Patents by Inventor Tadayuki Dofuku

Tadayuki Dofuku 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: 11971633
    Abstract: An electrode structure includes: a plurality of pixel electrodes arranged separately from each other; and a plurality of dielectric layers laminated in a first direction with respect to the plurality of pixel electrodes, in which the plurality of dielectric layers includes: a first dielectric layer that spreads over the plurality of pixel electrodes in a direction intersecting with the first direction; and a second dielectric layer that includes dielectric material having a refractive index higher than that of the first dielectric layer, sandwiches the first dielectric layer together with the plurality of pixel electrodes, and has a slit at a position overlapping space between pixel electrodes adjacent when viewed from the first direction.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: April 30, 2024
    Assignees: SONY SEMICONDUCTOR SOLUTIONS CORPORATION, SONY GROUP CORPORATION
    Inventors: Takashi Sakairi, Tomoaki Honda, Tsuyoshi Okazaki, Keiichi Maeda, Chiho Araki, Katsunori Dai, Shunsuke Narui, Kunihiko Hikichi, Kouta Fukumoto, Toshiaki Okada, Takuma Matsuno, Yuu Kawaguchi, Yuuji Adachi, Koichi Amari, Hideki Kawaguchi, Seiya Haraguchi, Takayoshi Masaki, Takuya Fujino, Tadayuki Dofuku, Yosuke Takita, Kazuhiro Tamura, Atsushi Tanaka
  • Patent number: 11610924
    Abstract: The present technology relates to a solid-state imaging device capable of inhibiting peeling of a fixed charge film while inhibiting dark current, a method of manufacturing the same, and an electronic device. A solid-state imaging device provided with a semiconductor substrate in which a plurality of photodiodes is formed, a groove portion formed in a depth direction from a light incident side for forming an element separating unit between adjacent photoelectric conversion elements on the semiconductor substrate, a first fixed charge film formed so as to cover a surface of a planar portion on the light incident side of the semiconductor substrate, and a second fixed charge film formed so as to cover an inner wall surface of the groove portion formed on the semiconductor substrate is provided. The present technology is applicable to a backside illumination CMOS image sensor, for example.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: March 21, 2023
    Assignee: SONY CORPORATION
    Inventor: Tadayuki Dofuku
  • Publication number: 20220326578
    Abstract: An electrode structure includes: a plurality of pixel electrodes arranged separately from each other; and a plurality of dielectric layers laminated in a first direction with respect to the plurality of pixel electrodes, in which the plurality of dielectric layers includes: a first dielectric layer that spreads over the plurality of pixel electrodes in a direction intersecting with the first direction; and a second dielectric layer that includes dielectric material having a refractive index higher than that of the first dielectric layer, sandwiches the first dielectric layer together with the plurality of pixel electrodes, and has a slit at a position overlapping space between pixel electrodes adjacent when viewed from the first direction.
    Type: Application
    Filed: May 15, 2020
    Publication date: October 13, 2022
    Inventors: TAKASHI SAKAIRI, TOMOAKI HONDA, TSUYOSHI OKAZAKI, KEIICHI MAEDA, CHIHO ARAKI, KATSUNORI DAI, SHUNSUKE NARUI, KUNIHIKO HIKICHI, KOUTA FUKUMOTO, TOSHIAKI OKADA, TAKUMA MATSUNO, YUU KAWAGUCHI, YUUJI ADACHI, KOICHI AMARI, HIDEKI KAWAGUCHI, SEIYA HARAGUCHI, TAKAYOSHI MASAKI, TAKUYA FUJINO, TADAYUKI DOFUKU, YOSUKE TAKITA, KAZUHIRO TAMURA, ATSUSHI TANAKA
  • Publication number: 20210082984
    Abstract: The present technology relates to a solid-state imaging device capable of inhibiting peeling of a fixed charge film while inhibiting dark current, a method of manufacturing the same, and an electronic device. A solid-state imaging device provided with a semiconductor substrate in which a plurality of photodiodes is formed, a groove portion formed in a depth direction from a light incident side for forming an element separating unit between adjacent photoelectric conversion elements on the semiconductor substrate, a first fixed charge film formed so as to cover a surface of a planar portion on the light incident side of the semiconductor substrate, and a second fixed charge film formed so as to cover an inner wall surface of the groove portion formed on the semiconductor substrate is provided. The present technology is applicable to a backside illumination CMOS image sensor, for example.
    Type: Application
    Filed: December 1, 2020
    Publication date: March 18, 2021
    Applicant: Sony Corporation
    Inventor: Tadayuki DOFUKU
  • Patent number: 10879287
    Abstract: The present technology relates to a solid-state imaging device capable of inhibiting peeling of a fixed charge film while inhibiting dark current, a method of manufacturing the same, and an electronic device. A solid-state imaging device provided with a semiconductor substrate in which a plurality of photodiodes is formed, a groove portion formed in a depth direction from a light incident side for forming an element separating unit between adjacent photoelectric conversion elements on the semiconductor substrate, a first fixed charge film formed so as to cover a surface of a planar portion on the light incident side of the semiconductor substrate, and a second fixed charge film formed so as to cover an inner wall surface of the groove portion formed on the semiconductor substrate is provided. The present technology is applicable to a backside illumination CMOS image sensor, for example.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: December 29, 2020
    Assignee: SONY CORPORATION
    Inventor: Tadayuki Dofuku
  • Publication number: 20200013816
    Abstract: The present technology relates to a solid-state imaging device capable of inhibiting peeling of a fixed charge film while inhibiting dark current, a method of manufacturing the same, and an electronic device. A solid-state imaging device provided with a semiconductor substrate in which a plurality of photodiodes is formed, a groove portion formed in a depth direction from a light incident side for forming an element separating unit between adjacent photoelectric conversion elements on the semiconductor substrate, a first fixed charge film formed so as to cover a surface of a planar portion on the light incident side of the semiconductor substrate, and a second fixed charge film formed so as to cover an inner wall surface of the groove portion formed on the semiconductor substrate is provided. The present technology is applicable to a backside illumination CMOS image sensor, for example.
    Type: Application
    Filed: September 17, 2019
    Publication date: January 9, 2020
    Applicant: Sony Corporation
    Inventor: Tadayuki DOFUKU
  • Patent number: 10453884
    Abstract: The present technology relates to a solid-state imaging device capable of inhibiting peeling of a fixed charge film while inhibiting dark current, a method of manufacturing the same, and an electronic device. A solid-state imaging device provided with a semiconductor substrate in which a plurality of photodiodes is formed, a groove portion formed in a depth direction from a light incident side for forming an element separating unit between adjacent photoelectric conversion elements on the semiconductor substrate, a first fixed charge film formed so as to cover a surface of a planar portion on the light incident side of the semiconductor substrate, and a second fixed charge film formed so as to cover an inner wall surface of the groove portion formed on the semiconductor substrate is provided. The present technology is applicable to a backside illumination CMOS image sensor, for example.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: October 22, 2019
    Assignee: Sony Corporation
    Inventor: Tadayuki Dofuku
  • Publication number: 20180301490
    Abstract: The present technology relates to a solid-state imaging device capable of inhibiting peeling of a fixed charge film while inhibiting dark current, a method of manufacturing the same, and an electronic device.—A solid-state imaging device provided with a semiconductor substrate in which a plurality of photodiodes is formed, a groove portion formed in a depth direction from a light incident side for forming an element separating unit between adjacent photoelectric conversion elements on the semiconductor substrate, a first fixed charge film formed so as to cover a surface of a planar portion on the light incident side of the semiconductor substrate, and a second fixed charge film formed so as to cover an inner wall surface of the groove portion formed on the semiconductor substrate is provided. The present technology is applicable to a backside illumination CMOS image sensor, for example.
    Type: Application
    Filed: November 6, 2015
    Publication date: October 18, 2018
    Inventor: Tadayuki DOFUKU
  • Patent number: 9263493
    Abstract: Provided is an image pickup element, including: condenser lenses made of a resin containing fine metal particles; photoelectric conversion elements formed in a silicon substrate and each configured to photoelectrically convert incident light that enter from an outside through corresponding one of the condenser lenses; and a protective film made of a silicon compound, the protective film being formed between the condenser lenses and the silicon substrate.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: February 16, 2016
    Assignee: SONY CORPORATION
    Inventors: Sintaro Nakajiki, Yukihiro Sayama, Yoshinori Toumiya, Tadayuki Dofuku, Toyomi Jinwaki
  • Patent number: 9124822
    Abstract: Disclosed herein is a solid-state image pickup device including a solid-state image pickup element operable to produce an electric charge according to the amount of light received, a lens disposed on the upper side of a pixel of the solid-state image pickup element, a protective film which covers the upper side of the lens and a surface of which is flattened, and a surface film which is formed at the surface of the protective film and which is higher in hydrophilicity than the inside of the protective film.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: September 1, 2015
    Assignee: SONY CORPORATION
    Inventors: Youichi Otsuka, Kazuaki Ogawa, Taichi Natori, Atsushi Yamamoto, Yasunori Koshino, Hitomi Kamiya, Yoshinori Toumiya, Tadayuki Dofuku, Ina Hori, Takayuki Shoya, Yukihiro Sayama, Masaya Shimoji, Yoshikazu Tanaka
  • Publication number: 20150035105
    Abstract: Provided is an image pickup element, including: condenser lenses made of a resin containing fine metal particles; photoelectric conversion elements formed in a silicon substrate and each configured to photoelectrically convert incident light that enter from an outside through corresponding one of the condenser lenses; and a protective film made of a silicon compound, the protective film being formed between the condenser lenses and the silicon substrate.
    Type: Application
    Filed: July 24, 2014
    Publication date: February 5, 2015
    Inventors: Sintaro Nakajiki, Yukihiro Sayama, Yoshinori Toumiya, Tadayuki Dofuku, Toyomi Jinwaki
  • Patent number: 8884392
    Abstract: Disclosed herein is a method of manufacturing a solid state imaging device, including the steps of: forming a light receiving portion in a light receiving area of a semiconductor substrate; forming a pad portion in a pad area of the semiconductor substrate; forming a microlens material layer over the light receiving portion and the pad portion; providing the microlens material layer with a microlens corresponding to the light receiving portion; forming a low-reflection material layer on the microlens material layer; etching the microlens material layer and the low-reflection material layer over the pad portion to form an opening; and imparting hydrophilicity to a surface of the low-reflection material layer and an inside portion of the opening by a normal temperature oxygen radical treatment.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: November 11, 2014
    Assignee: Sony Corporation
    Inventors: Yoshinori Toumiya, Ina Hori, Tadayuki Dofuku, Hitomi Kamiya, Atsushi Yamamoto, Taichi Natori
  • Publication number: 20140084406
    Abstract: Disclosed herein is a method of manufacturing a solid state imaging device, including the steps of: forming a light receiving portion in a light receiving area of a semiconductor substrate; forming a pad portion in a pad area of the semiconductor substrate; forming a microlens material layer over the light receiving portion and the pad portion; providing the microlens material layer with a microlens corresponding to the light receiving portion; forming a low-reflection material layer on the microlens material layer; etching the microlens material layer and the low-reflection material layer over the pad portion to form an opening; and imparting hydrophilicity to a surface of the low-reflection material layer and an inside portion of the opening by a normal temperature oxygen radical treatment.
    Type: Application
    Filed: November 22, 2013
    Publication date: March 27, 2014
    Applicant: Sony Corporation
    Inventors: Yoshinori Toumiya, Ina Hori, Tadayuki Dofuku, Hitomi Kamiya, Atsushi Yamamoto, Taichi Natori
  • Patent number: 8603852
    Abstract: Disclosed herein is a method of manufacturing a solid state imaging device, including the steps of: forming a light receiving portion in a light receiving area of a semiconductor substrate; forming a pad portion in a pad area of the semiconductor substrate; forming a microlens material layer over the light receiving portion and the pad portion; providing the microlens material layer with a microlens corresponding to the light receiving portion; forming a low-reflection material layer on the microlens material layer; etching the microlens material layer and the low-reflection material layer over the pad portion to form an opening; and imparting hydrophilicity to a surface of the low-reflection material layer and an inside portion of the opening by a normal temperature oxygen radical treatment.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: December 10, 2013
    Assignee: Sony Corporation
    Inventors: Yoshinori Toumiya, Ina Hori, Tadayuki Dofuku, Hitomi Kamiya, Atsushi Yamamoto, Taichi Natori
  • Publication number: 20130235230
    Abstract: Disclosed herein is a solid-state image pickup device including a solid-state image pickup element operable to produce an electric charge according to the amount of light received, a lens disposed on the upper side of a pixel of the solid-state image pickup element, a protective film which covers the upper side of the lens and a surface of which is flattened, and a surface film which is formed at the surface of the protective film and which is higher in hydrophilicity than the inside of the protective film.
    Type: Application
    Filed: April 10, 2013
    Publication date: September 12, 2013
    Applicant: Sony Corporation
    Inventors: Youichi Otsuka, Kazuaki Ogawa, Taichi Natori, Atsushi Yamamoto, Yasunori Koshino, Hitomi Kamiya, Yoshinori Toumiya, Tadayuki Dofuku, Ina Hori, Takayuki Shoya, Yukihiro Sayama, Masaya Shimoji, Yoshikazu Tanaka
  • Patent number: 8455291
    Abstract: A method of manufacturing a solid state imaging device having a photo-electric conversion portion array and a transfer electrode array, these arrays being provided in parallel to each other, upper surfaces and side wall surfaces of the transfer electrode array being covered with a light-shielding layer, and a transparent layer showing an oxidizing property at the time of film formation, the transparent layer being formed on the photo-electric conversion parts and the light-shielding layer.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: June 4, 2013
    Assignee: Sony Corporation
    Inventors: Takeshi Takeda, Tadayuki Dofuku, Kenji Takeo
  • Patent number: 8432010
    Abstract: Disclosed herein is a solid-state image pickup device including a solid-state image pickup element operable to produce an electric charge according to the amount of light received, a lens disposed on the upper side of a pixel of the solid-state image pickup element, a protective film which covers the upper side of the lens and a surface of which is flattened, and a surface film which is formed at the surface of the protective film and which is higher in hydrophilicity than the inside of the protective film.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: April 30, 2013
    Assignee: Sony Corporation
    Inventors: Youichi Otsuka, Kazuaki Ogawa, Taichi Natori, Atsushi Yamamoto, Yasunori Koshino, Hitomi Kamiya, Yoshinori Toumiya, Tadayuki Dofuku, Ina Hori, Takayuki Shoya, Yukihiro Sayama, Masaya Shimoji, Yoshikazu Tanaka
  • Patent number: 7999291
    Abstract: A method of manufacturing a solid state imaging device having a photo-electric conversion portion array and a transfer electrode array, these arrays being provided in parallel to each other, upper surfaces and side wall surfaces of the transfer electrode array being covered with a light-shielding layer, and a transparent layer showing an oxidizing property at the time of film formation, the transparent layer being formed on the photo-electric conversion parts and the light-shielding layer.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: August 16, 2011
    Assignee: Sony Corporation
    Inventors: Takeshi Takeda, Tadayuki Dofuku, Kenji Takeo
  • Publication number: 20110129950
    Abstract: A method of manufacturing a solid state imaging device having a photo-electric conversion portion array and a transfer electrode array, these arrays being provided in parallel to each other, upper surfaces and side wall surfaces of the transfer electrode array being covered with a light-shielding layer, and a transparent layer showing an oxidizing property at the time of film formation, the transparent layer being formed on the photo-electric conversion parts and the light-shielding layer.
    Type: Application
    Filed: January 31, 2011
    Publication date: June 2, 2011
    Applicant: SONY CORPORATION
    Inventors: Takeshi TAKEDA, Tadayuki DOFUKU, Kenji TAKEO
  • Patent number: 7935988
    Abstract: A method of manufacturing a solid state imaging device having a photo-electric conversion portion array and a transfer electrode array, these arrays being provided in parallel to each other, upper surfaces and side wall surfaces of the transfer electrode array being covered with a light-shielding layer, and a transparent layer showing an oxidizing property at the time of film formation, the transparent layer being formed on the photo-electric conversion parts and the light-shielding layer.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: May 3, 2011
    Assignee: Sony Corporation
    Inventors: Takeshi Takeda, Tadayuki Dofuku, Kenji Takeo