[C-12] 集積回路

[C-12-1] Design of artificial retina chip for stimulation with higher voltage range

^○WISAROOT SRIITSARANUSORN¹, YUKI NAKANISHI¹, YOSHINORI SUNAGA¹, KENZO SHODO², YASUO TERASAWA², HIRONARI TAKEHARA¹, MAKITO HARUTA³, HIROYUKI TASHIRO⁴, KIYOTAKA SASAGAWA¹, JUN OHTA¹ (1.Nara Inst. of Sci. and Tech., 2.Nidek, 3.Chitose Inst. Sci. Tech., 4.Kyushu Univ.)

この講演は本会「学術奨励賞受賞候補者」の資格対象です。

Keywords:Artificial retina chip、CMOS chip、Implantable device、Current stimulation

The purpose of an artificial retina chip is to realize a prosthetic device for individuals with retinal impairment through electrical stimulation. The chip developed in our previous work offers high-rated stimulation and the ability to control multiple electrodes for improved delivery of retinal information. However, the stimulation current was limited by its maximum voltage, making it challenging to achieve constant current stimulation under high load conditions. To overcome this limitation, a new circuit was developed in this study to expand the stimulation voltage range, allowing the chip to effectively function even under higher load conditions.