Neuro-Stimulus Chip with Photodiodes Array for Sub-retinal Implants

摘要：

A prototype neuro-stimulus chip for sub-retinal implants in blind patients affected by Age-related Macular Degeneration (AMD) or Retinitis Pigmentosa (RP) is presented in this paper. This retinal prosthetic chip was designed to replace the degenerated photoreceptor cells,and in order to stimulate directly the remaining healthy layers of retinal neurons. The current stimulus circuits are monolithic integrated with photodiodes (PD) array,which can convert the illumination on the eyes into bi-phasic electrical pulses. In addition,a novel charge cancellation circuit is used to discharge the electrodes for medical safty. The prototype chip is designed and fabricated in HJTC 0.18 μrn N-well CMOS 1P6M Mixsignal process,with a± 2.5 V dual voltage power supply.

作者: Xu Zhang Weihua Pei Beiju Huang Hongda Chen

作者单位: State Key Laboratory on Integrated Optoelectronics,Institute of Semiconductor,Chinese Academy of Sciences,Beijing,100083

会议类型: 国际会议

会议名称: 9th International Conference on Solid-State and Integrated-Circuit Technology(第9届固态和集成电路国际会议)

会议地点: 北京

会议语种:英文

页码: 1757-1760

在线出版日期: 2008-10-20（万方平台首次上网日期，不代表论文的发表时间）