Patents by Inventor Tetsushi Tanada

Tetsushi Tanada 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: 7567318
    Abstract: A reflector includes a heat-embossed layer having a reflective surface having a plurality of recesses, a highly reflective film laminated on the heat-embossed layer and having the reflective surface, and a moisture-proof base material laminated on the opposite side of the heat-embossed layer to the reflective surface. A liquid crystal display panel includes the reflector. The reflector may include an embossed layer having a reflective surface having a plurality of recesses, and an embossed base separable from the embossed layer and disposed on the opposite side of the embossed layer to the reflective surface.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: July 28, 2009
    Assignee: Alps Electric Co., Ltd.
    Inventors: Tetsushi Tanada, Hiroyasu Miyata
  • Patent number: 6864934
    Abstract: In a liquid crystal display, first and second substrates are provided opposing each other with a liquid crystal layer held between them, the outer surface of the first substrate serves as a light scattering surface having a light scattering characteristic, and a reflector including an irregular reflection surface is provided on the light scattering surface so that the reflection surface is on the light scattering surface side.
    Type: Grant
    Filed: March 8, 2004
    Date of Patent: March 8, 2005
    Assignee: Alps Electric Co., Ltd.
    Inventors: Katsumasa Yoshii, Tetsushi Tanada
  • Patent number: 6853420
    Abstract: A liquid crystal display includes a pair of substrates which oppose each other with a liquid crystal layer therebetween; a light source provided on the exterior of one of the substrates; and at least an organic film, a metallic reflection film, an overcoat film, an electrode layer, and an alignment film formed on the inner face of one of the substrates. Many concaves are contiguously formed on a surface of the organic film, the inner surface of each concave constituting a part of a spherical surface. The metallic reflection film has a thickness of 80 to 500 ?. A transflector and a liquid crystal display including the transflector are also disclosed.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: February 8, 2005
    Assignee: Alps Electric Co., Ltd.
    Inventors: Tetsushi Tanada, Mitsuo Ohizumi, Mitsuru Kano
  • Patent number: 6847425
    Abstract: A liquid crystal display includes a liquid crystal cell including a first transparent substrate and a second substrate, and a reflector attached to the outer surface of the first transparent substrate with a bonding layer therebetween. A first retarder is disposed on the outer surface of the second transparent substrate, a second retarder is disposed on the first retarder, and a polarizer is disposed on the second retarder. The reflector includes a resin substrate having an irregular surface and a metal reflection layer also having an irregular surface that corresponds to the irregular surface of the reflector. The reflector is attached to the liquid cell so that the metal reflector layer faces the first transparent substrate.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: January 25, 2005
    Assignee: Alps Electric Co., Ltd.
    Inventors: Tetsushi Tanada, Mitsuo Ohizumi, Mitsuru Kano
  • Patent number: 6801278
    Abstract: The invention provides a liquid crystal display apparatus having a flexible substrate that realizes the bright and high quality display. A liquid crystal display apparatus has a liquid crystal layer interposed between a pair of flexible substrates that face each other, and a plurality of concave faces having a spherical inner surface are formed continuously on the surface of the substrate that faces the liquid crystal layer side.
    Type: Grant
    Filed: October 10, 2001
    Date of Patent: October 5, 2004
    Assignee: Alps Electric Co., Ltd.
    Inventors: Tetsushi Tanada, Mitsuru Kano
  • Patent number: 6788371
    Abstract: A liquid crystal display device has a pair of transparent substrates facing each other with a liquid crystal layer therebetween. First and second phase difference plates and a first polarizing plate are formed sequentially on one of the transparent substrates, while a reflector, a third phase difference plate, and a second polarizing plate are formed sequentially on the other of the transparent substrates. The reflector is a metal reflection film on a base material with concave portions formed thereon. The metal reflection film includes a plurality of concave surfaces corresponding to the concave portions that face the transparent substrate. The thickness of the metal reflection film is within the range of 5 to 50 nm.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: September 7, 2004
    Assignee: ALPS Electric Co., Ltd.
    Inventors: Tetsushi Tanada, Mitsuo Ohizumi, Mitsuru Kano
  • Publication number: 20040169800
    Abstract: In a liquid crystal display, first and second substrates are provided opposing each other with a liquid crystal layer held between them, the outer surface of the first substrate serves as a light scattering surface having a light scattering characteristic, and a reflector including an irregular reflection surface is provided on the light scattering surface so that the reflection surface is on the light scattering surface side.
    Type: Application
    Filed: March 8, 2004
    Publication date: September 2, 2004
    Inventors: Katsumasa Yoshii, Tetsushi Tanada
  • Publication number: 20040105057
    Abstract: A reflector includes a heat-embossed layer having a reflective surface having a plurality of recesses, a highly reflective film laminated on the heat-embossed layer and having the reflective surface, and a moisture-proof base material laminated on the opposite side of the heat-embossed layer to the reflective surface. A liquid crystal display panel includes the reflector. The reflector may include an embossed layer having a reflective surface having a plurality of recesses, and an embossed base separable from the embossed layer and disposed on the opposite side of the embossed layer to the reflective surface.
    Type: Application
    Filed: November 25, 2003
    Publication date: June 3, 2004
    Applicant: Alps Electric Co., Ltd.
    Inventors: Tetsushi Tanada, Hiroyasu Miyata
  • Publication number: 20040090574
    Abstract: A liquid crystal display includes a pair of substrates which oppose each other with a liquid crystal layer therebetween; a light source provided on the exterior of one of the substrates; and at least an organic film, a metallic reflection film, an overcoat film, an electrode layer, and an alignment film formed on the inner face of one of the substrates. Many concaves are contiguously formed on a surface of the organic film, the inner surface of each concave constituting a part of a spherical surface. The metallic reflection film has a thickness of 80 to 500 Å. A transflector and a liquid crystal display including the transflector are also disclosed.
    Type: Application
    Filed: October 23, 2003
    Publication date: May 13, 2004
    Inventors: Tetsushi Tanada, Mitsuo Ohizumi, Mitsuru Kano
  • Patent number: 6734934
    Abstract: In a liquid crystal display, first and second substrates are provided opposing each other with a liquid crystal layer held between them, the outer surface of the first substrate serves as a light scattering surface having a light scattering characteristic, and a reflector including an irregular reflection surface is provided on the light scattering surface so that the reflection surface is on the light scattering surface side.
    Type: Grant
    Filed: January 7, 2003
    Date of Patent: May 11, 2004
    Assignee: Alps Electric Co., Ltd.
    Inventors: Katsumasa Yoshii, Tetsushi Tanada
  • Patent number: 6686983
    Abstract: A reflection type liquid crystal display device has phase difference plates and a polarizer provided on an outer side of a liquid crystal cell. The liquid crystal layer is twisted by 240 to 250 degrees with other characteristics including: &Dgr;ndLC for the crystal cell of 600 nm-800 nm, &Dgr;ndRF1 for the first phase difference plate of 100 nm-200 nm, and the lagging axis &ggr; of 60 to 100 degrees, &Dgr;ndRF2 for the second phase difference plate of 300 nm-500 nm and a lagging axis &agr; of 90 to 140 degrees, and an absorption axis &agr; of the polarizer of 20 to 70 degrees or 110 to 160 degrees.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: February 3, 2004
    Assignee: Alps Electric, Co., Ltd.
    Inventors: Tetsushi Tanada, Mitsuo Ohizumi, Mitsuru Kano
  • Patent number: 6671015
    Abstract: A liquid crystal display includes a pair of substrates which oppose each other with a liquid crystal layer therebetween; a light source provided on the exterior of one of the substrates; and at least an organic film, a metallic reflection film, an overcoat film, an electrode layer, and an alignment film formed on the inner face of one of the substrates. Many concave portions are contiguously formed on a surface of the organic film, the inner surface of each concave portion constituting a part of a spherical surface. The metallic reflection film has a thickness of 80 to 500 Å. A transflector and a liquid crystal display including the transflector are also disclosed.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: December 30, 2003
    Assignee: Alps Electric Co., Ltd.
    Inventors: Tetsushi Tanada, Mitsuo Ohizumi, Mitsuru Kano
  • Publication number: 20030128318
    Abstract: In a liquid crystal display, first and second substrates are provided opposing each other with a liquid crystal layer held between them, the outer surface of the first substrate serves as a light scattering surface having a light scattering characteristic, and a reflector including an irregular reflection surface is provided on the light scattering surface so that the reflection surface is on the light scattering surface side.
    Type: Application
    Filed: January 7, 2003
    Publication date: July 10, 2003
    Applicant: Alps Electric Co., Ltd.
    Inventors: Katsumasa Yoshii, Tetsushi Tanada
  • Publication number: 20030086039
    Abstract: A liquid crystal display device has a pair of transparent substrates facing each other with a liquid crystal layer therebetween. First and second phase difference plates and a first polarizing plate are formed sequentially on one of the transparent substrates, while a reflector, a third phase difference plate, and a second polarizing plate are formed sequentially on the other of the transparent substrates. The reflector is a metal reflection film on a base material with concave portions formed thereon. The metal reflection film includes a plurality of concave surfaces corresponding to the concave portions that face the transparent substrate. The thickness of the metal reflection film is within the range of 5 to 50 nm.
    Type: Application
    Filed: July 23, 2002
    Publication date: May 8, 2003
    Applicant: Alps Electric Co., Ltd.
    Inventors: Tetsushi Tanada, Mitsuo Ohizumi, Mitsuru Kano
  • Publication number: 20030038911
    Abstract: A liquid crystal display includes a liquid crystal cell including a first transparent substrate and a second substrate, and a reflector attached to the outer surface of the first transparent substrate with a bonding layer therebetween. A first retarder is disposed on the outer surface of the second transparent substrate, a second retarder is disposed on the first retarder, and a polarizer is disposed on the second retarder. The reflector includes a resin substrate having an irregular surface and a metal reflection layer also having an irregular surface that corresponds to the irregular surface of the reflector. The reflector is attached to the liquid cell so that the metal reflector layer faces the first transparent substrate.
    Type: Application
    Filed: July 10, 2002
    Publication date: February 27, 2003
    Inventors: Tetsushi Tanada, Mitsuo Ohizumi, Mitsuru Kano
  • Patent number: 6429919
    Abstract: A brighter and whiter reflector provides high reflection efficiency over a wide range of angles. An indenting tool is pressed against the surface of a matrix base material; the pressing operation is repeated while changing the position of the indenting tool on the surface of the base material for the matrix to successively form many pits, the inner surfaces of which are shaped like partial spheres, on the mold surface of the matrix base material so as to provide it as the matrix for forming the reflector. Then, a transfer mold having a mold surface which has a reversed pattern of the pits and projections of the mold surface of the matrix is made, and the mold surface of the transfer mold is transferred to the surface of the base material for the reflector to provide a reflector (1). Pits (4) of the reflector (1) are formed so that the depths the pits (4) range from 0.
    Type: Grant
    Filed: August 28, 2000
    Date of Patent: August 6, 2002
    Assignee: Alps Electric Co., Ltd.
    Inventors: Tomomasa Takatsuka, Koichi Moue, Masao Ohkita, Tatsuya Moriike, Tetsushi Tanada, Akito Miura, Mitsuru Kano
  • Patent number: 6421106
    Abstract: A brighter and whiter reflector provides high reflection efficiency over a wide range of angles. An indenting tool is pressed against the surface of a matrix base material; the pressing operation is repeated while changing the position of the indenting tool on the surface of the base material for the matrix to successively form many pits, the inner surfaces of which are shaped like partial spheres, on the mold surface of the matrix base material so as to provide it as the matrix for forming the reflector. Then, a transfer mold having a mold surface which has a reversed pattern of the pits and projections of the mold surface of the matrix is made, and the mold surface of the transfer mold is transferred to the surface of the base material for the reflector to provide a reflector (1). Pits (4) of the reflector (1) are formed so that the depths the pits (4) range from 0.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: July 16, 2002
    Assignee: Alps Electric Co., Ltd.
    Inventors: Tomomasa Takatsuka, Koichi Moue, Masao Ohkita, Tatsuya Moriike, Tetsushi Tanada, Akito Miura, Mitsuru Kano
  • Publication number: 20020080311
    Abstract: A reflection type liquid crystal display device which satisfies at least the performance requirements for high brightness in the bright display (white display) and a high contrast.
    Type: Application
    Filed: October 17, 2001
    Publication date: June 27, 2002
    Applicant: Alps Electric Co., Ltd.
    Inventors: Tetsushi Tanada, Mitsuo Ohizumi, Mitsuru Kano
  • Publication number: 20020054257
    Abstract: A liquid crystal display includes a pair of substrates which oppose each other with a liquid crystal layer therebetween; a light source provided on the exterior of one of the substrates; and at least an organic film, a metallic reflection film, an overcoat film, an electrode layer, and an alignment film formed on the inner face of one of the substrates. Many concaves are contiguously formed on a surface of the organic film, the inner surface of each concave constituting a part of a spherical surface. The metallic reflection film has a thickness of 80 to 500 Å. A transflector and a liquid crystal display including the transflector are also disclosed.
    Type: Application
    Filed: September 17, 2001
    Publication date: May 9, 2002
    Applicant: Alps Electric Co., Ltd.
    Inventors: Tetsushi Tanada, Mitsuo Ohizumi, Mitsuru Kano
  • Publication number: 20020041356
    Abstract: The invention provides a liquid crystal display apparatus having a flexible substrate that realizes the bright and high quality display. A liquid crystal display apparatus 1 in which a liquid crystal layer 30 is interposed between a pair of flexible substrates 10 and 20 that are faced each other, and many concave faces having the inner surface that is a part of the spherical surface are formed continuously on the surface of the substrate 10 that is facing to the liquid crystal layer 30 side is employed.
    Type: Application
    Filed: October 10, 2001
    Publication date: April 11, 2002
    Applicant: Alps Electric Co., Ltd.
    Inventors: Tetsushi Tanada, Mitsuru Kano