, Kuang-Yeu Hsieh
  • Publication number: 20110175208
    Abstract: An object of the present invention is to provide a semiconductor device including an insulating layer with a high dielectric strength voltage, a low dielectric constant, and low hygroscopicity. Another object of the present invention is to provide an electronic appliance with high performance and high reliability, which uses the semiconductor device. An insulator containing nitrogen, such as silicon oxynitride or silicon nitride oxide, and an insulator containing nitrogen and fluorine, such as silicon oxynitride added with fluorine or silicon nitride oxide added with fluorine, are alternately deposited so that an insulating layer is formed. By sandwiching an insulator containing nitrogen and fluorine between insulators containing nitrogen, the insulator containing nitrogen and fluorine can be prevented from absorbing moisture and thus a dielectric strength voltage can be increased. Further, an insulator contains fluorine so that a dielectric constant can be reduced.
    Type: Application
    Filed: April 1, 2011
    Publication date: July 21, 2011
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Satoshi TORIUMI, Noriyoshi SUZUKI
  • Patent number: 7977772
    Abstract: A semiconductor device and system for a hybrid metal fully silicided (FUSI) gate structure is disclosed. The semiconductor system comprises a PMOS gate structure, the PMOS gate structure including a first high-? dielectric layer, a P-metal layer, a mid-gap metal layer, wherein the mid-gap metal layer is formed between the high-? dielectric layer, the P-metal layer and a fully silicided layer formed on the P-metal layer. The semiconductor system further comprises an NMOS gate structure, the NMOS gate structure includes a second high-? dielectric layer, the fully silicided layer, and the mid-gap metal layer, wherein the mid-gap metal layer is formed between the high-? dielectric and the fully silicided layer.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: July 12, 2011
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chen-Hua Yu, Cheng-Tung Lin, Cheng-Hung Chang, Hsiang-Yi Wang, Chen-Nan Yeh
  • Patent number: 7977202
    Abstract: A method of forming an integrated circuit structure includes providing a semiconductor substrate; and forming a first and a second MOS device. The first MOS device includes a first active region in the semiconductor substrate; and a first gate over the first active region. The second MOS device includes a second active region in the semiconductor substrate; and a second gate over the second active region. The method further include forming a dielectric region between the first and the second active regions, wherein the dielectric region has an inherent stress; and implanting the dielectric region to form a stress-released region in the dielectric region, wherein source and drain regions of the first and the second MOS devices are not implanted during the step of implanting.
    Type: Grant
    Filed: July 18, 2008
    Date of Patent: July 12, 2011
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Harry Chuang, Kong-Beng Thei, Mong-Song Liang
  • Publication number: 20110156223
    Abstract: An integrated circuit (IC) chip is provided comprising at least one trench including a stress-inducing material which imparts a stress on a channel region of a device, such as a junction gate field-effect transistor (JFET) or a metal-oxide-semiconductor field-effect transistor (MOSFET). A related method is also disclosed.
    Type: Application
    Filed: December 28, 2009
    Publication date: June 30, 2011
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Renata A. Camillo-Castillo, Robert J. Gauthier, JR., Richard A. Phelps, Robert M. Rassel, Andreas D. Stricker
  • Publication number: 20110147817
    Abstract: Semiconductor component having an oxide layer. One embodiment includes a first semiconductor region and a second semiconductor region. An oxide layer is arranged between the first and second semiconductor region. The first semiconductor region and the oxide layer form a first semiconductor-oxide interface. The second semiconductor region and the oxide layer form a second semiconductor-oxide interface. The oxide layer has a chlorine concentration, the chlorine concentration having a first maximum in the region of the first semiconductor-oxide interface, and having a second maximum in the region of the second semiconductor-oxide interface.
    Type: Application
    Filed: December 17, 2009
    Publication date: June 23, 2011
    Applicant: INFINEON TECHNOLOGIES AUSTRIA AG
    Inventors: Hans-Joachim Schulze, Helmut Strack, Hans Weber
  • Patent number: 7960764
    Abstract: Disclosed is a semiconductor device manufacturing method in which a silicon nitride film is formed to cover an n-channel transistor formed on a semiconductor substrate and to apply a tensile stress in a channel length direction to a channel of the n-channel transistor, the method includes: forming a first-layer silicon nitride film above the n-channel transistor; irradiating the first-layer silicon nitride film with ultraviolet radiation; and after the ultraviolet irradiation, forming at least one silicon nitride film thinner than the first-layer silicon nitride film above the first-layer silicon nitride film. Silicon nitride films formed to apply the tensile stress is formed by respective steps.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: June 14, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshiaki Idaka, Kazuyuki Yahiro
  • Patent number: 7960763
    Abstract: A semiconductor device includes a substrate, a compound semiconductor layer formed over the substrate, and a protective insulating film composed of silicon nitride, which is formed over a surface of the compound semiconductor layer and whose film density in an intermediate portion is lower than that in a lower portion.
    Type: Grant
    Filed: August 6, 2008
    Date of Patent: June 14, 2011
    Assignee: Fujitsu Limited
    Inventor: Kozo Makiyama
  • Patent number: 7948063
    Abstract: Semiconductor devices required forming a stress control film to handle different stresses on each side when optimizing the stress on the respective P channel and N channel sections. A unique feature of the semiconductor device of this invention is that P and N channel stress are respectively optimized by making use of a stress control film jointly for the P and N channels that conveys stress in different directions by utilizing the film thickness.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: May 24, 2011
    Assignee: Renesas Electronics Corporation
    Inventor: Hitoshi Mitani
  • Publication number: 20110095402
    Abstract: An ?-SiNx:H gate dielectric film deposited over a substrate surface having a surface area larger than 100 cm×100 cm, wherein said ?-SiNx:H gate dielectric film exhibits a film thickness which varies by less than about 20% over said surface area, a film density which varies by less than about 17% over said surface area, and wherein said film exhibits a Si—H bonded structure content of less than about 15 atomic % over said surface area.
    Type: Application
    Filed: December 30, 2010
    Publication date: April 28, 2011
    Inventors: Beom Soo Park, Soo Young Choi, Tae Kyung Won, John M. White
  • Patent number: 7915646
    Abstract: The nitride semiconductor material according to the present invention includes a group III nitride semiconductor and a group IV nitride formed on the group III nitride semiconductor, where an interface between the group III nitride semiconductor and the group IV nitride has a regular atomic arrangement. Moreover, an arrangement of nitrogen atoms of the group IV nitride in the interface and an arrangement of group III atoms of the group III nitride semiconductor in the interface may be substantially identical.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: March 29, 2011
    Assignee: Panasonic Corporation
    Inventors: Toshiyuki Takizawa, Tetsuzo Ueda
  • Publication number: 20110062562
    Abstract: A dielectric layer structure includes an interlayer dielectric (ILD) layer covering at least a metal interconnect structure and a single tensile hydrophobic film. The ILD layer further includes a low-k dielectric layer, and the single tensile hydrophobic film is positioned on the low-k dielectric layer for counteracting at least a part of a stress of the low-k dielectric layer.
    Type: Application
    Filed: November 18, 2010
    Publication date: March 17, 2011
    Inventor: Chin-Hsiang Lin
  • Patent number: 7902640
    Abstract: A dielectric layer including a film with silicon compound contain oxygen and a film with silicon compound contain nitrogen is provided. A ratio of Si—N group absorption intensity to a thickness of the film with silicon compound contain nitrogen in an FTIR spectrum is substantially greater than or substantially equal to 0.67/?m. The dielectric layer can be incorporated in switch devices.
    Type: Grant
    Filed: September 29, 2007
    Date of Patent: March 8, 2011
    Assignee: Au Optronics Corporation
    Inventor: Chieh-Chou Hsu
  • Patent number: 7880243
    Abstract: FET device structures are disclosed with the PFET and NFET devices having high-k dielectric gate insulators and metal containing gates. The metal layers of the gates in both the NFET and PFET devices have been fabricated from a single common metal layer. Due to the single common metal, device fabrication is simplified, requiring a reduced number of masks. Also, as a further consequence of using a single layer of metal for the gates of both type of devices, the terminal electrodes of NFETs and PFETs can be butted to each other in direct physical contact. Device thresholds are adjusted by the choice of the common metal material and oxygen exposure of the high-k dielectric. Threshold values are aimed for low power consumption device operation.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: February 1, 2011
    Assignee: International Business Machines Corporation
    Inventors: Bruce B. Doris, Eduard Albert Cartier, Barry Paul Linder, Vijay Narayanan, Vamsi Paruchuri
  • Patent number: 7859088
    Abstract: A semiconductor device manufacturing method capable of making in-plane temperature distribution on a wafer uniform at heat treatment time. Before heat treatment is performed by irradiating the wafer with lamp light from the side of a device formed area where semiconductor devices are to be formed, an SiN film with certain thickness the reflection factor of which is equal to the average reflection factor of the device formed area is formed in an edge portion outside the device formed area. By doing so, reflection factors on the surface of the wafer irradiated with lamp light can be made uniform and uniform temperature distribution on the wafer can be obtained at heat treatment time. As a result, in-plane variations in the characteristics of semiconductor devices on the wafer can be made small and high-quality semiconductor devices can be manufactured.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: December 28, 2010
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Takae Sukegawa, Ryou Nakamura
  • Publication number: 20100320548
    Abstract: A thin silicon-rich nitride film (e.g., having a thickness in the range of around 100A to 10000A) deposited using low-pressure chemical vapor deposition (LPCVD) is used for etch stop during vapor HF etching in various MEMS wafer fabrication processes and devices. The LPCVD silicon-rich nitride film may replace, or be used in combination with, a LPCVD stoichiometric nitride layer in many existing MEMS fabrication processes and devices. The LPCVD silicon-rich nitride film is deposited at high temperatures (e.g., typically around 650-900 degrees C.). Such a LPCVD silicon-rich nitride film generally has enhanced etch selectivity to vapor HF and other harsh chemical environments compared to stoichiometric silicon nitride and therefore a thinner layer typically can be used as an embedded etch stop layer in various MEMS wafer fabrication processes and devices and particularly for vapor HF etching processes, saving time and money in the fabrication process.
    Type: Application
    Filed: June 10, 2010
    Publication date: December 23, 2010
    Applicant: ANALOG DEVICES, INC.
    Inventors: Christine H. Tsau, Thomas Kieran Nunan
  • Publication number: 20100320512
    Abstract: Disclosed is a semiconductor device manufacturing method in which a silicon nitride film is formed to cover an n-channel transistor formed on a semiconductor substrate and to apply a tensile stress in a channel length direction to a channel of the n-channel transistor, the method includes: forming a first-layer silicon nitride film above the n-channel transistor; irradiating the first-layer silicon nitride film with ultraviolet radiation; and after the ultraviolet irradiation, forming at least one silicon nitride film thinner than the first-layer silicon nitride film above the first-layer silicon nitride film. Silicon nitride films formed to apply the tensile stress is formed by respective steps.
    Type: Application
    Filed: August 25, 2010
    Publication date: December 23, 2010
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Toshiaki Idaka, Kazuyuki Yahiro
  • Patent number: 7838968
    Abstract: There are disclosed TFTs having improved reliability. An interlayer dielectric film forming the TFTs is made of a silicon nitride film. Other interlayer dielectric films are also made of silicon nitride. The stresses inside the silicon nitride films forming these interlayer dielectric films are set between ?5×109 and 5×109 dyn/cm2. This can suppress peeling of the interlayer dielectric films and difficulties in forming contact holes. Furthermore, release of hydrogen from the active layer can be suppressed. In this way, highly reliable TFTs can be obtained.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: November 23, 2010
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hongyong Zhang, Satoshi Teramoto
  • Patent number: 7829978
    Abstract: An N-MOS and/or P-MOS device having enhanced performance such as an FET suitable for use in a CMOS circuit. The device comprises both an “L-like” shaped layer or spacer on the side walls of a gate structure as well as a CESL (contact-etch stop layer) that covers the gate structure and surrounding substrate to induce increase tensile stresses in the N-MOS device and increased compressive stresses in the P-MOS device.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: November 9, 2010
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Shang-Chih Chen, Shih-Hsieng Huang, Chih-Hao Wang
  • Patent number: RE41948
    Abstract: A semiconductor device is provided with a first insulating film, a first wiring layer formed in the first insulating film, a second insulating film formed above the first wiring layer and the first insulating film, the second insulating film including a low dielectric constant film, a second wiring layer formed in the second insulating film and coupled to the first wiring layer through a first connection section, and a third insulating film formed above the second wiring layer and the second insulating film and serving as one of an interlayer insulating film and a passivation film, and at least one of the first and third insulating films being one of a film formed mainly of SiON, a film formed mainly of SiN, and a laminated film being the films formed mainly of SiON or SiN respectively.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: November 23, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Noriaki Matsunaga