Three-Dimensionally Stacked Analog Retinal Prosthesis Chip

• Deguchi Jun

  Department of Bioengineering and Robotics, Tohoku University

• Watanabe Taiichiro

  Department of Bioengineering and Robotics, Tohoku University

• Nakamura Tomonori

  Department of Bioengineering and Robotics, Tohoku University

• Nakagawa Yoshihiro

  Department of Bioengineering and Robotics, Tohoku University

• Fukushima Takafumi

  Department of Bioengineering and Robotics, Tohoku University

• Jeoung-Chill Shim

  Department of Bioengineering and Robotics, Tohoku University

• Kurino Hiroyuki

  Department of Bioengineering and Robotics, Tohoku University

• Abe Toshiaki

  Graduate School of Medicine, Tohoku University

• Tamai Makoto

  Graduate School of Medicine, Tohoku University

• Koyanagi Mitsumasa

  Department of Bioengineering and Robotics, Tohoku University

Abstract

As blind patients with an intact optic nerve and damaged photoreceptor cells increase in number in recent years, there has been a growing interest in visual prostheses by electrically stimulating their retinas. Previous clinical studies indicated that blind patients perceive a controlled electrical current applied to a small area of the retina via electrodes as a spot of light. We propose a novel implantable device, so-called three-dimensionally (3D) stacked retinal prosthesis, which is composed of a photodetector, an image processor, electrical current generator circuits, and an electrode array on one chip. The spice simulation showed that our designed analog circuits for 3D stacked retinal prosthesis chip could output desirable electrical current with variable pulse width by controlling bias voltages.

Journal

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 43 (4B), 1685-1689, 2004

  The Japan Society of Applied Physics

Keywords

• retinal prosthesis
• three-dimensional integration technology
• analog circuit

Details

• CRID: 1390001206264180480
• NII Article ID: 10012948279
• NII Book ID: AA10457675
• DOI: 10.1143/jjap.43.1685
• COI: 1:CAS:528:DC%2BD2cXktlOgtLc%3D
• ISSN: 13474065
• ISSN: 00214922
• NDL BIB ID: 6938207
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6938207
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.43.1685
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.43.1685/pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed