LED-based micro display for an intraocular vision aid (IOVA)

Author

Puttjer, D. ; Pramassing, F. ; Buss, Rich ; Jager, D.

Author_Institution

ZHO-Dept. of Optoelectronics, Gerhard Mercator Univ., Duisburg, Germany

Volume

4

fYear

2001

fDate

2001

Firstpage

3436

Abstract

A micro display for an intraocular vision aid (IOVA) projecting an image of the environment onto the retina is presented. The display comprises an image of an array made out of single LED pixels. It is connected to a CMOS driver circuit using a flip-chip technique. Since micro lenses have to be integrated into the substrate material for proper image projection onto the retina the generated light has to pass the substrate. Thus, only semiconductors with adequate large band gap energies are suitable. This paper discusses the principle of GaAsP material systems for an LED-based micro display applied to an implantable vision aid.

Keywords

CMOS analogue integrated circuits; III-V semiconductors; LED displays; driver circuits; eye; flip-chip devices; gallium arsenide; handicapped aids; integrated optoelectronics; microdisplays; microlenses; sensory aids; vision defects; CMOS driver circuit; GaAsP material systems; IOVA; LED-based micro display; array image; artificial vision; blindness; environment; flip-chip technique; generated light; image; image projection; implantable vision aid; intraocular vision aid; large band gap energies; micro lenses; opaque cornea; retina; semiconductors; single LED pixels; substrate material; Displays; Driver circuits; Lenses; Light emitting diodes; Optical materials; Photonic band gap; Pixel; Retina; Semiconductor materials; Substrates;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE

ISSN

1094-687X

Print_ISBN

0-7803-7211-5

Type

conf

DOI

10.1109/IEMBS.2001.1019568

Filename

1019568