Patents by Inventor Norio Tada

Norio Tada 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: 7924273
    Abstract: In making a contact determination between an object and a display screen, a display apparatus of the present invention is capable of adjusting a region on which to make a contact determination in response to the displayed image in a liquid crystal panel, so that the influence by the displayed image can be suppressed. Moreover, for simplifying the contact determination process, the display apparatus sets solid a region in the picked-up image that is not a target of the contact determination, with a predetermined gradation value.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: April 12, 2011
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Hiroki Nakamura, Takashi Nakamura, Hirotaka Hayashi, Norio Tada, Takayuki Imai
  • Patent number: 7773068
    Abstract: In order to improve accuracy in determining whether or not an object touches a display screen, a display device includes a display unit and a processor. The display unit includes an image display unit which displays an image on a display screen, an optical input unit which picks up an image of an object adjacent to the display screen and a capacitive coupling detector which detects a capacitive coupling to the object adjacent to the display screen. The processor determines that the object touches the display screen by using, and concurrently calculates the coordinates touched by the object by using the capacitive coupling detected by the capacitive coupling detector, and the image picked up by the optical input unit.
    Type: Grant
    Filed: April 2, 2007
    Date of Patent: August 10, 2010
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Takashi Nakamura, Takayuki Imai, Hirotaka Hayashi, Norio Tada, Hiroki Nakamura
  • Patent number: 7701448
    Abstract: A liquid crystal panel brightness controller notifies a backlight controller that an illuminance of ambient light is equal to or less than a threshold value. Upon notification, the backlight controller causes invisible light emitted, for example. The invisible light passes through a liquid crystal panel and is reflected by an imaging target and is received by photosensors. Accordingly, the decrease in the amount of the visible light received by photosensors is compensated. As a result, an image with a high S/N ratio is obtained.
    Type: Grant
    Filed: April 2, 2007
    Date of Patent: April 20, 2010
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Hiroki Nakamura, Takashi Nakamura, Hirotaka Hayashi, Norio Tada, Takayuki Imai
  • Patent number: 7655889
    Abstract: A display device has a predetermined display region and includes an array substrate equipped with a drive circuit, and a light sensor for measuring outside illuminance and a temperature sensor both installed on the array substrate. A control method for the display device includes using the light sensor to measure outside illuminance and using an output of the temperature sensor to correct an output of the light sensor, thereby adjusting luminance in the display region. The display device may further include an opposed substrate in opposition to the array substrate, a liquid crystal layer sandwiched between the two substrates to form the predetermined display region, and a backlight, thereby constituting a liquid crystal display device.
    Type: Grant
    Filed: May 23, 2007
    Date of Patent: February 2, 2010
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Takashi Nakamura, Hirotaka Hayashi, Norio Tada, Hiroki Nakamura
  • Publication number: 20090115760
    Abstract: In order to reduce a field-through voltage generated by switching elements, and to decrease a difference between the field-through voltages generated by the respective switching elements arranged on the same scanning line, a negative charge, which is leaked when an input switching element SWa is changed from ON to OFF, is cancelled by using a positive charge discharged by changing a field-through compensation switch from ON to OFF.
    Type: Application
    Filed: November 19, 2007
    Publication date: May 7, 2009
    Inventors: Hirotaka HAYASHI, Takashi Nakamura, Norio Tada, Takayuki Imai, Hiroki Nakamura
  • Patent number: 7463297
    Abstract: To enable acquisition of image data in multiple tone levels in a short capturing time, a liquid crystal display device 1 includes a photodiode having sensitivity R, a capacitor having capacitance C and configured to store a charge in response to an electric signal converted by the photodiode in a state where an initial voltage V is applied thereto, a SRAM configured to retain binary data which indicate as to whether or not an amount of charge stored in the capacitor is equal to or above a threshold voltage Vth, an image capturing control unit 5 configured to generate pixel data in multiple tone levels based on the binary data outputted from the SRAM of a plurality of adjacent pixels. Here, at least any one value of R, V, C, and Vth in each of the pixels is set to a different value from relevant values of other adjacent pixels.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: December 9, 2008
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Masahiro Yoshida, Takashi Nakamura, Hirotaka Hayashi, Norio Tada, Jun Hirota, Masaki Kinoshita
  • Publication number: 20080252617
    Abstract: In making a contact determination between an object and a display screen, a display apparatus of the present invention is capable of adjusting a region on which to make a contact determination in response to the displayed image in a liquid crystal panel, so that the influence by the displayed image can be suppressed. Moreover, for simplifying the contact determination process, the display apparatus sets solid a region in the picked-up image that is not a target of the contact determination, with a predetermined gradation value.
    Type: Application
    Filed: October 5, 2007
    Publication date: October 16, 2008
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Hiroki Nakamura, Takashi Nakamura, Hirotaka Hayashi, Norio Tada, Takayuki Imai
  • Patent number: 7361947
    Abstract: A photoelectric conversion element includes a semiconductor layer including a pair of p+ regions in which p-type impurities are doped, and a p? region which is disposed between the p+ regions and has a lower p-type impurity concentration than the p+ regions. A gate electrode is formed over the p? region via a gate insulation film, thus, a p-MOS structure is formed. A width of the gate electrode is less than a width of the p? region. A p? region, which is a portion of the p? region and is located immediately below the gate electrode, forms a light receiving layer, and p? regions, which are portions of the p? region and are located away from below the gate electrode, form LDD regions. The photoelectric conversion element is fabricated on the same substrate as a thin-film transistor for a driving circuit, thereby constructing a display device with an input function.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: April 22, 2008
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventor: Norio Tada
  • Publication number: 20080018612
    Abstract: In order to improve accuracy in determining whether or not an object touches a display screen, a display device includes a display unit and a processor. The display unit includes an image display unit which displays an image on a display screen, an optical input unit which picks up an image of an object adjacent to the display screen and a capacitive coupling detector which detects a capacitive coupling to the object adjacent to the display screen. The processor determines that the object touches the display screen by using, and concurrently calculates the coordinates touched by the object by using the capacitive coupling detected by the capacitive coupling detector, and the image picked up by the optical input unit.
    Type: Application
    Filed: April 2, 2007
    Publication date: January 24, 2008
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Takashi NAKAMURA, Takayuki Imai, Hirotaka Hayashi, Norio Tada, Hiroki Nakamura
  • Publication number: 20080001070
    Abstract: A display device has a predetermined display region and includes an array substrate equipped with a drive circuit, and a light sensor for measuring outside illuminance and a temperature sensor both installed on the array substrate. A control method for the display device includes using the light sensor to measure outside illuminance and using an output of the temperature sensor to correct an output of the light sensor, thereby adjusting luminance in the display region. The display device may further include an opposed substrate in opposition to the array substrate, a liquid crystal layer sandwiched between the two substrates to form the predetermined display region, and a backlight, thereby constituting a liquid crystal display device.
    Type: Application
    Filed: May 23, 2007
    Publication date: January 3, 2008
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Takashi Nakamura, Hirotaka Hayashi, Norio Tada, Hiroki Nakamura
  • Publication number: 20070296688
    Abstract: A liquid crystal panel brightness controller notifies a backlight controller that an illuminance of ambient light is equal to or less than a threshold value. Upon notification, the backlight controller causes invisible light emitted, for example. The invisible light passes through a liquid crystal panel and is reflected by an imaging target and is received by photosensors. Accordingly, the decrease in the amount of the visible light received by photosensors is compensated. As a result, an image with a high S/N ratio is obtained.
    Type: Application
    Filed: April 2, 2007
    Publication date: December 27, 2007
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Hiroki Nakamura, Takashi Nakamura, Hirotaka Hayashi, Norio Tada, Takayuki Imai
  • Publication number: 20070229424
    Abstract: In order to maintain display performance of a display device, the display device includes an optical sensor disposed across three sub-pixels of red, green and blue colors in each pixel. This configuration makes it possible to adjust the aperture ratios of the respective sub-pixels, and thus to make the amount of light passing through the respective sub-pixels closer to one another. In other words, the white balance can be maintained.
    Type: Application
    Filed: December 4, 2006
    Publication date: October 4, 2007
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Hirotaka Hayashi, Yoshitaka Yamada, Takashi Nakamura, Norio Tada, Hiroki Nakamura
  • Patent number: 7265740
    Abstract: In a manufacturing process of a display device, hydrogenation in an I layer of photodiodes D1 and D2 is progressed less than that in a channel portion of a pixel TFT, and a defect density due to dangling bonds not terminated in the I layer of the photodiodes D1 and D2 is made higher than a defect density in the channel portion of the pixel TFT. Thus, while suppressing a leakage current of the pixel TFT, the sensitivity of the photodiodes D1 and D2 to light is improved. Moreover, a gate electrode is provided above an i region of a pin-type optical sensor diode with an insulating film interposed therebetween. Thus, a gate voltage can control a threshold of a bias voltage when a current starts to flow into the optical sensor diode and a leakage current is prevented from flowing into the optical sensor diode.
    Type: Grant
    Filed: August 7, 2003
    Date of Patent: September 4, 2007
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Masahiro Tada, Takashi Nakamura, Norio Tada, Masahiro Yoshida
  • Publication number: 20070182723
    Abstract: A display device includes a plurality of scan lines and each of a plurality of signal lines which are provided intersecting to each other; a plurality of display sections each disposed at an intersection of each of the plurality of scan lines and each of the plurality of signal lines; and a plurality of photo receivers each provided corresponding to each of the plural display sections so that the number of the disposed photo receivers would monotonically increase as the sizes of the photo receivers increase.
    Type: Application
    Filed: January 17, 2007
    Publication date: August 9, 2007
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Takayuki Imai, Takashi Nakamura, Hirotaka Hayashi, Norio Tada, Hiroki Nakamura, Miyuki Ishikawa, Masahiro Yoshida
  • Patent number: 7164164
    Abstract: A display device has display elements provided inside of pixels, each being formed in vicinity of intersections of signal lines and scanning lines aligned in matrix form; and photoelectric conversion elements, wherein each of the photoelectric conversion elements includes first, second and third semiconductor regions disposed adjacently in sequence in parallel to a surface of a substrate; a first electrode connected to the first semiconductor region; and a second electrode connected to the third semiconductor region, the first semiconductor region being formed by injecting a first conductive impurity in first dose amount; the third semiconductor region being formed by injecting a second conductive impurity in second dose amount; and the second semiconductor region being formed by injecting the first conductive impurity in third dose amount less than the first dose amount.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: January 16, 2007
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Takashi Nakamura, Norio Tada, Masahiro Tada
  • Patent number: 7148870
    Abstract: A flat-panel display device comprises display pixels PX, pixel switches which capture a video signal supplied externally, as voltages to be applied to the display pixels PX, static memory modules which hold the voltages applied from the pixel switches, and connection controllers which control electrical connections between the display pixels PX and the static memory modules. Particularly, each connection controller includes a thin film transistor having a dual-gate structure, which is connected between one display pixel PX and one memory module.
    Type: Grant
    Filed: January 29, 2003
    Date of Patent: December 12, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Norio Tada
  • Publication number: 20060138421
    Abstract: A photoelectric conversion element includes a semiconductor layer including a pair of p+ regions in which p-type impurities are doped, and a p? region which is disposed between the p+ regions and has a lower p-type impurity concentration than the p+ regions. A gate electrode is formed over the p? region via a gate insulation film, thus, a p-MOS structure is formed. A width of the gate electrode is less than a width of the p? region. A p? region, which is a portion of the p? region and is located immediately below the gate electrode, forms a light receiving layer, and p? regions, which are portions of the p? region and are located away from below the gate electrode, form LDD regions. The photoelectric conversion element is fabricated on the same substrate as a thin-film transistor for a driving circuit, thereby constructing a display device with an input function.
    Type: Application
    Filed: December 27, 2005
    Publication date: June 29, 2006
    Inventor: Norio Tada
  • Patent number: 7061019
    Abstract: A circuit array substrate is provided with thin-film transistors 4 and 5 and PIN diode 6 formed on insulation substrate 3. Active layer 11 and photo-electric sensor portion 21 are made of poly-silicon films. Impurities are doped into active layer 11 and photo-electric sensor portion 21 in the same process chamber, if necessary, to make their impurity concentrations different from each other. Thin-film transistors 4 and 5 with prescribed characteristics and PIN diode 6 with improved photosensitivity can be simultaneously, easily manufactured on insulation substrate 3 with a lesser number of processes.
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: June 13, 2006
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Arichika Ishida, Masayoshi Fuchi, Yuki Matsuura, Norio Tada
  • Publication number: 20050260300
    Abstract: The present invention relates to a fermented soybean paste-like foodstuff, which exhibits thickness, strong umami taste and richness and which does not contain sodium chloride and a method of producing the same. The present invention also relates to a food material or a seasoning containing a fermented soybean paste-like foodstuff produced by the method proffered by the present invention.
    Type: Application
    Filed: March 24, 2005
    Publication date: November 24, 2005
    Applicant: Ajinomoto Co., Inc.
    Inventors: Norio Tada, Nobutoshi Matsumoto, Michinari Sakurai, Yasushi Nishimura, Kyoko Koibuchi, Hideki Okamura
  • Publication number: 20050128331
    Abstract: To enable acquisition of image data in multiple tone levels in a short capturing time, a liquid crystal display device 1 includes a photodiode having sensitivity R, a capacitor having capacitance C and configured to store a charge in response to an electric signal converted by the photodiode in a state where an initial voltage V is applied thereto, a SRAM configured to retain binary data which indicate as to whether or not an amount of charge stored in the capacitor is equal to or above a threshold voltage Vth, an image capturing control unit 5 configured to generate pixel data in multiple tone levels based on the binary data outputted from the SRAM of a plurality of adjacent pixels. Here, at least any one value of R, V, C, and Vth in each of the pixels is set to a different value from relevant values of other adjacent pixels.
    Type: Application
    Filed: November 30, 2004
    Publication date: June 16, 2005
    Applicant: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Masahiro Yoshida, Takashi Nakamura, Hirotaka Hayashi, Norio Tada, Jun Hirota, Masaki Kinoshita