Patents by Inventor Masaru Sasago

Masaru Sasago has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20070111541
    Abstract: In a pattern formation method, a barrier film including a polymer and a cross-linking agent for thermally causing a cross-linking reaction of the polymer is formed on a resist film formed on a substrate. Subsequently, the barrier film is annealed for cross-linking the polymer, and pattern exposure is performed by selectively irradiating the resist film with exposing light through the barrier film with a liquid provided on the barrier film. Then, after removing the barrier film, the resist film is developed after the pattern exposure. Thus, a resist pattern made of the resist film is formed.
    Type: Application
    Filed: October 11, 2006
    Publication date: May 17, 2007
    Inventors: Masayuki Endo, Masaru Sasago
  • Publication number: 20070108593
    Abstract: The present invention provides a zeolite sol which can be formed into a porous film that can be thinned to an intended thickness by a method used in the ordinary semiconductor process, that excels in dielectric properties, adhesion, film consistency and mechanical strength, and that can be easily thinned; a composition for film formation; a porous film and a method for forming the same; and a high-performing and highly reliable semiconductor device which contains this porous film inside. More specifically, the zeolite sol is prepared by hydrolyzing and decomposing a silane compound expressed by a general formula: Si(OR1)4 (wherein R1 represents a straight-chain or branched alkyl group having 1 to 4 carbons, and when there is more than one R1, the R1s can be independent and the same as or different from each other) in a conventional coating solution for forming a porous film in the presence of a structure-directing agent and a basic catalyst; and then by heating the silane compound at a temperature of 75° C.
    Type: Application
    Filed: January 11, 2007
    Publication date: May 17, 2007
    Inventors: Tsutomu Ogihara, Fujio Yagihashi, Hideo Nakagawa, Masaru Sasago
  • Publication number: 20070099117
    Abstract: A base polymer of a resist material includes a unit represented by a general formula of the following Chemical Formula 3: wherein R1, R2 and R3 are the same or different and are a hydrogen atom, a fluorine atom, a straight-chain alkyl group, a branched or cyclic alkyl group or a fluoridated alkyl group with a carbon number not less than 1 and not more than 20; R4 is a straight-chain alkylene group or a branched or cyclic alkylene group with a carbon number not less than 0 and not more than 20; and R5 and R6 are the same or different and are a hydrogen atom, a straight-chain alkyl group, a branched or cyclic alkyl group, a fluoridated alkyl group with a carbon number not less than 1 and not more than 20, or a protecting group released by an acid.
    Type: Application
    Filed: December 20, 2006
    Publication date: May 3, 2007
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shinji Kishimura, Masayuki Endo, Masaru Sasago, Mitsuru Ueda, Hirokazu Imori, Toshiaki Fukuhara
  • Publication number: 20070087124
    Abstract: Provided are a composition for forming porous film which can form a porous film having practical mechanical strength in a simple and low cost process; a porous film and a method for forming the film; and an inexpensive, high-performing and highly reliable semiconductor device comprising the porous film inside. More specifically, provided is a composition for forming porous film, comprising a polymer which is obtainable by hydrolyzing and condensing one or more silane compounds represented by Formula (1), or preferably by hydrolyzing and co-condensing one or more silane compounds represented by Formula (1) and one more silane compounds represented by Formula (2), Formulas (1) and (2) being: (R1)aSi(R2)4-a??(1) (R3)bSi(R4)4-b??(2) Also provided is a method for forming porous film comprising a step of applying said composition on a substrate to form film and a step of transforming the film into porous film.
    Type: Application
    Filed: October 2, 2006
    Publication date: April 19, 2007
    Applicant: Matsushita Electric Industrial Co. Ltd.
    Inventors: Motoaki Iwabuchi, Fujio Yagihashi, Yoshitaka Hamada, Hideo Nakagawa, Masaru Sasago
  • Patent number: 7205338
    Abstract: Provided is a coating liquid for forming a porous film having desirably controlled thickness and having excellent dielectric and mechanical properties, using the conventional semiconductor process. Specifically, provided is a composition for forming a porous film comprising a condensation product and an organic solvent wherein the condensation product is obtained by hydrolysis and condensation, at presence of a basic catalyst, of one or more silane compounds represented by formula (1): R1kSi(OR2)4-k, and one or more crosslinking agents represented by formula (2): {Xj(Y)3-jSi-(L)m-}nMZ4-n. Moreover, a method for manufacturing a porous film comprising steps of applying said composition so as to form a film, drying the film and heating the dried film so as to hardent the film, and others are provided.
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: April 17, 2007
    Assignees: Shin-Etsu Chemical Co., Ltd., Matsushita Electric Industrial Co., Ltd.
    Inventors: Tsutomu Ogihara, Fujio Yagihashi, Hideo Nakagawa, Masaru Sasago
  • Publication number: 20070082292
    Abstract: A water-soluble material used for forming a water-soluble film on a chemically amplified resist film includes a water-soluble polymer, an acid generator and a compound constructing an inclusion compound for incorporating the acid generator. Also, in a pattern formation method, a chemically amplified resist film is formed on a substrate, and a water-soluble film made of a water-soluble material including a water-soluble polymer, an acid generator and a compound constructing an inclusion compound for incorporating the acid generator is formed on the resist film. Thereafter, pattern exposure is carried out by selectively irradiating the resist film with exposing light through the water-soluble film, the resultant resist film is developed and the water-soluble film is removed. Thus, a resist pattern made of the resist film is formed.
    Type: Application
    Filed: November 21, 2006
    Publication date: April 12, 2007
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Masayuki Endo, Masaru Sasago
  • Patent number: 7198888
    Abstract: A water-soluble material used for forming a water-soluble film on a chemically amplified resist film includes a water-soluble polymer, an acid generator and a compound constructing an inclusion compound for incorporating the acid generator. Also, in a pattern formation method, a chemically amplified resist film is formed on a substrate, and a water-soluble film made of a water-soluble material including a water-soluble polymer, an acid generator and a compound constructing an inclusion compound for incorporating the acid generator is formed on the resist film. Thereafter, pattern exposure is carried out by selectively irradiating the resist film with exposing light through the water-soluble film, the resultant resist film is developed and the water-soluble film is removed. Thus, a resist pattern made of the resist film is formed.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: April 3, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masayuki Endo, Masaru Sasago
  • Patent number: 7195860
    Abstract: A semiconductor manufacturing apparatus includes a liquid supplying section for supplying a liquid onto a stage for holding a wafer on which a resist film is formed; an exposing section for irradiating the resist film with exposing light through a mask with the liquid provided on the resist film; and a removing part for removing, from the liquid, a gas included in the liquid. Thus, the liquid from which the gas has been removed is provided on the resist film, and therefore, foams included in the liquid or formed during the exposure can be removed. Accordingly, exposure abnormality such as diffraction abnormality can be prevented, resulting in forming a resist pattern in a good shape.
    Type: Grant
    Filed: November 9, 2004
    Date of Patent: March 27, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masayuki Endo, Masaru Sasago
  • Patent number: 7176103
    Abstract: The present invention provides a zeolite sol which can be formed into a porous film that can be thinned to an intended thickness by a method used in the ordinary semiconductor process, that excels in dielectric properties, adhesion, film consistency and mechanical strength, and that can be easily thinned; a composition for film formation; a porous film and a method for forming the same; and a high-performing and highly reliable semiconductor device which contains this porous film inside. More specifically, the zeolite sol is prepared by hydrolyzing and decomposing a silane compound expressed by a general formula: Si(OR1)4 (wherein R1 represents a straight-chain or branched alkyl group having 1 to 4 carbons, and when there is more than one R1, the R1s can be independent and the same as or different from each other) in a conventional coating solution for forming a porous film in the presence of a structure-directing agent and a basic catalyst; and then by heating the silane compound at a temperature of 75° C.
    Type: Grant
    Filed: November 7, 2003
    Date of Patent: February 13, 2007
    Assignees: Shin-Etsu Chemical Co. Ltd., Matsushita Electric Industrial Co., Ltd.
    Inventors: Tsutomu Ogihara, Fujio Yagihashi, Hideo Nakagawa, Masaru Sasago
  • Publication number: 20070026341
    Abstract: A resist protective coating material is provided comprising an ?-trifluoromethylacrylic acid/norbornene copolymer having cyclic perfluoroalkyl groups as pendant. In a pattern-forming process, the material forms on a resist film a protective coating which is water-insoluble, dissolvable in alkaline developer and immiscible with the resist film, allowing for effective implementation of immersion lithography.
    Type: Application
    Filed: July 26, 2006
    Publication date: February 1, 2007
    Applicants: SHIN-ETSU CHEMICAL CO., LTD., MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., CENTRAL GLASS CO., LTD.
    Inventors: Jun Hatakeyama, Yuji Harada, Yoshio Kawai, Masayuki Endo, Masaru Sasago, Haruhiko Komoriya, Michitaka Ootani, Satoru Miyazawa, Kazuhiko Maeda
  • Patent number: 7169530
    Abstract: The base polymer of a resist material contains a polymer compound including a first unit represented by a general formula of the following Chemical Formula 4 and a second unit represented by a general formula of the following Chemical Formula 5: wherein R1, R2 and R3 are the same or different and are a hydrogen atom, a fluorine atom, or a straight-chain alkyl group, a branched or cyclic alkyl group or a fluoridated alkyl group with a carbon number not less than 1 and not more than 20; R4 is a straight-chain alkylene group or a branched or cyclic alkylene group with a carbon number not less than 0 and not more than 20; R5 and R6 are the same or different and are a hydrogen atom, a straight-chain alkyl group, a branched or cyclic alkyl group or a fluoridated alkyl group with a carbon number not less than 1 and not more than 20, or a protecting group released by an acid; R7 is a methylene group, an oxygen atom, a sulfur atom or —SO2—; R8, R9, R10 and R11 are the same or different and are a hydrogen atom, a f
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: January 30, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shinji Kishimura, Masayuki Endo, Masaru Sasago, Mitsuru Ueda, Hirokazu Imori, Toshiaki Fukuhara
  • Patent number: 7169869
    Abstract: A resist composition comprising a polymer containing vinyl sulfonate units having fluorinated hydrophilic groups as a base resin has excellent transparency, substrate adhesion and developer penetrability as well as plasma etching resistance, and is suited for lithographic microprocessing.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: January 30, 2007
    Assignees: Shin-Etsu Chemical Co., Ltd., Matsushita Electric Industrial Co., Ltd., Central Glass Co., Ltd.
    Inventors: Yuji Harada, Jun Hatakeyama, Yoshio Kawai, Masaru Sasago, Masayuki Endo, Shinji Kishimura, Kazuhiko Maeda, Michitaka Ootani, Haruhiko Komoriya
  • Patent number: 7166418
    Abstract: A base polymer of a resist material includes a unit represented by a general formula of the following Chemical Formula 3: wherein R1, R2 and R3 are the same or different and are a hydrogen atom, a fluorine atom, a straight-chain alkyl group, a branched or cyclic alkyl group or a fluoridated alkyl group with a carbon number not less than 1 and not more than 20; R4 is a straight-chain alkylene group or a branched or cyclic alkylene group with a carbon number not less than 0 and not more than 20; and R5 and R6 are the same or different and are a hydrogen atom, a straight-chain alkyl group, a branched or cyclic alkyl group, a fluoridated alkyl group with a carbon number not less than 1 and not more than 20, or a protecting group released by an acid.
    Type: Grant
    Filed: September 2, 2004
    Date of Patent: January 23, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shinji Kishimura, Masayuki Endo, Masaru Sasago, Mitsuru Ueda, Hirokazu Imori, Toshiaki Fukuhara
  • Publication number: 20070009841
    Abstract: The semiconductor fabrication apparatus of this invention includes an exposure section provided within a chamber for exposing a design pattern on a resist film applied on a wafer, and a liquid recycle section for supplying, onto the wafer, a liquid for use in immersion lithography for increasing the numerical aperture of exposing light during exposure while recycling the liquid. The liquid recycle section includes a liquid supply part for supplying the liquid onto the resist film of the wafer, a liquid discharge part for discharging and recovering the liquid from above the wafer, and an impurity removal part for containing the liquid and removing an impurity included in the liquid.
    Type: Application
    Filed: September 15, 2006
    Publication date: January 11, 2007
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masayuki Endo, Masaru Sasago
  • Publication number: 20060289849
    Abstract: The invention includes a semiconductor device. Specifically provided is a semiconductor device comprising a porous film therein, the porous film being formable by a composition comprising a surfactant, an aprotic polar solvent and a solution comprising a polymer formed by hydrolysis and condensation of one or more silane compounds represented by foramula (1) : RnSi(OR?)4-n. Also provided is a method for manufacturing a porous film comprising steps of applying said composition so as to form a film, drying the film and transforming the dried film to a porous film by removing said surfactant. The porous film obtained from the composition for forming porous film is further provided.
    Type: Application
    Filed: August 29, 2006
    Publication date: December 28, 2006
    Inventors: Fujio Yagihashi, Yoshitaka Hamada, Hideo Nakagawa, Masaru Sasago
  • Publication number: 20060281025
    Abstract: In a pattern formation method, a resist film made of a chemically amplified resist material including a first polymer having hemiacetal or hemiketal is formed on a substrate. Then, with a liquid provided on the resist film, pattern exposure is performed by selectively irradiating the resist film with exposing light. After the pattern exposure, the resist film is developed so as to form a resist pattern made of the resist film.
    Type: Application
    Filed: April 24, 2006
    Publication date: December 14, 2006
    Inventors: Masayuki Endo, Masaru Sasago
  • Publication number: 20060275707
    Abstract: In a pattern formation method, a resist film is formed on a substrate, an alkali-soluble first barrier film is formed on the resist film and an alkali-insoluble second barrier film is formed on the first barrier film. Subsequently, with a liquid provided on the second barrier film, pattern exposure is performed by selectively irradiating the resist film with exposing light through the second barrier film and the first barrier film. Then, after removing the second barrier film, the resist film having been subjected to the pattern exposure is developed, so as to remove the first barrier film and form a resist pattern made of the resist film.
    Type: Application
    Filed: May 10, 2006
    Publication date: December 7, 2006
    Inventors: Masayuki Endo, Masaru Sasago
  • Publication number: 20060269871
    Abstract: A polymer comprising recurring units of formula (1) wherein R1 is F or fluoroalkyl, R2 is alkylene or fluoroalkylene, and R3 is an acid labile group and having a Mw of 1,000-500,000 is used to formulate a resist composition, which is processed by the lithography involving ArF exposure and offers many advantages including resolution, minimal line edge roughness, etch resistance, and minimal surface roughness after etching. The composition performs well when processed by the ArF immersion lithography with liquid interposed between the projection lens and the wafer.
    Type: Application
    Filed: May 25, 2006
    Publication date: November 30, 2006
    Inventors: Yuji Harada, Jun Hatakeyama, Yoshio Kawai, Masaru Sasago, Masayuki Endo, Kazuhiko Maeda, Haruhiko Komoriya, Michitaka Ootani
  • Publication number: 20060263719
    Abstract: A resist film made of a resist material including 4-pentanelactam, that is, hetero cyclic ketone, is formed on a substrate, and subsequently, pattern exposure is performed by irradiating the resist film with exposing light through a mask. Then, the resist film having been subjected to the pattern exposure is developed, thereby forming a resist pattern.
    Type: Application
    Filed: May 2, 2006
    Publication date: November 23, 2006
    Inventors: Masayuki Endo, Masaru Sasago
  • Patent number: 7135273
    Abstract: After forming a resist film of a chemically amplified resist material, pattern exposure is carried out by selectively irradiating the resist film with exposing light while supplying, onto the resist film, a solution including a basic compound. After the pattern exposure, the resist film is subjected to post-exposure bake and is then developed with an alkaline developer. Thus, a resist pattern made of an unexposed portion of the resist film can be formed in a good shape.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: November 14, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masayuki Endo, Masaru Sasago