标题: | A CMOS 256-Pixel Self-Photovoltaics-Powered Subretinal Prosthetic Chip with Wide Image Dynamic Range and Shared Electrodes and Its In Vitro Experimental Results on Rd1 Mice |
作者: | Wu, Chung-Yu Tzeng, Chi-Kuan Huang, Shih-Yun Chu, Fang-Liang Chiao, Chuan-Chin Tsai, Yueh-Chun Ohta, Jun Noda, Toshihiko 电子工程学系及电子研究所 Department of Electronics Engineering and Institute of Electronics |
关键字: | subretinal prostheses;implantable chip;CMOS image sensor |
公开日期: | 1-一月-2019 |
摘要: | A self-photovoltaics-powered CMOS 256-pixel implantable chip with wide image dynamic range and shared electrodes is proposed and fabricated for subretinal prostheses. The infra-red (IR) light is incident only on photovoltaic cells of the chip whereas the visible light is mainly incident on pixels. The proposed adaptive background cancellation circuit (ABCC) is adopted to increase the image dynamic range so that the subretinal chip can adapt for different surrounding illuminances. Moreover, the bi-directional sharing electrodes (BDSEs) is used to increase electrode size under the same chip area and boost the stimulation charges to 11.4 nC. The functions of the chip have been successfully validated with both electrical measurement and in vitro patch clamp experiments with the retinas of Rd1 mice. |
URI: | http://hdl.handle.net/11536/155513 |
ISBN: | 978-1-7281-2788-0 |
ISSN: | 1548-3746 |
期刊: | 2019 IEEE 62ND INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS (MWSCAS) |
起始页: | 29 |
结束页: | 32 |
显示于类别: | Conferences Paper |