Design and Ex Vivo Experimental Validations of the CMOS 256-Pixel Photovoltaic-Powered Subretinal Prosthetic Chip With Auto-Adaptive Pixels for a Wide Image Illuminance Range

Chung-Yu Wu, Hsuan-Hung Liu,Po-Hung Chen,Chuan-Chin Chiao,Fang-Liang Chu,Yueh-Chun Tsai,Po-Chun Chen,Wen-Yuan Tsai,Ying-Hsuen Wu,Chi-Kuan Tseng

IEEE Transactions on Biomedical Engineering（2022）

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摘要

Objective: To design and verify a CMOS 256-pixel photovoltaic-powered subretinal prosthetic chip with key advances over the state-of-the-art. The three key advances are: 1) automatic adaptation to changing background illuminance levels; 2) increase of injection charges with reduced crosstalk leakage charges, enhanced charge balance, and low process variations; 3) stable stimulatio...

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关键词

Retina,Generators,Implants,Photovoltaic systems,Urban areas,Prosthetics,Semiconductor device measurement

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