Patents by Inventor Masaya Adachi

Masaya Adachi 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).

  • Publication number: 20110007243
    Abstract: Provided is a liquid crystal display device including a liquid crystal panel including: a first substrate on which a plurality of drain lines and a plurality of gate lines are formed, the plurality of gate lines crossing the plurality of drain lines; a second substrate which is arranged opposite to the first substrate via a liquid crystal; and an optical anisotropic film formed on a side of one of the first substrate and the second substrate, the side not being in contact with the liquid crystal; in which a region surrounded by the plurality of drain lines and the plurality of gate lines serves as a pixel region, in which the optical anisotropic film is formed of molecules which chemically bond to one of the first substrate and the second substrate in an aligned state.
    Type: Application
    Filed: June 3, 2010
    Publication date: January 13, 2011
    Inventors: Jun Tanaka, Miharu Otani, Masaya Adachi, Takato Hiratsuka
  • Publication number: 20100309110
    Abstract: A light unit which includes a plurality of light-emitting diode (LED) light sources arranged in parallel, a light-guiding member arranged on said LED light sources, a light reflecting part for reflecting light from said LED light sources forward, a light diffusion part for outgoing light from the surface of said light-guiding member to outside, and an optical path changing part arranged above said light-diffusion part, wherein a side of said light-guiding member that faces said light diffusion part is flat.
    Type: Application
    Filed: August 17, 2010
    Publication date: December 9, 2010
    Inventors: Masaya ADACHI, Ikuo HIYAMA, Makoto TSUMURA, Shusuke ENDO
  • Patent number: 7837343
    Abstract: An illuminating device includes a light-condensing sheet, a light-emitting portion, and a control unit. The light-condensing sheet includes a plurality of lenses each with a light-condensing function ranged on a light transmittance substrate. The light-emitting portion is opposed to the light-condensing sheet and includes light-emitting areas with respective dimensions. The control unit switches a luminous state of the light-emitting area to a non-luminous state or vice versa. A display device is provided with the illuminating device described above.
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: November 23, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Toshinari Shibasaki, Hideo Homma, Katsusuke Shimazaki, Masaya Adachi, Sukekazu Aratani
  • Publication number: 20100289989
    Abstract: An optical element is arranged in such a manner that a screen thereof can be hardly observed from a predetermined direction, and a deterioration of an image quality caused by moire does not occur. The optical element is constituted by a first polarizing layer, a second polarizing layer, and a liquid crystal layer arranged between these two polarizing layers. In the optical element, absorption axes of the first polarizing layer and the second polarizing layer are located parallel to each other; the liquid crystal layer is made of hybrid-aligned discotic liquid crystal; and an alignment axis of the liquid crystal layer is located parallel to, or perpendicular to both absorption axes of the first polarizing layer and of the second polarizing layer.
    Type: Application
    Filed: July 28, 2010
    Publication date: November 18, 2010
    Inventors: Masaya ADACHI, Osamu Itou, Shinichi Komura
  • Patent number: 7830086
    Abstract: A light emitting device includes an organic light emitting layer disposed on a substrate and first and second electrodes between which the organic light emitting layer is disposed on the substrate. The second electrode is formed on the opposite side to the substrate of the organic light emitting layer. A buffer layer is disposed between the second electrode and the organic light emitting layer and is mainly made of oxide having a smaller quantity of oxygen generated in decomposition upon formation of the buffer layer than that of oxygen generated in decomposition upon formation of the second electrode. Further, the substrate is made of metal.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: November 9, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Masaya Adachi, Hajime Murakami
  • Patent number: 7830082
    Abstract: An active matrix type organic light emitting diode display serving as a bottom emission type device coupling out emission of an organic electroluminescence layer from a substrate where thin film transistors are formed or as a top emission type device coupling out the emission on the opposite side to the substrate. In a suitable layer (102, 106, 107) in each device, an insulating film containing SiO is formed. The insulating film is porous with nano pores in the film. The porous insulating film is controlled as to film density, film refractive index, nano pore diameter in film, average nano pore diameter in film and maximum nano pore diameter in film so that the refractive index is lower than that of a transparent electrode or a transparent substrate of the display holding the organic electroluminescence layer therebetween, and nano pores are present in the film.
    Type: Grant
    Filed: July 19, 2007
    Date of Patent: November 9, 2010
    Assignee: Hitachi Displays, Ltd.
    Inventors: Jun Tanaka, Kiyoshi Ogata, Masaya Adachi, Miharu Otani
  • Publication number: 20100277669
    Abstract: Provided is an illuminating device (1) including: a light source (10); a light-guide-plate (20) received light from the light source at a side surface of the light-guide-plate and outputting from a front surface of the light-guide-plate; and reflector (30) disposed on a rear surface side of the light-guide-plate. The light-guide-plate outputs light having a peak of a luminance at an output angle inclined with respect to a normal line of the front surface. A part of the light output at the angle is made obliquely incident on the front surface at an angle smaller than a critical angle to be reflected in the light-guide-plate and, then, when the part of the light obliquely travels to the rear surface and to return to the front surface, polarized light components are converted so as to contain more p-polarized light components than s-polarized, and the part of the light is output.
    Type: Application
    Filed: April 29, 2010
    Publication date: November 4, 2010
    Inventors: Masaya Adachi, Tatsuya Sugita, Chieko Araki
  • Publication number: 20100259708
    Abstract: Provided is a liquid crystal display device including: a liquid crystal cell (15) including a first substrate (110), a second substrate (111), and a liquid crystal layer (160) sealed between the first substrate and the second substrate; a first polarization member (210) for transmitting light in a predetermined polarization direction; and a second polarization member (220) for transmitting light in another polarization direction which is orthogonal to the predetermined polarization direction. At least one of the first polarization member and the second polarization member includes a multilayer thin film polarizer including a plurality of thin film polarizers which are stacked so that transmission axes of the plurality of thin film polarizers are aligned. The multilayer thin film polarizer includes a thin film polarizer formed in a predetermined film thickness by coating with dye molecules which are aligned by a shear stress.
    Type: Application
    Filed: April 13, 2010
    Publication date: October 14, 2010
    Inventors: Takato HIRATSUKA, Masaya Adachi, Miharu Otani, Jun Tanaka, Chie Yoshizawa
  • Patent number: 7812515
    Abstract: A self light emitting display device having high level of the external coupling efficiency and high grade image presentation as no optical cross-talk or blur can be obtained by a new light-emitting element. The device is constructed as follows. A plurality of picture elements, each of which picture elements has an organic layer composing light emitting areas, a transparent electrode and a reflective electrodes, are formed on a substrate. Between the picture elements, a bank which has a tilted reflective surface is formed so that the light emitting area is surrounded by the bank wherein the transparent optical waveguide layer is formed as optically isolated for each of the picture elements.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: October 12, 2010
    Assignee: Hitachi Displays, Ltd.
    Inventors: Masaya Adachi, Kazutaka Tsuji, Hajime Murakami, Etsuko Nishimura
  • Publication number: 20100231826
    Abstract: Provided is a liquid crystal display device with a backlight including a light guide plate. The light guide plate includes, a reflective polarizing plate for transmitting a P-polarized component and reflecting an S-polarized component, a reflector for reflecting the S-polarized component reflected by the reflective polarizing plate, and a polarization converting member for converting the S-polarized component to a P-polarized component. The reflective polarizing plate and the reflector are tilted at an angle such that reflecting surfaces thereof are not perpendicular to four sides of the liquid crystal display panel and are disposed such that the S-polarized component contained in a main component of light emitted from the light sources is reflected by the reflector. This keeps small the size of the liquid crystal display device and still improves reuse efficiency of the light emitted from the light sources.
    Type: Application
    Filed: February 19, 2010
    Publication date: September 16, 2010
    Inventors: Osamu ITOU, Tatsuya Sugita, Masaya Adachi
  • Publication number: 20100220260
    Abstract: A liquid crystal display device includes a liquid crystal display panel, a plurality of groups of light source units, a plurality of light guide plates, and a light source control circuit configured to control light amounts of the light source units. The plurality of light guide plates are configured to transmit light from the plurality of groups of the light source units. In each of the plurality of light guide plates, areas from which the transmitted light exiting toward the liquid crystal display panel differ from one another. One of the plurality of groups of the light source units paired with one of the plurality of light guide plates includes at least two light source units that are controlled in light amount independently. A number of the areas of the one of the plurality of light guide plates is at least a number of the light source units thereof.
    Type: Application
    Filed: February 19, 2010
    Publication date: September 2, 2010
    Inventors: Tatsuya Sugita, Masaya Adachi, Shinichiro Oka
  • Patent number: 7784986
    Abstract: A light unit which includes a plurality of light-emitting diode (LED) light sources arranged in parallel, a light-guiding member arranged on said LED light sources, a light reflecting part for reflecting light from said LED light sources forward, a light diffusion part for outgoing light from the surface of said light-guiding member to outside, and an optical path changing part arranged above said light-diffusion part, wherein a side of said light-guiding member that faces said light diffusion part is flat.
    Type: Grant
    Filed: April 19, 2005
    Date of Patent: August 31, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Masaya Adachi, Ikuo Hiyama, Makoto Tsumura, Shusuke Endo
  • Patent number: 7781962
    Abstract: Light-emitting devices (24) and light-emitting displays (1) for realizing bright display by allowing light emitted from an emissive layer (100) to efficiently contribute to a display. Polarization separators (500) are arranged between the emissive layer (100) and a phase plate (700). In the light of a wavelength range which includes a part or all of a light-emission wavelength range of the emissive layer and is narrower than a visible wavelength range and is directed from the emissive layer side to the polarization separators side, the polarization separators (500) reflect circularly polarized light components which are converted into linearly polarized light that is absorbed by the polarizer (600) due to the operation of the phase plate and transmit the other light.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: August 24, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Masaya Adachi, Yoshiyuki Kaneko, Sukekazu Aratani, Shingo Ishihara
  • Patent number: 7742137
    Abstract: A liquid crystal display device comprising a pair of substrates, a liquid crystal display panel having a liquid crystal layer positioned between the substrates, a transparent protective plate arranged on a front surface side of the display panel, and an optically transparent layer between the display panel and the protective plate, and wherein the protective plate includes fine concavity and convexity configurations on at least a surface thereof toward the display panel.
    Type: Grant
    Filed: August 11, 2006
    Date of Patent: June 22, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Masaya Adachi, Makiko Sugibayashi, Tetsuya Ohshima, Katsumi Kondo, Hiroshi Sasaki
  • Patent number: 7732809
    Abstract: The present invention provides light emitting displays which produce a bright image by efficiently emitting light radiated from a light-emitting thin-film layer to the viewer side, and also produces a high-quality image of high contrast ratio and changing in color to a limited extent over a wide viewing angle range even in a bright atmosphere.
    Type: Grant
    Filed: August 10, 2004
    Date of Patent: June 8, 2010
    Assignee: Hitachi Displays, Ltd.
    Inventors: Masaya Adachi, Osamu Itou
  • Patent number: 7733449
    Abstract: A liquid crystal display of a vertical alignment (VA) mode using a circular polarization plate is provided which can reduce light leak as observed along an oblique direction and achieve a high contrast ratio. The VA mode uses a liquid crystal layer of vertical alignment in an initial alignment state. A film having generally isotropic optical characteristics in an omnidirection is used as a protective film, on a liquid crystal cell side, of first and second polarization plates disposed outside the liquid crystal cell, and first and fourth retardation films have an Nz coefficient smaller than 1.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: June 8, 2010
    Assignee: Hitachi Displays, Ltd.
    Inventors: Shinichiro Oka, Masaya Adachi, Shinichi Komura, Ikuo Hiyama
  • Publication number: 20100135040
    Abstract: A self light emitting display device having high level of the external coupling efficiency and high grade image presentation as no optical cross-talk or blur can be obtained by a new light-emitting element. The device is constructed as follows. A plurality of picture elements, each of which picture elements has an organic layer composing light emitting areas, a transparent electrode and a reflective electrodes, are formed on a substrate. Between the picture elements, a bank which has a tilted reflective surface is formed so that the light emitting area is surrounded by the bank wherein the transparent optical waveguide layer is formed as optically isolated for each of the picture elements.
    Type: Application
    Filed: December 4, 2009
    Publication date: June 3, 2010
    Applicant: HITACHI DISPLAYS, LTD.
    Inventors: Masaya ADACHI, Kazutaka TSUJI, Hajime MURAKAMI, Etsuko NISHIMURA
  • Publication number: 20100134454
    Abstract: In an organic electroluminescent light emitting display device comprising a plurality of pixels each of which includes an organic electroluminescent element emitting light by a current supplied thereto, a plurality of active elements including a first active element which acquires a data signal and a second active element which regulates the current supplied to the organic electroluminescent element in accordance with the data signal, and a capacitive element storing the data signal, the present invention utilizes a part of the capacitive element arranged in one of the pixels for a light shielding member which shields the plurality of active elements arranged the one of the pixels from light emitted by the organic electroluminescent element arranged therein or another pixel adjacent thereto so as to suppress image quality deterioration and smear appearing in an image display area of the organic electroluminescent light emitting display device.
    Type: Application
    Filed: February 2, 2010
    Publication date: June 3, 2010
    Inventors: Toshihiro Sato, Genshiro Kawachi, Yoshiro Mikami, Masaya Adachi
  • Publication number: 20100123854
    Abstract: An illuminating device includes: a light guide plate for outputting light, which enters the light guide plate from one side surface, from a front surface of the light guide plate; an optical sheet disposed on the front surface of the light guide plate; and a reflection sheet disposed on a rear surface of the light guide plate. The optical sheet includes prism arrays which are provided on a surface of the optical sheet opposite to the light guide plate, and each of which has at least two inclined surfaces and a ridge line extending in one direction. The light guide plate changes a polarization state of light that is reflected by the surface of the optical sheet, is transmitted through the light guide plate, is reflected by the reflection sheet, is transmitted through the light guide plate again, and then enters the optical sheet.
    Type: Application
    Filed: November 18, 2009
    Publication date: May 20, 2010
    Inventors: Masaya ADACHI, Tatsuya Sugita, Chieko Araki
  • Publication number: 20100072880
    Abstract: The present invention provides light emitting displays which produce a bright image by efficiently emitting light radiated from a light-emitting thin-film layer to the viewer side, and also produces a high-quality image of high contrast ratio and changing in color to a limited extent over a wide viewing angle range even in a bright atmosphere.
    Type: Application
    Filed: December 2, 2009
    Publication date: March 25, 2010
    Applicant: HITACHI DISPLAYS, LTD.
    Inventors: Masaya ADACHI, Osamu ITOU