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.
Original language | English (US) |
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Pages (from-to) | 111-114 |
Number of pages | 4 |
Journal | SID Conference Record of the International Display Research Conference |
State | Published - 2000 |
Externally published | Yes |
Event | 20th International Display Research Conference - Palm Beach, FL, United States Duration: Sep 25 2000 → Sep 28 2000 |
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering