Patents by Inventor Masaharu Muramatsu

Masaharu Muramatsu 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: 20150187649
    Abstract: A method for manufacturing a solid-state imaging device comprises a first step of preparing an imaging element having a second principal surface having an electrode arranged thereon, and a photoelectric converter part configured to photoelectrically convert the incident energy line so as to generate a signal charge; a second step of preparing a support substrate, provided with a through hole extending in a thickness direction thereof, having a third principal surface; a third step of aligning the imaging element and the support substrate with each other so that the electrode is exposed out of the through hole while the second and third principal surfaces oppose each other and joining the imaging element and the support substrate to each other; and a fourth step of arranging a conductive ball-shaped member in the through hole and electrically connecting the ball-shaped member to the electrode after the third step.
    Type: Application
    Filed: February 21, 2013
    Publication date: July 2, 2015
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Yasuhito Yoneta, Ryoto Takisawa, Shingo Ishihara, Hisanori Suzuki, Masaharu Muramatsu
  • Patent number: 9054000
    Abstract: A solid-state imaging device 2A includes a CCD-type solid-state imaging element 10 having an imaging plane 12 formed of M×N pixels that are two-dimensionally arrayed in M rows and N columns and N signal readout circuits 20 arranged on one end side in the column direction for each of the columns with respect to the plane 12 and for outputting electrical signals according to the magnitudes of charges taken out of the respective columns, respectively, a C-MOS-type semiconductor element 50 for digital-converting and sequentially outputting as serial signals electrical signals output from the circuits 20 for each of the columns, a heat transfer member 80 having a main surface 81a and a back surface 81b, and a cooling block 84 provided on the surface 81b, and the semiconductor element 50 and the surface 81a of the heat transfer member 80 are bonded to each other.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: June 9, 2015
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Motohiro Suyama, Akiomi Ujima, Kentaro Maeta, Hisanori Suzuki, Masaharu Muramatsu, Fumio Iwase
  • Publication number: 20150155314
    Abstract: A semiconductor substrate is provided with a plurality of photosensitive regions on a first principal surface side. An insulating film has a third principal surface and a fourth principal surface opposed to each other, and is arranged on the semiconductor substrate so that the third principal surface is opposed to the first principal surface. A cross section parallel to a thickness direction of the semiconductor substrate, of a region corresponding to each photosensitive region in the first principal surface is a corrugated shape in which concave curves and convex curves are alternately continuous. A cross section parallel to a thickness direction of the insulating film, of a region corresponding to each photosensitive region in the third principal surface is a corrugated shape in which concave curves and convex curves are alternately continuous corresponding to the first principal surface. The fourth principal surface is flat.
    Type: Application
    Filed: March 1, 2013
    Publication date: June 4, 2015
    Inventors: Shin-ichiro Takagi, Yasuhito Yoneta, Kenichi Sugimoto, Hisanori Suzuki, Masaharu Muramatsu
  • Patent number: 9048164
    Abstract: A solid state imaging device includes a P-type semiconductor substrate 1A, a P-type epitaxial layer 1B grown on the semiconductor substrate 1A, an imaging region VR grown within the epitaxial layer 1B, and an N-type semiconductor region 1C grown within the epitaxial layer 1B. The solid state imaging device further includes a horizontal shift register HR that transmits a signal from the imaging region VR, and a P-type well region 1D formed within the epitaxial layer 1B. The N-type semiconductor region 1C extends in the well region 1D. A P-type impurity concentration in the well region 1D is higher than a P-type impurity concentration in the epitaxial layer 1B. A multiplication register EM that multiplies electrons from the horizontal shift register HR is formed in the well region 1D.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: June 2, 2015
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Hisanori Suzuki, Yasuhito Yoneta, Shin-ichiro Takagi, Kentaro Maeta, Masaharu Muramatsu
  • Publication number: 20150137301
    Abstract: A method for manufacturing a solid-state imaging device comprises a first step of preparing an imaging element including a second principal surface having an electrode arranged thereon, and a photoelectric converter part configured to photoelectrically convert the incident energy line so as to generate a signal charge; a second step of preparing a support substrate, provided with at least one through hole extending in a thickness direction thereof, having a third principal surface; a third step of aligning the imaging element and the support substrate with each other so that the one electrode is exposed out of the one through hole while the second and third principal surfaces oppose each other and joining the imaging element and the support substrate to each other; and a fourth step of embedding a conductive member in the through hole after the third step.
    Type: Application
    Filed: February 21, 2013
    Publication date: May 21, 2015
    Inventors: Yasuhito Yoneta, Ryoto Takisawa, Shingo Ishihara, Hisanori Suzuki, Masaharu Muramatsu
  • Publication number: 20150130004
    Abstract: A portion on the light exit end surface side of a fiber optic plate includes a first portion and a second portion. The first portion corresponds to a peripheral portion of a semiconductor photodetecting element. The second portion corresponds to a thin portion of the semiconductor photodetecting element and projects more toward the semiconductor photodetecting element than the first portion. A height of a step made between the first portion and the second portion of the fiber optic plate is lower than a height of a step made between the thin portion and the peripheral portion of the semiconductor photodetecting element. The semiconductor photodetecting element and the fiber optic plate are fixed by a resin, in a state in which the first portion and the peripheral portion are in contact and in which the second portion and the thin portion are separated.
    Type: Application
    Filed: March 13, 2013
    Publication date: May 14, 2015
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Hiroya Kobayashi, Masaharu Muramatsu
  • Patent number: 9000492
    Abstract: In a back-illuminated solid-state image pickup device including a semiconductor substrate 4 having a light incident surface at a back surface side and a charge transfer electrode 2 disposed at a light detection surface at an opposite side of the semiconductor substrate 4 with respect to the light incident surface, the light detection surface has an uneven surface. By the light detection surface having the uneven surface, etaloning is suppressed because lights reflected by the uneven surface have scattered phase differences with respect to a phase of incident light and resulting interfering lights offset each other. A high quality image can thus be acquired by the back-illuminated solid-state image pickup device.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: April 7, 2015
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Hisanori Suzuki, Yasuhito Yoneta, Yasuhito Miyazaki, Masaharu Muramatsu, Koei Yamamoto
  • Patent number: 8947587
    Abstract: A holding structure 100 for an image pickup device includes a back-incident type image pickup device 1 and a holding member 51 that holds the image pickup element 1, and the image pickup device 1 has an image pickup element 11 that performs imaging and a wiring board 12 electrically connected to the image pickup element 11. The holding member 51 is freely attachably and detachably attached to a side face 27 of the wiring board 12, at each of the opposing side faces 27a, 27a in the wiring board 12, a to-be-fitted portion 28 is formed, and the to-be-fitted portion 28 and a fitting portion 54 formed at the holding member 51 are fitted together. This relieves, even when an impact is applied to the image pickup device 1 during an inspection, delivery, etc., the impact to be applied to the wiring board 12 and the image pickup element 11 by the holding member 51 while suppressing the holding member 51 from coming off.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: February 3, 2015
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Hiroya Kobayashi, Yasuhito Miyazaki, Masaharu Muramatsu
  • Patent number: 8884226
    Abstract: A photodetector of an OCT device is provided with: a silicon substrate comprised of a semiconductor of a first conductivity type, having a first principal surface and a second principal surface opposed to each other, and having a semiconductor region of a second conductivity type formed on the first principal surface side; and charge transfer electrodes provided on the first principal surface and transferring generated charges. In the silicon substrate, an accumulation layer of the first conductivity type having a higher impurity concentration than the silicon substrate is formed on the second principal surface side, and an irregular asperity is formed in a region opposed to at least the semiconductor region, in the second principal surface. The region in which the irregular asperity is formed on the second principal surface of the silicon substrate is optically exposed.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: November 11, 2014
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Yasuhito Miyazaki, Yasuhito Yoneta, Hisanori Suzuki, Masaharu Muramatsu, Toshihisa Atsumi
  • Patent number: 8841714
    Abstract: A solid state imaging device 1 is provided with a photoelectric conversion portion 2 having a plurality of photosensitive regions 7, and a potential gradient forming portion 3 having an electroconductive member 8 arranged opposite to the photosensitive regions 7. A planar shape of each photosensitive region 7 is a substantially rectangular shape. The photosensitive regions 7 are juxtaposed in a first direction intersecting with the long sides. The potential gradient forming portion 3 forms a potential gradient becoming higher along a second direction from one of the short sides to the other of the short sides of the photosensitive regions 7. The electroconductive member 8 includes a first region 8a extending in the second direction and having a first electric resistivity, and a second region 8b extending in the second direction and having a second electric resistivity smaller than the first electric resistivity.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: September 23, 2014
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Tomohiro Ikeya, Yasuhito Yoneta, Hisanori Suzuki, Masaharu Muramatsu
  • Patent number: 8754355
    Abstract: A solid-state imaging device 1 according to one embodiment of the present invention is a charge multiplying solid-state imaging device, and includes an imaging area 10 that generates a charge according to the amount of incident light, a plurality of output register units 21 to 24 that receive the charge from the imaging area 10, and a plurality of multiplication register units 31 to 34 that multiply charges from the output registers 21 to 24, respectively, and the multiplication register units 31 to 34 are different in the number of multiplication stages from each other.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: June 17, 2014
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Hisanori Suzuki, Yasuhito Yoneta, Shin-ichiro Takagi, Kentaro Maeta, Masaharu Muramatsu
  • Publication number: 20140091421
    Abstract: A solid-state image pickup element is provided with a semiconductor substrate having a photosensitive region, a plurality of first electrode pads arrayed on a principal face of the semiconductor substrate, a plurality of second electrode pads arrayed in a direction along a direction in which the plurality of first electrode pads are arrayed, on the principal face of the semiconductor substrate, and a plurality of interconnections connecting the plurality of first electrode pads and the plurality of second electrode pads in one-to-one correspondence. The plurality of interconnections connect the first and second electrode pads so that each interconnection connects the first electrode pad and the second electrode pad in a positional relation of line symmetry with respect to a center line perpendicular to the array directions of the plurality of first and second electrode pads.
    Type: Application
    Filed: June 19, 2012
    Publication date: April 3, 2014
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Tomohiro Ikeya, Toshiyuki Fukui, Hisanori Suzuki, Masaharu Muramatsu
  • Patent number: 8629485
    Abstract: A semiconductor photodetection element SP has a silicon substrate 21 comprised of a semiconductor of a first conductivity type, having a first principal surface 21a and a second principal surface 21b opposed to each other, and having a semiconductor layer 23 of a second conductivity type formed on the first principal surface 21a side; and charge transfer electrodes 25 provided on the first principal surface 21a and adapted to transfer generated charge. In the silicon substrate 21, an accumulation layer 31 of the first conductivity type having a higher impurity concentration than the silicon substrate 21 is formed on the second principal surface 21b side and an irregular asperity 10 is formed in a region opposed to at least the semiconductor region 23, in the second principal surface 21b. The region where the irregular asperity 10 is formed in the second principal surface 21b of the silicon substrate 21 is optically exposed.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: January 14, 2014
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Kazuhisa Yamamura, Akira Sakamoto, Terumasa Nagano, Yasuhito Miyazaki, Yasuhito Yoneta, Hisanori Suzuki, Masaharu Muramatsu
  • Patent number: 8624301
    Abstract: In a back-illuminated solid-state image pickup device including a semiconductor substrate 4 having a light incident surface at a back surface side and a plurality of charge transfer electrodes 2 disposed at a light detection surface at an opposite side of the semiconductor substrate 4 with respect to the light incident surface, a plurality of openings OP for transmitting light are formed between charge transfer electrodes 2 that are adjacent to each other. Also, a plurality of openings OP for transmitting light may be formed inside each charge transfer electrode 2.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: January 7, 2014
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Hisanori Suzuki, Yasuhito Yoneta, Masaharu Muramatsu, Koei Yamamoto
  • Patent number: 8599296
    Abstract: A solid-state imaging device 1 according to one embodiment of the present invention is a charge multiplying solid-state imaging device, and includes an imaging area 10 that generates a charge according to the amount of incident light, an output register unit 20 that receives the charge from the imaging area 10, a multiplication register unit 40 that multiplies the charge from the output register 20, and at least one charge dispersion means 71 that disperses the charge input to the multiplication register unit 40 in a width direction perpendicular to a transfer direction.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: December 3, 2013
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Hisanori Suzuki, Yasuhito Yoneta, Shin-ichiro Takagi, Kentaro Maeta, Masaharu Muramatsu
  • Publication number: 20130292742
    Abstract: A solid state imaging device 1 is provided with a photoelectric conversion portion 2 having a plurality of photosensitive regions 7, and a potential gradient forming portion 3 having an electroconductive member 8 arranged opposite to the photosensitive regions 7. A planar shape of each photosensitive region 7 is a substantially rectangular shape. The photosensitive regions 7 are juxtaposed in a first direction intersecting with the long sides. The potential gradient forming portion 3 forms a potential gradient becoming higher along a second direction from one of the short sides to the other of the short sides of the photosensitive regions 7. The electroconductive member 8 includes a first region 8a extending in the second direction and having a first electric resistivity, and a second region 8b extending in the second direction and having a second electric resistivity smaller than the first electric resistivity.
    Type: Application
    Filed: November 11, 2011
    Publication date: November 7, 2013
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Tomohiro Ikeya, Yasuhito Yoneta, Hisanori Suzuki, Masaharu Muramatsu
  • Patent number: 8575559
    Abstract: An X-ray imaging device 1 includes a back-illuminated solid-state image pickup element 10 including an X-ray detection section having a plurality of detection pixels arrayed for detecting incident X-rays formed on one surface 11 side, and an X-ray incident surface on the other surface 12, and a shielding layer 20 provided on the incident surface 12 of the image pickup element 10 and to be used for blocking light rays with wavelengths longer than the wavelength of X-rays as a detection target. The shielding layer 20 includes a first aluminum layer 21 provided directly on the incident surface 12, a second aluminum layer 22 provided on the first aluminum layer 21, and an ultraviolet light shielding layer 25 that is provided between the first and second aluminum layers 21 and 22 and is used for blocking ultraviolet light rays. Accordingly, an X-ray imaging device capable of suppressing the influence of detection of noise light in X-ray detection is realized.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: November 5, 2013
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Shin-ichiro Takagi, Yasuhito Yoneta, Hisanori Suzuki, Masaharu Muramatsu, Hiroshi Tsunemi, Takeshi Tsuru, Tadayasu Dotani, Takayoshi Kohmura
  • Publication number: 20130285188
    Abstract: A solid state imaging device 1 is provided with a photoelectric conversion portion 2 having photosensitive regions 13, and a potential gradient forming portion 3 arranged opposite to the photosensitive regions 13. A planar shape of each photosensitive region 13 is a substantially rectangular shape composed of two long sides and two short sides. The photosensitive regions 13 are juxtaposed in a first direction intersecting with the long sides. The potential gradient forming portion 3 has a first potential gradient forming region to form a potential gradient becoming lower along a second direction from one of the short sides to the other of the short sides, and a second potential gradient forming region to form a potential gradient becoming higher along the second direction. The second potential gradient forming region is arranged next to the first potential gradient forming region in the second direction.
    Type: Application
    Filed: November 11, 2011
    Publication date: October 31, 2013
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Tomohiro Ikeya, Yasuhito Yoneta, Hisanori Suzuki, Masaharu Muramatsu
  • Publication number: 20130270609
    Abstract: A solid-state imaging device is provided with a plurality of photoelectric converting portions each having a photosensitive region and an electric potential gradient forming region, and which are juxtaposed so as to be along a direction intersecting with a predetermined direction, a plurality of buffer gate portions each arranged corresponding to a photoelectric converting portion and on the side of the other short side forming a planar shape of the photosensitive region, and accumulates a charge generated in the photosensitive region of the corresponding photoelectric converting portion, and a shift register which acquires charges respectively transferred from the plurality of buffer gate portions, and transfers the charges in the direction intersecting with the predetermined direction, to output the charges. The buffer gate portion has at least two gate electrodes to which predetermined electric potentials are respectively applied so as to increase potential toward the predetermined direction.
    Type: Application
    Filed: October 31, 2011
    Publication date: October 17, 2013
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Shin-ichiro Takagi, Yasuhito Yoneta, Hisanori Suzuki, Masaharu Muramatsu
  • Patent number: 8552352
    Abstract: A solid-state imaging device of an embodiment includes an imaging region, an output register, a corner register, a multiplication register, a first amplifier, a second amplifier, and a valve gate electrode. The output register is a transfer register that receives a charge transferred from the imaging region to transfer the charge. The output register is capable of selectively transferring a charge in one direction and in the other direction opposite to the one direction. The corner register transfers a charge transferred in one direction from the output register. The multiplication register receives a charge from the corner register and generates and transfers a multiplied charge. The first amplifier generates a signal based on a multiplied charge from the multiplication register. The second amplifier generates a signal based on a charge transferred in the other direction by the output register.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: October 8, 2013
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Hisanori Suzuki, Yasuhito Yoneta, Shin-ichiro Takagi, Kentaro Maeta, Masaharu Muramatsu