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High‐Luminance Monochrome Faceplates for Compact Projection Displays
Author(s) -
Gualtieri D. M.,
Vaart H.,
John T.,
Hebb R. C.
Publication year - 1993
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.1984847
Subject(s) - materials science , phosphor , raster graphics , optics , optoelectronics , computer graphics (images) , computer science , physics
— Epitaxial phosphor faceplates of cerium‐activated yttrium aluminum garnet (YAG) phosphor (P‐46) have been prepared on single‐crystal YAG faceplates up to 3 in. in diameter. Photolithographic reticulation of the faceplates was performed to increase the external efficacy of the epitaxial phosphor. A 1 × 1‐in. raster on a 2‐in.‐diameter faceplate has produced a faceplate luminance of 21.5 × 104 cd/m 2 (62,700 fL) with 40‐kV excitation at an efficacy of 4.84 lm/W. This is 435 lm from a 1‐square‐in, raster at 90‐W/in. 2 excitation. Extrapolated performance of 2000 lm is expected from 3‐in.‐diameter (2.75‐in.‐diagonal raster) faceplates.