Patents by Inventor Masaki Koyama
Masaki Koyama 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).
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Patent number: 7359412Abstract: It is an object to provide a laser apparatus, a laser irradiating method and a manufacturing method of a semiconductor device that make laser energy more stable. To attain the object, a part of laser beam emitted from an oscillator is sampled to generate an electric signal that contains as data energy fluctuation of a laser beam. The electric signal is subjected to signal processing to calculate the frequency, amplitude, and phase of the energy fluctuation of the laser beam.Type: GrantFiled: September 10, 2003Date of Patent: April 15, 2008Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hidekazu Miyairi, Akihisa Shimomura, Tamae Takano, Masaki Koyama, Koichiro Tanaka
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Publication number: 20070195837Abstract: It is an object to provide a laser apparatus, a laser irradiating method and a manufacturing method of a semiconductor device that can perform uniform a process with a laser beam to an object uniformly. The present invention provides a laser apparatus comprising an optical system for sampling a part of a laser beam emitted from an oscillator, a sensor for generating an electric signal including fluctuation in energy of the laser beam as a data from the part of the laser beam, a means for performing signal processing to the electrical signal to grasp a state of the fluctuation in energy of the laser beam, and controlling a relative speed of an beam spot of the laser beam to an object in order to change in phase with the fluctuation in energy of the laser beam.Type: ApplicationFiled: April 5, 2007Publication date: August 23, 2007Inventors: Hidekazu Miyairi, Akihisa Shimomura, Tamae Takano, Masaki Koyama
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Patent number: 7247527Abstract: It is an object of the present invention to provide a method for manufacturing a crystalline semiconductor film comprising the steps of crystallizing with the use of the metal element for promoting the crystallization to control the orientation and irradiating the laser once to form a crystalline semiconductor film having a small crystal grain arranged in a grid pattern at a regular interval. In the present invention made in view of the above object, a ridge forms a grid pattern on a surface of the crystalline semiconductor film in such a way that a crystalline semiconductor film is formed by adding the metal element for promoting the crystallization to the amorphous semiconductor film and the pulsed laser whose polarization direction is controlled is irradiated thereto. As the means for controlling the polarization direction, a half-wave plate or a mirror is used.Type: GrantFiled: July 28, 2004Date of Patent: July 24, 2007Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Akihisa Shimomura, Masaki Koyama, Hironobu Shoji
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Patent number: 7223306Abstract: It is an object to provide a laser apparatus, a laser irradiating method and a manufacturing method of a semiconductor device that can perform uniform a process with a laser beam to an object uniformly. The present invention provides a laser apparatus comprising an optical system for sampling a part of a laser beam emitted from an oscillator, a sensor for generating an electric signal including fluctuation in energy of the laser beam as a data from the part of the laser beam, a means for performing signal processing to the electrical signal to grasp a state of the fluctuation in energy of the laser beam, and controlling a relative speed of an beam spot of the laser beam to an object in order to change in phase with the fluctuation in energy of the laser beam.Type: GrantFiled: September 17, 2003Date of Patent: May 29, 2007Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hidekazu Miyairi, Akihisa Shimomura, Tamae Takano, Masaki Koyama
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Patent number: 6864780Abstract: A data transmission system using a human body as a signal transmission path includes a transmitter and a receiver. The transmitter uses a pair of electrodes which are held in close proximity to the skin of the human body. The transmitter transmits data to the receiver through the signal transmission path partly extending through the human body when a user carrying the transmitter touches a touch electrode of the receiver. The electrodes are integrated into a garment worn by the user in such a manner that the electrodes are kept in a closely facing relation to the skin of the user, thereby establishing the electrical path extending through the human body. With the integration of the two electrodes into the garment, the user wearing the garment as an everyday clothes or uniform can be easy and convenient to carry the transmitter for successful transmission of the data.Type: GrantFiled: September 10, 2001Date of Patent: March 8, 2005Assignee: Matsushita Electric Works, Ltd.Inventors: Kenji Doi, Masaru Hashimoto, Masaki Koyama, Yoshiko Suzuki, Tokuhisa Nishimura
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Publication number: 20050023531Abstract: It is an object of the present invention to provide a crystallizing method that can control the orientation with the use of the metal element for promoting the crystallization, wherein the pulsed laser is irradiated once to the crystalline semiconductor film with the orientation aligned to form a crystalline semiconductor film having small crystal grains formed in a grid pattern at regular intervals in which the orientation is aligned in adjacent crystal grains. It is also an object of the present invention to provide a method for manufacturing the crystalline semiconductor film. In view of the above object, the present invention provides a crystalline semiconductor film having the crystal grains formed in a grid pattern in which the orientation is aligned in adjacent crystal grains and also provides a thin film transistor having the crystalline semiconductor film.Type: ApplicationFiled: July 9, 2004Publication date: February 3, 2005Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hironobu Shoji, Akihisa Shimomura, Masaki Koyama
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Publication number: 20050026401Abstract: It is an object of the present invention to provide a method for manufacturing a crystalline semiconductor film comprising the steps of crystallizing with the use of the metal element for promoting the crystallization to control the orientation and irradiating the laser once to form a crystalline semiconductor film having a small crystal grain arranged in a grid pattern at a regular interval. In the present invention made in view of the above object, a ridge forms a grid pattern on a surface of the crystalline semiconductor film in such a way that a crystalline semiconductor film is formed by adding the metal element for promoting the crystallization to the amorphous semiconductor film and the pulsed laser whose polarization direction is controlled is irradiated thereto. As the means for controlling the polarization direction, a half-wave plate or a mirror is used.Type: ApplicationFiled: July 28, 2004Publication date: February 3, 2005Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Akihisa Shimomura, Masaki Koyama, Hironobu Shoji
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Publication number: 20050017841Abstract: A data transmission system using a human body as a signal transmission path includes a transmitter and a receiver. The transmitter uses a pair of electrodes which are held in close proximity to the skin of the human body. The transmitter transmits data to the receiver through the signal transmission path partly extending through the human body when a user carrying the transmitter touches a touch electrode of the receiver. The electrodes are integrated into a garment worn by the user in such a manner that the electrodes are kept in a closely facing relation to the skin of the user, thereby establishing the electrical path extending through the human body. With the integration of the two electrodes into the garment, the user wearing the garment as an everyday clothes or uniform can be easy and convenient to carry the transmitter for successful transmission of the data.Type: ApplicationFiled: August 19, 2004Publication date: January 27, 2005Applicant: MATSUSHITA ELECTRIC WORKS, LTD.Inventors: Kenji Doi, Masaru Hashimoto, Masaki Koyama, Yoshiko Suzuki, Tokuhisa Nishimura
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Publication number: 20040203248Abstract: It is an object to provide a laser apparatus, a laser irradiating method and a manufacturing method of a semiconductor device that can perform uniform a process with a laser beam to an object uniformly. The present invention provides a laser apparatus comprising an optical system for sampling a part of a laser beam emitted from an oscillator, a sensor for generating an electric signal including fluctuation in energy of the laser beam as a data from the part of the laser beam, a means for performing signal processing to the electrical signal to grasp a state of the fluctuation in energy of the laser beam, and controlling a relative speed of an beam spot of the laser beam to an object in order to change in phase with the fluctuation in energy of the laser beam.Type: ApplicationFiled: September 17, 2003Publication date: October 14, 2004Applicant: Semiconductor Energy Laboratory Co., LtdInventors: Hidekazu Miyairi, Akihisa Shimomura, Tamae Takano, Masaki Koyama
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Publication number: 20040189883Abstract: The present invention is to reduce display unevenness in a display device caused by dispersion of energy density of a laser beam. It is difficult for a periodical pattern to be recognized as display unevenness in display image. The display device of the present invention can visually reduce the display unevenness in the display image by utilizing the visual advantage described above. The display device can be manufactured using a TFT array substrate in which electric characteristic of plural TFTs arranged in a line in the minor axis direction of an linear shaped laser beam periodically fluctuates depending on the place in which each TFT is formed.Type: ApplicationFiled: December 24, 2003Publication date: September 30, 2004Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.Inventor: Masaki Koyama
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Patent number: 6771161Abstract: Touch-responsive data transmission system for elongating transceiver battery life and assuring one-touch data transmission includes a first transceiver worn on user and a second transceiver connected to equipment utilizing first transceiver data. User contacts first transceiver signal and ground electrodes and touches a second transceiver touch electrode to establish a signal path through user. First transceiver includes a detector for detecting a start signal from the second transceiver signal electrode. Second transceiver includes a generator for generating the start signal upon touching the touch electrode. Receiving the start signal, circuit elements responsible for data transmission are battery-energized to start data transmission from first to second transceivers. Circuit elements responsible for transmitting data remain deenergized until user touches the second transceiver touch electrode to save energy during non-operation and prolong first transceiver battery life.Type: GrantFiled: June 29, 2000Date of Patent: August 3, 2004Assignee: Matsushita Electric Works, Ltd.Inventors: Kenji Doi, Mitsuhide Maeda, Hitoshi Sakakibara, Masaru Hashimoto, Keiichi Yoshida, Masaki Koyama, Osamu Nishimura, Yoshiko Suzuki
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Publication number: 20040052279Abstract: It is an object to provide a laser apparatus, a laser irradiating method and a manufacturing method of a semiconductor device that make laser energy more stable. To attain the object, a part of laser beam emitted from an oscillator is sampled to generate an electric signal that contains as data energy fluctuation of a laser beam. The electric signal is subjected to signal processing to calculate the frequency, amplitude, and phase of the energy fluctuation of the laser beam.Type: ApplicationFiled: September 10, 2003Publication date: March 18, 2004Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hidekazu Miyairi, Akihisa Shimomura, Tamae Takano, Masaki Koyama, Koichiro Tanaka
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Patent number: 6637550Abstract: A displacement type fluid machine has a first lubricating fluid pump, provided at the rotating shaft and immersed in the lubricating fluid stored in the lubricating fluid-storing chamber, for feeding lubricating fluid to a first one of the two sliding portions via a lubricating fluid-guiding path formed at the rotating shaft; a second lubricating fluid pump, provided at the rotating shaft, for raising the pressure of lubricating fluid which has been fed via the lubricating fluid-guiding path by a predetermined pump head, and for feeding that lubricating fluid to a second one of the two sliding portions; and a third lubricating fluid pump, which is provided at or near the rotating shaft, for raising the pressure of lubricating fluid which has been fed via the lubricating fluid-guiding path by a predetermined pump head, and for feeding that lubricating fluid to a third one of the two sliding portions.Type: GrantFiled: May 16, 2001Date of Patent: October 28, 2003Assignee: Hitachi, Ltd.Inventors: Masaki Koyama, Isamu Tsubono, Isao Hayase, Yuugo Mukai, Koichi Sekiguchi, Kenichi Oshima
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Patent number: 6525670Abstract: A communication system includes a transmitting device, a receiving device having receiving device for receiving data transmitted by said transmitting device and managing device for managing received data, detecting device for detecting whether or not communication of data between said transmitting device and said receiving device is permitted, said detecting device being provided with at least one of said transmitting device and said receiving device, wherein when said detecting device detects a fact that communication of data is permitted, said transmitting device starts transmitting data to said receiving device.Type: GrantFiled: May 25, 1999Date of Patent: February 25, 2003Assignee: Matsushita Electric Works, Ltd.Inventors: Kenji Doi, Mitsuhide Maeda, Hitoshi Sakakibara, Masaru Hashimoto, Keiichi Yoshida, Kazuya Kitayama, Masaki Koyama, Osamu Nishimura, Yoshiko Suzuki
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Patent number: 6494696Abstract: A scroll compressor comprising: a vessel; a compressing mechanism provided within said vessel, the compressing mechanism comprising an orbiting scroll and a non-orbiting scroll each having a spiral wrap formed in a base plate and an Oldham ring for preventing the orbiting scroll from rotating around its axis; an oil reservoir provided within a vessel; a crankshaft for transmitting a power for compressing a working fluid; and a frame on which a main bearing for supporting the crankshaft is provided, wherein the crankshaft is provided with oil supply passages for communicating a vicinity of an orbiting bearing and a vicinity of the main bearing, and openings of the oil supply passages in the vicinity of the orbiting bearing and in the vicinity of the main bearing are positioned so that a pressure of an oil film in the orbiting bearing opening generated during an operation of the compressor is higher than a pressure of an oil film in the-main bearing opening generated during an operation of the compressor.Type: GrantFiled: May 14, 2001Date of Patent: December 17, 2002Assignee: Hitachi, Ltd.Inventors: Toshiyuki Terai, Isao Hayase, Masahiro Takebayashi, Isamu Tsubono, Masaki Koyama, Koichi Sekiguchi
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Publication number: 20020033305Abstract: A displacement type fluid machine is composed of: a first lubricating fluid pump for feeding lubricating-oil which is provided at the rotating shaft, and is immersed in the lubricating fluid stored in the lubricating fluid-storing chamber, for feeding lubricating fluid to a first one of the two sliding portions via a lubricating fluid-guiding path formed at the rotating shaft; a second lubricating fluid pump which is provided at the rotating shaft, for raising the pressure of lubricating fluid which has been fed via the lubricating fluid-guiding path by a predetermined pump head, and feeding the lubricating fluid, which has been fed via the lubricating fluid-guiding path, to a second one of the two sliding portions; and a third lubricating fluid pump which is provided at or near the rotating shaft, for raising the pressure of lubricating fluid which has been fed via the lubricating fluid-guiding path by a predetermined pump head, and feeding the lubricating fluid, which has been fed via the lubricating fluid-Type: ApplicationFiled: May 16, 2001Publication date: March 21, 2002Inventors: Masaki Koyama, Isamu Tsubono, Isao Hayase, Yuugo Mukai, Koichi Sekiguchi, Kenichi Oshima
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Publication number: 20020030585Abstract: A data transmission system using a human body as a signal transmission path includes a transmitter and a receiver. The transmitter uses a pair of electrodes which are held in close proximity to the skin of the human body. The transmitter transmits data to the receiver through the signal transmission path partly extending through the human body when a user carrying the transmitter touches a touch electrode of the receiver. The electrodes are integrated into a garment worn by the user in such a manner that the electrodes are kept in a closely facing relation to the skin of the user, thereby establishing the electrical path extending through the human body. With the integration of the two electrodes into the garment, the user wearing the garment as an everyday clothes or uniform can be easy and convenient to carry the transmitter for successful transmission of the data.Type: ApplicationFiled: September 10, 2001Publication date: March 14, 2002Applicant: Matsushita Electric Works, Ltd.Inventors: Kenji Doi, Masaru Hashimoto, Masaki Koyama, Yoshiko Suzuki, Tokuhisa Nishimura
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Publication number: 20010026766Abstract: A scroll compressor comprising: a vessel; a compressing mechanism provided within said vessel, the compressing mechanism comprising an orbiting scroll and a non-orbiting scroll each having a spiral wrap formed in a base plate and an Oldham ring for preventing the orbiting scroll from rotating around its axis; an oil reservoir provided within a vessel; a crankshaft for transmitting a power for compressing a working fluid; and a frame on which a main bearing for supporting the crankshaft is provided, wherein the crankshaft is provided with oil supply passages for communicating a vicinity of an orbiting bearing and a vicinity of the main bearing, and openings of the oil supply passages in the vicinity of the orbiting bearing and in the vicinity of the main bearing are positioned so that a pressure of an oil film in the orbiting bearing opening generated during an operation of the compressor is higher than a pressure of an oil film in the main bearing opening generated during an operation of the compressor.Type: ApplicationFiled: May 14, 2001Publication date: October 4, 2001Inventors: Toshiyuki Terai, Isao Hayase, Masahiro Takebayashi, Isamu Tsubono, Masaki Koyama, Koichi Sekiguchi
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Patent number: 5947709Abstract: An oil groove is provided in a space surrounded with the outer peripheral portion of an end plate of a revolving scroll, a stationary scroll and a frame on the inner surface of the frame, and lubricating oil attached to the inner surface of the frame by splashed with rotation of the balancing weight is reserved in the oil groove and then supplied to a key groove for sliding an Oldham-ring.Type: GrantFiled: November 10, 1997Date of Patent: September 7, 1999Assignee: Hitachi, Ltd.Inventors: Masaki Koyama, Akihiko Yamamoto, Muneo Mizumoto, Eiichi Satoh, Shigekazu Nozawa, Kazutaka Suefuji, Kensaku Oguni, Youichi Murai, Tomoyuki Sato
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Patent number: 5716202Abstract: An oil groove is provided in a space surrounded with the outer peripheral portion of an end plate of a revolving scroll, a stationary scroll and a frame on the inner surface of the frame, and lubricating oil attached to the inner surface of the frame by splashed with rotation of the balancing weight is reserved in the oil groove and then supplied to a key groove for sliding an Oldham-ring.Type: GrantFiled: September 14, 1995Date of Patent: February 10, 1998Assignee: Hitachi, Ltd.Inventors: Masaki Koyama, Akihiko Yamamoto, Muneo Mizumoto, Eiichi Satoh, Shigekazu Nozawa, Kazutaka Suefuji, Kensaku Oguni, Youichi Murai, Tomoyuki Sato