Patents by Inventor Kazuhisa Nakashita

Kazuhisa Nakashita 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: 20070141859
    Abstract: A laser processing process which comprises laser annealing a silicon film 2 ?m or less in thickness by irradiating a laser beam 400 nm or less in wavelength and being operated in pulsed mode with a pulse width of 50 nsec or more, and preferably, 100 nsec or more. A laser processing apparatus which comprises a laser generation device and a stage for mounting thereon a sample provided separately from said devices to thereby prevent transfer of vibration attributed to the movement of the stage to the laser generation device and the optical system. A stable laser beam can be obtained to thereby improve productivity.
    Type: Application
    Filed: February 14, 2007
    Publication date: June 21, 2007
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroaki Ishihara, Kazuhisa Nakashita, Hideto Ohnuma, Nobuhiro Tanaka, Hiroki Adachi
  • Patent number: 6638800
    Abstract: A laser processing process which comprises laser annealing a silicon film 2 &mgr;m or less in thickness by irradiating at laser beam 400 nm or less in wavelength and being operated in pulsed mode with a pulse width of 50 nsec or more, and preferably, 100 nsec or more. A laser processing apparatus which comprises a laser generation device and a stage for mounting thereon a sample provided separately from said devices to thereby prevent transfer of vibration attributed to the movement of the stage to the laser generation device and the optical system. A stable laser beam can be obtained to thereby improve productivity.
    Type: Grant
    Filed: October 1, 1999
    Date of Patent: October 28, 2003
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroaki Ishihara, Kazuhisa Nakashita, Hideto Ohnuma, Nobuhiro Tanaka, Hiroki Adachi
  • Patent number: 5891764
    Abstract: A laser processing process which comprises laser annealing a silicon film 2 .mu.m or less in thickness by irradiating a laser beam 400 nm or less in wavelength and being operated in pulsed mode with a pulse width of 50 nsec or more, and preferably, 100 nsec or more.A laser processing apparatus which comprises a laser generation device and a stage for mounting thereon a sample provided separately from said device, to thereby prevent transfer of vibration attributed to the movement of the stage to the laser generation device and the optical system. A stable laser beam can be obtained to thereby improve productivity.
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: April 6, 1999
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroaki Ishihara, Kazuhisa Nakashita, Hideto Ohnuma, Nobuhiro Tanaka, Hiroki Adachi
  • Patent number: 5643801
    Abstract: A laser processing process which includes laser annealing a silicon film 2 .mu.m or less in thickness by irradiating a laser beam 400 nm or less in wavelength and being operated in pulsed mode with a pulse width of 50 nsec or more and preferably, 100 nsec or more. The invention further relates to a laser processing apparatus which includes a laser generation device and a stage for mounting thereon a sample provide separately from said device, to thereby prevent transfer of vibration attributed to the movement of the stage to the laser generation device and the optical system. A stable laser beam can be obtained to thereby improve productivity.
    Type: Grant
    Filed: August 4, 1995
    Date of Patent: July 1, 1997
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroaki Ishihara, Kazuhisa Nakashita, Hideto Ohnuma, Nobuhiro Tanaka, Hiroki Adachi
  • Patent number: 5283087
    Abstract: A plasma process and an apparatus therefor are described. A number of substrates are disposed between a pair of electrodes, to which a high frequency electric power is applied in order to generate glow discharge and induce a plasma. The substrates in the plasma are applied with an alternating electric field. By virtue of the alternating electric field, the substrates are subjected to sputtering action.
    Type: Grant
    Filed: April 6, 1992
    Date of Patent: February 1, 1994
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Mitsunori Tsuchiya, Atsushi Kawano, Shinji Imatou, Kazuhisa Nakashita, Toshiji Hamatani, Takashi Inushima, Kenji Itou
  • Patent number: 5256483
    Abstract: A plasma process and an apparatus therefor are described. A number of substrates are disposed between a pair of electrodes, to which a high frequency electric power is applied in order to generate glow discharge and induce a plasma. The substrates in the plasma are applied with an alternating electric field. By virtue of the alternating electric field, the substrates are subjected to sputtering action.
    Type: Grant
    Filed: October 31, 1990
    Date of Patent: October 26, 1993
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Mitsunori Tsuchiya, Atsushi Kawano, Shinji Imatou, Kazuhisa Nakashita, Toshiji Hamatani, Takashi Inushima, Kenji Itou
  • Patent number: 5079031
    Abstract: An improved apparatus and method for depositing thin films on a substrate. The apparatus utilizes two types of energy input. A pair of electrodes are provided in a reaction chamber and supplied with first AC electric energy at 1 to 100 MHz for generating a plasma gas in a reaction chamber therebetween. The substrate is mounted on a substrate holder to which second electric energy is supplied.
    Type: Grant
    Filed: March 17, 1989
    Date of Patent: January 7, 1992
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Shinji Imatou, Noriya Ishida, Mari Sasaki, Mitsunori Sakama, Takeshi Fukada, Naoki Hirose, Mitsunori Tsuchiya, Atsushi Kawano, Kazuhisa Nakashita, Junichi Takeyama, Toshiji Hamatani
  • Patent number: 5013688
    Abstract: An improved electric device and manufacturing method for the same are described. The device is, for example, an IC chip clothed with moulding. In advance of the moulding process, the IC chip is coated with silicon nitride in order to protect the IC chip from moisture invaded through cracks or gaps. The coating of silicon nitride is carried out after cleaning the surface of the IC chip by plasma CVD.
    Type: Grant
    Filed: July 26, 1989
    Date of Patent: May 7, 1991
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunepi Yamazaki, Kazuo Urata, Itaru Koyama, Noriya Ishida, Mari Sasaki, Shinji Imatou, Kazuhisa Nakashita, Naoki Hirose
  • Patent number: 4987004
    Abstract: A plasma process and an apparatus therefor are described. A number of substrates are disposed between a pair of electrodes, to which a high frequency electric power is applied in order to generate glow discharge and induce a plasma. The substrates in the plasma are applied with an alternating electric field. By virtue of the alternating electric field, the substrates are subjected to sputtering action.
    Type: Grant
    Filed: May 11, 1990
    Date of Patent: January 22, 1991
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Mitsunori Tsuchiya, Atsushi Kawano, Shinji Imatou, Kazuhisa Nakashita, Toshiji Hamatani, Takashi Inushima, Kenji Itou
  • Patent number: 4971667
    Abstract: A plasma process and an apparatus therefor are described. A number of substrates are disposed between a pair of electrodes, to which a high frequency electromagnetic power is applied in order to generate glow discharge and induce a plasma. The substrates in the plasma are additionally applied with an alternating electric field. By virtue of the alternating electric field, the substrates are subjected to sputtering action.
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: November 20, 1990
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Mitsunori Tsuchiya, Atsushi Kawano, Shinji Imatou, Kazuhisa Nakashita, Toshiji Hamatani, Takashi Inushima, Kenji Itou