Patent · US Expired

Green emitting phosphor and cathode-ray tube provided with such a phosphor

US4559469A · kind A · utility

5Cited by

0References

3Claims

0Family size

Assignee

U.S. Philips Corporation · US

Inventors

Thomas Welker · Monschau, DE
Klaus Carl
Wolfram Czarnojan · Aachen, DE

Key dates

Filing date	Apr 19, 1985
Grant date	Dec 17, 1985
Priority date	—
Expiry date	Apr 19, 2005

Classification

Technology area (CPC H)Electricity
CPC primaryH01J29/20
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A green emitting phosphor for heavily loaded cathode-ray tubes comprises a mixture of a deep-green and a yellowish-green emitting phosphor. Mixtures of Zn.sub.2 SiO.sub.4 :Mn and at least one phosphor from the group comprising Y.sub.2 SiO.sub.5 :Tb; X.sub.2 O.sub.2 S:Tb; ES:Ce and XOZ:Tb, where X=Y, La, Gd, Lu; E=Ca, Sr, Ba; and Z=Cl, Br, I, F; satisfy, as FIG. 1 illustrates for a few examples, the EBU specification.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.