Patents Assigned to Epson Imaging Devices Corporation
  • Patent number: 7847883
    Abstract: The invention is directed to the higher contrast in a liquid crystal display device (LCD) having a lighting portion as a front light. A lighting portion is formed by interposing an organic EL layer between a transparent substrate and a transparent substrate. A light shield layer is formed covering a cathode layer of the organic EL element layer. The lighting portion is disposed above the reflective LCD. The reflective LCD has a polarizing plate, a light scattering layer, an opposing substrate, a common electrode, a liquid crystal layer, and a TFT substrate. When the refractive indexes of seven layers of an anode layer, the transparent substrate, a resin layer, the polarizing plate, the light scattering layer, the opposing substrate, and the common electrode are defined as n(1), n(2), n(3), n(4), n(5), n(6), and n(7) respectively, the relation of 1.33>n(k)/n(k+1)>0.75(k=1?6) holds.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: December 7, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventor: Norio Koma
  • Patent number: 7839471
    Abstract: A liquid crystal device has a plurality of pixels arranged. The liquid crystal device includes a first substrate, a second substrate opposing the first substrate, liquid crystal provided between the first substrate and the second substrate, wires formed on the first substrate, and a reflective layer formed on the first substrate. Each pixel has a reflective display region formed by the reflective layer and a transparent display region without the reflective layer, and each wire is routed between two pixels in the transparent display region and in the reflective display region.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: November 23, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventors: Mutsumi Matsuo, Katsuhiro Imai, Tomohiko Kojima, Yoshio Yamaguchi
  • Patent number: 7806542
    Abstract: A display device that performs display by illuminating an object having a display surface is reduced in size and improved in viewability. A panel-shaped illumination device is disposed facing a display surface of an instrument that is the illumination object. The illumination device has light-emitting regions patterned finely and facing the display surface of the instrument. A light-shielding layer is disposed on the light-emitting region of the illumination device on a side not facing the display surface of the instrument, that is, an observer-side. Illumination light emitted from the light-emitting region illuminates the display surface of the instrument uniformly and is reflected toward the observer before visually recognized through transparent region of the illumination device. At that time, direct visual recognition by the observer of the illumination light emitted from the light-emitting region is suppressed.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: October 5, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventor: Norio Koma
  • Patent number: 7808470
    Abstract: An electro-optical device includes an X address decoder that selects one of plural X selection lines, a Y address decoder that selects one of plural Y selection lines, and plural pixel blocks. Each pixel block is provided with respect to an intersection of a corresponding X selection line and a corresponding Y selection lines. Each pixel block includes a pixel circuit and the pixel circuits corresponding to a column share a bit line and a complementary bit line. Each pixel circuit includes a memory circuit, a selection circuit, and a pixel electrode. The memory circuit includes plural transistors that become conductive between the bit line, the complementary bit line, and terminals of the memory circuit at the time of concurrent selection of an X selection line and a Y selection line corresponding to the pixel block to which the plural transistors belong.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: October 5, 2010
    Assignee: Epson Imaging Device Corporation
    Inventors: Yutaka Ozawa, Suguru Yamazaki
  • Publication number: 20100245293
    Abstract: An optical position detecting unit can be configured at low cost and so as to have lower power consumption.
    Type: Application
    Filed: March 26, 2010
    Publication date: September 30, 2010
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventor: Yasunori ONISHI
  • Publication number: 20100238092
    Abstract: A scanner includes a plurality of unit circuits configured with transistors of a same conductivity type. In the scanner, the unit circuit constituting the scanner includes an output transistor that selectively outputs, to an output terminal of the unit circuit, a signal given from an outside. A gate electrode of the output transistor is connected to one end of a voltage limiting transistor, and a gate electrode of the voltage limiting transistor is supplied with a first power supply potential.
    Type: Application
    Filed: March 5, 2010
    Publication date: September 23, 2010
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventor: Yutaka KOBASHI
  • Publication number: 20100225581
    Abstract: An optical position detecting device for optically detecting a position of a target object within a detection region, includes: a position detecting light source which emits position detecting light; a position detecting light source driving circuit which drives the position detecting light source; a light detector of which a light receiving portion faces the detection region; and a signal processing unit which creates an environment light intensity determining signal corresponding to intensity of environment light within the detection region and a position detecting signal for detecting the position of the target object within the detection region on the basis of a detecting signal of the light detector.
    Type: Application
    Filed: March 2, 2010
    Publication date: September 9, 2010
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventor: Kanechika KIYOSE
  • Publication number: 20100225616
    Abstract: A display device with a position detecting function includes: an optical position detecting device which includes a position detecting light source for alternately emitting position detecting infrared light having a light amount attenuated along a predetermined direction and position detecting infrared light having a light amount attenuated along a reverse direction of the predetermined direction, and a light receiving element for receiving the position detecting infrared light reflected by a target object inside a detection region, and which detects a position of the target object on the basis of a light amount detection result of the light receiving element; and an image creating device which includes an image display region of an electric optical panel in a region overlapped with the detection region, wherein the light receiving element is constituted by a semiconductor element formed on the electric optical panel.
    Type: Application
    Filed: February 19, 2010
    Publication date: September 9, 2010
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventor: Kanechika Kiyose
  • Patent number: 7787071
    Abstract: A display device 1 of an embodiment of the invention has a first display panel (10A), a second display panel (10B) that is disposed behind the first display panel (10A), a front rim 20 that is disposed in front of the first display panel (10A), an intermediate cases (30, 35) that are disposed between the first display panel (10A) and the second display panel (10B), and support the first display panel (10A) and the second display panel (10B), and a backlight 40 that is provided behind the second display panel (10B). At least the front rim 20, intermediate cases (30, 35) and backlight 40 are provided with fixing holes 23a, 33a, 38a, 44a in their corners, and fixing is effected integrally at each corner. Thanks to such structure, a display device is provided in which the distance between the two display panels can be altered by an inexpensive method.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: August 31, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventors: Toshiya Nishio, Jiro Isoo
  • Patent number: 7777736
    Abstract: A liquid crystal device includes a liquid crystal panel having a pair of substrates with a liquid crystal layer interposed therebetween, a plurality of light receivers that receives an ambient light and obtains an intensity information of the ambient light, and a controller that controls a display state of an image to be displayed on the liquid crystal panel. In the liquid crystal device, in at least one of the plurality of light receivers, sensitivity for the ambient light differs from the sensitivity of the other light receiver.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: August 17, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventors: Shin Fujita, Yutaka Kobashi, Shin Koide, Tomoyuki Ito
  • Patent number: 7777711
    Abstract: A display capable of inhibiting a logic composition circuit from outputting a signal to a gate line or a drain line at unintentional timing is obtained. In this display, at least either a first shift register circuit portion or a second shift register circuit portion includes a reset transistor for resetting the voltage supply source of a node outputting a first shift signal or a second shift signal to a second voltage supply source not turning on transistors of a logic composition circuit portion in response to an output signal received from a shift register circuit portion precedent thereto by at least two stages with respect to a scanning direction.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: August 17, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventors: Hiroyuki Horibata, Michiru Senda
  • Patent number: 7777821
    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: Grant
    Filed: July 17, 2009
    Date of Patent: August 17, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventor: Akio Ota
  • Patent number: 7764254
    Abstract: An electro-optical device includes a first sub pixel and a second sub pixel. A pixel is configured by the first sub pixel and the second sub pixel only, and the first sub pixel and the second sub pixel emit light of different colors.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: July 27, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventors: Tomokatsu Kinugawa, Kazuki Imai
  • Patent number: 7764348
    Abstract: An array substrate for a liquid crystal panel includes a plurality of pixel electrodes corresponding to a plurality of pixels, and a common electrode provided common to the plurality of pixel electrodes. An alignment of liquid crystal is controlled by each electric field between each of the plurality of the pixel electrodes and the common electrode. The array substrate further includes a pixel selecting circuit, a line group for pixel selecting circuit, a potential applying circuit, a line group for potential applying circuit, and a common electrode line. The pixel selecting circuit sequentially selects pixels among the plurality of pixels. The line group for pixel selecting circuit is connected to input terminals of the pixel selecting circuit. The potential applying circuit applies a potential to the pixel electrode of a selected pixel. The line group for potential applying circuit is connected to input terminals of the potential applying circuit.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: July 27, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventors: Hiroshi Matsuda, Yasushi Miyajima
  • Publication number: 20100182529
    Abstract: A mount structure includes a wiring board and a semiconductor device composed of a light-emitting device or a light-receiving device mounted on one surface side of the wiring board such that an optical axis thereof is oriented in a direction that extends along a board surface of the wiring board. On the one surface side of the wiring board, a first pad on which a first terminal of the semiconductor device is mounted, a second pad on which a second terminal of the semiconductor device is mounted, and a light-shielding conductive layer are formed using the same conductive layer. The first pad and the second pad are arranged on respective sides of an imaginary center line along which the optical axis of the semiconductor device extends and the light-shielding conductive layer is provided at a position beneath a light emission center or a light reception center of the semiconductor device in plan view.
    Type: Application
    Filed: December 28, 2009
    Publication date: July 22, 2010
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventor: Daisuke NAKANISHI
  • Patent number: 7760289
    Abstract: An electro-optic device includes: an electro-optic panel; a panel supporting member for supporting the electro-optic panel from one of front side and back side of the electro-optic panel; a mounted member to be mounted to the panel supporting member from the other one of the front side and the back side. The electro-optic panel includes at least two outer edges opposing to each other in plan view; and the mounted member includes a pair of panel positioning guides for guiding the electro-optic panel by guiding the two outer edges respectively.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: July 20, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventors: Daisuke Nakanishi, Yasunori Onishi
  • Patent number: 7760315
    Abstract: An electrooptical device includes a substrate and an electronic component mounted on the substrate with an adhesive. The substrate has terminals arranged thereon and wiring lines connected to the terminals and extending in a column direction. The terminals are divided into at least one first terminal group and at least one second terminal group that does not overlap the first terminal group in the column direction. The terminals of the first terminal group are shifted from each other in a row direction so that the adjacent terminals overlap each other in the column direction. The terminals of the second terminal group are shifted from each other in the row direction so that the adjacent terminals overlap each other in the column direction.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: July 20, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventor: Hiroyuki Onodera
  • Patent number: 7760284
    Abstract: A liquid crystal device includes a liquid crystal panel; light sources; a light guide plate, opposed to the light sources, for guiding light emitted from the light sources to the liquid crystal panel; a flexible printed circuit board electrically connected to the liquid crystal panel; and a housing accommodating the liquid crystal panel and the light guide plate. The flexible printed circuit board is fixed to the rear face of the light guide plate in such a state that the flexible printed circuit board is curved. The liquid crystal panel is fixed to the housing with a light-shielding double-faced tape placed outside a display region including a sub-region containing the light sources. The light sources are spaced from the light-shielding double-faced tape with an adhesion-preventing member disposed therebetween or adhesion-preventing treatment is performed.
    Type: Grant
    Filed: March 7, 2007
    Date of Patent: July 20, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventor: Tetsuji Murase
  • Publication number: 20100171896
    Abstract: A liquid crystal display device includes a first substrate, a first thin film transistor for pixel selection formed on the first substrate, a pixel electrode and a common electrode formed above the first thin film transistor of the first substrate, a second substrate provided above the pixel electrode and the common electrode via a liquid crystal layer, a shield electrode formed on a surface of the second substrate, and the shield electrode and an interconnection, which supplies specific AC or DC potential, and is turned on by potential larger than a predetermined potential.
    Type: Application
    Filed: December 9, 2009
    Publication date: July 8, 2010
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventors: Shuhei YOSHIDA, Joji NISHIMURA, Yukiya HIRABAYASHI, Hideki UEHARA
  • Patent number: 7751004
    Abstract: In a transflective type liquid crystal display device of an FFS system, a plurality of pixels has a transmissive display area for emitting transmissive display light and a reflective display area for emitting reflective display light, and the reflective display area is equipped with a retardation layer. Polarization axes of polarizers are perpendicular to each other and an alignment direction of the liquid crystal layer is parallel to or perpendicular to the polarization axis of the first polarizer. The angle of a slow axis of the retardation layer is not less than 20° and not more than 25° or not less than 60° and not more than 75° with respect to the polarization axis of the first polarizer. A retardation value of the liquid crystal layer in the reflective area exceeds a quarter wavelength, and a retardation value of the retardation layer exceeds a half wavelength.
    Type: Grant
    Filed: April 22, 2008
    Date of Patent: July 6, 2010
    Assignee: Epson Imaging Devices Corporation
    Inventor: Toshiharu Matsushima