Browsing by Author "Fran, YS"

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Involvement of scattered UV light in the generation of photoluminescence in powdered phosphor screens
(1999-02-21)
Fran, YS
;
Tseng, TY
;
電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
In powdered phosphor screens, a large fraction of incident UV light is reflected from the surface of individual particles, with the remainder penetrating the phosphor surface to generate photoluminescence. The reflected UV photons entering the screen are randomly scattered throughout the particulate structure, resulting in photoluminescence down to, for example, 10 layers deep from the surface. An optimum number of layers within a screen for luminance in reflection and transmission modes can be calculated after determination of the absorption and scattering coefficients per layer in a practical phosphor screen. Good agreement has been obtained between the calculated and experimental results.
Preparation of aluminum film on phosphor screen for field emission display
(1999-10-15)
Fran, YS
;
Tseng, TY
;
電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
The phosphor screen for field emission display (FED) was made by using cellulose acetate butyrate as a binder dissolved in butoxyethyl acetate. Before baking at temperatures lower than 500 degrees C, the aluminum film was formed on the screen. This screen has nearly two times the brightness in comparison with pure screen. The FED panel was successfully made using Al film coated phosphor screen and demonstrated an image of high brightness and relatively good quality which is suitable for practical application. (C) 1999 Elsevier Science S.A. All rights reserved.