Patents by Inventor Shinya Sannohe

Shinya Sannohe 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: 5734454
    Abstract: A liquid crystal panel includes a first substrate on which pixel electrodes are formed in a matrix pattern, a second substrate on which a counter electrode is formed, an ultraviolet reducing layer formed on one of the first and second substrates and corresponding to the matrix pattern of the pixel electrodes, and a polymer dispersion liquid crystal layer sandwiched between the first and second substrates. The polymer dispersion liquid crystal layer is cured by irradiating ultraviolet light from the side on which the ultraviolet reducing layer is formed such that the polymer dispersion liquid crystal layer arranged between the counter electrode and each pixel electrode has an average liquid crystal drop diameter which is larger than that arranged in other areas.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: March 31, 1998
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hideki Omae, Hiroshi Takahara, Shinya Sannohe
  • Patent number: 5673127
    Abstract: A liquid crystal display panel includes a counter substrate having a counter electrode and a multi-layered dielectric film both formed thereon, and an array substrate formed with pixel electrodes and thin-film transistors serving as switching elements. A layer of polymer dispersed liquid crystal material containing a UV-curable resin component and a liquid crystal component is sealingly sandwiched between the counter and array substrates. A light shielding film is formed over each thin-film transistor. The multi-layered dielectric film is a laminated structure of alternating thin-films of SiO.sub.2 and HfO.sub.2. Since the multi-layered dielectric film is of a nature capable of transmitting UV-rays of light therethrough, the UV-curable resin component positioned underneath the multi-layered dielectric film can be cured during the manufacture.
    Type: Grant
    Filed: November 29, 1994
    Date of Patent: September 30, 1997
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroshi Takahara, Shinya Sannohe
  • Patent number: 5657160
    Abstract: A polarization plane rotator, for executing rotation of the plane of polarization of linearly polarized light that is incident thereon with a predetermined angle of incidence, is formed of a transparent prism or an array of such prisms, each prism having a triangular cross-sectional shape, with first, second and third surfaces having respective lines of intersection that are mutually parallel. The linearly polarized light is incident on the first surface, to be reflected twice in succession at the second and third surfaces, to be emitted from the first surface with the plane of polarization rotated by 90.degree. and the direction of propagation altered. An optical thin film is formed on the second and third surfaces, for substantially reducing an amount of phase difference between the P and S polarization components which results from reflection, thereby ensuring that the emitted light is substantially completely linearly polarized.
    Type: Grant
    Filed: December 3, 1993
    Date of Patent: August 12, 1997
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshito Miyatake, Shinya Sannohe
  • Patent number: 5579138
    Abstract: A polarization separation mirror is made by evaporation-depositing a first multi-layers thin film and a second multi-layers thin film respectively on both surfaces of a transparent substrate, the mirror acts as a polarization beam splitter by cementing it between two transparent prism bodies. By shifting the relative film thicknesses of the first multi-layers thin film and of the second multi-layers thin film, reflecting wavelength range for the S-polarization component is changed.
    Type: Grant
    Filed: March 28, 1994
    Date of Patent: November 26, 1996
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shinya Sannohe, Yoshito Miyatake
  • Patent number: 5513035
    Abstract: A polarizer comprising; a substrate transparent to a light of actual use and optical thin films of a higher refractive index than that of said substrate deposited on both surfaces of said substrate. The substrate is arranged so as to receive the incident light obliquely thereto. When the incident angle and the thickness of the optical thin film are optimally selected, the transmittance for the P polarized light can be made approximately 100%, while that for the S polarized light very small. The polarizer can extract a substantially linearly polarized light from natural light, A projection image display system has the polarizer as its pre-polarizer. The polarizer is also useful for infrared radiation.
    Type: Grant
    Filed: August 24, 1994
    Date of Patent: April 30, 1996
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshito Miyatake, Shinya Sannohe
  • Patent number: 5453859
    Abstract: A polarization beam splitter which includes a first prism, a second prism, and a dielectric multilayer film which is sandwiched between the first and second prisms is disclosed. The dielectric multilayer film comprising: a plurality of high refractive index layers having a refractive index higher than refractive indices of the first and second prisms; a plurality of intermediate refractive index layers having a refractive index lower than the refractive index of the high refractive index layers; and a plurality of low refractive index layers having a refractive index lower than the refractive index of the intermediate refractive index layers, a reference incident angle .theta..sub.0 of light which is incident on the dielectric multilayer film through the first or second prism being within a range of the following expression:.theta..sub.1 <.theta..sub.0 <.theta..sub.2where ##EQU1## where n.sub.H indicates the refractive index of the high refractive index layers, n.sub.
    Type: Grant
    Filed: June 1, 1994
    Date of Patent: September 26, 1995
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shinya Sannohe, Yoshito Miyatake
  • Patent number: 5357370
    Abstract: A polarizer comprising; a substrate transparent to a light of actual use and optical thin films of a higher refractive index than that of said substrate deposited on both surfaces of said substrate. The substrate is arranged so as to receive the incident light obliquely thereto. When the incident angle and the thickness of the optical thin film are optimally selected, the transmittance for the P polarized light can be made approximately 100%, while that for the S polarized light very small. The polarizer can extract a substantially linearly polarized light from natural light. A projection image display system has the polarizer as its pre-polarizer. The polarizer is also useful for infrared radiation.
    Type: Grant
    Filed: May 27, 1992
    Date of Patent: October 18, 1994
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshito Miyatake, Shinya Sannohe