Patents Assigned to Epson Imaging Device Corporation
  • Patent number: 7701533
    Abstract: An electro-optical device includes: a plurality of display pixels each of which has two Red sub-pixels, two Green sub-pixels, one Blue sub-pixel, and one transparent sub-pixel; and a colored layer which is partially formed on the Red, Green, and Blue sub-pixels. In the electro-optical device, uncolored portions are formed in parts of the Red and Green sub-pixels where the colored layer is not formed.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: April 20, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventors: Kazu Kobayashi, Chihiro Tanaka, Masahiro Horiguchi, Toshinori Uehara, Hideki Kaneko, Shinichiro Tanaka
  • Patent number: 7697082
    Abstract: A method of manufacturing an array substrate for a liquid crystal panel includes forming a lower conductive film above a circuit layer. A lower display electrode is formed using the lower conductive film in a display region and a lower capacitor electrode of a capacitor is formed using the lower conductive film in a peripheral region which is external to the display region. The method of manufacturing includes forming an upper conductive film above the lower display electrode and the lower capacitor electrode. An upper display electrode is formed using the upper conductive film in the display region and an upper capacitor electrode of the capacitor is formed using the upper conductive film in the peripheral region.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: April 13, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventor: Hiroshi Matsuda
  • Patent number: 7697204
    Abstract: An electrooptic device includes: a display panel for displaying images; an illumination system for applying light to the display panel; a polarizing-axis control unit disposed between the illuminating system and the display panel, the control unit allowing light having a first polarizing axis of the light emitted from the illuminating system to pass through, and changing part of the light from the illuminating system into light with a second polarizing axis that is substantially orthogonal to the first polarizing axis; a lens disposed between the polarizing-axis control unit and the display panel, the lens including a plurality of linear lens patterns directing the light with the first polarizing axis and the light with the second polarizing axis separated by the polarizing-axis control unit into specified directions; a first polarizing unit disposed between the illumination system and the lens; and a second polarizing unit disposed between the display panel and the lens.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: April 13, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventor: Nobuo Sugiyama
  • Publication number: 20100085335
    Abstract: An electro-optical device includes a plurality of scan lines, a plurality of data lines, a plurality of pixels respectively provided at intersections between the plurality of scan lines and the plurality of data lines, and a scan line drive circuit that applies a selection voltage to the scan lines in a predetermined sequence. The scan line drive circuit is composed of a first scan line drive circuit disposed at one side of the scan line and a second scan line drive circuit disposed at the other side of the scan line. The first scan line drive circuit applies the selection voltage to some of the scan lines, and the second scan line drive circuit applies the selection voltage to the remaining scan lines.
    Type: Application
    Filed: September 16, 2009
    Publication date: April 8, 2010
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventor: Tomotoshi KATO
  • Patent number: 7692734
    Abstract: Provided is a liquid crystal device including: a liquid crystal panel which includes first and second substrates supporting a liquid crystal layer in a sandwich manner and a sealing material disposed between the first and second substrate to seal the liquid crystal layer, and on which illumination light is irradiated from the rear side thereof; an optical plate disposed in the front side of the liquid crystal panel; and a control element that controls a display status of an image displayed on the liquid crystal panel, wherein: the liquid crystal panel includes a light receiving element that receives ambient light; and the light receiving element is disposed in a position where at least a portion of a light receiving surface thereof does not overlap the optical plate when seen from a plan view.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: April 6, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventors: Shin Fujita, Yutaka Kobashi, Shin Koide, Tomoyuki Ito
  • Publication number: 20100079693
    Abstract: A lateral electric field mode liquid crystal device comprising: a first substrate having pixel electrodes and common electrodes which are provided on one surface thereof; a second substrate disposed so as to face that surface of the first substrate with a predetermined distance therebetween; a liquid crystal layer sandwiched between the first substrate and the second substrate; and a loop-shaped sealing member disposed so as to surround the liquid crystal layer, with the liquid crystal device driving the liquid crystal layer by an electric field generated between the pixel electrodes and the common electrodes.
    Type: Application
    Filed: August 12, 2009
    Publication date: April 1, 2010
    Applicant: Epson Imaging Devices Corporation
    Inventors: Shuhei YOSHIDA, Shinichiro TANAKA
  • Publication number: 20100079712
    Abstract: A liquid crystal display panel includes: a pair of substrates which are opposed to each other; and a liquid crystal layer which is interposed between the pair of substrates, wherein one of the pair of substrates is provided with a plurality of scanning lines and a plurality of signal lines which are arranged in a matrix shape in a display area, lower electrodes which are each formed in each of sub-pixel areas partitioned by the plurality of scanning lines and the plurality of signal lines, an insulating film which is formed in the display area so as to cover the lower electrodes, upper electrodes which are formed in the display area through the insulating film and each have a plurality of slits in each of the sub-pixel area, and an alignment film which is formed on the upper electrodes and slit-shaped openings close to the liquid crystal layer, wherein the other of the pair of substrates is provided with light-shielding films which are formed at locations overlapping with the scanning lines and the signal lin
    Type: Application
    Filed: July 31, 2009
    Publication date: April 1, 2010
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventors: Shinichiro TANAKA, Yasuhiro NAKANISHI
  • Publication number: 20100079694
    Abstract: Provided is a lateral electric field mode liquid crystal device including: a first substrate; a second substrate; a liquid crystal layer and pixel electrodes and common electrodes. A lateral electric field mode liquid crystal device drives the liquid crystal layer by an electric field generated between the pixel electrodes and the common electrodes, a light shielding layer is formed on a surface of the second substrate disposed close to the liquid crystal layer. A coloring layer is also formed so as to overlap with the pixel electrodes. An overcoat layer protects the coloring layer, and an alignment film is formed. An electrostatic shielding layer is formed of a transparent conductive material on a surface of the overcoat layer.
    Type: Application
    Filed: August 12, 2009
    Publication date: April 1, 2010
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventors: Shuhei YOSHIDA, Shinichiro TANAKA, Joji NISHIMURA, Koji YOSHIDA, Keiji TAKIZAWA, Masakatsu HIGA
  • Patent number: 7688408
    Abstract: There is provided a liquid crystal device, wherein a liquid crystal layer is interposed between a first substrate and a second substrate, and at least a display pixel corresponding to a colored region of a color from blue to green in a visible light region of which the color varies depending on a wavelength is included, wherein at least one of the first substrate and the second substrate has a spacer which defines the thickness of the liquid crystal layer and an alignment film which is subjected to a rubbing process in a predetermined direction, and wherein a relative positional relationship between the spacer and the display pixel is defined such that a region of the alignment film, which is not subjected to the rubbing process due to existence of the spacer at the time of the rubbing process, is positioned in the display pixel corresponding to the colored region of the color from blue to green.
    Type: Grant
    Filed: September 18, 2006
    Date of Patent: March 30, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventor: Ichiro Murai
  • Publication number: 20100073313
    Abstract: An input device which includes a light-transmissive touch panel, a phase difference plate disposed on the opposite side to an input operation surface of the touch panel, a ¼ wavelength plate disposed on the side of the input operation surface of the touch panel, and a polarizing plate on the touch panel side, which is disposed on the ¼ wavelength plate toward the input operation surface of the touch panel, wherein a ratio R1 (450 nm)/R1 (590 nm) of the phase difference value R1 (450 nm) for the phase difference plate at a wavelength of 450 nm to the phase difference value R1 (590 nm) for the phase difference plate at a wavelength of 590 nm is greater than a ratio R0 (450 nm)/R0 (590 nm) of the phase differences value R0 (450 nm) for the ¼ wavelength plate at a wavelength of 450 nm to the phase difference value R0 (590 nm) for the ¼ wavelength plate at a wavelength of 590 nm, the phase difference value R1 (590 nm) for the phase difference plate at a wavelength of 590 nm is smaller than the phase difference val
    Type: Application
    Filed: August 25, 2009
    Publication date: March 25, 2010
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventor: Chiyoaki IIJIMA
  • Publication number: 20100066646
    Abstract: A dual-display liquid crystal display device concurrently displays two images so that the two images can be identified from two different viewing directions by including sub-pixel areas each having therein a first storage capacitor section extending along a scanning line and a second storage capacitor section extending along a signal line, and further, makes the characteristics of brightness relative to a viewing angle associated with the two different viewing directions be line-symmetric with each other. The dual-display liquid crystal display device realizes an increased aperture by locating each storage capacitor section within a light-shielding area and by having rectangular display regions.
    Type: Application
    Filed: July 17, 2009
    Publication date: March 18, 2010
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventor: Akio Ota
  • Publication number: 20100059293
    Abstract: A resistive film type input device includes: a resistive film which is formed on a surface of the first insulating substrate opposed to the second insulating substrate; feeding electrodes which apply a voltage to the resistive film on the first insulating substrate; a detecting electrode films which are formed on a surface of the second insulating substrate are in an electrically floating state; and a potential detecting unit which detects a potential of a contact location of the resistive film through the detecting electrode film contacted to the resistive film among the detecting electrode films by pressing against.
    Type: Application
    Filed: June 18, 2009
    Publication date: March 11, 2010
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventor: Shoji HINATA
  • Publication number: 20100060603
    Abstract: A touch panel includes: a first substrate; a second substrate disposed to face the first substrate; an annular seal material that adheres peripheries of the first substrate and the second substrate to each other so as to set a gap between the first substrate and the second substrate; first seal portions that adhere corner portions of the first substrate and the second substrate through the seal material; and second seal portions that are in connection with the first seal portions and adhere side portions of the first substrate and the second substrate through the seal material. Each of the first seal portions has a thickness which is smaller than each of the second seal portions so that the substrate gap is set to be small.
    Type: Application
    Filed: September 8, 2009
    Publication date: March 11, 2010
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventors: Takeshi KURASHIMA, Koichi MIYASAKA
  • Patent number: 7675499
    Abstract: In a display device with a buffer amplifier which receives an input signal on a positive input terminal, has an output terminal connected to a negative input terminal, and outputs a stabilized output signal, a switch for connecting the positive input terminal and the output terminal is provided. By switching the switch ON, the output of the buffer amplifier is set close to the input.
    Type: Grant
    Filed: August 15, 2006
    Date of Patent: March 9, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventors: Michiru Senda, Hiroyuki Horibata
  • Patent number: 7675589
    Abstract: A liquid crystal device includes adjacent sub pixels with adjacent reflection regions and adjacent transmission regions. The device also includes a liquid crystal layer thickness adjusting layer that is continuously formed between two of the sub pixels and provided at least in reflection region. The liquid crystal layer thickness adjusting layer is disposed between the first sub pixel and the second sub pixel having a groove extending from the transmission region and along a boundary between the first and second sub pixels. The color filter for the first sub pixel transmits a color light having the lowest visibility corresponds. Further, a spacer is optionally disposed on an extension line of the groove or at a location adjacent to the groove.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: March 9, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventor: Hayato Kurasawa
  • Patent number: 7675349
    Abstract: An unnecessary through current is suppressed and insufficiency of an output electric potential and increase in power consumption are suppressed in a power supply circuit using a charge pump method. In order to suppress a reduction in an output electric potential VPP as well as suppressing transient through currents I1 and I2 when a clock DCCLK is inverted, resistances R1 of a wiring 11, R2 of a wiring 12 and R4 of a wiring 14 are set so as to satisfy relations R4>R1 and R4>R2. That is, the through currents I1 and I2 can be suppressed by reducing the resistances R1 and R2 so that electric potentials V1 and V2 are quickly inverted when the clock DCCLK is inverted. Also, the through current I1 can be suppressed to suppress the reduction in the positive output electric potential VPP by setting the resistance R4 to be larger than either of the resistances R1 and R2.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: March 9, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventor: Hiroyuki Horibata
  • Publication number: 20100053936
    Abstract: An electro-optical device includes an electro-optical panel, a lighting unit that is disposed to overlap with the electro-optical panel in a plan view and that irradiates the electro-optical panel, and a frame-shaped holding member that has an adhesive layer for holding the electro-optical panel and the lighting unit. The holding member is provided at an outer peripheral end surface of the electro-optical panel and an outer peripheral end surface of the lighting unit, and fixes the electro-optical panel and the lighting unit.
    Type: Application
    Filed: July 9, 2009
    Publication date: March 4, 2010
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventor: Kanechika KIYOSE
  • Publication number: 20100052713
    Abstract: A display device is provided with a light detection unit that detects the intensity of ambient light and is capable of automatically controlling the luminosity of an illumination unit and/or the luminosity of the display device on the basis of the intensity of ambient light detected by the light detection unit. Moreover, the display device makes it possible to easily conduct a test on light-sensor characteristics.
    Type: Application
    Filed: July 16, 2009
    Publication date: March 4, 2010
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventors: Takashi KUNIMORI, Yasushi YAMAZAKI, Hajime NAKAO
  • Patent number: 7671828
    Abstract: A color filter substrate includes a substrate and color layers of different colors which are disposed on the substrate. The color layers are provided in unit pixels. The unit pixels each include subpixels. The subpixels each include a reflection region where light entering the pixels is reflected and a transmission region where light entering the pixels is transmitted. The reflection and transmission regions include a different combination of two color layers selected from the color layers for each of the subpixels. The two color layers are adjacent to each other in a plane in the reflection region and are stacked on top of each other in the transmission region. The transmission region of at least one of the subpixels has an unstacked area where one of the two color layers is formed.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: March 2, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventors: Tomoyuki Nakano, Keiji Takizawa, Hideki Kaneko
  • Patent number: 7671958
    Abstract: A liquid crystal device includes a first substrate, a second substrate, liquid crystal, a switching element, a signal wiring, a planarizing film, a first electrode, an electrode insulating film, a second electrode, and a terminal. The terminal is provided at least in a portion of a region on the first substrate in which the planarizing film is not formed. The terminal includes a terminal body portion, a terminal insulating film, and a terminal electrode portion. The terminal body portion is made of the same material as that of the signal wiring. The terminal insulating film is made of the same material as that of the electrode insulating film. The terminal electrode portion is made of the same material as that of the second electrode. The terminal electrode portion is electrically connected to the terminal body portion through the opening region.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: March 2, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventor: Shin Fujita