Patents by Inventor Koichi Fukuda

Koichi Fukuda 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: 8044450
    Abstract: A semiconductor device comprising a resistance element with a high resistance and high resistance accuracy and a non-volatile semiconductor storage element is rationally realized by comprising the non-volatile semiconductor storage element comprising a first isolation formed to isolate a first semiconductor area, a first insulator, and a first electrode in a self-aligned manner, and a second electrode, and the resistance element comprising a second isolation formed to isolate a second semiconductor area, a third insulator and a conductor layer in a self-aligned manner, and third and fourth electrodes formed on each end of the conductor layer via a fourth insulator, and connected with the conductor layer. The conductor layer or the third and fourth electrodes include the same material with the first or second electrode, respectively.
    Type: Grant
    Filed: July 6, 2005
    Date of Patent: October 25, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mitsuhiro Noguchi, Susumu Yoshikawa, Koichi Fukuda
  • Patent number: 8023082
    Abstract: A liquid crystal display device includes: a first substrate; a second substrate which is placed nearer to a viewer than the first substrate, and which faces a viewer side of the first substrate; a liquid crystal sandwiched between the first substrate and the second substrate; an upper polarization plate which is placed nearer to the viewer than the second substrate, and which faces a viewer side of the second substrate; and a transparent resin plate which is placed nearer to the viewer than the upper polarization plate, and which is attached to a viewer side of the upper polarization plate with one of an adhesive material and a bonding material, the transparent resin plate includes a transparent oxide film on a face that faces the upper polarization plate, and the transparent resin plate is in close contact with the adhesive material or the bonding material through the transparent oxide film.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: September 20, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Koichi Fukuda, Tetsuya Oshima, Satoru Kawasaki, Tsutomu Sato, Kouji Hayakawa
  • Patent number: 8004185
    Abstract: Provided is a display apparatus including: a plurality of pixels each having a plurality of light emitting devices each showing different luminescent colors; and a circularly polarizing member placed on a light extraction side of each of the light emitting devices and being across the light emitting devices to be commonly used by the light emitting devices, in which: the circularly polarizing member shows a higher transmittance for a first luminescent color out of the plurality of luminescent colors in a light emitting device showing the first luminescent color than a transmittance for any other color; and a transmittance for the first luminescent color in a light emitting device showing any other luminescent color is lower than the transmittance for the first luminescent color in the light emitting device showing the first luminescent color.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: August 23, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koichi Fukuda, Masahiro Okuda, Hiroshi Matsuda
  • Publication number: 20110193116
    Abstract: To improve light extraction efficiency of a light emitting device, the light emitting device includes: a first electrode; a second electrode provided on a light extraction side; an emission layer formed between the first electrode and the second electrode; a reflection surface located on the first electrode with respect to the emission layer; and a periodic structure at a node of interference generated by light emitted from the emission layer and light emitted from the emission layer to the reflection surface side and reflected on the reflection surface. The periodic structure is for diffracting light generated in the emission layer and guided in an in-plane direction of the light emitting device in a direction to the second electrode, and for extracting the light to the outside of the light emitting device.
    Type: Application
    Filed: November 13, 2008
    Publication date: August 11, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Koichi Fukuda
  • Publication number: 20110101386
    Abstract: To further improve light extraction efficiency, a light-emitting apparatus includes a cavity for resonating light emitted from a emission layer between a first reflective surface and a second reflective surface. The first reflective surface is located on a first electrode side relative to the emission layer. The second reflective surface is located on a second electrode side relative to the emission layer. A periodic structure for extracting, to outside of a light-emitting device, light which is generated from the emission layer and wave-guided in an in-plane direction of the light-emitting device between the first reflective surface and the second reflective surface is formed in the first reflective surface, or in the second reflective surface, or between the first reflective surface and the second reflective surface.
    Type: Application
    Filed: November 13, 2008
    Publication date: May 5, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Koichi Fukuda
  • Publication number: 20110090736
    Abstract: A semiconductor memory device includes a sense amplifier which senses identical multilevel data, which is stored in a memory cell, a plurality of number of times at a time of read, and a n-channel MOS transistor which has a current path one end of which is connected to the sense amplifier and the other end of which is connected to a bit line. The device further include a control unit which applies a first voltage to a gate electrode of the n-channel MOS transistor, thereby setting the n-channel MOS transistor in an ON state, and applies a second voltage which is higher than the first voltage, to the gate electrode during a period after first sense and before second sense.
    Type: Application
    Filed: December 21, 2010
    Publication date: April 21, 2011
    Inventors: Rieko TANAKA, Koichi Fukuda, Takumi Abe
  • Patent number: 7928640
    Abstract: A display apparatus includes a substrate; a plurality of pixels arranged above the substrate, each including a plurality of sub-pixels emitting light of different colors; a circularly polarizing member disposed above the pixels, the transmittance of light of a selected color through the circularly polarizing member being higher than that of light of the other colors therethrough; and a light-absorbing member disposed only above the sub-pixels, emitting light of the non-selected colors. The light-absorbing member absorbs light of the selected color.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: April 19, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koichi Fukuda, Ryuichiro Isobe
  • Publication number: 20110075485
    Abstract: A non-volatile semiconductor storage device according to one aspect of the present invention includes a plurality of sense amplifier circuit that are configured to carry out a plurality of read cycles on a plurality of bit lines connected to those memory cells that are selected by a selected one of the word lines. During the second and subsequent read cycles, supply of a read current is ceased to those bit lines when it is determined in the preceding read cycle that a current not less than a certain determination current level flows therethrough, and the read current is supplied only to the remaining bit lines. A setup time of the bit lines in the first read cycle is set shorter than a setup time of the bit lines in the second and subsequent read cycles.
    Type: Application
    Filed: September 3, 2010
    Publication date: March 31, 2011
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Koichi FUKUDA, Makoto Iwai
  • Publication number: 20110063922
    Abstract: Nonvolatile semiconductor memory device according to one embodiment includes: a plurality of planes; a memory cell array provided in the plurality of planes respectively; bit lines; and a control circuit. Each memory cell array is configured as an array of NAND cell units each including a memory string. The memory string includes a plurality of nonvolatile memory cells connected in series. The bit lines are connected to a first end of the NAND cell units, respectively. The control circuit controls a write operation of charging the bit lines up to a certain voltage value, and then setting data in the nonvolatile memory cells to a certain threshold voltage distribution state. The control circuit is configured to be capable of executing an operation of charging the bit lines in a write operation by varying timings of starting charging the bit lines among the plurality of planes.
    Type: Application
    Filed: September 3, 2010
    Publication date: March 17, 2011
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Rieko TANAKA, Koichi Fukuda
  • Publication number: 20110031515
    Abstract: The organic light-emitting device of the present invention includes a plurality of organic light-emitting elements including an organic light-emitting element showing a first emission color and at least one organic light-emitting element showing a different emission color from the first emission color, each of the organic light-emitting elements including: a first electrode having a reflective surface; a second electrode placed on a light extraction side and including a semi-transparent layer; an organic compound layer including a light-emitting layer and formed between the first electrode and the second electrode; and a micro cavity structure for resonating light emitted from the light-emitting layer between the reflective surface and the semi-transparent layer, wherein the semi-transparent layer in the organic light-emitting element showing the first emission color is different in thickness and/or material from the semi-transparent layer in the at least one organic light-emitting element showing the differe
    Type: Application
    Filed: October 21, 2010
    Publication date: February 10, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Nobutaka Mizuno, Koichi Fukuda
  • Patent number: 7872919
    Abstract: A semiconductor memory device includes a sense amplifier which senses identical multilevel data, which is stored in a memory cell, a plurality of number of times at a time of read, and a n-channel MOS transistor which has a current path one end of which is connected to the sense amplifier and the other end of which is connected to a bit line. The device further include a control unit which applies a first voltage to a gate electrode of the n-channel MOS transistor, thereby setting the n-channel MOS transistor in an ON state, and applies a second voltage which is higher than the first voltage, to the gate electrode during a period after first sense and before second sense.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: January 18, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Rieko Tanaka, Koichi Fukuda, Takumi Abe
  • Patent number: 7868542
    Abstract: Provided is a light-emitting apparatus which can improve the light extraction efficiency without adversely influencing a functional layer of a light-emitting device and which includes a substrate; a light-emitting device formed on the substrate, the light-emitting device including: a first electrode formed on the substrate; an insulating member covering a periphery of the first electrode; and a functional layer formed on an exposed portion of the first electrode and including an emission layer; and a second electrode formed on the functional layer and the insulating member, in which a periodic structure is formed on a surface of the insulating member opposite to a substrate side, and an optical waveguide is formed between a bottom portion of the periodic structure and the first electrode or between the bottom portion of the periodic structure and the substrate.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: January 11, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Koichi Fukuda
  • Publication number: 20110002165
    Abstract: A flash memory according to a present embodiment includes a memory cell array. The memory cell array includes a plurality of memory cells. Each of the memory cells can store n-bit data (n is an integer equal to or larger than 2). A plurality of word line are connected to gate terminals of the memory cells. A plurality of bit lines are connected to the memory cells. Sense amplifiers are configured to detect data stored in the memory cells via the bit lines. A data latch circuit of m×n bits can store n-bit data stored in each of m memory cells (m is an integer equal to or larger than 2) connected to one of the word lines. A multi-level interface can simultaneously transfer data of two or more bits between the data latch circuit and outside.
    Type: Application
    Filed: July 1, 2010
    Publication date: January 6, 2011
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Koichi FUKUDA
  • Patent number: 7864264
    Abstract: A display device includes a display panel having opposed first and second substrates with the second substrate being arranged closer to a viewer, an upper polarizer which is arranged closer to the viewer than the second substrate, and a resin film which is arranged closer to the viewer than the upper polarizer and is in contact with the upper polarizer. An outer periphery of the upper polarizer is arranged inside an outer periphery of the second substrate, and an outer periphery of the resin film is arranged outside the outer periphery of the upper polarizer as viewed from a front surface of the display panel. A cushion material is in contact with the second substrate, and the resin film is interposed between the second substrate and the resin film.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: January 4, 2011
    Assignee: Hitachi Displays, Ltd.
    Inventors: Tsutomu Sato, Masayuki Yanagihara, Koichi Fukuda
  • Publication number: 20100309098
    Abstract: Provided is an image display apparatus which achieves robustness of display characteristics (luminance and chromaticity) with respect to a film thickness unevenness, and in which an arbitrary one of pixels includes pixel groups (A and B) which have two characteristics and have a combination of film thicknesses in which: one of the film thicknesses is smaller and another one of the film thicknesses is larger than a film thickness at a peak of a curve in a protruding shape given by an intensity variation of emission luminance with respect to a film thickness variation of the pixel; and the one of the film thicknesses is smaller and the another one of the film thicknesses is larger than a film thickness at a peak of a curve in a protruding shape given by a chromaticity variation of at least one component of chromaticity (CIE x, CIE y) with respect to the film thickness variation of the pixel.
    Type: Application
    Filed: May 19, 2010
    Publication date: December 9, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Rei Kurashima, Koichi Fukuda
  • Patent number: 7843123
    Abstract: The organic light-emitting device of the present invention includes a plurality of organic light-emitting elements including an organic light-emitting element showing a first emission color and at least one organic light-emitting element showing a different emission color from the first emission color, each of the organic light-emitting elements including: a first electrode having a reflective surface; a second electrode placed on a light extraction side and including a semi-transparent layer; an organic compound layer including a light-emitting layer and formed between the first electrode and the second electrode; and a micro cavity structure for resonating light emitted from the light-emitting layer between the reflective surface and the semi-transparent layer, wherein the semi-transparent layer in the organic light-emitting element showing the first emission color is different in thickness and/or material from the semi-transparent layer in the at least one organic light-emitting element showing the differe
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: November 30, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobutaka Mizuno, Koichi Fukuda
  • Publication number: 20100289038
    Abstract: A display apparatus includes a light emitting device emitting red light, a light emitting device emitting green light, and a light emitting device emitting blue light. The display apparatus includes a circular polarizer provided on the light extraction side of the light emitting devices. Each light emitting device includes a periodic structure for extracting light from the light extraction side of the light emitting device, the light being generated in a light emitting layer and guided in the in-plane direction of a substrate. Each period of the periodic structure of the light emitting devices is identical, and the period of the periodic structure is more than 200 nm and 380 nm or less.
    Type: Application
    Filed: May 10, 2010
    Publication date: November 18, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Koichi Fukuda, Rei Kurashima, Hideo Mori
  • Patent number: 7812518
    Abstract: There is provided an organic electroluminescent display apparatus including a plurality of pixels constituting a display portion, each of the pixels includes sub-pixels of at least four colors, each of which includes an organic electroluminescent device having a pair of the electrodes and an organic compound layer formed between the pair of the electrodes, and the sub-pixels of at least four colors constitute a convex polygon containing a white color on CIE chromaticity coordinates, and includes the sub-pixels of two colors to be complementary colors with the white color interposed therebetween. In this case, the organic compound layers of the sub-pixels of two colors each contain a phosphorescent organic compound. The organic electroluminescent display apparatus can enlarge the color gamut and simultaneously can reduce the power consumption.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: October 12, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koichi Fukuda, Masataka Yashima, Toshinori Hasegawa
  • Publication number: 20100238733
    Abstract: A NAND flash memory includes a NAND string and a control circuit, wherein in a write operation, the control circuit applies a writing voltage between a control gate of a selected memory cell to be written and a semiconductor well, and after the write operation and before performing a verification read operation of verifying whether data has been written into the selected memory cell, the control circuit performs a de-trapping operation, in which a first voltage of a same potential as that of the semiconductor well or a same polarity as that of the writing voltage is applied to the control gate of the selected memory cell and in which a second voltage of a same polarity as that of the writing voltage and larger than the first voltage as an absolute value is applied to a control gate of unselected memory cells not to be written.
    Type: Application
    Filed: March 19, 2010
    Publication date: September 23, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koichi FUKUDA, Yasuhiko Matsunaga
  • Patent number: 7791697
    Abstract: A liquid crystal display device includes a first substrate, a second substrate arranged on a viewer side, and a liquid crystal between the first and second substrates. A light guide plate is arranged on a back surface of the first substrate, a polarization plate is arranged between the first substrate and the light guide plate, and a prism sheet is arranged between the light guide plate and the polarization plate with prisms being provided on a light guide plate side thereof. A diffusion layer is arranged between the prism sheet and the polarization plate, and a light control sheet is arranged between the diffusion layer and the polarization plate. The light control sheet, which is a ?/2 retardation plate, rotates a polarization of light emitted from the diffusion layer, is arranged in contact with the polarization plate.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: September 7, 2010
    Assignee: Hitachi Displays, Ltd.
    Inventor: Koichi Fukuda