Patents by Inventor Isamu Kitahiro

Isamu Kitahiro 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).

  • Patent number: 5166086
    Abstract: A self-aligned TFT array for liquid crystal display devices and a method of manufacturing the array are disclosed. A protective insulating layer on a semiconductor layer is exactly aligned with a gate electrode. A self-alignment method is used for patterning the protective insulating layer and an impurity-doped semiconductor layer on the semiconductor layer. No lift-off process is necessary.
    Type: Grant
    Filed: February 12, 1992
    Date of Patent: November 24, 1992
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Mamoru Takeda, Ichiro Yamashita, Isamu Kitahiro
  • Patent number: 5137841
    Abstract: A self-aligned TFT array for liquid crystal display devices and a method of manufacturing the array are disclosed. A protective insulating layer on a semiconductor layer is exactly aligned with a gate electrode. A self-alignment method is used for patterning the protective insulating layer and an impurity-doped semiconductor layer on the semiconductor layer. No lift-off process is necessary.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: August 11, 1992
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Mamoru Takeda, Ichiro Yamashita, Isamu Kitahiro
  • Patent number: 4958205
    Abstract: A self-aligned TFT array for liquid-crystal display devices and a method of manufacturing the array are disclosed. A protective insulating layer on a semiconductor layer is exactly aligned with a gate electrode. A self-alignment method is used for patterning the protective insulating layer and an impurity-doped semiconductor layer on the semiconductor layer. No lift-off process is necessary.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: September 18, 1990
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Mamoru Takeda, Ichiro Yamashita, Isamu Kitahiro
  • Patent number: 4523102
    Abstract: In a step for bonding a color filter to a solid-state color-image sensor chip with an adhesive which is curable not only by light or more particularly ultraviolet-ray irradiation but also by heating, pre-curing or partial curing is effected by irradiating light rays after the color filter and the chip has been pressed against each other and correctly aligned with each other in a bonding device and then the chip with the partially-bonded color filter is removed from the bonding device and complete curing of the adhesive is accomplished by heating. According to one embodiment of the present invention the bonding step is carried out in an atmosphere containing the oxygen so that the adhesive which has been squeezed out from the space between the color filter and the chip may be prevented from being cured and subsequently removed in a simple manner.
    Type: Grant
    Filed: January 31, 1983
    Date of Patent: June 11, 1985
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Ogawa Kazufumi, Shigeru Kondo, Yoshiko Yasuda, Taketoshi Yonezawa, Isamu Kitahiro
  • Patent number: 4494688
    Abstract: A method suitable for connecting a plurality of metal leads at the same time with electrodes of a semiconductor device. Metal leads are provided each of which has a metal bump bonded thereto. The metal of the metal bump is softer than that of the lead. Those metal leads are located above the semiconductor device so that the bumps are contacted with the electrodes and then the bumps are bonded to the electrodes by heating, whereby the metal leads are connected with the electrodes.
    Type: Grant
    Filed: March 11, 1982
    Date of Patent: January 22, 1985
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kenzo Hatada, Isamu Kitahiro
  • Patent number: 4419425
    Abstract: Proposed is a method for manufacturing a color filter having the steps of: forming a stripe- or lattice-shaped light-shield pattern on one major surface of a transparent glass substrate; forming a photosensitive base film on the same major surface of the glass substrate on which the light-shield pattern is formed; exposing the photosensitive base film by light radiated from the other major surface of the glass substrate, using the light-shield pattern as a mask, developing the base film to remove a nonexposed portion of the photosensitive base film immediately above the light-shield pattern and to divide the photosensitive base film along the light-shield pattern; and selectively dyeing divided base film portions to form color layers.
    Type: Grant
    Filed: May 20, 1982
    Date of Patent: December 6, 1983
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazufumi Ogawa, Isamu Kitahiro
  • Patent number: 4418284
    Abstract: In a step for bonding a color filter to a solid-state image sensor so as to provide a color-sensitive image sensor (to be referred to as "a color-image sensor" in this specification), a method for bonding the color filter to the image sensor with an adhesive which is curable by ultraviolet radiation and also the constructions of color filters and image sensors which can facilitate the bonding step.
    Type: Grant
    Filed: March 11, 1981
    Date of Patent: November 29, 1983
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazufumi Ogawa, Shigeru Kondo, Yoshiko Yasuda, Taketoshi Yonezawa, Isamu Kitahiro
  • Patent number: 4388128
    Abstract: In a step for bonding a color filter to a solid-state color-image sensor chip with an adhesive which is curable not only by light or more particularly ultraviolet-ray irradiation but also by heating, pre-curing or partial curing is effected by irradiating light rays after the color filter and the chip has been pressed against each other and correctly aligned with each other in a bonding device and then the chip with the partially-bonded color filter is removed from the bonding device and complete curing of the adhesive is accomplished by heating. According to one embodiment of the present invention the bonding step is carried out in an atmosphere containing the oxygen so that the adhesive which has been squeezed out from the space between the color filter and the clip may be prevented from being cured and subsequently removed in a simple manner.
    Type: Grant
    Filed: March 11, 1981
    Date of Patent: June 14, 1983
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazufumi Ogawa, Shigeru Kondo, Yoshiko Yasuda, Taketoshi Yonezawa, Isamu Kitahiro