Patents by Inventor Sadao Oku

Sadao Oku 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: 9362195
    Abstract: Provided is a semiconductor device including a package having a hollow portion, which can meet the need of reduction in size and thickness. The semiconductor device includes: a resin molded member (1) including a hollow portion (10) having an inner bottom surface on which a semiconductor chip (6) is mounted, a surrounding portion (1b) that surrounds the hollow portion (10), and a bottom surface portion (1a); an inner lead (2e, 2f); and an outer lead (2a, 2b) exposed from the resin molded member (1). The inner lead buried in the molded member (1) includes an L-shaped lead extending portion having a through hole formed therethrough.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: June 7, 2016
    Assignee: SII SEMICONDUCTOR CORPORATION
    Inventors: Koji Tsukagoshi, Sadao Oku, Hiroyuki Fujita, Keiichiro Hayashi, Masaru Akino
  • Patent number: 9240498
    Abstract: Phosphate-based glass doped with copper ions having infrared blocking filter characteristics is formed into particles and is mixed with a transparent encapsulating resin to encapsulate a semiconductor element. The glass particles have a particle diameter four times or more as large as a wavelength of infrared radiation to be blocked. An optical semiconductor device can be obtained having a stable filter characteristics thereof even if an incident light angle changes and is resistant to moisture.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: January 19, 2016
    Assignee: SEIKO INSTRUMENTS INC.
    Inventors: Hiroyuki Fujita, Sadao Oku, Koji Tsukagoshi, Keiichiro Hayashi
  • Patent number: 9029968
    Abstract: An optical sensor element is mounted in a package which includes a glass substrate having a cavity, and a glass lid substrate bonded to the other substrate to close the cavity. The glass substrate with the cavity has metalized wiring patterns on front and rear surfaces thereof, and a through hole filled with metal to form a through-electrode interconnecting the wiring patterns on the front and rear surfaces. A metalized wiring pattern on the rear surface of the glass lid substrate is electrically connected to the wiring pattern on the front surface of the other substrate with an adhesive containing conductive particles. The glass lid substrate is made either of glass having a filter function or glass having a light shielding property with an opening therethrough filled with glass having a filter function.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: May 12, 2015
    Assignee: Seiko Instruments Inc.
    Inventors: Koji Tsukagoshi, Hitoshi Kamamori, Sadao Oku, Hiroyuki Fujita, Keiichiro Hayashi
  • Publication number: 20150076645
    Abstract: Phosphate-based glass doped with copper ions having infrared blocking filter characteristics is formed into particles and is mixed with a transparent encapsulating resin to encapsulate a semiconductor element. The glass particles have a particle diameter four times or more as large as a wavelength of infrared radiation to be blocked. An optical semiconductor device can be obtained having a stable filter characteristics thereof even if an incident light angle changes and is resistant to moisture.
    Type: Application
    Filed: September 15, 2014
    Publication date: March 19, 2015
    Inventors: Hiroyuki FUJITA, Sadao OKU, Koji TSUKAGOSHI, Keiichiro HAYASHI
  • Patent number: 8946664
    Abstract: A low-cost, compact, high-reliability optical sensor device has an optical sensor element mounted in a package comprised of a light shielding glass lid substrate, a part of which has a light filter function, adhered to a light shielding glass substrate having a cavity. In a through hole in the light shielding glass lid substrate, glass having a function of absorbing infrared light and transmitting visible light by its own property is embedded. The light shielding glass substrate is made of glass having light shielding property as its own property.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: February 3, 2015
    Assignee: Seiko Instruments Inc.
    Inventors: Koji Tsukagoshi, Hitoshi Kamamori, Sadao Oku, Hiroyuki Fujita, Keiichiro Hayashi
  • Patent number: 8933386
    Abstract: Provided is a high-reliability, compact, and low-cost optical sensor device. The optical sensor device includes a glass lid substrate (2), a glass substrate (9) with a cavity having divided and exposed through-hole electrodes (5) on the periphery thereof, and an optical sensor element (3) mounted on the glass lid substrate, and has a structure in which the glass lid substrate and the glass substrate with a cavity are bonded together. By hermetically sealing with the glass substrates, high reliability is secured. By using the divided through-hole electrodes, the package size is reduced and the number of devices which can be produced in a batch in the manufacture increases, which enables cost reduction.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: January 13, 2015
    Assignee: Seiko Instruments Inc.
    Inventors: Hitoshi Kamamori, Sadao Oku, Hiroyuki Fujita, Koji Tsukagoshi, Keiichiro Hayashi
  • Publication number: 20150008568
    Abstract: Provided is a semiconductor device including a package having a hollow portion, which can meet the need of reduction in size and thickness. The semiconductor device includes: a resin molded member (1) including a hollow portion (10) having an inner bottom surface on which a semiconductor chip (6) is mounted, a surrounding portion (1b) that surrounds the hollow portion (10), and a bottom surface portion (1a); an inner lead (2e, 2f); and an outer lead (2a, 2b) exposed from the resin molded member (1). The inner lead buried in the molded member (1) includes an L-shaped lead extending portion having a through hole formed therethrough.
    Type: Application
    Filed: June 30, 2014
    Publication date: January 8, 2015
    Inventors: Koji TSUKAGOSHI, Sadao OKU, Hiroyuki FUJITA, Keiichiro HAYASHI, Masaru AKINO
  • Patent number: 8438709
    Abstract: A method for fabricating a piezoelectric vibrator includes inserting a filling member formed with a through hole inside of a ring having a substantially cylindrical shape, and inserting one piece of a lead to the through hole of the filling member to project from both sides of the ring. The method further includes sintering the filling member along with the ring and the lead to integrate in an airtight manner, subjecting an exciting electrode of the piezoelectric vibrating piece to a bump connection with an inner lead portion of the lead projected from the ring, subjecting another exciting electrode on a side of the piezoelectric vibrating piece opposed to the other exciting electrode to wire bonding with the ring, and press-fitting the ring to an opening portion of a case and sealing the piezoelectric vibrating piece connected with the inner lead portion inside of the case in an airtight manner.
    Type: Grant
    Filed: February 17, 2009
    Date of Patent: May 14, 2013
    Assignee: Seiko Instruments Inc.
    Inventors: Masashi Numata, Yasuo Kawada, Sadao Oku
  • Publication number: 20130001409
    Abstract: Provided is a low-cost, compact, high-reliability optical sensor device serving to correspond to the visibility. In the optical sensor device, an optical sensor element is mounted in a package formed by a light shielding glass lid substrate (1) having a filter function in part and a light shielding glass substrate (2) including a cavity. In the light shielding glass lid substrate having the filter function, glass having a function of absorbing infrared light and transmitting visible light by its own property is embedded in part. The light shielding glass substrate is made of glass having light shielding property as its own property.
    Type: Application
    Filed: May 15, 2012
    Publication date: January 3, 2013
    Inventors: Koji TSUKAGOSHI, Hitoshi Kamamori, Sadao Oku, Hiroyuki Fujita, Keiichiro Hayashi
  • Publication number: 20130000355
    Abstract: Provided is a method of manufacturing an optical filter for an illuminance sensor, which has spectral characteristics close to human luminosity characteristics, has high detection accuracy, and can be manufactured at low cost. The method includes the steps of: (a) punching a glass; (b) feeding a small piece of glass (7) having a filter effect; (c) softening the small piece of glass (7); and (d) abrading.
    Type: Application
    Filed: May 15, 2012
    Publication date: January 3, 2013
    Inventors: Sadao Oku, Hiroyuki Fujita, Koji Tsukagoshi, Keiichiro Hayashi, Hitoshi Kamamori, Hiroshi Highuchi
  • Publication number: 20120171368
    Abstract: Bonding between a light-emitting element and electrodes of a substrate is ensured to enhance reliability of a lighting device. In the lighting device of the present invention, a material made of metal alkoxide or polymetalloxane generated from metal alkoxide is used as a coating material covering the light-emitting element. This may enhance reliability of the bonding between the substrate and the light-emitting element while keeping a high light-emission efficiency. Further, when a liquid material made of metal alkoxide is heat-cured by a sol-gel method, the liquid material changes from a liquid, a sol, a gel, to a solid successively to shrink, thereby generating glass being a solid material . With the use of a shrinking force obtained when the gel changes to the solid in the production method, the bonding between the light-emitting element and the electrodes of the substrate can be performed simultaneously with the curing of the coating material.
    Type: Application
    Filed: March 2, 2012
    Publication date: July 5, 2012
    Inventors: Hitoshi Kamamori, Sadao Oku
  • Patent number: 8134173
    Abstract: A lighting device has a glass substrate and a lead frame embedded in the glass substrate. The glass substrate has a front surface, a side surface and a rear surface, the front surface having a recess portion with a bottom surface. The lead frame has a portion exposed on the side surface of the glass substrate and a portion exposed on the bottom surface of the recess portion. A line width of a region of the portion of the lead frame exposed on the bottom surface of the recess portion is narrower than a line width of a region of the portion of the lead frame exposed on the side surface of the glass substrate. A light emitting element is mounted in the recess portion of the glass substrate and is electrically connected with the portion of the lead frame exposed on the bottom surface of the recess portion. A sealing material covers the light emitting element.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: March 13, 2012
    Assignee: Seiko Instruments Inc.
    Inventors: Hitoshi Kamamori, Sadao Oku, Hiroyuki Fujita, Keiichiro Hayashi
  • Publication number: 20110215366
    Abstract: A light emitting device (1) includes a glass substrate (4) having a recess (2) in a front surface, and a lead frame (5a). A copper material (7) is embedded so that the copper material (7) passes through the lead frame (5a). A light emitting element (6) is mounted on the copper material (7). The glass substrate (4) and the lead frame (5a) are bonded to each other so that the light emitting element (6) is exposed from the recess of the glass substrate (4). Thus, the copper material is embedded in a pass-through manner directly under a region of the lead frame where the light emitting element is disposed. Therefore, adhesion between the glass substrate and the lead frame is ensured, and heat generated by the light emitting element may be efficiently radiated from the rear surface of the glass substrate.
    Type: Application
    Filed: February 17, 2011
    Publication date: September 8, 2011
    Inventors: Koji Tsukagoshi, Hitoshi Kamamori, Sadao Oku, Hiroyuki Fujita, Keiichiro Hayashi
  • Publication number: 20110210370
    Abstract: On a through-electrode (7) formed by filling a conductive material into a though hole of a substrate, nano-metal particles are adhered to form a connection electrode (9). An LED element (3) is electrically connected to the through-electrode (7) via the connection electrode (9). The nano-metal particles can be applied into a desired shape by an inkjet method or a dispenser method, and hence a light emitting device (1) having high electrical connection reliability is realized at low cost.
    Type: Application
    Filed: February 17, 2011
    Publication date: September 1, 2011
    Inventors: Hitoshi Kamamori, Keiichiro Hayashi, Sadao Oku, Hiroyuki Fujita, Koji Tsukagoshi
  • Publication number: 20100163919
    Abstract: Provided is a lighting device which includes a lead frame embedded in a glass material and has high reliability. The lighting device has a structure in which a light emitting element is mounted in a recess portion formed on a surface of a glass substrate and a sealing material is provided to cover the light emitting element. The lead frame is embedded in the glass substrate so as to be exposed on a side surface of the glass substrate and a bottom surface of the recess portion. A portion of the lead frame which is exposed in the recess portion is electrically connected with the light emitting element. With the structure as described above, the durability of the lighting device is improved.
    Type: Application
    Filed: December 15, 2009
    Publication date: July 1, 2010
    Inventors: Hitoshi Kamamori, Sadao Oku, Hiroyuki Fujita, Keiichiro Hayashi
  • Patent number: 7719171
    Abstract: A method of fabricating a hermetic terminal having an annular ring, a lead arranged to penetrate through the ring in which one end side thereof is an inner lead portion electrically connected to a piezoelectric vibrating piece and the other end side thereof is an outer lead portion electrically connected to outside as the ring is between them, and a filler fixing the lead to the ring, wherein the hermetic terminal seals the piezoelectric vibrating piece inside a case, the method includes the steps of: applying plating to a hermetic terminal intermediate having the lead fixed in the ring with the filler to plate the ring and the lead; setting the hermetic terminal intermediate after subjected to plating on a holding member; and flattening an end part of an inner lead portion in the lead to form a stair portion in the hermetic terminal intermediate set on the holding member.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: May 18, 2010
    Assignee: Seiko Instruments Inc.
    Inventors: Sadao Oku, Mitsuo Akiba
  • Publication number: 20100079050
    Abstract: A light emitting device includes: a glass package (2) having a recess (5) in its center; a through-hole electrode (4) formed by filling a through hole (3), which is formed at a bottom of the recess (5), with a conductive material; a light emitting diode element (6) received in the recess (5) and mounted on the through-hole electrode (4); an insulating multilayer interference film (7) formed on an inner wall surface and a bottom surface of the recess (5); and a sealing material for sealing the light emitting diode element. With this structure, the light emitting device is improved in reliability.
    Type: Application
    Filed: September 28, 2009
    Publication date: April 1, 2010
    Inventors: Hitoshi Kamamori, Sadao Oku, Keiichiro Hayashi
  • Publication number: 20090200572
    Abstract: Bonding between a light-emitting element and electrodes of a substrate is ensured to enhance reliability of a lighting device. In the lighting device of the present invention, a material made of metal alkoxide or polymetalloxane generated from metal alkoxide is used as a coating material covering the light-emitting element. This may enhance reliability of the bonding between the substrate and the light-emitting element while keeping a high light-emission efficiency. Further, when a liquid material made of metal alkoxide is heat-cured by a sol-gel method, the liquid material changes from a liquid, a sol, a gel, to a solid successively to shrink, thereby generating glass being a solid material. With the use of a shrinking force obtained when the gel changes to the solid in the production method, the bonding between the light-emitting element and the electrodes of the substrate can be performed simultaneously with the curing of the coating material.
    Type: Application
    Filed: February 5, 2009
    Publication date: August 13, 2009
    Inventors: Hitoshi Kamamori, Sadao Oku
  • Publication number: 20090144956
    Abstract: To achieve small-sized formation of a piezoelectric vibrator while preventing exciting electrodes provided at both faces of the piezoelectric vibrating piece from being shortcircuited to each other and enabling to fabricate the piezoelectric vibrating piece easily, there is provided a piezoelectric vibrator 1 including a case 3 in a shape of a bottomed cylinder having an opening portion 3a and having a conductivity, a ring 12 substantially in a cylindrical shape press-fitted to the opening portion 3a of the case 3 and having a conductivity, one piece of a lead 13 inserted to the ring 12 and having an inner lead portion 15 and an outer lead portion 16, a filling member 14 having an insulting property for sealing an interval between the lead 13 and the ring 12 in airtight, and a piezoelectric vibrating piece 2 which is constituted by substantially a plate-like shape arranged at inside of the case 3 and includes exciting electrodes 8, 9 at both faces thereof and in which the exciting electrode 8 is supported by
    Type: Application
    Filed: February 17, 2009
    Publication date: June 11, 2009
    Inventors: Masashi Numata, Yasuo Kawada, Sadao Oku
  • Patent number: 7511405
    Abstract: To achieve small-sized formation of a piezoelectric vibrator while preventing exciting electrodes provided at both faces of the piezoelectric vibrating piece from being shortcircuited to each other and enabling to fabricate the piezoelectric vibrating piece easily, there is provided a piezoelectric vibrator 1 including a case 3 in a shape of a bottomed cylinder having an opening portion 3a and having a conductivity, a ring 12 substantially in a cylindrical shape press-fitted to the opening portion 3a of the case 3 and having a conductivity, one piece of a lead 13 inserted to the ring 12 and having an inner lead portion 15 and an outer lead portion 16, a filling member 14 having an insulting property for sealing an interval between the lead 13 and the ring 12 in airtight, and a piezoelectric vibrating piece 2 which is constituted by substantially a plate-like shape arranged at inside of the case 3 and includes exciting electrodes 8, 9 at both faces thereof and in which the exciting electrode 8 is supported by
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: March 31, 2009
    Assignee: Seiko Instruments Inc.
    Inventors: Masashi Numata, Yasuo Kawada, Sadao Oku