Patents by Inventor Tadashi Tsuyuki

Tadashi Tsuyuki 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: 8330922
    Abstract: A liquid crystal device includes: a pair of substrates; a liquid crystal layer sandwiched between the pair of substrates; a display pixel and a viewing-angle control pixel that are substantially rectangular and disposed on at least one of the pair of substrates; a first electrode and a second electrode disposed in the viewing-angle control pixel; and a plurality of strip-like electrode portions that are provided to at least either the first electrode or the second electrode and spaced from one another across a width direction of the viewing-angle control pixel, the liquid crystal device being configured so that an electric field is generated between the first electrode and the second electrode to control the direction of alignment of liquid crystal molecules in the liquid crystal layer, thereby changing the luminance of the viewing-angle control pixel in a direction oblique to the front.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: December 11, 2012
    Assignee: Sony Corporation
    Inventors: Toshiharu Matsushima, Tadashi Tsuyuki
  • Publication number: 20110058115
    Abstract: A liquid crystal device includes: a pair of substrates; a liquid crystal layer sandwiched between the pair of substrates; a display pixel and a viewing-angle control pixel that are substantially rectangular and disposed on at least one of the pair of substrates; a first electrode and a second electrode disposed in the viewing-angle control pixel; and a plurality of strip-like electrode portions that are provided to at least either the first electrode or the second electrode and spaced from one another across a width direction of the viewing-angle control pixel, the liquid crystal device being configured so that an electric field is generated between the first electrode and the second electrode to control the direction of alignment of liquid crystal molecules in the liquid crystal layer, thereby changing the luminance of the viewing-angle control pixel in a direction oblique to the front.
    Type: Application
    Filed: August 24, 2010
    Publication date: March 10, 2011
    Applicant: SONY CORPORATION
    Inventors: Toshiharu Matsushima, Tadashi Tsuyuki
  • Patent number: 7623206
    Abstract: A first substrate 211 has reflective layer 212 formed thereon, and the reflective layer 212 has one aperture 212a formed therein at each pixel. The reflective layer 212 has coloring layers 214 formed thereon, and the coloring layers 214 have an overcoat layer 215 formed thereon. The overcoat layer 215 has apertures 215a directly above the corresponding apertures 212a. Liquid crystal 232 lies in surface depressions 210a formed so as to correspond to the apertures 215a of the overcoat layer 215 and is thick above the apertures 212a of the reflective layer 212.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: November 24, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Keiji Takizawa, Tadashi Tsuyuki
  • Patent number: 7554632
    Abstract: Reflective display and transmissive display are performed by driving liquid crystal in a predetermined area (region b) in a non-crossing region by using an oblique electric field. Light passed through the region b when a voltage is applied is shaded since the liquid crystal in the region b is driven. Accordingly, at a position of a second substrate 2b corresponding to the region b, it is not necessary to provide a shading film 22. Consequently, a line width S1 of the shading film 22 can be designed to be smaller compared to that of a conventional one, and hence, a high aperture ratio can be obtained.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: June 30, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Chihiro Tanaka, Tadashi Tsuyuki
  • Publication number: 20080068542
    Abstract: Reflective display and transmissive display are performed by driving liquid crystal in a predetermined area (region b) in a non-crossing region by using an oblique electric field. Light passed through the region b when a voltage is applied is shaded since the liquid crystal in the region b is driven. Accordingly, at a position of a second substrate 2b corresponding to the region b, it is not necessary to provide a shading film 22. Consequently, a line width S1 of the shading film 22 can be designed to be smaller compared to that of a conventional one, and hence, a high aperture ratio can be obtained.
    Type: Application
    Filed: October 4, 2007
    Publication date: March 20, 2008
    Inventors: Chihiro Tanaka, Tadashi Tsuyuki
  • Patent number: 7295269
    Abstract: Reflective display and transmissive display are performed by driving liquid crystal in a predetermined area (region b) in a non-crossing region by using an oblique electric field. Light passed through the region b when a voltage is applied is shaded since the liquid crystal in the region b is driven. Accordingly, at a position of a second substrate 2b corresponding to the region b, it is not necessary to provide a shading film 22. Consequently, a line width S1 of the shading film 22 can be designed to be smaller compared to that of a conventional one, and hence, a high aperture ratio can be obtained.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: November 13, 2007
    Assignee: Seiko Epson Corporation
    Inventors: Chihiro Tanaka, Tadashi Tsuyuki
  • Publication number: 20070206138
    Abstract: A first substrate 211 has reflective layer 212 formed thereon, and the reflective layer 212 has one aperture 212a formed therein at each pixel. The reflective layer 212 has coloring layers 214 formed thereon, and the coloring layers 214 have an overcoat layer 215 formed thereon. The overcoat layer 215 has apertures 215a directly above the corresponding apertures 212a. Liquid crystal 232 lies in surface depressions 210a formed so as to correspond to the apertures 215a of the overcoat layer 215 and is thick above the apertures 212a of the reflective layer 212.
    Type: Application
    Filed: May 7, 2007
    Publication date: September 6, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Keiji TAKIZAWA, Tadashi TSUYUKI
  • Patent number: 7255981
    Abstract: A substrate is provided with a light reflective film including a base and a reflective layer, in which a plurality of concave portions or convex portions formed on the surface of the base are randomly arranged in the plane direction in 100 to 2,000 RGB dot units or a whole screen unit, are formed using a mask in which light transmissive or non-transmissive portions are randomly arranged in the plane direction in 100 to 2,000 RGB dot units or the whole screen unit.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: August 14, 2007
    Assignee: Seiko Epson Corporation
    Inventors: Toshihiro Otake, Mutsumi Matsuo, Tadashi Tsuyuki
  • Patent number: 7187426
    Abstract: A liquid crystal panel includes a pair of substrates 2a and 2b individually provided with electrodes 14a and 14b, a sealing material 3 with which the substrates 2a and 2b are attached to each other, a first terminal installed on one substrate 2a, a second terminal which is installed on the other substrate 2b and which is connected to the electrode 14b on the substrate 2b, a conducting material 21 for connecting the first terminal and the second terminal, a wiring 19b which is installed on the substrate 2a and which is connected to the first terminal, and a light-shielding film 23 installed in at least a part of a region, which corresponds to the wiring 19b, on the other substrate 2b.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: March 6, 2007
    Assignee: Seiko Epson Corporation
    Inventors: Hideki Kaneko, Chihiro Tanaka, Tadashi Tsuyuki
  • Patent number: 7161646
    Abstract: Reflective display and transmissive display are performed by driving liquid crystal in a predetermined area (region b) in a non-crossing region by using an oblique electric field. Light passed through the region b when a voltage is applied is shaded since the liquid crystal in the region b is driven. Accordingly, at a position of a second substrate 2b corresponding to the region b, it is not necessary to provide a shading film 22. Consequently, a line width S1 of the shading film 22 can be designed to be smaller compared to that of a conventional one, and hence, a high aperture ratio can be obtained.
    Type: Grant
    Filed: December 9, 2004
    Date of Patent: January 9, 2007
    Assignee: Seiko Epson Corporation
    Inventors: Chihiro Tanaka, Tadashi Tsuyuki
  • Patent number: 7106495
    Abstract: A substrate is provided with a light reflection film in which the heights of a plurality of convex portions or the depths of concave portions formed on a base material are specified to be substantially the same. The two-dimensional shapes of the plurality of convex portions or concave portions are specified to be the two-dimensional shapes of independent circles and polygons, or of either of them. In addition, the plurality of convex portions or concave portions are arranged in the direction of the plane on a random basis. The substrate is formed using a mask in which light transmission portions or light non-transmission portions are formed in units of dots, the number thereof being smaller than the number of dot regions. The dots are arranged irregularly in each of the units, and a plurality of units are included.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: September 12, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Toshihiro Otake, Mutsumi Matsuo, Tadashi Tsuyuki
  • Patent number: 7088417
    Abstract: An electrooptic device includes a first substrate 10, wiring 16 provided along one side of the first substrate 10 to extend to another side crossing the one side, and a coating layer 30 coating the wiring 16. Conceivable examples of the electrooptic device include a liquid crystal device, and an EL device. In the liquid crystal device, the coating layer 30 can be formed by a sealing material for bonding together the first substrate 10 and a second substrate 20 opposed to each other. The wiring 16 is coated with the coating layer 30 to be cut off from contact with the outside air.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: August 8, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Motohiro Kamijima, Chihiro Tanaka, Tadashi Tsuyuki, Kenichi Honda, Hideki Kaneko, Shoji Hinata
  • Patent number: 7085036
    Abstract: A substrate is provided with a light reflection film in which the heights of a plurality of convex portions or the depths of concave portions formed on a base material are specified to be substantially the same. The two-dimensional shapes of the plurality of convex portions or concave portions are specified to be the two-dimensional shapes of independent circles and polygons, or of either of them. In addition, the plurality of convex portions or concave portions are arranged in the direction of the plane on a random basis. The substrate is formed using a mask in which light transmission portions or light non-transmission portions are formed in units of dots, the number thereof being smaller than the number of dot regions. The dots are arranged irregularly in each of the units, and a plurality of units are included.
    Type: Grant
    Filed: September 12, 2005
    Date of Patent: August 1, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Toshihiro Otake, Mutsumi Matsuo, Tadashi Tsuyuki
  • Publication number: 20060164572
    Abstract: Reflective display and transmissive display are performed by driving liquid crystal in a predetermined area (region b) in a non-crossing region by using an oblique electric field. Light passed through the region b when a voltage is applied is shaded since the liquid crystal in the region b is driven. Accordingly, at a position of a second substrate 2b corresponding to the region b, it is not necessary to provide a shading film 22. Consequently, a line width S1 of the shading film 22 can be designed to be smaller compared to that of a conventional one, and hence, a high aperture ratio can be obtained.
    Type: Application
    Filed: March 24, 2006
    Publication date: July 27, 2006
    Inventors: Chihiro Tanaka, Tadashi Tsuyuki
  • Publication number: 20060147844
    Abstract: A substrate is provided with a light reflective film including a base and a reflective layer, in which a plurality of concave portions or convex portions formed on the surface of the base are randomly arranged in the plane direction in 100 to 2,000 RGB dot units or a whole screen unit, are formed using a mask in which light transmissive or non-transmissive portions are randomly arranged in the plane direction in 100 to 2,000 RGB dot units or the whole screen unit.
    Type: Application
    Filed: March 3, 2006
    Publication date: July 6, 2006
    Inventors: Toshihiro Otake, Mutsumi Matsuo, Tadashi Tsuyuki
  • Patent number: 7060396
    Abstract: A substrate is provided with a light reflective film including a base and a reflective layer, in which a plurality of concave portions or convex portions formed on the surface of the base are randomly arranged in the plane direction in 100 to 2,000 RGB dot units or a whole screen unit, are formed using a mask in which light transmissive or non-transmissive portions are randomly arranged in the plane direction in 100 to 2,000 RGB dot units or the whole screen unit.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: June 13, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Toshihiro Otake, Mutsumi Matsuo, Tadashi Tsuyuki
  • Patent number: 6995898
    Abstract: A substrate is provided with a light reflecting film in which the depths of a plurality of concave portions formed on the surface of the base or the heights of a plurality of convex portions formed on the surface of the base are substantially equal, the planar shapes of the plurality of concave portions or the convex portions are overlapped circles and overlapped polygons, or any one of the aforesaid circles and polygons, and a plurality of concave portions or convex portions are randomly arranged over a plane, the substrate with the light reflecting film being prepared by using a mask comprising light-transmitting parts or non-light-transmitting parts formed by a plurality of dots less than the number of the dot regions as one unit, in which the light-transmitting parts or the non-light-transmitting parts are randomly arranged in the unit, and a plurality of the one unit is repeated.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: February 7, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Toshihiro Otake, Mutsumi Matsuo, Tadashi Tsuyuki
  • Publication number: 20060007530
    Abstract: A substrate is provided with a light reflection film in which the heights of a plurality of convex portions or the depths of concave portions formed on a base material are specified to be substantially the same. The two-dimensional shapes of the plurality of convex portions or concave portions are specified to be the two-dimensional shapes of independent circles and polygons, or of either of them. In addition, the plurality of convex portions or concave portions are arranged in the direction of the plane on a random basis. The substrate is formed using a mask in which light transmission portions or light non-transmission portions are formed in units of dots, the number thereof being smaller than the number of dot regions. The dots are arranged irregularly in each of the units, and a plurality of units are included.
    Type: Application
    Filed: September 12, 2005
    Publication date: January 12, 2006
    Inventors: Toshihiro Otake, Mutsumi Matsuo, Tadashi Tsuyuki
  • Patent number: 6985196
    Abstract: A light reflecting film is formed such that a plurality of concave portions or convex portions formed on a base are aligned randomly over a plane by using a mask in which the positions of light-transmitting parts or non-light-transmitting parts are allocated according to a random function, and the light-transmitting parts or non-light-transmitting parts are aligned randomly over a plane.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: January 10, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Toshihiro Otake, Mutsumi Matsuo, Tadashi Tsuyuki
  • Patent number: 6970225
    Abstract: An electrooptic device has a first substrate 10 and a second substrate 20 disposed to oppose each other, and liquid crystal 35 provided between the first substrate 10 and the second substrate 20. This electrooptic device has a sealing material 30 surrounding the liquid crystal 35 and wires 16 continuously extending along one side of the first substrate 10 to another side intersecting said one side. The wires 16 each have a first wire layer which is continuously formed in the inside region of the sealing material 30 and the outside region of the sealing material 30 or which is continuously formed in the region overlapping the sealing material 30 and the outside region of the sealing material 30; and a second wire layer 182 which is formed in the inside region of the sealing material 30 or the region overlapping the sealing material 30. Since being not exposed to outside air, the second wire layer 182 is not corroded.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: November 29, 2005
    Assignee: Seiko Epson Corporation
    Inventors: Chihiro Tanaka, Tadashi Tsuyuki, Hideki Kaneko