A Fully Integrated RF-Powered Contact Lens With a Single Element Display

Author

Pandey, J. ; Yu-Te Liao ; Lingley, A. ; Mirjalili, R. ; Parviz, B. ; Otis, B.

Author_Institution

Dept. of Electr. Eng., Univ. of Washington, Seattle, WA, USA

Volume

4

Issue

6

fYear

2010

Firstpage

454

Lastpage

461

Abstract

We present progress toward a wirelessly-powered active contact lens comprised of a transparent polymer substrate, loop antenna, power harvesting IC, and micro-LED. The fully integrated radio power harvesting and power management system was fabricated in a 0.13 μm CMOS process with a total die area of 0.2 mm². It utilizes a small on-chip capacitor for energy storage to light up a micro-LED pixel. We have demonstrated wireless power transfer at 10 cm distance using the custom IC and on-lens antenna.

Keywords

CMOS analogue integrated circuits; LED displays; capacitors; contact lenses; eye; loop antennas; prosthetic power supplies; radiofrequency integrated circuits; CMOS process; energy storage; fully integrated RF-powered contact lens; loop antenna; micro-LED pixel; on-chip capacitor; power harvesting IC; radio power harvesting system; radio power management system; single element display; size 0.13 mum; transparent polymer substrate; wireless power transfer; Energy harvesting; Flip chip; Light emitting diodes; Low power electronics; Optical device fabrication; Rectennas; Rectifiers; Energy harvesting; flip chip; lens; low-power electronics; optical device fabrication; power management; rectennas; rectifier;

fLanguage

English

Journal_Title

Biomedical Circuits and Systems, IEEE Transactions on

Publisher

ieee

ISSN

1932-4545

Type

jour

DOI

10.1109/TBCAS.2010.2081989

Filename

5618592