Microwave Gas Energizing Patents (Class 438/772)
  • Patent number: 9829790
    Abstract: Methods disclosed herein provide apparatus and method for applying an electric field and/or a magnetic field to a photoresist layer without air gap intervention during photolithography processes.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: November 28, 2017
    Assignee: Applied Materials, Inc.
    Inventors: Douglas A. Buchberger, Jr., Sang Ki Nam, Viachslav Babayan, Christine Y. Ouyang, Ludovic Godet, Srinivas D. Nemani
  • Patent number: 9497872
    Abstract: Forming a 3D topology by forming a monolayer of nano-particles on a stainless steel surface, masking the stainless steel surface forming at least one unmasked regions, the unmasked region having an average density of nano-particles less than a critical average density, and introducing a plurality of exogenous atoms into the stainless steel surface only in the unmasked regions, the exogenous atoms causing the associated metal lattice to expand and harden and have an increase corrosion resistance, thereby selectively forming a 3D topology on the stainless steel surface.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: November 15, 2016
    Assignee: Apple Inc.
    Inventors: Douglas J. Weber, Naoto Matsuyuki
  • Publication number: 20140361336
    Abstract: The disclosure relates to a fin structure of a semiconductor device. An exemplary fin structure for a semiconductor device comprises a lower portion protruding from a major surface of a substrate, wherein the lower portion comprises a first semiconductor material having a first lattice constant; an upper portion having an interface with the lower portion, wherein the upper portion comprises a second semiconductor material having a second lattice constant different from the first lattice constant; a first pair of notches lower than the interface and extending into opposite sides of the lower portion, wherein each first notch have a first width; and a second pair of notches extending into opposite sides of the interface, wherein each second notch have a second width greater than the first width.
    Type: Application
    Filed: June 11, 2013
    Publication date: December 11, 2014
    Inventors: Chung-Hsien Chen, Tung Ying Lee, Yu-Lien Huang, Chi-Wen Liu
  • Patent number: 8906790
    Abstract: In some embodiments of the present invention, methods of using one or more small spot showerhead apparatus to deposit materials using CVD, PECVD, ALD, or PEALD on small spots in a site isolated, combinatorial manner are described. The small spot showerheads may be configured within a larger combinatorial showerhead to allow multi-layer film stacks to be deposited in a combinatorial manner.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: December 9, 2014
    Assignee: Intermolecular, Inc.
    Inventors: Albert Lee, Tony P. Chiang, Jason Wright
  • Patent number: 8822349
    Abstract: A method of making a semiconductor structure is provided. The method includes forming a dielectric layer using a high density plasma oxidation process. The dielectric layer is on a storage layer and the thickness of the storage layer is reduced during the high density plasma oxidation process.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: September 2, 2014
    Assignee: Cypress Semiconductor Corporation
    Inventors: Jeong Soo Byun, Krishnaswamy Ramkumar
  • Patent number: 8815731
    Abstract: A semiconductor package and a method for fabricating the same. The semiconductor package includes a first substrate including a first pad, a second substrate spaced apart from the first substrate and where a second pad is formed to face the first pad, a first bump electrically connecting the first pad to the second pad, and a second bump mechanically connecting the first substrate to the second substrate is disposed between the first substrate where the first pad is not formed and the second substrate where the second pad is not formed. A coefficient of thermal expansion (CTE) of the second bump is smaller than that of the first bump.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: August 26, 2014
    Assignee: SAMSUNG Electronics Co., Ltd.
    Inventors: Young Lyong Kim, Hyeongseob Kim, Jongho Lee, Eunchul Ahn
  • Publication number: 20140179117
    Abstract: A method for forming an oxide layer on a substrate is described, wherein a plasma is generated adjacent to at least one surface of the substrate by means of microwaves from a gas containing oxygen, wherein the microwaves are coupled into the gas by a magnetron via at least one microwave rod, which is arranged opposite to the substrate and comprises an outer conductor and an inner conductor. During the formation of the oxide layer, the mean microwave power density is set to P=0.8-10 W/cm2, the plasma duration is set to t=0.1 to 600 s, the pressure is set to p=2.67-266.64 Pa (20 to 2000 mTorr) and a distance between substrate surface and microwave rod is set to d=5-120 mm. The above and potentially further process conditions are matched to each other such that the substrate is held at a temperature below 200° C. and an oxide growth is induced on the surface of the substrate facing the plasma.
    Type: Application
    Filed: July 12, 2012
    Publication date: June 26, 2014
    Applicant: Centrotherm Thermal Solutions GmbH & Co. KG
    Inventors: Jurgen Niess, Wilfried Lerch, Wilhelm Kegel, Alexander Gschwandtner
  • Patent number: 8741779
    Abstract: A plasma processing apparatus for processing an object to be processed using a plasma. The apparatus includes a processing chamber defining a processing cavity for containing an object to be processed and a process gas therein, a microwave radiating antenna having a microwave radiating surface for radiating a microwave in order to excite a plasma in the processing cavity, and a dielectric body provided so as to be opposed to the microwave radiating surface, in which the distance D between the microwave radiating surface and a surface of the dielectric body facing away from the microwave radiating surface, which is represented with the wavelength of the microwave being a distance unit, is determined to be in the range satisfying the inequality 0.7×n/4?D?1.3×n/4 (n being a natural number).
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: June 3, 2014
    Assignees: ROHM Co., Ltd.
    Inventors: Tadahiro Ohmi, Kazuhide Ino, Takahiro Arakawa
  • Patent number: 8609519
    Abstract: In some embodiments of the present invention, methods of using one or more small spot showerhead apparatus to deposit materials using CVD, PECVD, ALD, or PEALD on small spots in a site isolated, combinatorial manner are described. The small spot showerheads may be configured within a larger combinatorial showerhead to allow multi-layer film stacks to be deposited in a combinatorial manner.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: December 17, 2013
    Assignee: Intermolecular, Inc.
    Inventors: Albert Lee, Tony P. Chiang, Jason Wright
  • Patent number: 8547085
    Abstract: An arrangement for measuring process parameters within a processing chamber is provided. The arrangement includes a probe arrangement disposed in an opening of an upper electrode. Probe arrangement includes a probe head, which includes a head portion and a flange portion. The arrangement also includes an o-ring disposed between the upper electrode and the flange portion. The arrangement further includes a spacer made of an electrically insulative material positioned between the head portion and the opening of the upper electrode to prevent the probe arrangement from touching the upper electrode. The spacer includes a disk portion configured for supporting an underside of the flange portion. The spacer also includes a hollow cylindrical portion configured to encircle the head portion. The spacer forms a right-angled path between the o-ring and an opening to the processing chamber to prevent direct line-of-sight path between the o-ring and the opening to the processing chamber.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: October 1, 2013
    Assignee: Lam Research Corporation
    Inventors: Jean-Paul Booth, Douglas Keil
  • Patent number: 8513137
    Abstract: A plasma processing apparatus for processing an object to be processed using a plasma. The apparatus includes a processing chamber defining a processing cavity for containing an object to be processed and a process gas therein, a microwave radiating antenna having a microwave radiating surface for radiating a microwave in order to excite a plasma in the processing cavity, and a dielectric body provided so as to be opposed to the microwave radiating surface, in which the distance D between the microwave radiating surface and a surface of the dielectric body facing away from the microwave radiating surface, which is represented with the wavelength of the microwave being a distance unit, is determined to be in the range satisfying the inequality 0.7×n/4?D?1.3×n/4 (n being a natural number).
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: August 20, 2013
    Assignees: Rohm Co., Ltd., Tadahiro Ohmi
    Inventors: Tadahiro Ohmi, Kazuhide Ino, Takahiro Arakawa
  • Patent number: 8503189
    Abstract: Provided are a bonded structure by a lead-free solder and an electronic article comprising the bonded structure. The bonded structure has a stable bonding interface with respect to a change in process of time, an enough strength and resistance to occurrence of whiskers while keeping good wettability of the solder. In the bonded structure, a lead-free Sn—Ag—Bi alloy solder is applied to an electrode through an Sn—Bi alloy layer. The Sn—Bi alloy, preferably, comprises 1 to 20 wt % Bi in order to obtain good wettability of the solder. In order to obtain desirable bonding characteristics having higher reliability in the invention, a copper layer is provided under the Sn—Bi alloy layer thereby obtaining an enough bonding strength.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: August 6, 2013
    Assignee: Renesas Electronics Corporation
    Inventors: Hanae Shimokawa, Tasao Soga, Hiroaki Okudaira, Toshiharu Ishida, Tetsuya Nakatsuka, Yoshiharu Inaba, Asao Nishimura
  • Patent number: 8486792
    Abstract: A silicon compound gas, an oxidizing gas, and a rare gas are supplied into a chamber (2) of a plasma processing apparatus (1). A microwave is supplied into the chamber (2), and a silicon oxide film is formed on a target substrate with plasma generated by the microwave. A partial pressure ratio of the rare gas is 10% or more of a total gas pressure of the silicon compound gas, the oxidizing gas, and the rare gas, and an effective flow ratio of the silicon compound gas and the oxidizing gas (oxidizing gas/silicon compound gas) is not less than 3 but not more than 11.
    Type: Grant
    Filed: May 11, 2009
    Date of Patent: July 16, 2013
    Assignee: Tokyo Electron Limited
    Inventors: Hirokazu Ueda, Yoshinobu Tanaka, Yusuke Ohsawa, Toshihisa Nozawa, Takaaki Matsuoka
  • Patent number: 8389412
    Abstract: The invention relates to a finishing method for a silicon-on-insulator (SOI) substrate that includes an oxide layer buried between an active silicon layer and a support layer of silicon. The method includes applying the following steps in succession: a first rapid thermal annealing (RTA) of the SOI substrate; a sacrificial oxidation of the active silicon layer of the substrate conducted to remove a first oxide thickness; a second RTA of the substrate; and a second sacrificial oxidation of the active silicon layer conducted to remove a second oxide thickness that is thinner than the first oxide thickness.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: March 5, 2013
    Assignee: Soitec
    Inventors: Walter Schwarzenbach, Sébastien Kerdiles, Patrick Reynaud, Ludovic Ecarnot, Eric Neyret
  • Patent number: 8318584
    Abstract: The formation of a gap-filling silicon oxide layer with reduced volume fraction of voids is described. The deposition involves the formation of an oxygen-rich less-flowable liner layer before an oxygen-poor more-flowable gapfill layer. However, the liner layer is deposited within the same chamber as the gapfill layer. The liner layer and the gapfill layer may both be formed by combining a radical component with an unexcited silicon-containing precursor (i.e. not directly excited by application of plasma power). The liner layer has more oxygen content than the gapfill layer and deposits more conformally. The deposition rate of the gapfill layer may be increased by the presence of the liner layer. The gapfill layer may contain silicon, oxygen and nitrogen and be converted at elevated temperature to contain more oxygen and less nitrogen. The presence of the gapfill liner provides a source of oxygen underneath the gapfill layer to augment the gas phase oxygen introduced during the conversion.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: November 27, 2012
    Assignee: Applied Materials, Inc.
    Inventors: DongQing Li, Jingmei Liang, Nitin K. Ingle
  • Publication number: 20120252226
    Abstract: A plasma processing method performs a plasma oxidation on a substrate, on which a trench is formed after an oxide film is formed, by using a plasma processing apparatus for plasma-processing an object by using microwave plasma. In the plasma processing method, the substrate is mounted on a mounting table to which an ion attraction high frequency voltage is applied, and the plasma oxidation is performed while applying the ion attraction high frequency voltage to the substrate. Further, a process gas used in the plasma oxidation is a mixture of a rare gas having smaller atomic weight than that of argon gas, and oxygen gas, and the plasma processing is performed at a pressure of 6.7 to 133 Pa in a depressurized chamber.
    Type: Application
    Filed: March 21, 2012
    Publication date: October 4, 2012
    Applicant: Tokyo Electron Limited
    Inventors: Yoshiro KABE, Takashi KOBAYASHI, Ryota YONEZAWA
  • Patent number: 8273641
    Abstract: Apparatus and method for plasma deposition of thin film photovoltaic materials at microwave frequencies. The apparatus avoids unintended deposition on windows or other microwave transmission elements that couple microwave energy to deposition species. The apparatus includes a microwave applicator with one or more conduits passing therethrough that carry deposition species. The applicator transfers microwave energy to the deposition species to activate or energize them to a reactive state. The conduits physically isolate deposition species that would react or otherwise combine to form a thin film material at the point of microwave power transfer and deliver the microwave-excited species to a deposition chamber. One or more supplemental material streams may be delivered directly to the deposition chamber without passing through the microwave applicator and may combine with deposition species exiting the one or more conduits to form a thin film material.
    Type: Grant
    Filed: December 31, 2010
    Date of Patent: September 25, 2012
    Assignee: Ovshinsky Innovation LLC
    Inventor: Stanford R. Ovshinsky
  • Patent number: 8236706
    Abstract: Plasma assisted low temperature radical oxidation is described. The oxidation is selective to metals or metal oxides that may be present in addition to the silicon being oxidized. Selectivity is achieved by proper selection of process parameters, mainly the ratio of H2 to O2 gas. The process window may be enlarged by injecting H2O steam into the plasma, thereby enabling oxidation of silicon in the presence of TiN and W, at relatively low temperatures. Selective oxidation is improved by the use of an apparatus having remote plasma and flowing radicals onto the substrate, but blocking ions from reaching the substrate.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: August 7, 2012
    Assignee: Mattson Technology, Inc.
    Inventors: Bruce W. Peuse, Yaozhi Hu, Paul Janis Timans, Guangcai Xing, Wilfried Lerch, Sing-Pin Tay, Stephen E. Savas, Georg Roters, Zsolt Nenyei, Ashok Sinha
  • Patent number: 8153502
    Abstract: Methods of filling cavities or trenches. More specifically, methods of filling a cavity or trench in a semiconductor layer are provided. The methods include depositing a first dielectric layer into the trench by employing a conformal deposition process. Next, the first dielectric layer is etched to create a recess in the trench within the first dielectric layer. The recesses are then filled with a second dielectric layer by employing a high density plasma deposition process. The techniques may be particularly useful in filling cavities and trenches having narrow widths and/or high aspect ratios.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: April 10, 2012
    Assignee: Micron Technology, Inc.
    Inventors: Li Li, Ronald Weimer, Richard Stocks, Chris Hill
  • Patent number: 8148275
    Abstract: A method for forming dielectric films including metal nitride silicate on a silicon substrate, comprises a first step of depositing a film containing metal and silicon on a silicon substrate in a non-oxidizing atmosphere using a sputtering method; a second step of forming a film containing nitrogen, metal and silicon by nitriding the film containing metal and silicon; and a third step of forming a metal nitride silicate film by oxidizing the film containing nitrogen, metal and silicon.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: April 3, 2012
    Assignees: Canon Kabushiki Kaisha, Canon Anelva Corporation
    Inventors: Yusuke Fukuchi, Naomu Kitano
  • Patent number: 8119538
    Abstract: A method of making a semiconductor structure is provided. The method includes forming a dielectric layer using a high density plasma oxidation process. The dielectric layer is on a storage layer and the thickness of the storage layer is reduced during the high density plasma oxidation process.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: February 21, 2012
    Assignee: Cypress Semiconductor Corporation
    Inventors: Jeong Soo Byun, Krishnaswamy Ramkumar
  • Patent number: 8105958
    Abstract: A selective oxidation process is performed on a gate electrode in a plasma processing apparatus 100. A wafer W with the gate electrode formed thereon is placed on a susceptor 2 within a chamber 1. Ar gas, H2 gas, and O2 gas are supplied from an Ar gas supply source 17, an H2 gas supply source 18, and an O2 gas supply source 19 in a gas supply system 16 through a gas feed member 15 into the chamber 1. At this time, a flow rate ratio H2/O2 of H2 gas relative to O2 gas is set to be 1.5 or more and 20 or less, preferably to be 4 or more, and more preferably to be 8 or more. Further, the pressure inside the chamber is set to be 3 to 700 Pa, such as 6.7 Pa (50 mTorr).
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: January 31, 2012
    Assignee: Tokyo Electron Limited
    Inventors: Yoshiro Kabe, Masaru Sasaki
  • Patent number: 8048782
    Abstract: Apparatus and method for plasma deposition of thin film photovoltaic materials at microwave frequencies. The apparatus avoids deposition on windows or other microwave transmission elements that couple microwave energy to deposition species. The apparatus includes a microwave applicator with conduits passing therethrough that carry deposition species. The applicator transfers microwave energy to the deposition species to transform them to a reactive state conducive to formation of a thin film material. The conduits physically isolate deposition species that would react to form a thin film material at the point of microwave power transfer. The deposition species are separately energized and swept away from the point of power transfer to prevent thin film deposition. The invention allows for the ultrafast formation of silicon-containing amorphous semiconductors that exhibit high mobility, low porosity, little or no Staebler-Wronski degradation, and low defect concentration.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: November 1, 2011
    Assignee: Ovshinsky Innovation LLC
    Inventors: Stanford R. Ovshinsky, David Strand, Patrick Klersy, Boil Pashmakov
  • Patent number: 8043979
    Abstract: A plasma oxidizing method in which a plasma is produced in a processing chamber of a plasma processing apparatus under a processing condition that the proportion of oxygen in the processing gas is 20% or more and the processing pressure is 400 to 1333 Pa, and silicon exposed from the surface of an object to be processed is oxidized by the plasma to form a silicon oxide film.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: October 25, 2011
    Assignee: Tokyo Electron Limited
    Inventors: Takashi Kobayashi, Junichi Kitagawa, Yoshiro Kabe, Toshihiko Shiozawa
  • Patent number: 8021969
    Abstract: A method for fabricating a semiconductor device includes forming a stacked layer including a tungsten layer, forming a hard mask pattern over the stacked layer, and oxidizing a surface of the hard mask pattern to form a stress buffer layer. A portion of the stacked layer uncovered by the hard mask pattern is removed using the hard mask pattern and the stress buffer layer as an etch mask, thereby forming a first resultant structure. A capping layer is formed over the first resultant structure, the capping layer is etched to retain the capping layer on sidewalls of the first resultant structure, and the remaining portion of the stacked layer uncovered by the hard mask pattern is removed.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: September 20, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventors: Min-Gyu Sung, Heung-Jae Cho, Kwan-Yong Lim
  • Patent number: 7989364
    Abstract: A plasma oxidation process is performed to form a silicon oxide film on the surface of a target object by use of plasma with an O(1D2) radical density of 1×1012 [cm?3] or more generated from a process gas containing oxygen inside a process chamber of a plasma processing apparatus. During the plasma oxidation process, the O(1D2) radical density in the plasma is measured by a VUV monochromator 63, and a correction is made to the plasma process conditions.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: August 2, 2011
    Assignees: National University Corporation Nagoya University, Tokyo Electron Limited
    Inventors: Masaru Hori, Toshihiko Shiozawa, Yoshiro Kabe, Junichi Kitagawa
  • Patent number: 7972973
    Abstract: The present invention provides a method for forming a silicon oxide film, with a substantially uniform film thickness and without being so influenced by dense sites and scattered sites in a pattern provided on an object to be processed, while keeping advantageous points of a plasma oxidation process performed under a lower-pressure and lower-oxygen-concentration condition. In this method, plasma of a processing gas is applied to a surface of the object having a concavo-convex pattern, in a processing chamber of a plasma processing apparatus, so as to oxidize silicon on the surface of the object, thereby forming the silicon oxide film. The plasma is generated under the condition that a ratio of oxygen in the processing gas is within a range of 0.1% to 10% and pressure is within a range of 0.133 Pa to 133.3 Pa.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: July 5, 2011
    Assignee: Tokyo Electron Limited
    Inventors: Takashi Kobayashi, Toshihiko Shinozawa, Yoshiro Abe, Junichi Kitagawa
  • Patent number: 7928018
    Abstract: The application of oxynitriding treatment to electronic appliances involve the problem that N2 ions are formed to thereby damage any oxynitride film. It is intended to provide a method of plasma treatment capable of realizing high-quality oxynitriding and to provide a process for producing an electronic appliance in which use is made of the method of plasma treatment. There is provided a method of plasma treatment, comprising generating plasma with a gas for plasma excitation and introducing a treating gas in the plasma to thereby treat a treatment subject, wherein the treating gas contains nitrous oxide gas, this nitrous oxide gas introduced in a plasma of <2.24 eV electron temperature, so that the generation of ions tending to damage any insulating film is reduced to thereby realize high-quality oxynitriding. Further, there is provided a process for producing an electronic appliance in which use is made of the method of plasma treatment.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: April 19, 2011
    Assignee: Foundation for Advancement of International Science
    Inventors: Tadahiro Ohmi, Akinobu Teramoto, Hiroshi Yamauchi, Yukio Hayakawa
  • Patent number: 7910495
    Abstract: A plasma oxidizing method includes a step of placing an object to be processed and having a surface containing silicon on a susceptor disposed in a processing vessel of a plasma processing apparatus, a step of producing a plasma from a processing gas containing oxygen in the processing vessel, a step of supplying high-frequency electric power to the susceptor and applying a high-frequency bias to the object to be processed when the plasma is produced, and a step of forming a silicon oxide film by oxidizing silicon in the surface of the object to be processed by the plasma.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: March 22, 2011
    Assignee: Tokyo Electron Limited
    Inventors: Toshihiko Shiozawa, Yoshiro Kabe, Takashi Kobayashi, Hikaru Adachi, Junichi Kitagawa, Nobuhiko Yamamoto
  • Patent number: 7906440
    Abstract: A semiconductor device manufacturing method includes forming a gate insulating film on a semiconductor substrate; forming, on the gate insulating film, a multilayered structure including at least a polysilicon layer and a metal layer containing a refractory metal; forming a gate electrode by etching the multilayered structure; and performing a plasma process by a plasma processing apparatus, which is configured to supply microwaves into a process chamber from a planar antenna including a plurality of slots and thereby to generate plasma, at a process pressure of 133.3 to 1,333 Pa and a process temperature of 250 to 800° C. by using a process gas containing at least hydrogen gas and oxygen gas, thereby selectively oxidizing the polysilicon layer in the gate electrode.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: March 15, 2011
    Assignee: Tokyo Electron Limited
    Inventor: Masaru Sasaki
  • Patent number: 7888217
    Abstract: A method for fabricating a gate dielectric of a field effect transistor is disclosed herein. In one embodiment, the method includes the steps of removing a native oxide layer, forming an oxide layer, forming a gate dielectric layer over the oxide layer, oxidizing the gate dielectric layer, and annealing the layers and underlying thermal oxide/silicon interface. Optionally, the oxide layer may be nitridized prior to forming the gate dielectric layer. Optionally, the gate dielectric layer may be nitridized prior to oxidizing the gate dielectric layer. In one embodiment, at least portions of the method are performed using processing reactors arranged on a cluster tool.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: February 15, 2011
    Assignee: Applied Materials, Inc.
    Inventors: Thai Cheng Chua, Cory Czarnik, Christopher Sean Olsen, Khaled Z. Ahmed, Philip Allan Kraus
  • Patent number: 7855153
    Abstract: A method for manufacturing an insulating film, which is used as an insulating film used for a semiconductor integrated circuit, whose reliability can be ensured even though it has small thickness, is provided. In particular, a method for manufacturing a high-quality insulating film over a substrate having an insulating surface, which can be enlarged, at low substrate temperature, is provided. A monosilane gas (SiH4), nitrous oxide (N2O), and a rare gas are introduced into a chamber to generate high-density plasma at a pressure higher than or equal to 10 Pa and lower than or equal to 30 Pa so that an insulating film is formed over a substrate having an insulating surface. After that, the supply of a monosilane gas is stopped, and nitrous oxide (N2O) and a rare gas are introduced without exposure to the air to perform plasma treatment on a surface of the insulating film.
    Type: Grant
    Filed: February 3, 2009
    Date of Patent: December 21, 2010
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Mitsuhiro Ichijo, Kenichi Okazaki, Tetsuhiro Tanaka, Takashi Ohtsuki, Seiji Yasumoto, Shunpei Yamazaki
  • Publication number: 20100136797
    Abstract: A silicon oxide film is formed in a processing chamber of a plasma processing apparatus by performing oxidation process, by using plasma to a processing object having a patterned irregularity, wherein the plasma is generated while high-frequency power is supplied to a mount table under the conditions that the oxygen content in a process gas is not less than 0.5% and less than 10% and the process pressure is 1.3 to 665 Pa.
    Type: Application
    Filed: March 28, 2008
    Publication date: June 3, 2010
    Inventors: Yoshiro Kabe, Takashi Kobayashi, Toshihiko Shiozawa, Junichi Kitagawa
  • Patent number: 7718547
    Abstract: A manufacturing method of a semiconductor device of the present invention includes the steps of forming a first insulating film over a substrate, forming a semiconductor film over the first insulating film, oxidizing or nitriding the semiconductor film by conducting a plasma treatment to the semiconductor film under a condition of an electron density of 1×1011 cm?3 or more and 1×1013 cm?3 or less and an electron temperature of 0.5 eV or more and 1.5 eV or less, using a high frequency wave, forming a second insulating film to cover the semiconductor film, forming a gate electrode over the second insulating film, forming a third insulating film to cover the gate electrode, and forming a conductive film over the third insulating film.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: May 18, 2010
    Assignee: Semiconductor Energy Laboratory Co., Ltd
    Inventors: Atsuo Isobe, Satoshi Murakami, Tamae Takano, Shunpei Yamazaki
  • Publication number: 20100105216
    Abstract: A plasma oxidizing method in which a plasma is produced in a processing chamber of a plasma processing apparatus under a processing condition that the proportion of oxygen in the processing gas is 20% or more and the processing pressure is 400 to 1333 Pa, and silicon exposed from the surface of an object to be processed is oxidized by the plasma to form a silicon oxide film.
    Type: Application
    Filed: September 27, 2007
    Publication date: April 29, 2010
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Takashi Kobayashi, Junichi Kitagawa, Yoshiro Kabe, Toshihiko Shiozawa
  • Publication number: 20100093185
    Abstract: The present invention provides a method for forming a silicon oxide film, with a substantially uniform film thickness and without being so influenced by dense sites and scattered sites in a pattern provided on an object to be processed, while keeping advantageous points of a plasma oxidation process performed under a lower-pressure and lower-oxygen-concentration condition. In this method, plasma of a processing gas is applied to a surface of the object having a concavo-convex pattern, in a processing chamber of a plasma processing apparatus, so as to oxidize silicon on the surface of the object, thereby forming the silicon oxide film. The plasma is generated under the condition that a ratio of oxygen in the processing gas is within a range of 0.1% to 10% and pressure is within a range of 0.133 Pa to 133.3 Pa.
    Type: Application
    Filed: September 28, 2007
    Publication date: April 15, 2010
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yoshiro Kabe, Takashi Kobayashi, Toshihiko Shiozawa, Junichi Kitagawa
  • Publication number: 20100093186
    Abstract: The present invention provides a method for forming a silicon oxide film, with a substantially uniform film thickness and without being so influenced by dense sites and scattered sites in a pattern provided on an object to be processed, while keeping advantageous points of a plasma oxidation process performed under a lower-pressure and lower-oxygen-concentration condition. In this method, plasma of a processing gas is applied to a surface of the object having a concavo-convex pattern, in a processing chamber of a plasma processing apparatus, so as to oxidize silicon on the surface of the object, thereby forming the silicon oxide film. The plasma is generated under the condition that a ratio of oxygen in the processing gas is within a range of 0.1% to 10% and pressure is within a range of 0.133 Pa to 133.3 Pa.
    Type: Application
    Filed: September 28, 2007
    Publication date: April 15, 2010
    Applicant: Tokyo Electron Limited
    Inventors: Takashi Kobayashi, Toshihiko Shinozawa, Yoshiro Abe, Junichi Kitagawa
  • Patent number: 7691725
    Abstract: An insulating film is formed as a pore-wall protective film (103) on pore walls in a porous layer (102) by the use of a mixed gas plasma of a noble gas and an insulating film forming gas generated by microwave excitation. As a result, the pore-wall protective film can have film properties as a protective film.
    Type: Grant
    Filed: February 2, 2004
    Date of Patent: April 6, 2010
    Inventors: Tadahiro Ohmi, Akinobu Teramoto
  • Publication number: 20100029093
    Abstract: A silicon oxide film forming method includes a step of placing an object to be processed and having a surface having a projecting/recessed pattern and containing silicon in a processing vessel of a plasma processing apparatus, a step of producing a plasma from a processing gas containing oxygen at a proportion of 5 to 20% under a processing pressure of 267 to 400 Pa in the processing vessel, and a step of forming a silicon oxide film by oxidizing silicon in the surface of the object to be processed by the plasma.
    Type: Application
    Filed: September 27, 2007
    Publication date: February 4, 2010
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Toshihiko Shiozawa, Yoshiro Kabe, Takashi Kobayashi, Junichi Kitagawa, Kazuhiro Isa
  • Publication number: 20100015815
    Abstract: A plasma oxidizing method includes a step of placing an object to be processed and having a surface containing silicon on a susceptor disposed in a processing vessel of a plasma processing apparatus, a step of producing a plasma from a processing gas containing oxygen in the processing vessel, a step of supplying high-frequency electric power to the susceptor and applying a high-frequency bias to the object to be processed when the plasma is produced, and a step of forming a silicon oxide film by oxidizing silicon in the surface of the object to be processed by the plasma.
    Type: Application
    Filed: September 27, 2007
    Publication date: January 21, 2010
    Applicant: Tokyo Electron Limited
    Inventors: Toshihiko Shiozawa, Yoshiro Kabe, Takashi Kobayashi, Hikaru Adachi, Junichi Kitagawa, Nobuhiko Yamamoto
  • Patent number: 7622396
    Abstract: A semiconductor device is produced by providing a reaction chamber with a substrate and sequentially repeating steps of: supplying a first kind of gas into the reaction chamber, exhausting the first kind of gas from the reaction chamber, supplying a second kind of gas into the reaction chamber, and exhausting the second kind of gas from the reaction chamber to process the substrate disposed in the reaction chamber. The first kind of gas is pre-reserved in an intermediate portion of a supply path through which the first kind of gas flows, and is supplied into the reaction chamber with exhaust of the reaction chamber being substantially stopped.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: November 24, 2009
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Kazuyuki Okuda, Yasushi Yagi, Toru Kagaya, Masanori Sakai
  • Publication number: 20090263919
    Abstract: A plasma oxidation process is performed to form a silicon oxide film on the surface of a target object by use of plasma with an O(1D2) radical density of 1×1012 [cm?3] or more generated from a process gas containing oxygen inside a process chamber of a plasma processing apparatus. During the plasma oxidation process, the O(1D2) radical density in the plasma is measured by a VUV monochromator 63, and a correction is made to the plasma process conditions.
    Type: Application
    Filed: August 27, 2007
    Publication date: October 22, 2009
    Applicants: National University Corporation Nagoya University, Tokyo Electron Limited
    Inventors: Masaru Hori, Toshihiko Shiozawa, Yoshiro Kabe, Junichi Kitagawa
  • Publication number: 20090239364
    Abstract: Disclosed is a method for forming a gate insulating film comprising an oxidation step wherein a silicon oxide film is formed by having an oxygen-containing plasma act on silicon in the surface of an object to be processed in a processing chamber of a plasma processing apparatus. The processing temperature in the oxidation step is more than 600° C. and not more than 1000° C., and the oxygen-containing plasma is formed by introducing an oxygen-containing processing gas containing at least a rare gas and an oxygen gas into the process chamber while introducing a high frequency wave or microwave into the process chamber through an antenna.
    Type: Application
    Filed: March 28, 2006
    Publication date: September 24, 2009
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Tatsuo Nishita, Toshio Nakanishi, Shuuichi Ishizuka, Tomoe Nakayama, Yutaka Fujino
  • Publication number: 20090233453
    Abstract: Methods of fabricating an oxide layer on a semiconductor substrate are provided herein. The oxide layer may be formed over an entire structure disposed on the substrate, or selectively formed on a non-metal containing layer with little or no oxidation of an exposed metal-containing layer. The methods disclosed herein may be performed in a variety of process chambers, including but not limited to decoupled plasma oxidation chambers, rapid and/or remote plasma oxidation chambers, and/or plasma immersion ion implantation chambers. In some embodiments, a method may include providing a substrate comprising a metal-containing layer and non-metal containing layer; and forming an oxide layer on an exposed surface of the non-metal containing layer by exposing the substrate to a plasma formed from a process gas comprising a hydrogen-containing gas, an oxygen-containing gas, and at least one of a supplemental oxygen-containing gas or a nitrogen-containing gas.
    Type: Application
    Filed: March 11, 2009
    Publication date: September 17, 2009
    Applicant: APPLIED MATERIALS, INC.
    Inventors: RAJESH MANI, NORMAN TAM, TIMOTHY W. WEIDMAN, YOSHITAKA YOKOTA
  • Patent number: 7521354
    Abstract: A low k interlevel dielectric layer fabrication method includes providing a substrate having integrated circuitry at least partially formed thereon. An oxide comprising interlevel dielectric layer comprising carbon and having a dielectric constant no greater than 3.5 is formed over the substrate. After forming the carbon comprising dielectric layer, it is exposed to a plasma comprising oxygen effective to reduce the dielectric constant to below what it was prior to said exposing. A low k interlevel dielectric layer fabrication method includes providing a substrate having integrated circuitry at least partially formed thereon. In a chamber, an interlevel dielectric layer comprising carbon and having a dielectric constant no greater than 3.5 is plasma enhanced chemical vapor deposited over the substrate at subatmospheric pressure.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: April 21, 2009
    Assignee: Micron Technology, Inc.
    Inventors: Weimin Li, Zhiping Yin, William Budge
  • Patent number: 7517814
    Abstract: A method for preparing an oxynitride film on a substrate comprising forming the oxynitride film by exposing a surface of the substrate to oxygen radicals and nitrogen radicals formed by plasma induced dissociation of a process gas comprising nitrogen and oxygen using plasma based on microwave irradiation via a plane antenna member having a plurality of slits.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: April 14, 2009
    Assignees: Tokyo Electron, Ltd., International Business Machines Corporation
    Inventors: Cory S. Wajda, Kristen Scheer, Toshihara Furakawa
  • Publication number: 20090053903
    Abstract: A plasma processing apparatus 100 of the RLSA type includes a planar antenna with a plurality of slots formed therein, by which microwaves are supplied into a process chamber to generate plasma. In this apparatus, poly-silicon oxidation is performed at a pressure of 67 to 667 Pa inside the chamber, a temperature of 300 to 600° C., and a microwave power of 1,000 to 3,500 W, while a process gas containing Ar gas at a rate of 100 to 2,000 mL/min and O2 gas at a rate of 1 to 500 mL/min is used with O2 gas/Ar gas ratio set to be 0.5 to 5%.
    Type: Application
    Filed: August 30, 2005
    Publication date: February 26, 2009
    Applicant: Tokyo Electron Limited
    Inventors: Takashi Kobayashi, Junichi Kitagawa
  • Patent number: 7465677
    Abstract: A manufacturing method of a semiconductor device of the present invention includes the steps of forming a first insulating film over a substrate, forming a semiconductor film over the first insulating film, oxidizing or nitriding the semiconductor film by conducting a plasma treatment to the semiconductor film under a condition of an electron density of 1×1011 cm?3 or more and 1×1013 cm?3 or less and an electron temperature of 0.5 eV or more and 1.5 eV or less, using a high frequency wave, forming a second insulating film to cover the semiconductor film, forming a gate electrode over the second insulating film, forming a third insulating film to cover the gate electrode, and forming a conductive film over the third insulating film.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: December 16, 2008
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Atsuo Isobe, Satoshi Murakami, Tamae Takano, Shunpei Yamazaki
  • Patent number: 7465674
    Abstract: An object of the present invention is to provide a method for manufacturing a semiconductor device with high reliability, at low cost, in which an element forming layer having a thin film transistor and the like provided over a substrate is peeled from the substrate, so that a semiconductor device is manufactured. According to the invention, a metal film is formed over a substrate, a plasma treatment is performed to the metal film in a dinitrogen monoxide atmosphere to form a metal oxide film over the metal film, a first insulating film is formed continuously without being exposed to the air, an element forming layer is formed over the first insulating film, and the element forming layer is peeled from the substrate, so that a semiconductor device is manufactured.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: December 16, 2008
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Tomoko Tamura, Kaori Ogita, Koji Dairiki, Junya Maruyama
  • Publication number: 20080187747
    Abstract: A dielectric film wherein N in the state of an Si3=?N bonding is present in a concentration of 3 atomic % or more in the surface side of an oxide film and also is present in a concentration of 0.1 atomic % or less in the interface side of the oxide film can achieve the prevention of the B diffusion and also the prevention of the deterioration of the NBTI resistance in combination. When the Ar/N2 radical nitridation is used, it is difficult for the resultant oxide film to satisfy the condition wherein N in the above bonding state is present in a concentration of 3 atomic % or more in the surface side of an oxide film and simultaneously is present in a concentration of 0.1 atomic % or less in the interface side of the oxide film, whereas, the above distribution of the N concentration can be achieved by using any of the gas combinations of Xe/N2, Kr/N2, Ar/NH3, Xe/NH3, Kr/NH3, Ar/N2/H2, Xe/N2/H2 and Kr/N2/H2.
    Type: Application
    Filed: January 20, 2006
    Publication date: August 7, 2008
    Applicant: TOHOKU UNIVERSITY
    Inventors: Tadahiro Ohmi, Akinobu Teramoto, Tetsuya Goto, Kazumasa Kawase