Patents by Inventor Hidekazu Kobayashi

Hidekazu Kobayashi 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).

  • Publication number: 20140252336
    Abstract: A display device includes a light emitting functional layer disposed between a first and second substrates; a first pixel which emits light to the second substrate and has a first pixel electrode disposed between the light emitting functional layer and the first substrate, a second electrode disposed between the light emitting functional layer and the second substrate, and a first reflecting layer disposed between the first pixel electrode and the first substrate; a second pixel which emits light to the first substrate side and has a second pixel electrode disposed between the light emitting functional layer and the first substrate, a second electrode disposed between the light emitting functional layer and the second substrate, and a second reflecting layer disposed between the second electrode and the second substrate; and a driving element which drives the first and second pixel electrodes is disposed above first substrate.
    Type: Application
    Filed: May 22, 2014
    Publication date: September 11, 2014
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Hidekazu KOBAYASHI
  • Patent number: 8824053
    Abstract: Two aperture members are disposed on each side of a lens array. In one aperture member, decreasingly tapered through holes having a cross sectional area that gradually decreases in a light incident direction and increasingly tapered through holes having a cross sectional area that gradually increases in the light incident direction are alternatively arranged. The other aperture member that is oppositely disposed with respect to the lens array has the same configuration. The center axes of the decreasingly tapered through holes and the center axes of the increasingly tapered through holes are coincident with each other. This enables to achieve an image forming optical element that has a large amount of light and less irregularity of the amount of light.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: September 2, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Hidekazu Kobayashi, Kei Yokota, Shoichi Kitagawa
  • Patent number: 8766533
    Abstract: A display device includes a light emitting functional layer disposed between a first and second substrates; a first pixel which emits light to the second substrate and has a first pixel electrode disposed between the light emitting functional layer and the first substrate, a second electrode disposed between the light emitting functional layer and the second substrate, and a first reflecting layer disposed between the first pixel electrode and the first substrate; a second pixel which emits light to the first substrate side and has a second pixel electrode disposed between the light emitting functional layer and the first substrate, a second electrode disposed between the light emitting functional layer and the second substrate, and a second reflecting layer disposed between the second electrode and the second substrate; and a driving element which drives the first and second pixel electrodes is disposed above first substrate.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: July 1, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Hidekazu Kobayashi
  • Publication number: 20140168724
    Abstract: A document illumination device includes a light-conducting member in which is formed a base surface that extends along a lengthwise direction, an irradiation surface that extends along the lengthwise direction and is tilted in the widthwise direction relative to the base surface, and a side surface that extends in the lengthwise direction and connects the base surface to the irradiation surface; a scattering member that is provided opposing the base surface and the side surface and that scatters light emitted from the base surface and the side surface; and a light source provided opposing a lengthwise direction-end surface of the light-conducting member.
    Type: Application
    Filed: December 9, 2013
    Publication date: June 19, 2014
    Applicant: Seiko Epson Corporation
    Inventor: Hidekazu Kobayashi
  • Patent number: 8754642
    Abstract: A magnetic balance type current sensor includes a magnetoresistance effect element whose resistance value changes owing to the application of an induction magnetic field from a current to be measured; a feedback coil disposed in the vicinity of the magnetoresistance effect element and generating a cancelling magnetic field cancelling out the induction magnetic field; a magnetic field detection bridge circuit including two outputs causing a voltage difference corresponding to the induction magnetic field to occur; and a magnetic shield attenuating the induction magnetic field and enhancing the cancelling magnetic field, wherein, on the basis of the current flowing through the feedback coil at the time of an equilibrium state in which the induction magnetic field and the cancelling magnetic field are cancelled out, the current to be measured is measured, wherein the feedback coil, the magnetic shield, and the magnetic field detection bridge circuit are formed on a same substrate.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: June 17, 2014
    Assignee: Alps Green Devices., Ltd.
    Inventors: Yosuke Ide, Masahiro Iizuka, Masamichi Saito, Akira Takahashi, Hideharu Matsuo, Tsuyoshi Nojima, Shigenobu Miyajima, Naoki Sakatsume, Kenji Ichinohe, Yoshihiro Nishiyama, Tatsuya Kogure, Hidekazu Kobayashi
  • Publication number: 20140111865
    Abstract: A head-mounted display that guides image light displayed by an image formation unit and focuses the image light on a viewer's side includes a light guide member that angularly converts the image light incident from the image formation unit based on reflection at a plurality of transflective layers, and a light absorption layer is disposed on each of the transflective layers. The light guide member has a light incident surface through which the image light is introduced into the light guide member, a prism reflection surface that is disposed at an end of the light guide member, serves as one of the plurality of transflective layers, and reflects the image light introduced through the light incident surface, and the light absorption layers disposed between the light guide member and the prism reflection surface.
    Type: Application
    Filed: October 21, 2013
    Publication date: April 24, 2014
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Hidekazu KOBAYASHI
  • Publication number: 20130342912
    Abstract: By satisfying the first condition, the brightness of the lens array can be obtained while retaining the long diameter of the first lens surface and the second lens surface in the Y direction, and the resolution of the lens array can be improved by decreasing the lens pitch in the X direction. Moreover, by satisfying the second condition, the MTF at the spatial frequency (line pairs/mm) of the lens array can be definitely set to be greater than 0%. As a result, it is possible to provide the CIS module that includes the lens unit having good optical property with a simple configuration.
    Type: Application
    Filed: June 17, 2013
    Publication date: December 26, 2013
    Inventor: Hidekazu Kobayashi
  • Publication number: 20130265618
    Abstract: A light guide inserted into an inclined groove is disposed so as to partially overlap with a lens unit that is fitted into a concave groove disposed parallel to the inclined groove when seen in a plan view, to regulate the separation of the lens unit from the concave groove and hold the lens unit in an insertion state by the light guide. Therefore, a fixing unit such as an adhesive agent is not required in fixedly disposing the light guide and the lens unit at a predetermined position of a frame, and a CIS module is assembled without using an adhesive agent, thereby allowing the CIS module that is easily disassembled when being discarded and that improves recycling efficiency to be provided.
    Type: Application
    Filed: March 28, 2013
    Publication date: October 10, 2013
    Applicant: Seiko Epson Corporation
    Inventor: Hidekazu Kobayashi
  • Publication number: 20130265619
    Abstract: Since a light emitting surface in a cross section perpendicular to the longitudinal direction of a light guide is formed to have a smaller width than a reflecting surface, light of an LED, which is incident from an end surface of the light guide and is scattered throughout the entirety of the longitudinal direction in the reflecting surface, is condensed toward the light emitting surface, and is then emitted in the form of a band toward a document from the light emitting surface. Therefore, it is possible to provide a CIS module including an illumination unit having a new configuration capable of illuminating a portion where the document and an optical axis of the lens array included in the lens unit intersect, in the form of a band with high efficiency using the illumination unit.
    Type: Application
    Filed: March 28, 2013
    Publication date: October 10, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Hidekazu Kobayashi
  • Patent number: 8519704
    Abstract: A magnetic-balance-system current sensor includes: a magnetoresistive element, a resistance value of the magnetoresistive element being changed by applying an induction magnetic field generated by a measurement target current; magnetic cores disposed near the magnetoresistive element; a feedback coil disposed near the magnetoresistive element and configured to generate a cancelling magnetic field that cancels out the induction magnetic field; and a magnetic-field detecting bridge circuit having two outputs. The measurement target current is measured on the basis of a current flowing through the feedback coil when the induction magnetic field and the induction magnetic field and the cancelling magnetic field cancel each other out. The feedback coil, the magnetic cores, and the magnetic-field detecting bridge circuit are formed on a same substrate. The feedback coil is of a spiral type, and the magnetic cores are provided above and below the feedback coil.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: August 27, 2013
    Assignee: Alps Green Devices Co., Ltd.
    Inventors: Yosuke Ide, Masamichi Saito, Akira Takahashi, Tsuyoshi Nojima, Shigenobu Miyajima, Naoki Sakatsume, Kenji Ichinohe, Yoshihiro Nishiyama, Tatsuya Kogure, Hidekazu Kobayashi, Masahiro Iizuka
  • Patent number: 8449123
    Abstract: An image forming apparatus includes: a screen having a display surface; and a projector that renders an image by scanning light on the display screen, wherein the screen selects, independently in respective regions of the display surface, a light transmission state in which the light is transmitted and a light diffusion state in which the light is diffused, the screen being configured such that the region where address light is irradiated is in the light diffusion state and the region where the address light is not irradiated is in the light transmission state, and the projector scans the address light on the display surface such that an area of the display surface corresponding to an image displayed on the display surface changes to the light diffusion state.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: May 28, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Yasushi Mizoguchi, Hidekazu Kobayashi, Shuichi Wakabayashi, Taisuke Yamauchi, Takashi Takeda
  • Patent number: 8437107
    Abstract: A magnetic coupling type isolator includes: a magnetic field generator for generating an external magnetic field by an input signal; a magnetoresistive element for detecting the external magnetic field and converting the detected magnetic field into an electric signal, the magnetoresistive element being electrically insulated from the magnetic field generator and positioned in a location capable of being magnetically coupled so as to be overlapped with the magnetic field generator as seen in a top plan view; and first and second shield films overlapped with the magnetic field generator and the magnetoresistive element as seen in a top plan view, wherein a distance between the magnetoresistive element and the second shield film is set to 8 to 100 ?m.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: May 7, 2013
    Assignee: Alps Green Devices Co., Ltd.
    Inventors: Yosuke Ide, Masamichi Saito, Akira Takahashi, Tsuyoshi Nojima, Yoshihiro Nishiyama, Hidekazu Kobayashi, Kenji Ichinohe, Naoki Sakatsume
  • Patent number: 8395383
    Abstract: A current sensor includes a magnetic detecting element, a bridge circuit including a plurality of resistance elements, and a feedback coil placed adjacent to the magnetic detecting element and generating a cancelling magnetic field for cancelling the induced magnetic field based on the output from the bridge circuit. The wiring patterns forming the bridge circuit are routed so as not to intersect with each other when seen in a plan view. Only the resistance elements constituting each series circuit of the bridge circuit are connected to each other by the wiring pattern in an enclosed area which encloses each resistance element constituting the bridge circuit, and the wiring pattern branched from the wiring pattern is connected to the terminal which is installed in a quantity of only one, outside the enclosed area.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: March 12, 2013
    Assignee: Alps Green Devices Co., Ltd.
    Inventors: Yoshihiro Nishiyama, Masamichi Saito, Akira Takahashi, Yosuke Ide, Hidekazu Kobayashi, Masahiro Iizuka
  • Patent number: 8300315
    Abstract: A head-mounted display includes: a double-sided display device displayed a image on a first side and a second side opposed the first side; a first optical system that forms the image displayed on the first side of the double-sided display device on one eye of a wearer; and a second optical system that forms the image displayed on the second side of the double-sided display device on the other eye of the wearer. The first optical system and the second optical system have switching mechanisms which make at least a part of view being different from the image displayed on the double-sided display devise visible in eyes of the wearer.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: October 30, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Hidekazu Kobayashi
  • Patent number: 8270127
    Abstract: Magnetoresistive effect elements R1 to R4 are a TMR element or CPP-GMR element. A multilayer film forming the magnetoresistive effect elements is formed to have a width dimension T1 and a length dimension L1 perpendicular to the width dimension T1. The length dimension L1 is longer than the width dimension T1. The width dimension of magnetic field generators of the coil is T2. The multilayer film 31 is positioned within the width dimension T3 of 60% in total of 30% each to the width dimension T2 of the magnetic field generators 3 and 4 of the coil in the direction towards both sides from the center of the width dimension T2 when seen in a plan view.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: September 18, 2012
    Assignee: Alps Green Devices Co., Ltd.
    Inventors: Yosuke Ide, Masamichi Saito, Akira Takahashi, Masahiro Iizuka, Yoshihiro Nishiyama, Hidekazu Kobayashi
  • Patent number: 8269492
    Abstract: A magnetic balance type current sensor measures a measured current which flows in a feedback coil when electrical conduction is provided by a voltage difference according to an induction magnetic field from the measured current and an equilibrium state is reached in which the induction magnetic field and a cancel magnetic field cancel each other. Sensor elements in a pair are arranged at positions with magnetic field from the measured current. The magnetization direction of the pinned magnetic layer in the magnetoresistive effect element of one sensor element is aligned in a forward direction with respect to the magnetic field formed by the measured current. The magnetization direction of the pinned magnetic layer in the magnetoresistive effect element of the other sensor element is aligned in a reverse direction with respect to the magnetic field formed by the measured current.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: September 18, 2012
    Assignee: Alps Green Devices Co., Ltd.
    Inventors: Masamichi Saito, Akira Takahashi, Masahiro Iizuka, Tatsuya Kogure, Yosuke Ide, Yoshihiro Nishiyama, Kenji Ichinohe, Naoki Sakatsume, Tsuyoshi Nojima, Shigenobu Miyajima, Hidekazu Kobayashi
  • Patent number: 8222769
    Abstract: A magnetic coupling type isolator includes: a magnetic field generator for generating an external magnetic field by an input signal; a magnetoresistive element for detecting the external magnetic field and converting the detected magnetic field into an electric signal, the magnetoresistive element being electrically insulated from the magnetic field generator and positioned in a location capable of being magnetically coupled so as to be overlapped with the magnetic field generator as seen in a top plan view; first and second shield films overlapped with the magnetic field generator and the magnetoresistive element as seen in a top plan view; and a third shield film disposed to surround the magnetoresistive element.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: July 17, 2012
    Assignee: Alps Green Devices Co., Ltd.
    Inventors: Yosuke Ide, Masamichi Saito, Akira Takahashi, Tsuyoshi Nojima, Yoshihiro Nishiyama, Hidekazu Kobayashi, Kenji Ichinohe, Naoki Sakatsume
  • Patent number: 8208231
    Abstract: A tunneling magnetic sensing element includes a laminate in which a pinned magnetic layer having a magnetization direction pinned, an insulating barrier layer, and a free magnetic layer having a magnetization direction variable with an external magnetic field are laminated in order from below. The insulating barrier layer is made of Mg—O. The free magnetic layer has a soft magnetic layer and an enhanced layer disposed between the soft magnetic layer and the insulating barrier layer to have a spin polarization ratio higher than the soft magnetic layer. An insertion magnetic layer made of one selected from Co—Fe—B, Co—B, Fe—B, and Co—Fe is inserted into the soft magnetic layer in a direction parallel to the interface of each layer constituting the laminate, and the soft magnetic layer is divided into multiple layers in a thickness direction through the insertion magnetic layer.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: June 26, 2012
    Assignee: Alps Electric Co., Ltd.
    Inventors: Kazumasa Nishimura, Hidekazu Kobayashi, Masamichi Saito, Yosuke Ide, Ryo Nakabayashi, Yoshihiro Nishiyama, Akio Hanada, Naoya Hasegawa
  • Patent number: RE43738
    Abstract: An object of the present invention is to provide a A display device capable of narrowing the area of the frame. In order to achieve this object, the display device according to the present invention has a substrate having a plurality of arranged display elements and a wiring layer of a power source on the peripheral side; a bank layer for mutually separating the display elements; an electrode layer for covering the plurality of display elements and the bank layer; and a sealing substrate for further covering the electrode layer by joining the peripheral portion of the substrate and the sealing portion circling around the periphery via a joining element such as an adhesive; wherein the periphery of the sealing substrate is positioned inside the periphery of the substrate, and the peripheral portion of the electrode layer is connected to the wiring of the power source within the sealing portion.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: October 16, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Hidekazu Kobayashi, Osamu Yokoyama, Yojiro Matsueda
  • Patent number: RE44902
    Abstract: An object of the present invention is to provide a display device capable of narrowing the area of the frame. In order to achieve this object, the display device according to the present invention has a substrate having a plurality of arranged display elements and a wiring layer of a power source on the peripheral side; a bank layer for mutually separating the display elements; an electrode layer for covering the plurality of display elements and the bank layer; and a sealing substrate for further covering the electrode layer by joining the peripheral portion of the substrate and the sealing portion circling around the periphery via a joining element such as an adhesive; wherein the periphery of the sealing substrate is positioned inside the periphery of the substrate, and the peripheral portion of the electrode layer is connected to the wiring of the power source within the sealing portion.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: May 20, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Hidekazu Kobayashi, Osamu Yokoyama, Yojiro Matsueda