Patents by Inventor Eiji Shidoji

Eiji Shidoji 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: 6863785
    Abstract: A sputtering apparatus and a sputter film deposition method, which includes a conventional magnetron and an AC magnetron for deposition of a low refractive index film, and a conventional magnetron and an AC magnetron for deposition of a high refractive index film, performs film deposition by each of the AC magnetrons until having achieved 90% of a designed film thickness, and then performs the film deposition only by each of the conventional magnetrons, and which can control the film thickness with high precision and have excellent productivity.
    Type: Grant
    Filed: August 7, 2003
    Date of Patent: March 8, 2005
    Assignee: Asahi Glass Company, Limited
    Inventors: Eiji Shidoji, Eiichi Ando, Tomohiro Yamada, Takahiro Mashimo
  • Publication number: 20040026240
    Abstract: A sputtering apparatus and a sputter film deposition method, which includes a conventional magnetron and an AC magnetron for deposition of a low refractive index film, and a conventional magnetron and an AC magnetron for deposition of a high refractive index film, performs film deposition by each of the AC magnetrons until having achieved 90% of a designed film thickness, and then performs the film deposition only by each of the conventional magnetrons, and which can control the film thickness with high precision and have excellent productivity.
    Type: Application
    Filed: August 7, 2003
    Publication date: February 12, 2004
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Eiji Shidoji, Eiichi Ando, Tomohiro Yamada, Takahiro Mashimo
  • Patent number: 6570709
    Abstract: The present invention provides a substrate with antireflection films, which has excellent antireflection properties to incident light at an oblique angle from the film face side and high transmittance. Moreover, the antireflection films of the present invention provide a reflection color tone that does not tend to be bluish. This object is achieved where the substrate with antireflection films comprises a transparent substrate and at least two antireflection film layers deposited on one side of the transparent substrate as described herein.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: May 27, 2003
    Assignee: Asahi Glass Company, Limited
    Inventors: Yoshihito Katayama, Yukio Kimura, Mikako Maekawa, Eiji Shidoji, Kazuyoshi Noda
  • Patent number: 6509684
    Abstract: A CRT panel glass and a CRT wherein a surface treating film is formed on an outer surface of a CRT panel so that overall transmittance distribution and reflectance distribution within an effective picture plane satisfy specific mathematical expressions, whereby, even with a flattened panel glass, brightness and contrast are uniform over the entire surface of the image display plane, and their production method.
    Type: Grant
    Filed: March 25, 2002
    Date of Patent: January 21, 2003
    Assignee: Asahi Glass Company, Limited
    Inventors: Noritoshi Horie, Tsunehiko Sugawara, Toshikazu Ikezawa, Takuji Oyama, Junnosuke Mizukami, Eiji Shidoji
  • Publication number: 20020153822
    Abstract: A CRT panel glass and a CRT wherein a surface treating film is formed on an outer surface of a CRT panel so that overall transmittance distribution and reflectance distribution within an effective picture plane satisfy specific mathematical expressions, whereby, even with a flattened panel glass, brightness and contrast are uniform over the entire surface of the image display plane, and their production method.
    Type: Application
    Filed: March 25, 2002
    Publication date: October 24, 2002
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Noritoshi Horie, Tsunehiko Sugawara, Toshikazu Ikezawa, Takuji Oyama, Junnosuke Mizukami, Eiji Shidoji
  • Publication number: 20020051294
    Abstract: It is to provide a substrate provided with antireflection films, which is excellent in antireflection properties to incident light at an oblique angle from the film face side, which has a high transmittance and with which the reflection color tone does not tend to be bluish.
    Type: Application
    Filed: July 26, 2001
    Publication date: May 2, 2002
    Applicant: Asahi Glass Company, Limited
    Inventors: Yoshihito Katayama, Yukio Kimura, Mikako Maekawa, Eiji Shidoji, Kazuyoshi Noda
  • Patent number: 6229587
    Abstract: A color liquid crystal display device has a liquid crystal layer of nematic liquid crystal having positive dielectric anisotropy and including a chiral material, which is interposed between two substrates disposed substantially in parallel, each provided with a transparent electrode and an aligning layer. The twist angle of the liquid crystal layer of liquid crystal molecules determined by the aligning layer of each of the substrates is 160°-300°. A pair of polarizing plates disposed outside the liquid crystal layer. A driving circuit applies a driving voltage across the transparent electrodes. A birefringent plate is disposed between the liquid crystal layer and an upper polarizing plates and a product &Dgr;n1·d1 of a refractive index anisotropy &Dgr;n1 of the liquid crystal in the liquid crystal layer and a thickness d1 of the liquid crystal layer is 1.2 &mgr;m-2.5 &mgr;m.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: May 8, 2001
    Assignee: Asahi Glass Company Ltd.
    Inventors: Masao Ozeki, Haruki Mori, Eiji Shidoji
  • Patent number: 6122021
    Abstract: A liquid crystal display element comprises a pair of substrates provided with electrodes and a liquid crystal and solidified matrix composite material, disposed between the pair of substrates, which includes a nematic liquid crystal dispersed and held in a solidified matrix, the nematic liquid crystal being such that the refractive index of the liquid crystal is changed depending on states of applying a voltage wherein in a state, the refractive index of the liquid crystal substantially coincides with that of the solidified matrix to thereby pass light, and in the other state, the former does not coincide with the latter to thereby cause the scattering of light, wherein the refractive index anisotropy .DELTA.n of the liquid crystal used is 0.18 or higher, and the dielectric anisotropy .DELTA..epsilon..sub.LC of the liquid crystal used satisfies the relation of 5<.DELTA..epsilon..sub.LC <13.
    Type: Grant
    Filed: November 30, 1994
    Date of Patent: September 19, 2000
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Yoshinori Hirai, Satoshi Niiyama, Tomoki Gunjima, Masanori Yuki, Masaya Kunigita, Yukio Yoshikawa, Eiji Shidoji
  • Patent number: 6018378
    Abstract: A composition for use in a liquid crystal optical element, such as a liquid crystal display or laser shutter device, comprised of a liquid crystal material and a solidified polymer material. The liquid crystal is such that its refractive index is changed depending on states of applying a voltage. In one state, the refractive index of the liquid crystal substantially coincides with the refractive index of the solidified matrix to thereby pass light. While in the other state, the refractive index of the liquid crystal does not coincide with the refractive index of the solidified matrix to thereby cause the scattering of light. Specifically, the liquid crystal material used in the composition has a refractive index anisotropy (.DELTA.n) is greater than 0.18 and the dielectric anisotropy (.DELTA..epsilon.) satisfies the relation of 5<.DELTA..epsilon.<11.6.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: January 25, 2000
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Yoshinori Hirai, Satoshi Niiyama, Tomoki Gunjima, Masanori Yuki, Masaya Kunigita, Yukio Yoshikawa, Eiji Shidoji
  • Patent number: 5986732
    Abstract: A color liquid crystal display device has a liquid crystal layer of nematic liquid crystal having positive dielectric anisotropy and including a chiral material, which is interposed between two substrates disposed substantially in parallel, each provided with a transparent electrode and an aligning layer. The twist angle of the liquid crystal layer of liquid crystal molecules determined by the aligning layer of each of the substrates is 160.degree.-300.degree.. A pair of polarizing plates are disposed outside the liquid crystal layer. A driving circuit applies a driving voltage across the transparent electrodes. A birefringent plate is disposed between the liquid crystal layer and an upper polarizing plate and the product .DELTA.n.sub.1 .multidot.d.sub.1 of the refractive index anisotropy .DELTA.n.sub.1 of the liquid crystal in the liquid crystal layer and the thickness d.sub.1 of the liquid crystal layer is 1.2 .mu.m-2.5 .mu.m. The birefringent plate is formed to have a relation of n.sub.X .gtoreq.n.sub.Z .
    Type: Grant
    Filed: September 23, 1996
    Date of Patent: November 16, 1999
    Assignee: Asahi Glass Company Ltd.
    Inventors: Masao Ozeki, Haruki Mori, Eiji Shidoji
  • Patent number: 5953090
    Abstract: A reflection type color liquid crystal display apparatus comprising a polarizing plate 1 having an absorbing axis 18, a birefringent plate 3, a liquid crystal layer 6 and a reflection layer 8 wherein the absorbing axis 18, a first orientation 14, a second orientation 15, a first optical anisotropic axis 16 and a second anisotropic axis 17 are set so as to form predetermined crossing angles .theta..sub.1, .theta..sub.2, .theta..sub.3, .theta..sub.4, and selected voltage values of at least three values are applied to the liquid crystal layer 6 from a multiplex driving circuit 10.Without using a color filter, a very bright chromatic color (white or black) is displayed at the time of an OFF waveform even in multiplex driving, and development of colors of very bright red, blue and green can be obtained with a selection voltage or an intermediate voltage between the selection voltage and a non-selection voltage.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: September 14, 1999
    Assignee: Asahi Glass Company Ltd.
    Inventors: Masao Ozeki, Haruki Mori, Eiji Shidoji, Toshihiko Suzuki
  • Patent number: 5386306
    Abstract: An active matrix liquid crystal display element and a projection type active matrix liquid crystal display device by which a display can be obtained which is good in color balance and high in brightness and also in contrast ratio. The display element includes a liquid crystal material held between an active matrix substrate and a counter electrode substrate. The liquid crystal material is formed from a liquid crystal polymer composite wherein nematic liquid crystal is contained dispersively in a polymer matrix having a refractive index which coincides with the ordinary refractive index of the liquid crystal used, and a silicon thin film transistor is used as an active element on the active matrix substrate. The display device includes such an active matrix liquid crystal display element, a light source for projection light, and an optical system of projection.
    Type: Grant
    Filed: May 22, 1992
    Date of Patent: January 31, 1995
    Assignee: Asahi Glass Company Ltd.
    Inventors: Tomoki Gunjima, Masanori Yuki, Masaya Kunigita, Yoshinori Hirai, Yukio Yoshikawa, Eiji Shidoji
  • Patent number: 5150232
    Abstract: An active matrix liquid crystal display element and a projection type active matrix liquid crystal display device by which a display can be obtained which is good in color balance and high in brightness and also in contrast ratio. The display element includes a liquid crystal material held between an active matrix substrate and a counter electrode substrate. The liquid crystal material is formed from a liquid crystal polymer composite wherein nematic liquid is contained dispersively in a polymer matrix having a refractive index which coincides with the ordinary refractive index of the liquid crystal used, and a silicon thin film transistor is used as an active element on the active matrix substrate. The display device includes such an active matrix liquid crystal display element, a light source for projection light, and an optical system of projection.
    Type: Grant
    Filed: September 27, 1989
    Date of Patent: September 22, 1992
    Assignee: Asahi Glass Company Ltd.
    Inventors: Tomoki Gunkima, Masanori Yuki, Masaya Kunigita, Yoshinori Hirai, Yukio Yoshikawa, Eiji Shidoji