Patents by Inventor Kazuo Tomita

Kazuo Tomita 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: 20240021541
    Abstract: A semiconductor device with improved reliability is provided. The semiconductor device is characterized by its embodiments in that sloped portions are formed on connection parts between a pad and a lead-out wiring portion, respectively. This feature suppresses crack formation in a coating area where a part of the pad is covered with a surface protective film.
    Type: Application
    Filed: September 29, 2023
    Publication date: January 18, 2024
    Inventors: Kazuo TOMITA, Hiroki TAKEWAKA
  • Patent number: 11810869
    Abstract: A semiconductor device with improved reliability is provided. The semiconductor device is characterized by its embodiments in that sloped portions are formed on connection parts between a pad and a lead-out wiring portion, respectively. This feature suppresses crack formation in a coating area where a part of the pad is covered with a surface protective film.
    Type: Grant
    Filed: September 21, 2022
    Date of Patent: November 7, 2023
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Kazuo Tomita, Hiroki Takewaka
  • Publication number: 20230015101
    Abstract: A semiconductor device with improved reliability is provided. The semiconductor device is characterized by its embodiments in that sloped portions are formed on connection parts between a pad and a lead-out wiring portion, respectively. This feature suppresses crack formation in a coating area where a part of the pad is covered with a surface protective film.
    Type: Application
    Filed: September 21, 2022
    Publication date: January 19, 2023
    Inventors: Kazuo TOMITA, Hiroki TAKEWAKA
  • Patent number: 11482498
    Abstract: A semiconductor device with improved reliability is provided. The semiconductor device is characterized by its embodiments in that sloped portions are formed on connection parts between a pad and a lead-out wiring portion, respectively. This feature suppresses crack formation in a coating area where a part of the pad is covered with a surface protective film.
    Type: Grant
    Filed: November 17, 2020
    Date of Patent: October 25, 2022
    Assignee: Renesas Electronics Corporation
    Inventors: Kazuo Tomita, Hiroki Takewaka
  • Patent number: 11056450
    Abstract: The present disclosure provides a technique for improving the reliability of a semiconductor device where spreading of cracking that occurs at the time of dicing to a seal ring can be restricted even in a semiconductor device with a low-k film used as an interlayer insulating film. Vias are formed in each layer on a dicing region side. The vias are formed at the same intervals in a matrix as viewed in a top view. Even in the case where cracking occurs at the time of dicing, the cracking can be prevented from spreading to a seal ring by the vias. As a result, resistance to moisture absorbed in a circuit formation region can be improved, and deterioration in reliability can be prevented.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: July 6, 2021
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventor: Kazuo Tomita
  • Publication number: 20210066213
    Abstract: A semiconductor device with improved reliability is provided. The semiconductor device is characterized by its embodiments in that sloped portions are formed on connection parts between a pad and a lead-out wiring portion, respectively. This feature suppresses crack formation in a coating area where a part of the pad is covered with a surface protective film.
    Type: Application
    Filed: November 17, 2020
    Publication date: March 4, 2021
    Inventors: Kazuo TOMITA, Hiroki TAKEWAKA
  • Patent number: 10923437
    Abstract: A semiconductor device with improved reliability is provided. The semiconductor device is characterized by its embodiments in that sloped portions are formed on connection parts between a pad and a lead-out wiring portion, respectively. This feature suppresses crack formation in a coating area where a part of the pad is covered with a surface protective film.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: February 16, 2021
    Assignee: Renesas Electronics Corporation
    Inventors: Kazuo Tomita, Hiroki Takewaka
  • Publication number: 20200251429
    Abstract: The present disclosure provides a technique for improving the reliability of a semiconductor device where spreading of cracking that occurs at the time of dicing to a seal ring can be restricted even in a semiconductor device with a low-k film used as an interlayer insulating film. Vias are formed in each layer on a dicing region side. The vias are formed at the same intervals in a matrix as viewed in a top view. Even in the case where cracking occurs at the time of dicing, the cracking can be prevented from spreading to a seal ring by the vias. As a result, resistance to moisture absorbed in a circuit formation region can be improved, and deterioration in reliability can be prevented.
    Type: Application
    Filed: April 22, 2020
    Publication date: August 6, 2020
    Inventor: Kazuo TOMITA
  • Patent number: 10672725
    Abstract: The present disclosure provides a technique for improving the reliability of a semiconductor device where spreading of cracking that occurs at the time of dicing to a seal ring can be restricted even in a semiconductor device with a low-k film used as an interlayer insulating film. Vias are formed in each layer on a dicing region side. The vias are formed at the same intervals in a matrix as viewed in a top view. Even in the case where cracking occurs at the time of dicing, the cracking can be prevented from spreading to a seal ring by the vias. As a result, resistance to moisture absorbed in a circuit formation region can be improved, and deterioration in reliability can be prevented.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: June 2, 2020
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventor: Kazuo Tomita
  • Publication number: 20190221526
    Abstract: A semiconductor device with improved reliability is provided. The semiconductor device is characterized by its embodiments in that sloped portions are formed on connection parts between a pad and a lead-out wiring portion, respectively. This feature suppresses crack formation in a coating area where a part of the pad is covered with a surface protective film.
    Type: Application
    Filed: March 26, 2019
    Publication date: July 18, 2019
    Inventors: Kazuo TOMITA, Hiroki TAKEWAKA
  • Patent number: 10283458
    Abstract: A semiconductor device with improved reliability is provided. The semiconductor device is characterized by its embodiments in that sloped portions are formed on connection parts between a pad and a lead-out wiring portion, respectively. This feature suppresses crack formation in a coating area where a part of the pad is covered with a surface protective film.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: May 7, 2019
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Kazuo Tomita, Hiroki Takewaka
  • Patent number: 10043742
    Abstract: In a semiconductor device (SD), plate-shaped upper electrodes (UEL) are formed on a lower electrode (LEL) with a dielectric film (DEC) interposed therebetween. The lower electrode (LEL), the dielectric film (DEC), and the upper electrodes (UEL) constitute MIM capacitors (MCA). One of the upper electrodes (UEL) and another upper electrode (UEL) that are adjacent to each other are arranged at an equal distance (D1), without the guard ring being interposed therebetween. The upper electrodes (UEL) positioned on the outermost periphery and the guard ring (GR) positioned outside those upper electrodes UEL are arranged at a distance equal to the distance (D1) from each other.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: August 7, 2018
    Assignee: Renesas Electronics Corporation
    Inventors: Kazuo Tomita, Keiichi Yamada
  • Patent number: 10032821
    Abstract: In an imaging device having a waveguide, a surface of an insulating film covering a seal ring is prevented from getting rough. A pixel region, a peripheral circuit region, and a seal region are defined over a semiconductor substrate. After formation of a pad electrode in the peripheral circuit region and a seal ring in the seal ring region, a TEOS film is so formed as to cover the pad electrode and the seal ring. A pattern of a photoresist for exposing a portion of the TEOS film covering the pad electrode and the seal ring, respectively, is formed and etching treatment is subjected to the exposed TEOS film. Then, after the pattern of the photoresist has been formed, a second waveguide holding hole is formed in the pixel region by performing etching treatment.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: July 24, 2018
    Assignee: Renesas Electronics Corporation
    Inventor: Kazuo Tomita
  • Publication number: 20180175014
    Abstract: In a semiconductor device (SD), plate-shaped upper electrodes (UEL) are formed on a lower electrode (LEL) with a dielectric film (DEC) interposed therebetween. The lower electrode (LEL), the dielectric film (DEC), and the upper electrodes (UEL) constitute MIM capacitors (MCA). One of the upper electrodes (UEL) and another upper electrode (UEL) that are adjacent to each other are arranged at an equal distance (D1), without the guard ring being interposed therebetween. The upper electrodes (UEL) positioned on the outermost periphery and the guard ring (GR) positioned outside those upper electrodes UEL are arranged at a distance equal to the distance (D1) from each other.
    Type: Application
    Filed: February 15, 2018
    Publication date: June 21, 2018
    Inventors: Kazuo TOMITA, Keiichi YAMADA
  • Publication number: 20180166401
    Abstract: The present disclosure provides a technique for improving the reliability of a semiconductor device where spreading of cracking that occurs at the time of dicing to a seal ring can be restricted even in a semiconductor device with a low-k film used as an interlayer insulating film. Vias are formed in each layer on a dicing region side. The vias are formed at the same intervals in a matrix as viewed in a top view. Even in the case where cracking occurs at the time of dicing, the cracking can be prevented from spreading to a seal ring by the vias. As a result, resistance to moisture absorbed in a circuit formation region can be improved, and deterioration in reliability can be prevented.
    Type: Application
    Filed: November 10, 2017
    Publication date: June 14, 2018
    Applicant: RENESAS ELECTRONICS CORPORATION
    Inventor: Kazuo TOMITA
  • Patent number: 9929086
    Abstract: In a semiconductor device (SD), plate-shaped upper electrodes (UEL) are formed on a lower electrode (LEL) with a dielectric film (DEC) interposed therebetween. The lower electrode (LEL), the dielectric film (DEC), and the upper electrodes (UEL) constitute MIM capacitors (MCA). One of the upper electrodes (UEL) and another upper electrode (UEL) that are adjacent to each other are arranged at an equal distance (D1), without the guard ring being interposed therebetween. The upper electrodes (UEL) positioned on the outermost periphery and the guard ring (GR) positioned outside those upper electrodes UEL are arranged at a distance equal to the distance (D1) from each other.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: March 27, 2018
    Assignee: Renesas Electronics Corporation
    Inventors: Kazuo Tomita, Keiichi Yamada
  • Patent number: 9837365
    Abstract: The present disclosure provides a technique for improving the reliability of a semiconductor device where spreading of cracking that occurs at the time of dicing to a seal ring can be restricted even in a semiconductor device with a low-k film used as an interlayer insulating film. Vias are formed in each layer on a dicing region side. The vias are formed at the same intervals in a matrix as viewed in a top view. Even in the case where cracking occurs at the time of dicing, the cracking can be prevented from spreading to a seal ring by the vias. As a result, resistance to moisture absorbed in a circuit formation region can be improved, and deterioration in reliability can be prevented.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: December 5, 2017
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventor: Kazuo Tomita
  • Publication number: 20170345775
    Abstract: A semiconductor device with improved reliability is provided. The semiconductor device is characterized by its embodiments in that sloped portions are formed on connection parts between a pad and a lead-out wiring portion, respectively. This feature suppresses crack formation in a coating area where a part of the pad is covered with a surface protective film.
    Type: Application
    Filed: August 14, 2017
    Publication date: November 30, 2017
    Inventors: Kazuo Tomita, Hiroki Takewaka
  • Patent number: 9761541
    Abstract: A semiconductor device with improved reliability is provided. The semiconductor device is characterized by its embodiments in that sloped portions are formed on connection parts between a pad and a lead-out wiring portion, respectively. This feature suppresses crack formation in a coating area where a part of the pad is covered with a surface protective film.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: September 12, 2017
    Assignee: Renesas Electronics Corporation
    Inventors: Kazuo Tomita, Hiroki Takewaka
  • Publication number: 20170256506
    Abstract: A semiconductor device is a semiconductor device in which one chip region is formed through divided exposure. An interlayer insulating film has a via and an interconnection trench in an element formation region and has a guard ring hole in a guard ring region. An interconnection conductive layer is formed in the via and the interconnection trench. A guard ring conductive layer is formed in the guard ring hole. A minimum dimension of a width of the guard ring conductive layer is greater than a minimum dimension of a width of the interconnection conductive layer in the via.
    Type: Application
    Filed: May 23, 2017
    Publication date: September 7, 2017
    Inventor: Kazuo Tomita