Title

Optically Written Displays Based On Up-Conversion Of Near Infrared Light

Abstract

A new type of display is reported based on up conversion of near infrared light to the visible. The display medium is a transparent polymer containing particles of crystals doped with Yb3+ and other rare earth ions. The Yb3+ ions absorb light from a commercially available diode laser emitting near 975 nm and transfer that energy to the other dopant ions. Using a fluoride crystal host, NaYF4, co-doped with Tm3+ ions we obtain blue light at ∼480 nm, with Ho3+ or Er3+ ions we obtain green light at ∼550 nm and with Er3+ we obtain red light at ∼660 nm. The mechanisms that enable such display media are explained, a demonstration of a prototype display is shown, and concepts for full color, high brightness, high resolution, displays are presented.

Publication Date

12-1-2000

Publication Title

SID Conference Record of the International Display Research Conference

Number of Pages

111-114

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

0034588914 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0034588914

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