Patents Assigned to Epson Imaging Devices Corporation
  • Publication number: 20090091523
    Abstract: An electrooptic device includes: a plurality of scanning lines; a plurality of m image signal lines; m connecting signal lines provided in a one-to-one correspondence with the m image signal lines, each connecting signal line being connected to the corresponding image signal line to feed a data signal; a plurality of data lines blocked by m lines, m data lines in one block being provided in a one-to-one correspondence with the m image signal lines; a scanning-line driving circuit that selects the plurality of scanning lines in a predetermined order; a block selecting circuit that outputs sampling signals indicative of the selection of the blocks in a predetermined order during a period selected for one scanning line; a sampling switch provided for each of the plurality of data lines, each sampling switch being turned on between the corresponding image signal line and data line when the sampling signal selects a block; and pixels provided at the intersections of the plurality of scanning lines and the pluralit
    Type: Application
    Filed: July 31, 2008
    Publication date: April 9, 2009
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventors: Shin FUJITA, Makoto HAYASHI, Hideki KAWADA
  • Patent number: 7514662
    Abstract: An illuminating device includes a plurality of light sources, a light guide plate that has plate surfaces on front and rear sides and a plurality of end faces formed around the plate surfaces, receives light emitted from the plurality of light sources through a light incident surface, which is at least one end face among the plurality of end faces, and emits the light through a light-emitting surface, which is one of the plate surfaces, a plurality of photodetectors that are disposed to face the end faces or the plate surfaces of the light guide plate, and a light source control unit that controls light emission of the plurality of light sources on the basis of the output of the plurality of photodetectors. The plurality of photodetectors include at least two photodetectors including light receiving surfaces that face the end faces or the plate surfaces in different directions from each other.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: April 7, 2009
    Assignee: Epson Imaging Devices Corporation
    Inventor: Hisanori Kawakami
  • Publication number: 20090086137
    Abstract: Provided is a liquid crystal display device including: a liquid crystal display panel; a light detector which is mounted on the liquid crystal display panel and has a plurality of TFT ambient light photo-sensors composed of thin-film transistors (TFTs) for detecting external light; an illumination unit which illuminates light on the liquid crystal display panel; a detection circuit connected to the light detector; and a control unit which controls the brightness of the illumination unit on the basis of the output of the detection circuit, wherein the plurality of TFT ambient light photo-sensors include first and second TFT ambient light photo-sensors for detecting lights of different systems, and, among source wires or drain wires of the first TFT ambient light photo-sensors and the second TFT ambient light photo-sensors, wires which are not connected to the detection circuit are formed by a single wire.
    Type: Application
    Filed: September 24, 2008
    Publication date: April 2, 2009
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventors: Masahiro HORIGUCHI, Takashi KUNIMORI
  • Publication number: 20090086145
    Abstract: A liquid crystal display device includes a pair of substrates, a plurality of gate lines arranged in parallel, a plurality of common lines arranged in parallel, a plurality of source lines arranged in such a manner that the direction of the source lines intersects the direction of the gate lines and the common lines, thin-film transistors arranged in the vicinity of intersections of the gate lines and source lines, lower electrodes arranged in respective regions separated by the plurality of gate lines and the plurality of source lines, the lower electrodes being connected to the common lines and composed of a transparent conductive material, upper electrodes arranged on surfaces of the respective lower electrodes with an insulating film provided between the upper electrode and the lower electrode, each of the upper electrodes having a plurality of slits arranged in parallel with one another, the gate lines, the common lines, the source lines, the thin-film transistors, the lower electrodes, and upper electro
    Type: Application
    Filed: July 24, 2008
    Publication date: April 2, 2009
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventors: Masahiro HORIGUCHI, Hideki KANEKO, Shunichi NAKASHIMA, Hiroyuki ITO
  • Publication number: 20090086143
    Abstract: Provided is a liquid crystal display device including: a pair of transparent substrates including a liquid crystal layer interposed therebetween, wherein, at the liquid crystal layer side of one of the pair of transparent substrates, a plurality of scan lines and a plurality of signal lines are arranged in a display area in a matrix, first electrodes are formed in pixel areas partitioned by the scan lines and the signal lines, a second electrode is formed on the first electrodes with an insulating film interposed therebetween over at least the display area, a common line is formed outside the display area, and the second electrode is electrically connected to the common line via a low-resistance line which is formed along at least one side of the display area.
    Type: Application
    Filed: August 25, 2008
    Publication date: April 2, 2009
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventors: Hideki KANEKO, Masahiro HORIGUCHI, Osamu KOBAYASHI
  • Publication number: 20090085854
    Abstract: The invention provides a display unit that has a display area and first and second photodetectors 10a and 10b on a substrate and outputs as a light intensity signal S a light intensity detected by the first and second photodetectors 10a and 10b. The first photodetector 10a includes a first photodetection circuit LS1 outputting a first output signal Sa to an ambient light photosensor reader 20, and the second photodetector 10b includes a light-reducing unit and a second photodetection circuit LS2 outputting a second output signal Sb to an ambient light photosensor reader 20. The ambient light photosensor reader 20 includes a photodegradation factor calculator 21 calculating a photodegradation reparation factor K, a photodegradation rate calculator 22 deriving a photodegradation rate D based on the photodegradation reparation factor K, and a light signal output unit 24 outputting a light intensity signal S based on the photodegradation rate D.
    Type: Application
    Filed: August 15, 2008
    Publication date: April 2, 2009
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventors: Takashi KUNIMORI, Yasushi YAMAZAKI, Takashi SATO, Masanori YASUMORI
  • Patent number: 7511780
    Abstract: An active matrix liquid crystal display device includes a pixel transistor, a wiring layer, a first insulating layer, a lower electrode layer, a second insulating layer, and an upper electrode layer. The wiring layer is connected to the pixel transistor. The first insulating layer is provided on the pixel transistor and the wiring layer. The lower electrode layer is provided on the first insulating layer and used as one of a common electrode layer and a pixel electrode layer. The second insulating layer is provided on the lower electrode layer. The upper electrode layer is provided on the second insulating layer and used as the other of the common electrode layer and the pixel electrode layer. The thickness t of the second insulating layer satisfies t<[(?0?/W)×{(0.025381/P)2/6}]/(100×10?9) and t>[(?0?/W)×{(0.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: March 31, 2009
    Assignee: Epson Imaging Devices Corporation
    Inventors: Tomohide Onogi, Yasuo Segawa
  • Publication number: 20090079915
    Abstract: The invention provides, as an aspect thereof, a transflective liquid crystal display panel that includes: a first substrate that has a plurality of pixel areas, each of the plurality of pixel areas having a transmissive area and a reflective area; and a second substrate that is provided opposite to the first substrate with a liquid crystal layer being sandwiched therebetween.
    Type: Application
    Filed: September 16, 2008
    Publication date: March 26, 2009
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventor: Hayato KURASAWA
  • Publication number: 20090079894
    Abstract: The invention relates to an electro-optical device having an electro-optical panel and a supporting frame that supports the electro-optical panel either directly or indirectly. The supporting frame of the electro-optical device according to an aspect of the invention includes: a resin base frame member; and a metal member that has an embedded portion that is covered inside the resin base frame member and an exposed portion that is exposed from the resin base frame member. In the configuration of the electro-optical device of the invention, the exposed portion of the metal member has an inner exposed portion that is exposed at a middle face of the inside of the supporting frame viewed along the thickness direction of the supporting frame. At least one of the electro-optical panel, which is supported inside the supporting frame, and other member is in contact with the inner exposed portion of the metal member.
    Type: Application
    Filed: March 12, 2008
    Publication date: March 26, 2009
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventor: Tatsumi Okuda
  • Publication number: 20090079680
    Abstract: A method for compensating light leakage caused by slit diffraction in a dual-view display device by making use of a light blocker with slits is provided. A dual-view display device includes: a display that makes a first image and a second image of an input composite image visible in corresponding different viewing directions with a light blocker with slits, the composite image being arranged alternately with subpixels of the first image and subpixels of the second image, the first image being represented by pixels each composed of at least three subpixels of RGB, and the second image being represented by pixels each composed of at least three subpixels of RGB; and a compensation unit that compensates a gradation scale of a target subpixel to be compensated based on a gradation scale of the same color subpixel of adjacent pixel of the target subpixel.
    Type: Application
    Filed: July 29, 2008
    Publication date: March 26, 2009
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventor: Ken YAGIURA
  • Publication number: 20090073103
    Abstract: A liquid crystal display device includes: a pixel region including a plurality of pixels; a plurality of storage capacitance lines; a storage capacitor connected between a pixel electrode of each of the pixels and each of the storage capacitance lines; a polarity signal generating circuit that generates a polarity signal, which is repeatedly inverted between a first level and a second level for every frame, in a display region of the pixel region where an image is displayed and that fixes the polarity signal to the first level or the second level in a non-display region where an image is not displayed; a first switching element that switches an electric potential of the storage capacitance line according to the polarity signal generated by the polarity signal generating circuit; and a control circuit that when the display region is changed to the non-display region, makes a control such that a refresh operation of writing a signal corresponding to non-display into the pixel electrode of the pixel correspondin
    Type: Application
    Filed: September 11, 2008
    Publication date: March 19, 2009
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventor: Kenichi TAJIRI
  • Publication number: 20090067112
    Abstract: An electro-optical device includes a frame including a conduction part and a resin part, an electro-optical panel that is housed in the inner side of the resin part, and an exposure part that is formed by exposing the conduction part from the resin part. The exposure part is disposed to face at least a part of an end face of the electro-optical panel or protrude from a surface of the electro-optical panel over the end face.
    Type: Application
    Filed: July 24, 2008
    Publication date: March 12, 2009
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventor: Kazunori TAKABAYASHI
  • Patent number: 7501874
    Abstract: A level shift circuit basically has a configuration connecting two CMOS inverter circuits in parallel, furnishes an input signal to a control terminal of the inverter circuit, obtains an output signal from an output terminal of the inverter circuit, and has a function for level shifting the voltage amplitude of the input signal to the voltage amplitude of the supply voltage of the inverter circuit. The signal that is input by the gate terminal of an n-channel transistor arranged in each of two current paths forming the level shift circuit is not a direct input signal but a signal that is supplied by adding an offset corresponding to the threshold of each n-channel transistor with respect to the voltage amplitude of the input signal via the input voltage converter circuit.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: March 10, 2009
    Assignee: Epson Imaging Devices Corporation
    Inventors: Hiroyuki Horibata, Michiru Senda
  • Publication number: 20090059499
    Abstract: There is provided an electro optical device including a frame including a metal unit and a resin unit, and a display panel stored in the resin unit. The resin unit is integrally formed with the metal unit to form the frame including a resin material, and at least a part of an end of the metal unit is buried in the resin unit in the state where the end is bent at a side of the display panel.
    Type: Application
    Filed: August 5, 2008
    Publication date: March 5, 2009
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventors: Takahiro ONO, Kenichi TANAKA, Kazunori TAKABAYASHI, Shinichi TERAO, Takayuki NARUSE
  • Publication number: 20090061166
    Abstract: An electro-optical device includes: a display panel module having electronic parts provided therein; and an insulating tape that is adhered to the display panel module so as to cover the electronic parts. The insulating tape includes an adhesive portion and a non-adhesive portion. The non-adhesive portion is disposed at a position that covers a region in which the electronic parts are provided, and the adhesive portion is adhered to the display panel module in regions other than the region in which the electronic parts are provided.
    Type: Application
    Filed: August 27, 2008
    Publication date: March 5, 2009
    Applicant: Epson Imaging Devices Corporation
    Inventor: Hiroshi Ayukawa
  • Publication number: 20090057924
    Abstract: A semiconductor device includes a base substrate including an internal circuit, a resin protrusion part that is disposed to protrude on an active face side of the base substrate, and a plurality of terminals that are formed by including an island-shaped conductive film disposed on the resin protrusion part. The plurality of terminals includes a terminal that a conductive state with the internal circuit, and a wiring line that electrically connects at least two terminals among the plurality of terminals is disposed on the active face side.
    Type: Application
    Filed: September 3, 2008
    Publication date: March 5, 2009
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventor: Hideo IMAI
  • Publication number: 20090059341
    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: Application
    Filed: July 24, 2008
    Publication date: March 5, 2009
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventors: Tomokatsu KINUGAWA, Kazuki IMAI
  • Publication number: 20090059139
    Abstract: A transflective liquid crystal display panel includes an array substrate and a color filter substrate. The array substrate includes a plurality of scanning lines and signal lines arranged in a matrix, a lower electrode and an upper electrode in each of pixel regions surrounded by the scanning lines and the signal lines, and a reflecting plate disposed partly below each lower electrode, the lower electrode and the upper electrode in each pixel region being disposed facing each other with an insulating film therebetween, the lower electrodes being composed of a transparent conductive material, the upper electrodes each having a plurality of slits. The color filter substrate includes color filter layer segments arranged in correspondence to the pixel regions. The plurality of slits in each upper electrode have first open ends and second closed ends.
    Type: Application
    Filed: August 14, 2008
    Publication date: March 5, 2009
    Applicant: EPSON IMAGING DEVICES CORPORATION
    Inventor: Hayato KURASAWA
  • Patent number: 7498649
    Abstract: An electro-optical device includes an insulating substrate, a switching element, at least one PIN diode, and at least one reflector. The switching element includes a first polysilicon semiconductor layer formed on the insulating substrate, and a gate electrode formed between the insulating substrate and the first semiconductor layer. Each of the at least one PIN diode includes a second polysilicon semiconductor layer formed on the insulating substrate. The at least one reflector is formed in the same layer as the gate electrode and opposite the second semiconductor layer or layers of the at least one PIN diode.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: March 3, 2009
    Assignee: Epson Imaging Devices Corporation
    Inventors: Shin Koide, Hiroko Muramatsu, Shin Fujita
  • Patent number: 7497612
    Abstract: An electro-optical device includes a lighting device including a light guiding plate and a light source emitting light to the light guiding plate which are received in a frame, and a displaying panel, in which the light guiding plate has an inclined portion which gradually becomes thicker as it becomes nearer the light source, and the frame as a frame protrusion facing the inclined portion of the light guiding plate.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: March 3, 2009
    Assignee: Epson Imaging Devices Corporation
    Inventor: Tatsumi Okuda