Patent Number: 6,168,729

Title: Fluorescent material and fluorescent display device

Abstract: A fluorescent material and a display device incorporating the fluorescent material are described. The fluorescent material is a mixture including a phosphor which is excitable at a voltage of 1 kV or higher for emitting light and a phosphor which is excitable at a voltage of 1 kV or lower for emitting light, wherein each phosphor emits light of the same color and the fluorescent material is luminous at an anode voltage of 2 kV or lower. The fluorescent display device accelerates electrons emitted from an electron source at an anode voltage of 2 kV or lower and rushes these electrons against an anode for exciting the fluorescent material present on the anode. The fluorescent material is a mixture as set forth above.

Inventors: Toki; Hitoshi (Chiba-ken, JP), Kataoka; Fumiaki (Chiba-ken, JP), Itoh; Shigeo (Chiba-ken, JP), Sato; Yoshitaka (Chiba-ken, JP)

Assignee: Futaba Denshi Kogyo, K.K.

International Classification: C09K 11/64 (20060101); C09K 11/59 (20060101); C09K 11/77 (20060101); H01J 027/20 (); C09K 011/00 ()

Expiration Date: 01/02/2018