Patents by Inventor Shigeki Nishizawa

Shigeki Nishizawa 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: 9239487
    Abstract: A display device includes a first substrate; a second substrate; a plurality of pixels; a shutter mechanism section formed in correspondence with each of the pixels, a fluid sealed in an space between the first substrate and the second substrate; and an impact absorption section located to face one substrate among the first substrate and the second substrate, on the side opposite to the side on which the fluid is located. The shutter mechanism section is formed on the second substrate and includes a movable shutter section for controlling a light transmittance of each of the pixels. The impact absorption section includes a third substrate located to face the one substrate, on the side opposite to the fluid, a sealing section for bringing together the one substrate and the third substrate, and a predetermined gap formed among the one substrate, the third substrate and the sealing section.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: January 19, 2016
    Assignee: Pixtronix, Inc.
    Inventors: Takeomi Morita, Masataka Okamoto, Takahiko Muneyoshi, Shigeki Nishizawa, Katsumi Matsumoto
  • Patent number: 9041995
    Abstract: A fixed aperture includes a first fixed slit and a second fixed slit which are arranged respectively in regions positioned on both sides with a moving line sandwiched therebetween. A drive aperture includes a first drive slit and a second drive slit which are arranged on both sides with the moving line sandwiched therebetween. The first fixed slit and the first drive slit are formed in an extending manner along a first line, and are arranged such that these slits communicate with each other when a shutter is at a position where the transmission of light is allowed. The second fixed slit and the second drive slit are formed in an extending manner along a second line which intersects with the first line, and are arranged such that these slits communicate with each other when the shutter is at a position where the transmission of light is allowed.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: May 26, 2015
    Assignee: Pixtronix, Inc.
    Inventor: Shigeki Nishizawa
  • Patent number: 8934069
    Abstract: Provided is a liquid crystal display device which includes: a pair of transparent substrates which are arranged to face each other in an opposed manner with a liquid crystal layer sandwiched therebetween; a non-self-luminous display part having at least a light transmitting region which allows light to pass therethrough and a light shielding region which shields light; and a backlight part, wherein the transparent substrate arranged on a backlight part side includes a reflection film formed of a metal thin film in which an opening region corresponding to the light transmitting region is formed on a liquid crystal layer side of the transparent substrate on the backlight part side, and the backlight light incident on the opening region passes through the opening region, and the backlight light incident on a region where the reflection film is formed is reflected toward the backlight part side.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: January 13, 2015
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Shigeki Nishizawa
  • Publication number: 20140049722
    Abstract: A display device includes a first substrate; a second substrate; a plurality of pixels; a shutter mechanism section formed in correspondence with each of the pixels, a fluid sealed in an space between the first substrate and the second substrate; and an impact absorption section located to face one substrate among the first substrate and the second substrate, on the side opposite to the side on which the fluid is located. The shutter mechanism section is formed on the second substrate and includes a movable shutter section for controlling a light transmittance of each of the pixels. The impact absorption section includes a third substrate located to face the one substrate, on the side opposite to the fluid, a sealing section for bringing together the one substrate and the third substrate, and a predetermined gap formed among the one substrate, the third substrate and the sealing section.
    Type: Application
    Filed: October 30, 2013
    Publication date: February 20, 2014
    Applicant: Pixtronix, Inc.
    Inventors: Takeomi Morita, Masataka Okamoto, Takahiko Muneyoshi, Shigeki Nishizawa, Katsumi Matsumoto
  • Patent number: 8610865
    Abstract: The TFT substrate includes a pixel electrode and a common electrode laminated one on top of another via an insulating layer, one of the pixel electrode and the common electrode provided farther from the liquid crystal layer being formed into a plane shape, and another of the pixel electrode and the common electrode provided closer to the liquid crystal layer having slits formed therein, each of the plurality of slits having a closed end portion. The liquid crystal display panel further includes a reflection portion for reflecting light, the reflection portion being formed at a surface of the liquid crystal display panel on the illumination device side in a portion which overlaps, in plan view, the end portion of the each of the slits in the long-side direction and a vicinity thereof, and a part of an inner region of the each of the slits.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: December 17, 2013
    Assignee: Japan Display Inc.
    Inventors: Masaya Adachi, Osamu Itou, Shigeki Nishizawa
  • Patent number: 8599462
    Abstract: A display device includes a first substrate; a second substrate; a plurality of pixels; a shutter mechanism section formed in correspondence with each of the pixels, a fluid sealed in an space between the first substrate and the second substrate; and an impact absorption section located to face one substrate among the first substrate and the second substrate, on the side opposite to the side on which the fluid is located. The shutter mechanism section is formed on the second substrate and includes a movable shutter section for controlling a light transmittance of each of the pixels. The impact absorption section includes a third substrate located to face the one substrate, on the side opposite to the fluid, a sealing section for bringing together the one substrate and the third substrate, and a predetermined gap formed among the one substrate, the third substrate and the sealing section.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: December 3, 2013
    Assignee: Pixtronix, Inc.
    Inventors: Takeomi Morita, Masataka Okamoto, Takahiko Muneyoshi, Shigeki Nishizawa, Katsumi Matsumoto
  • Patent number: 8514348
    Abstract: A light guide plate is for reflecting incident light from an end surface thereof in an inside to obtain surface emission from a front surface thereof. The light guide plate includes protrusions and recesses formed on one of the front surface and a rear surface on an opposite side of the front surface. The protrusions and recesses are formed of a shape in which first mountain-range shapes each including a first ridge continuing along a first direction, which is a direction toward the inside from the end surface, and second mountain-range shapes each including a second ridge continuing along a second direction intersecting with the first direction are combined. Each first mountain-range shape includes a pair of first side surfaces on both sides of the first ridge. Each second mountain-range shape includes a pair of second side surfaces on both sides of the second ridge.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: August 20, 2013
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Yasuhisa Shiraishi, Atsushi Tsuruoka, Shigeki Nishizawa
  • Patent number: 8462289
    Abstract: A liquid crystal display panel formed by using a TFT substrate and a color filter substrate is polished to decrease the thickness thereof so that it can be curved. The liquid crystal display panel and various optical sheets are sandwiched between a frame forming a curved surface and a light guide plate forming a curved surface, to thereby form a curved surface. An upper polarizer plate and a lower polarizer plate are, respectively, sandwiched between the surface cover and the liquid crystal display panel, and between the liquid crystal display panel and the optical sheet, and are not adhered or are partly adhered to the liquid crystal display panel.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: June 11, 2013
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Shigeki Nishizawa, Nobuyuki Koganezawa, Fuimiyuki Sato
  • Publication number: 20130077146
    Abstract: A fixed aperture includes a first fixed slit and a second fixed slit which are arranged respectively in regions positioned on both sides with a moving line sandwiched therebetween. A drive aperture includes a first drive slit and a second drive slit which are arranged on both sides with the moving line sandwiched therebetween. The first fixed slit and the first drive slit are formed in an extending manner along a first line, and are arranged such that these slits communicate with each other when a shutter is at a position where the transmission of light is allowed. The second fixed slit and the second drive slit are formed in an extending manner along a second line which intersects with the first line, and are arranged such that these slits communicate with each other when the shutter is at a position where the transmission of light is allowed.
    Type: Application
    Filed: September 11, 2012
    Publication date: March 28, 2013
    Inventor: Shigeki NISHIZAWA
  • Publication number: 20130016419
    Abstract: A display device includes a first substrate; a second substrate; a plurality of pixels; a shutter mechanism section formed in correspondence with each of the pixels, a fluid sealed in an space between the first substrate and the second substrate; and an impact absorption section located to face one substrate among the first substrate and the second substrate, on the side opposite to the side on which the fluid is located. The shutter mechanism section is formed on the second substrate and includes a movable shutter section for controlling a light transmittance of each of the pixels. The impact absorption section includes a third substrate located to face the one substrate, on the side opposite to the fluid, a sealing section for bringing together the one substrate and the third substrate, and a predetermined gap formed among the one substrate, the third substrate and the sealing section.
    Type: Application
    Filed: July 2, 2012
    Publication date: January 17, 2013
    Inventors: Takeomi MORITA, Masataka Okamoto, Takahiko Muneyoshi, Shigeki Nishizawa, Katsumi Matsumoto
  • Patent number: 8279393
    Abstract: As shown in the figures, the main surface of the first substrate and the main surface of the second substrate are bent in the liquid crystal display device according to the present invention, where a sealing material is provided outside the display region and has a protrusion formed in at least one corner of the display region, and the distance between the side of the display region facing the protrusion and the sealing material is greater than the distance between the portion of the side and the sealing material where there is no protrusion.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: October 2, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Tetsuya Nagata, Takeharu Furusawa, Shigeki Nishizawa, Hitoshi Azuma, Susumu Sasaki, Masataka Okamoto
  • Publication number: 20120176563
    Abstract: The TFT substrate includes a pixel electrode and a common electrode laminated one on top of another via an insulating layer, one of the pixel electrode and the common electrode provided farther from the liquid crystal layer being formed into a plane shape, and another of the pixel electrode and the common electrode provided closer to the liquid crystal layer having slits formed therein, each of the plurality of slits having a closed end portion. The liquid crystal display panel further includes a reflection portion for reflecting light, the reflection portion being formed at a surface of the liquid crystal display panel on the illumination device side in a portion which overlaps, in plan view, the end portion of the each of the slits in the long-side direction and a vicinity thereof, and a part of an inner region of the each of the slits.
    Type: Application
    Filed: December 22, 2011
    Publication date: July 12, 2012
    Inventors: Masaya ADACHI, Osamu Itou, Shigeki Nishizawa
  • Patent number: 8164711
    Abstract: A liquid crystal display device which can make the surface brightness of an edge-light-type backlight uniform is provided. The liquid crystal display device includes a liquid crystal display panel and a backlight which radiates light to the liquid crystal display panel. The backlight includes a light guide plate which is arranged on a back side of the liquid crystal display panel, a light source arranged on an outer peripheral portion of a first main surface of the light guide plate which faces the liquid crystal display panel in an opposed manner, and a reflection sheet which is arranged on a back side of the light guide plate as viewed from the liquid crystal display panel. The light guide plate is made of a transparent resin having a refractive index of 1.53 or less.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: April 24, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Yasuhisa Shiraishi, Atsushi Tsuruoka, Akiyoshi Tobe, Shigeki Nishizawa, Toshihiro Yajima
  • Patent number: 8139177
    Abstract: In a liquid crystal display device having a liquid crystal display panel which includes a first substrate and a second substrate, a back plate is arranged on a first-substrate-side of the liquid crystal display panel, a first polarizer is arranged between the back plate and the first substrate, the first polarizer is adhered to the back plate, a face plate is arranged on a second-substrate-side of the liquid crystal display panel, a second polarizer is arranged between the face plate and the second substrate, and the second polarizer is adhered to the face plate.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: March 20, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Shigeki Nishizawa
  • Publication number: 20110255028
    Abstract: Provided is a liquid crystal display device which includes: a pair of transparent substrates which are arranged to face each other in an opposed manner with a liquid crystal layer sandwiched therebetween; a non-self-luminous display part having at least a light transmitting region which allows light to pass therethrough and a light shielding region which shields light; and a backlight part, wherein the transparent substrate arranged on a backlight part side includes a reflection film formed of a metal thin film in which an opening region corresponding to the light transmitting region is formed on a liquid crystal layer side of the transparent substrate on the backlight part side, and the backlight light incident on the opening region passes through the opening region, and the backlight light incident on a region where the reflection film is formed is reflected toward the backlight part side.
    Type: Application
    Filed: April 14, 2011
    Publication date: October 20, 2011
    Inventor: Shigeki NISHIZAWA
  • Publication number: 20110216268
    Abstract: A light guide plate is for reflecting incident light from an end surface thereof in an inside to obtain surface emission from a front surface thereof. The light guide plate includes protrusions and recesses formed on one of the front surface and a rear surface on an opposite side of the front surface. The protrusions and recesses are formed of a shape in which first mountain-range shapes each including a first ridge continuing along a first direction, which is a direction toward the inside from the end surface, and second mountain-range shapes each including a second ridge continuing along a second direction intersecting with the first direction are combined. Each first mountain-range shape includes a pair of first side surfaces on both sides of the first ridge. Each second mountain-range shape includes a pair of second side surfaces on both sides of the second ridge.
    Type: Application
    Filed: March 2, 2011
    Publication date: September 8, 2011
    Inventors: Yasuhisa Shiraishi, Atsushi Tsuruoka, Shigeki Nishizawa
  • Patent number: 7920223
    Abstract: A liquid crystal display panel formed by using a TFT substrate and a color filter substrate is polished to decrease the thickness thereof so that it can be curved. The liquid crystal display panel and various optical sheets are sandwiched between a frame forming a curved surface and a light guide plate forming a curved surface, to thereby form a curved surface. An upper polarizer plate and a lower polarizer plate are, respectively, sandwiched between the surface cover and the liquid crystal display panel, and between the liquid crystal display panel and the optical sheet, and are not adhered or are partly adhered to the liquid crystal display panel.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: April 5, 2011
    Assignees: Hitachi Displays, Ltd., Hitachi Display Devices, Ltd.
    Inventors: Shigeki Nishizawa, Nobuyuki Koganezawa, Fuimiyuki Sato
  • Publication number: 20110019129
    Abstract: A liquid crystal display panel formed by using a TFT substrate and a color filter substrate is polished to decrease the thickness thereof so that it can be curved. The liquid crystal display panel and various optical sheets are sandwiched between a frame forming a curved surface and a light guide plate forming a curved surface, to thereby form a curved surface. An upper polarizer plate and a lower polarizer plate are, respectively, sandwiched between the surface cover and the liquid crystal display panel, and between the liquid crystal display panel and the optical sheet, and are not adhered or are partly adhered to the liquid crystal display panel.
    Type: Application
    Filed: September 23, 2010
    Publication date: January 27, 2011
    Inventors: Shigeki Nishizawa, Nobuyuki Koganezawa, Fuimiyuki Sato
  • Patent number: 7847912
    Abstract: A liquid crystal display panel includes a TFT substrate and a color filter substrate respectively formed of a glass substrate. By housing the liquid crystal display panel in the inside of a frame having a curved surface, a predetermined curved surface is imparted to a display screen. Using a direct backlight having a plurality of fluorescent lamps, distances between the respective fluorescent lamps and the liquid crystal display panel are set to a fixed value. A diffusion plate has a curved surface substantially equal to the display screen. By mounting respective optical sheets on the diffusion plate, predetermined curved surfaces are imparted to the respective optical sheets. Due to such constitution, it is possible to realize a liquid crystal display device having a curved surface without using a complicated optical system.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: December 7, 2010
    Assignees: Hitachi Displays, Ltd., Hitachi Displays Devices, Ltd.
    Inventors: Shigeki Nishizawa, Nobuyuki Koganezawa, Fumiyuki Sato
  • Publication number: 20100231841
    Abstract: As shown in the figures, the main surface of the first substrate and the main surface of the second substrate are bent in the liquid crystal display device according to the present invention, where a sealing material is provided outside the display region and has a protrusion formed in at least one corner of the display region, and the distance between the side of the display region facing the protrusion and the sealing material is greater than the distance between the portion of the side and the sealing material where there is no protrusion.
    Type: Application
    Filed: March 10, 2010
    Publication date: September 16, 2010
    Inventors: Tetsuya NAGATA, Takeharu Furusawa, Shigeki Nishizawa, Hitoshi Azuma, Susumu Sasaki, Masataka Okamoto