Patents by Inventor Kouichi Tamagawa

Kouichi Tamagawa 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).

  • Method of manufacturing a solar cell module and apparatus of manufacturing a solar cell module
    Patent number: 8822255
    Abstract: A method of manufacturing a solar cell, which includes an edge deletion step using a laser beam, and a manufacturing apparatus which is used in such a method, the method and the apparatus being capable of preventing a shunt and cracks from being generated are provided. By radiating a first laser beam to a multilayer body, which includes a transparent electrode layer, a photoelectric conversion layer, and a back electrode layer sequentially formed on a transparent substrate, from a side of the transparent substrate, the photoelectric conversion layer and the back electrode layer in a first region are removed, and by radiating a second laser beam into the region such that the second laser beam is spaced from a peripheral rim of the region, the transparent electrode layer in a second region is removed.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: September 2, 2014
    Assignee: Ulvac, Inc.
    Inventors: Yoshiaki Yamamoto, Hitoshi Ikeda, Tomoki Ohnishi, Kouichi Tamagawa
  • METHOD OF MANUFACTURING A SOLAR CELL MODULE AND APPARATUS OF MANUFACTURING A SOLAR CELL MODULE
    Publication number: 20120238048
    Abstract: A method of manufacturing a solar cell, which includes an edge deletion step using a laser beam, and a manufacturing apparatus which is used in such a method, the method and the apparatus being capable of preventing a shunt and cracks from being generated are provided. By radiating a first laser beam to a multilayer body, which includes a transparent electrode layer, a photoelectric conversion layer, and a back electrode layer sequentially formed on a transparent substrate, from a side of the transparent substrate, the photoelectric conversion layer and the back electrode layer in a first region are removed, and by radiating a second laser beam into the region such that the second laser beam is spaced from a peripheral rim of the region, the transparent electrode layer in a second region is removed.
    Type: Application
    Filed: August 30, 2010
    Publication date: September 20, 2012
    Inventors: Yoshiaki Yamamoto, Hitoshi Ikeda, Tomoki Ohnishi, Kouichi Tamagawa