Three-Dimensionally Stacked Analog Retinal Prosthesis Chip

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...

Full description

Saved in:
Bibliographic Details
Published in:Japanese Journal of Applied Physics 2004-04, Vol.43 (4S), p.1685
Main Authors: Deguchi, Jun, Watanabe, Taiichiro, Nakamura, Tomonori, Nakagawa, Yoshihiro, Fukushima, Takafumi, Kurino, Shim, Abe, Toshiaki, Tamai, Makoto, Koyanagi, Mitsumasa
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.43.1685