An 8100 pixel optoelectronic array for optogenetic retinal prosthesis

Author

Soltan, A. ; Hubin Zhao ; Chaudet, L. ; Neil, M. ; Maaskant, P. ; Degenaar, P.

Author_Institution

Sch. of Electr. & Electron. Eng., Newcastle Univ., Newcastle upon Tyne, UK

fYear

2014

fDate

22-24 Oct. 2014

Firstpage

352

Lastpage

355

Abstract

Optogenetic forms of retinal prosthesis promise higher resolutions and more precise neural coding than electronic implants. This is predicated on high resolution, high radiance optoelectronic illuminators. In this paper, we describe a 90×90 CMOS driven micro light emitting diode (LED) array. Our device is implemented on a 0.35 μm CMOS process combined with a dedicated technology Gallium Nitride LED process. The array can generate an arbitrary 2-D stimulation patterns with both pixel and row updates to allow high speed pulse width intensity control. The control interface is based on an adapted SPI protocol.

Keywords

eye; light emitting diodes; neurophysiology; prosthetics; CMOS driven micro light emitting diode; LED array; adapted SPI protocol; electronic implants; intensity control; neural coding; optoelectronic array; optoelectronic illuminators; optogenetic retinal prosthesis; Arrays; CMOS integrated circuits; Clocks; Educational institutions; Light emitting diodes; Prosthetics; Retina;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Circuits and Systems Conference (BioCAS), 2014 IEEE

Conference_Location

Lausanne

Type

conf

DOI

10.1109/BioCAS.2014.6981735

Filename

6981735