Rare earth oxysulfide phosphor and high resolution cathode ray t

Details Rare earth oxysulfide phosphor and high resolution cathode ray t Rare earth oxysulfide phosphor and high resolution cathode ray t

1992-09-02

1995-02-07

Cooper, Jack

Electric lamp and discharge devices

Cathode ray tube

Screen

2523014S, H01J 2920

Patent

active

053878361

ABSTRACT:
A rare earth oxysulfide phosphor of the formula (Ln.sub.1-x-y La.sub.x Ln'.sub.y).sub.2 O.sub.2 S wherein Ln is at least one element selected from the group consisting of Y, Gd, Sc and Lu, Ln' is at least one element selected from the group consisting of Eu, Tb, Sm, Er, Tm, Dy, Ho, Nd and Pr, and x and y are numbers within ranges of 0.005<x.ltoreq.0.07 and 0.0001.ltoreq.y.ltoreq.0.2, respectively.

REFERENCES:
patent: 4624861 (1986-11-01), Yale et al.
Database WPIL, Derwent Publications Ltd., AN 80-54340C, & JP-A-55 080 485, Jun. 18, 1980, "Indicator Tube Luminescing Red Under Electron Excitation--Has An Anode Coated with Stannic Oxide and Europium-Activated Yttrium-Lanthanum-Gadolinium Oxide, Sulphide or Vanadate".

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