Patents by Inventor Hidemasa Mizutani
Hidemasa Mizutani 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).
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Publication number: 20020063516Abstract: A luminescence device is principally constituted by a pair of electrodes and an organic compound layer disposed therebetween.Type: ApplicationFiled: September 24, 2001Publication date: May 30, 2002Inventors: Akira Tsuboyama, Hidemasa Mizutani, Shinjiro Okada, Takao Takiguchi, Seishi Miura, Takashi Moriyama, Satoshi Igawa, Jun Kamatani, Manabu Furugori
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Publication number: 20020064681Abstract: A luminescence device is principally constituted by a pair of electrodes and an organic compound layer disposed therebetween.Type: ApplicationFiled: September 24, 2001Publication date: May 30, 2002Inventors: Takao Takiguchi, Akira Tsuboyama, Hidemasa Mizutani, Shinjiro Okada, Seishi Miura, Takashi Moriyama, Satoshi Igawa, Jun Kamatani, Manabu Furugori
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Patent number: 6392620Abstract: A display apparatus features an optical modulation device including a plurality of pixels and a pair of electrodes to which a voltage is applied, and an illumination device for illuminating the optical modulation device instantaneously and successively with a plurality of monochromatic lights of different colors in a frame period to provide a full-color image in combination with application of the voltage to the electrodes of the optical modulation device thereby effecting a full-color display over a succession of the prescribed period. A controller divides each frame period into two periods including a first period for displaying a full-color image at each pixel and a second period immediately after the first period and for placing the optical modulation device in a non-display state, thus effectively suppressing an after image phenomenon adversely affecting a full-color image display in a subsequent frame period.Type: GrantFiled: November 5, 1999Date of Patent: May 21, 2002Assignee: Canon Kabushiki KaishaInventors: Hidemasa Mizutani, Yoshihiro Onitsuka
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Patent number: 6346997Abstract: Illumination device, image apparatus using the device and information processing system using the apparatus for illuminating a light beam emitted from at least two light emitting elements of different light emission wavelength ranges to an original through a light conductor prevent irregularity of illumination on the original without providing compensation means to attain improvement in color discrimination ability of a color document sheet read signal without increasing a cost. A light beam applied from an illumination device 30 arranged at an end of a light conductor 3 is scattered and reflected by a scatter and reflection area 5 of the light conductor to illuminate the original 100. The illumination device 30 has at least two light emitting elements 81G and 81R of different light emission wavelength ranges and centers of the light emitting elements are arranged at positions spaced from a normal line passing through a center of the scatter and reflection area 5.Type: GrantFiled: September 14, 1998Date of Patent: February 12, 2002Assignee: Canon Kabushiki KaishaInventors: Shinichi Takeda, Hidemasa Mizutani, Noriyuki Kaifu, Isao Kobayashi
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Publication number: 20010050402Abstract: A photoelectric converter of a high signal-to-noise ratio, low cost, high productivity and stable characteristics and a system including the above photoelectric converter. The photoelectric converter includes a photoelectric converting portion in which a first electrode layer, an insulating layer for inhibiting carriers from transferring, a photoelectric converting semiconductor layer of a non-single-crystal type, an injection blocking layer for inhibiting a first type of carriers from being injected into the semiconductor layer and a second electrode layer are laminated in this order on an insulating substrate.Type: ApplicationFiled: August 9, 1999Publication date: December 13, 2001Inventors: NORIYUKI KAIFU, HIDEMASA MIZUTANI, SHINICHI TAKEDA, ISAO KOBAYASHI, SATOSHI ITABASHI
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Patent number: 6295390Abstract: A two-dimensional image input unit is disposed on one surface, and data processed by an image processing circuit for processing an image input by the image input unit can be displayed on a two-dimensional image output unit disposed on the other surface as a rear surface with respect to the one surface. Size and cost reductions of the entire apparatus are attained, and read image information can be displayed on the image output surface as the upper surface in real time.Type: GrantFiled: August 8, 1995Date of Patent: September 25, 2001Assignee: Canon Kabushiki KaishaInventors: Isao Kobayashi, Hidemasa Mizutani, Noriyuki Kaifu, Shinichi Takeda, Masakazu Morishita
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Patent number: 6292238Abstract: A reflection-type liquid crystal apparatus has a liquid crystal panel which includes a pair of a back side substrate and a viewer's side substrate disposed opposite to each other, and a liquid crystal disposed between the substrates. The back side substrate is provided with a plurality of scanning electrodes for applying a scanning signal to the liquid crystal, and the viewer's side substrate is provided with a plurality of transparent data electrodes for applying data signals to the liquid crystal. Further, the scanning electrodes are provided with a reflective and diffusive surface of a metal so as to reflect light incident thereto through the viewer's side substrate. The reflective and diffusive metal scanning electrodes formed on the back substrate are not only effective for providing improved drive characteristics because of its high conductivity but also provides uniform diffusive reflected light for providing a paper-like improved display quality.Type: GrantFiled: August 6, 1997Date of Patent: September 18, 2001Assignee: Canon Kabushiki KaishaInventors: Shinjiro Okada, Hidemasa Mizutani
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Patent number: 6221444Abstract: A liquid crystal device having a good bend alignment characteristic is provided by using an alignment film having an alignment power of aligning nematic liquid crystal molecules in a bend alignment state under no voltage application and providing a retardation R (nm) of the liquid crystal device under application of a prescribed voltage relative to a refractive index anisotropy &Dgr;n of the liquid crystal and a cell thickness d (nm) of the liquid crystal device, providing a retardation factor R/&Dgr;n·d of at most 0.3. As a result, the liquid crystal device can be driven at a high speed always in a stable bend alignment state.Type: GrantFiled: June 7, 1999Date of Patent: April 24, 2001Assignee: Canon Kabushiki KaishaInventors: Shinjiro Okada, Hidemasa Mizutani, Koichi Sato, Hirohide Munakata, Akira Tsuboyama
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Patent number: 6144466Abstract: An electronic circuit apparatus comprises an array of M.times.N functional elements, M.times.N switching elements provided in a one-to-one correspondence with the M.times.N functional elements, a shift register having M output lines, and a selector having N select lines. M control lines are commonly connected in units of N elements of the M.times.N switching elements. The M control lines are connected to the M output lines of said shift register. N input and/or output lines are commonly connected in units of M elements of the M.times.N switching elements. The N input and/or output lines are connected to the N select lines of the selector. Transistors constituting the shift register are thin-film transistors. And, transistors constituting the selector are transistors each having an active region consisting of a single-crystal semiconductor.Type: GrantFiled: November 12, 1997Date of Patent: November 7, 2000Assignee: Canon Kabushiki KaishaInventors: Hidemasa Mizutani, Mineto Yagyu, Noriyuki Kaifu, Toshihiro Saika
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Patent number: 6075256Abstract: A photoelectric converter of a high signal-to-noise ratio, low cost, high productivity and stable characteristics and a system including the above photoelectric converter. The photoelectric converter includes a photoelectric converting portion in which a first electrode layer, an insulating layer for inhibiting carriers from transferring, a photoelectric converting semiconductor layer of a non-single-crystal type, an injection blocking layer for inhibiting a first type of carriers from being injected into the semiconductor layer and a second electrode layer are laminated in this order on an insulating substrate.Type: GrantFiled: October 23, 1996Date of Patent: June 13, 2000Assignee: Canon Kabushiki KaishaInventors: Noriyuki Kaifu, Hidemasa Mizutani, Shinichi Takeda, Isao Kobayashi, Satoshi Itabashi
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Patent number: 5959740Abstract: Illumination device, image apparatus using the device and information processing system using the apparatus for illuminating a light beam emitted from at least two light emitting elements of different light emission wavelength ranges to an original through a light conductor prevent irregularity of illumination on the original without providing compensation means to attain improvement in color discrimination ability of a color document sheet read signal without increasing a cost. A light beam applied from an illumination device 30 arranged at an end of a light conductor 3 is scattered and reflected by a scatter and reflection area 5 of the light conductor to illuminate the original 100. The illumination device 30 has at least two light emitting elements 81G and 81R of different light emission wavelength ranges and centers of the light emitting elements are arranged at positions spaced from a normal line passing through a center of the scatter and reflection area 5.Type: GrantFiled: October 13, 1995Date of Patent: September 28, 1999Assignee: Canon Kabushiki KaishaInventors: Shinichi Takeda, Hidemasa Mizutani, Noriyuki Kaifu, Isao Kobayashi
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Patent number: 5849163Abstract: A process for forming an epitaxial film on a biased substrate by sputtering a target to which a bias voltage and a plasma-generating high-frequency power are applied, wherein the film formation is carried out in an atmosphere having H.sub.2 O, CO and CO.sub.2 partial pressures controlled at 1.0.times.10.sup.-8 Torr, with the substrate temperature maintained in the range of from 400.degree. to 700.degree. C. The epitaxial film obtained by the process has excellent interface characteristics, very low impurity contents, good crystallinity and excellent step coverage, and is suitable for application to semiconductor devices.Type: GrantFiled: June 6, 1995Date of Patent: December 15, 1998Assignee: Canon Kabushiki KaishaInventors: Takeshi Ichikawa, Hidemasa Mizutani
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Patent number: 5818033Abstract: A reading device for illuminating a light beam emitted from at least two light emitting elements of different light emission wavelength ranges to an original through a light conductor prevent irregularity of illumination on the original without providing compensation means to attain improvement in color discrimination ability of a color document sheet read signal without increasing a cost. A light beam applied from an illumination device 30 arranged at an end of a light conductor 3 is scattered and reflected by a scatter and reflection area 5 of the light conductor to illuminate the original 100. The illumination device 30 has at least two light emitting elements 81G and 81R of different light emission wavelength ranges and centers of the light emitting elements are arranged at positions spaced from a normal line passing through a center of the scatter and reflection area 5.Type: GrantFiled: October 13, 1995Date of Patent: October 6, 1998Assignee: Canon Kabushiki KaishaInventors: Shinichi Takeda, Hidemasa Mizutani, Noriyuki Kaifu, Isao Kobayashi
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Patent number: 5812109Abstract: An image input/output apparatus has a photoelectric conversion element, a display element, and a switch element on a substrate, and has a function of displaying an image using the display element by holding a display potential supplied via the switch element in the photoelectric conversion element, and a function of picking up an image by detecting a charge generated in response to light incident on the photoelectric conversion element via the switch element. The photoelectric conversion element is constituted by a first electrode layer, an insulating layer for preventing passage of a carrier of a first conductivity type and a carrier of a second conductivity type different from the first conductivity type, a photoelectric conversion semiconductor layer, an injection prevention layer for preventing injection of the carrier of the first conductivity type to the photoelectric conversion layer, and a second electrode layer.Type: GrantFiled: August 8, 1995Date of Patent: September 22, 1998Assignee: Canon Kabushiki KaishaInventors: Noriyuki Kaifu, Hidemasa Mizutani, Shinichi Takeda, Isao Kobayashi
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Patent number: 5812284Abstract: An electronic circuit apparatus comprises an array of M.times.N functional elements, M.times.N switching elements provided in a one-to-one correspondence with the M.times.N functional elements, a shift register having M output lines, and a selector having N select lines. M control lines are commonly connected in units of N elements of the M.times.N switching elements. The M control lines are connected to the M output lines of said shift register. N input and/or output lines are commonly connected in units of M elements of the M.times.N switching elements. The N input and/or output lines are connected to the N select lines of the selector. Transistors constituting the shift register are thin-film transistors. And, transistors constituting the selector are transistors each having an active region consisting of a single-crystal semiconductor.Type: GrantFiled: November 25, 1994Date of Patent: September 22, 1998Assignee: Canon Kabushiki KaishaInventors: Hidemasa Mizutani, Mineto Yagyu, Noriyuki Kaifu, Toshihiro Saika
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Patent number: 5808295Abstract: Illumination device, image apparatus using the device and information processing system using the apparatus for illuminating a light beam emitted from at least two light emitting elements of different light emission wavelength ranges to an original through a light conductor prevent irregularity of illumination on the original without providing compensation means to attain improvement in color discrimination ability of a color document sheet read signal without increasing a cost. A light beam applied from an illumination device 30 arranged at an end of a light conductor 3 is scattered and reflected by a scatter and reflection area 5 of the light conductor to illuminate the original 100. The illumination device 30 at least two light emitting elements 81G and 81R of different light emission wavelength ranges and centers of the light emitting elements are arranged at positions spaced from a normal line passing through a center of the scatter and reflection area 5.Type: GrantFiled: January 9, 1997Date of Patent: September 15, 1998Assignee: Canon Kabushiki KaishaInventors: Shinichi Takeda, Hidemasa Mizutani, Noriyuki Kaifu, Isao Kobayashi
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Patent number: 5796381Abstract: The waveforms of driving signals used for driving a display device which comprises a smectic liquid crystal and matrix electrodes including scanning electrode groups and information electrode groups are changed according to the ambient temperature in order to provide a satisfactory display in a wide range of temperatures. These types of the driving signals suppress unexpected inversion of the liquid crystal molecules at a low temperature and provide fast scanning at a high temperature.Type: GrantFiled: September 27, 1995Date of Patent: August 18, 1998Assignee: Canon Kabushiki KaishaInventors: Manabu Iwasaki, Akira Tsuboyama, Kazunori Katakura, Hidemasa Mizutani
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Patent number: 5703666Abstract: A liquid crystal device has a light source and liquid crystal elements which selectively transmit light emitted by the light source. The liquid crystal device comprises: the light source, being an electroluminescent device, having a transparent electrode disposed on a light output side of the light source, an electrode opposite to the transparent electrode, and an electroluminescence emission layer interposed between the transparent electrode and the opposite electrode; voltage supply means connected to the transparent electrode in order to feed a reference voltage to the transparent electrode; and driving voltage application means for applying a driving voltage to the opposite electrode.Type: GrantFiled: August 8, 1995Date of Patent: December 30, 1997Assignee: Canon Kabushiki KaishaInventors: Toshihiro Saika, Hidemasa Mizutani, Noriyuki Kaifu, Toshio Kameshima
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Patent number: 5616944Abstract: A diode is provided comprising first and second semiconductor regions. The first semiconductor region is of one conductivity type and the second is of the opposite conductivity type. A third region is provided which is either an intrinsic semiconductor region or a low concentration region. The low concentration region has an impurity concentration lower than that of the first and second semiconductor layers. The third region is arranged to separate the first and second semiconductor regions. A control electrode region is provided over the third region through an insulative film.Type: GrantFiled: November 28, 1994Date of Patent: April 1, 1997Assignee: Canon Kabushiki KaishaInventors: Hidemasa Mizutani, Toru Koizumi
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Patent number: 5591963Abstract: A photoelectric conversion device comprising, on a substrate, a photoelectric conversion element having in lamination, a first electrode layer, a first insulating layer for blocking carriers of first conduction type and second conduction type from passing therethrough, a photoelectric conversion semiconductor layer, a second insulating layer for blocking carriers of first conduction type and second conduction type from passing therethrough, and second electrode layers and a switch element having laminated a gate electrode layer, a third insulating layer, a semiconductor layer, an ohmic contact layer, a pair of first and second main electrode layers, and a wiring layer for electrically connecting first or second electrode layer of photoelectric conversion element to first main electrode layer of the switch element can be provided with high SN ratio and at lower cost without providing the injection blocking layer.Type: GrantFiled: August 8, 1995Date of Patent: January 7, 1997Assignee: Canon Kabushiki KaishaInventors: Shinichi Takeda, Hidemasa Mizutani, Noriyuki Kaifu, Isao Kobayashi