Patents by Inventor Bunji Yasumura

Bunji Yasumura 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: 10566255
    Abstract: Provided is a semiconductor device having a pad on a semiconductor chip, a first passivation film formed over the semiconductor chip and having an opening portion on the pad of a probe region and a coupling region, a second passivation film formed over the pad and the first passivation film and having an opening portion on the pad of the coupling region, and a rewiring layer formed over the coupling region and the second passivation film and electrically coupled to the pad. The pad of the probe region placed on the periphery side of the semiconductor chip relative to the coupling region has a probe mark and the rewiring layer extends from the coupling region to the center side of the semiconductor chip. The present invention provides a technology capable of achieving size reduction, particularly pitch narrowing, of a semiconductor device.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: February 18, 2020
    Assignee: Renesas Electronics Corporation
    Inventors: Toshihiko Akiba, Bunji Yasumura, Masanao Sato, Hiromi Abe
  • Publication number: 20190348332
    Abstract: Provided is a semiconductor device having a pad on a semiconductor chip, a first passivation film formed over the semiconductor chip and having an opening portion on the pad of a probe region and a coupling region, a second passivation film formed over the pad and the first passivation film and having an opening portion on the pad of the coupling region, and a rewiring layer formed over the coupling region and the second passivation film and electrically coupled to the pad. The pad of the probe region placed on the periphery side of the semiconductor chip relative to the coupling region has a probe mark and the rewiring layer extends from the coupling region to the center side of the semiconductor chip. The present invention provides a technology capable of achieving size reduction, particularly pitch narrowing, of a semiconductor device.
    Type: Application
    Filed: July 23, 2019
    Publication date: November 14, 2019
    Inventors: Toshihiko Akiba, Bunji Yasumura, Masanao Sato, Hiromi Abe
  • Publication number: 20190057913
    Abstract: Provided is a semiconductor device having a pad on a semiconductor chip, a first passivation film formed over the semiconductor chip and having an opening portion on the pad of a probe region and a coupling region, a second passivation film formed over the pad and the first passivation film and having an opening portion on the pad of the coupling region, and a rewiring layer formed over the coupling region and the second passivation film and electrically coupled to the pad. The pad of the probe region placed on the periphery side of the semiconductor chip relative to the coupling region has a probe mark and the rewiring layer extends from the coupling region to the center side of the semiconductor chip. The present invention provides a technology capable of achieving size reduction, particularly pitch narrowing, of a semiconductor device.
    Type: Application
    Filed: October 22, 2018
    Publication date: February 21, 2019
    Inventors: Toshihiko Akiba, Bunji Yasumura, Masanao Sato, Hiromi Abe
  • Patent number: 10163740
    Abstract: A technique is provided that can prevent cracking of a protective film in the uppermost layer of a semiconductor device and improve the reliability of the semiconductor device. Bonding pads formed over a principal surface of a semiconductor chip are in a rectangular shape, and an opening is formed in a protective film over each bonding pad in such a manner that an overlapping width of the protective film in a wire bonding region of each bonding pad becomes wider than an overlapping width of the protective film in a probe region of each bonding pad.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: December 25, 2018
    Assignee: Renesas Electronics Corporation
    Inventors: Bunji Yasumura, Fumio Tsuchiya, Hisanori Ito, Takuji Ide, Naoki Kawanabe, Masanao Sato
  • Patent number: 10141295
    Abstract: To improve the assemblability of a semiconductor device. When a memory chip is mounted over a logic chip, a recognition range including a recognition mark formed at a back surface of the logic chip is imaged and a shape of the recognition range is recognized, alignment of a plurality of bumps of the logic chip and a plurality of projection electrodes of the above-described memory chip is performed based on a result of the recognition, and the above-described memory chip is mounted over the logic chip. At this time, the shape of the recognition range is different from any portion of an array shape of the bumps, as a result, the recognition mark in the shape of the recognition range can be reliably recognized, and alignment of the bumps of the logic chip and the projection electrodes of the above-described memory chip is performed with high accuracy.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: November 27, 2018
    Assignee: Renesas Electronics Corporation
    Inventors: Bunji Yasumura, Yoshinori Deguchi, Fumikazu Takei, Akio Hasebe, Naohiro Makihira, Mitsuyuki Kubo
  • Patent number: 10134648
    Abstract: Provided is a semiconductor device having a pad on a semiconductor chip, a first passivation film formed over the semiconductor chip and having an opening portion on the pad of a probe region and a coupling region, a second passivation film formed over the pad and the first passivation film and having an opening portion on the pad of the coupling region, and a rewiring layer formed over the coupling region and the second passivation film and electrically coupled to the pad. The pad of the probe region placed on the periphery side of the semiconductor chip relative to the coupling region has a probe mark and the rewiring layer extends from the coupling region to the center side of the semiconductor chip. The present invention provides a technology capable of achieving size reduction, particularly pitch narrowing, of a semiconductor device.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: November 20, 2018
    Assignee: Renesas Electronics Corporation
    Inventors: Toshihiko Akiba, Bunji Yasumura, Masanao Sato, Hiromi Abe
  • Publication number: 20180145001
    Abstract: Provided is a semiconductor device having a pad on a semiconductor chip, a first passivation film formed over the semiconductor chip and having an opening portion on the pad of a probe region and a coupling region, a second passivation film formed over the pad and the first passivation film and having an opening portion on the pad of the coupling region, and a rewiring layer formed over the coupling region and the second passivation film and electrically coupled to the pad. The pad of the probe region placed on the periphery side of the semiconductor chip relative to the coupling region has a probe mark and the rewiring layer extends from the coupling region to the center side of the semiconductor chip. The present invention provides a technology capable of achieving size reduction, particularly pitch narrowing, of a semiconductor device.
    Type: Application
    Filed: January 22, 2018
    Publication date: May 24, 2018
    Inventors: Toshihiko Akiba, Bunji Yasumura, Masanao Sato, Hiromi Abe
  • Patent number: 9911673
    Abstract: Provided is a semiconductor device having a pad on a semiconductor chip, a first passivation film formed over the semiconductor chip and having an opening portion on the pad of a probe region and a coupling region, a second passivation film formed over the pad and the first passivation film and having an opening portion on the pad of the coupling region, and a rewiring layer formed over the coupling region and the second passivation film and electrically coupled to the pad. The pad of the probe region placed on the periphery side of the semiconductor chip relative to the coupling region has a probe mark and the rewiring layer extends from the coupling region to the center side of the semiconductor chip. The present invention provides a technology capable of achieving size reduction, particularly pitch narrowing, of a semiconductor device.
    Type: Grant
    Filed: April 22, 2017
    Date of Patent: March 6, 2018
    Assignee: Renesas Electronics Corporation
    Inventors: Toshihiko Akiba, Bunji Yasumura, Masanao Sato, Hiromi Abe
  • Publication number: 20180040598
    Abstract: To improve the assemblability of a semiconductor device. When a memory chip is mounted over a logic chip, a recognition range including a recognition mark formed at a back surface of the logic chip is imaged and a shape of the recognition range is recognized, alignment of a plurality of bumps of the logic chip and a plurality of projection electrodes of the above-described memory chip is performed based on a result of the recognition, and the above-described memory chip is mounted over the logic chip. At this time, the shape of the recognition range is different from any portion of an array shape of the bumps, as a result, the recognition mark in the shape of the recognition range can be reliably recognized, and alignment of the bumps of the logic chip and the projection electrodes of the above-described memory chip is performed with high accuracy.
    Type: Application
    Filed: October 12, 2017
    Publication date: February 8, 2018
    Inventors: Bunji YASUMURA, Yoshinori DEGUCHI, Fumikazu TAKEI, Akio HASEBE, Naohiro MAKIHIRA, Mitsuyuki KUBO
  • Publication number: 20180040521
    Abstract: A technique is provided that can prevent cracking of a protective film in the uppermost layer of a semiconductor device and improve the reliability of the semiconductor device. Bonding pads formed over a principal surface of a semiconductor chip are in a rectangular shape, and an opening is formed in a protective film over each bonding pad in such a manner that an overlapping width of the protective film in a wire bonding region of each bonding pad becomes wider than an overlapping width of the protective film in a probe region of each bonding pad.
    Type: Application
    Filed: October 17, 2017
    Publication date: February 8, 2018
    Inventors: Bunji YASUMURA, Fumio TSUCHIYA, Hisanori ITO, Takuji IDE, Naoki KAWANABE, Masanao SATO
  • Patent number: 9825017
    Abstract: To improve the assemblability of a semiconductor device. When a memory chip is mounted over a logic chip, a recognition range including a recognition mark formed at a back surface of the logic chip is imaged and a shape of the recognition range is recognized, alignment of a plurality of bumps of the logic chip and a plurality of projection electrodes of the above-described memory chip is performed based on a result of the recognition, and the above-described memory chip is mounted over the logic chip. At this time, the shape of the recognition range is different from any portion of an array shape of the bumps, as a result, the recognition mark in the shape of the recognition range can be reliably recognized, and alignment of the bumps of the logic chip and the projection electrodes of the above-described memory chip is performed with high accuracy.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: November 21, 2017
    Assignee: Renesas Electronics Corporation
    Inventors: Bunji Yasumura, Yoshinori Deguchi, Fumikazu Takei, Akio Hasebe, Naohiro Makihira, Mitsuyuki Kubo
  • Patent number: 9824944
    Abstract: A technique is provided that can prevent cracking of a protective film in the uppermost layer of a semiconductor device and improve the reliability of the semiconductor device. Bonding pads formed over a principal surface of a semiconductor chip are in a rectangular shape, and an opening is formed in a protective film over each bonding pad in such a manner that an overlapping width of the protective film in a wire bonding region of each bonding pad becomes wider than an overlapping width of the protective film in a probe region of each bonding pad.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: November 21, 2017
    Assignee: Renesas Electronics Corporation
    Inventors: Bunji Yasumura, Fumio Tsuchiya, Hisanori Ito, Takuji Ide, Naoki Kawanabe, Masanao Sato
  • Publication number: 20170229359
    Abstract: Provided is a semiconductor device having a pad on a semiconductor chip, a first passivation film formed over the semiconductor chip and having an opening portion on the pad of a probe region and a coupling region, a second passivation film formed over the pad and the first passivation film and having an opening portion on the pad of the coupling region, and a rewiring layer formed over the coupling region and the second passivation film and electrically coupled to the pad. The pad of the probe region placed on the periphery side of the semiconductor chip relative to the coupling region has a probe mark and the rewiring layer extends from the coupling region to the center side of the semiconductor chip. The present invention provides a technology capable of achieving size reduction, particularly pitch narrowing, of a semiconductor device.
    Type: Application
    Filed: April 22, 2017
    Publication date: August 10, 2017
    Inventors: Toshihiko Akiba, Bunji Yasumura, Masanao Sato, Hiromi Abe
  • Patent number: 9646901
    Abstract: Provided is a semiconductor device having a pad on a semiconductor chip, a first passivation film formed over the semiconductor chip and having an opening portion on the pad of a probe region and a coupling region, a second passivation film formed over the pad and the first passivation film and having an opening portion on the pad of the coupling region, and a rewiring layer formed over the coupling region and the second passivation film and electrically coupled to the pad. The pad of the probe region placed on the periphery side of the semiconductor chip relative to the coupling region has a probe mark and the rewiring layer extends from the coupling region to the center side of the semiconductor chip. The present invention provides a technology capable of achieving size reduction, particularly pitch narrowing, of a semiconductor device.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: May 9, 2017
    Assignee: Renesas Electronics Corporation
    Inventors: Toshihiko Akiba, Bunji Yasumura, Masanao Sato, Hiromi Abe
  • Publication number: 20170018470
    Abstract: A technique is provided that can prevent cracking of a protective film in the uppermost layer of a semiconductor device and improve the reliability of the semiconductor device. Bonding pads formed over a principal surface of a semiconductor chip are in a rectangular shape, and an opening is formed in a protective film over each bonding pad in such a manner that an overlapping width of the protective film in a wire bonding region of each bonding pad becomes wider than an overlapping width of the protective film in a probe region of each bonding pad.
    Type: Application
    Filed: September 29, 2016
    Publication date: January 19, 2017
    Inventors: Bunji YASUMURA, Fumio TSUCHIYA, Hisanori ITO, Takuji IDE, Naoki KAWANABE, Masanao SATO
  • Publication number: 20170005080
    Abstract: To improve the assemblability of a semiconductor device. When a memory chip is mounted over a logic chip, a recognition range including a recognition mark formed at a back surface of the logic chip is imaged and a shape of the recognition range is recognized, alignment of a plurality of bumps of the logic chip and a plurality of projection electrodes of the above-described memory chip is performed based on a result of the recognition, and the above-described memory chip is mounted over the logic chip. At this time, the shape of the recognition range is different from any portion of an array shape of the bumps, as a result, the recognition mark in the shape of the recognition range can be reliably recognized, and alignment of the bumps of the logic chip and the projection electrodes of the above-described memory chip is performed with high accuracy.
    Type: Application
    Filed: September 19, 2016
    Publication date: January 5, 2017
    Inventors: Bunji YASUMURA, Yoshinori DEGUCHI, Fumikazu TAKEI, Akio HASEBE, Naohiro MAKIHIRA, Mitsuyuki KUBO
  • Publication number: 20160336244
    Abstract: Provided is a semiconductor device having a pad on a semiconductor chip, a first passivation film formed over the semiconductor chip and having an opening portion on the pad of a probe region and a coupling region, a second passivation film formed over the pad and the first passivation film and having an opening portion on the pad of the coupling region, and a rewiring layer formed over the coupling region and the second passivation film and electrically coupled to the pad. The pad of the probe region placed on the periphery side of the semiconductor chip relative to the coupling region has a probe mark and the rewiring layer extends from the coupling region to the center side of the semiconductor chip. The present invention provides a technology capable of achieving size reduction, particularly pitch narrowing, of a semiconductor device.
    Type: Application
    Filed: July 25, 2016
    Publication date: November 17, 2016
    Inventors: Toshihiko Akiba, Bunji Yasumura, Masanao Sato, Hiromi Abe
  • Patent number: 9490218
    Abstract: To improve the assemblability of a semiconductor device. When a memory chip is mounted over a logic chip, a recognition range including a recognition mark formed at a back surface of the logic chip is imaged and a shape of the recognition range is recognized, alignment of a plurality of bumps of the logic chip and a plurality of projection electrodes of the above-described memory chip is performed based on a result of the recognition, and the above-described memory chip is mounted over the logic chip. At this time, the shape of the recognition range is different from any portion of an array shape of the bumps, as a result, the recognition mark in the shape of the recognition range can be reliably recognized, and alignment of the bumps of the logic chip and the projection electrodes of the above-described memory chip is performed with high accuracy.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: November 8, 2016
    Assignee: Renesas Electronics Corporation
    Inventors: Bunji Yasumura, Yoshinori Deguchi, Fumikazu Takei, Akio Hasebe, Naohiro Makihira, Mitsuyuki Kubo
  • Publication number: 20160035636
    Abstract: Provided is a semiconductor device having a pad on a semiconductor chip, a first passivation film formed over the semiconductor chip and having an opening portion on the pad of a probe region and a coupling region, a second passivation film formed over the pad and the first passivation film and having an opening portion on the pad of the coupling region, and a rewiring layer formed over the coupling region and the second passivation film and electrically coupled to the pad. The pad of the probe region placed on the periphery side of the semiconductor chip relative to the coupling region has a probe mark and the rewiring layer extends from the coupling region to the center side of the semiconductor chip. The present invention provides a technology capable of achieving size reduction, particularly pitch narrowing, of a semiconductor device.
    Type: Application
    Filed: October 6, 2015
    Publication date: February 4, 2016
    Inventors: Toshihiko Akiba, Bunji Yasumura, Masanao Sato, Hiromi Abe
  • Patent number: 9230938
    Abstract: Provided is a method of manufacturing a semiconductor device including a step of testing every one of through-electrodes. A second probe test is conducted to check an electrical coupling state between a plurality of copper post bumps formed on the side of the surface of a wafer and electrically coupled to a metal layer and a plurality of bumps formed on the side of the back surface of the wafer and electrically coupled to the metal layer (also another metal layer) via a plurality of through-electrodes by probing to each of the bumps on the side of the back surface while short-circuiting between the copper post bumps (electrodes). By this test, conduction between the bumps (electrodes) on the back surface side is checked.
    Type: Grant
    Filed: December 27, 2014
    Date of Patent: January 5, 2016
    Assignee: Renesas Electronics Corporation
    Inventors: Akio Hasebe, Naohiro Makihira, Bunji Yasumura, Mitsuyuki Kubo, Fumikazu Takei, Yoshinori Deguchi