Patent · US Expired

Color picture screen with blue phosphor layer

US6762548B2 · kind B2 · utility

0Cited by

7References

8Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Hans-Helmut Bechtel · Roetgen, DE
Wolfgang Busselt · Roetgen, DE
Thomas Juestel · Aachen, DE
Martin Weibrecht · Aachen, DE
Peter Quadflieg · Aachen, DE

Key dates

Filing date	Aug 30, 2001
Grant date	Jul 13, 2004
Priority date	—
Expiry date	Nov 30, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH01J29/26
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a color picture screen with an improved blue light emission. The blue phosphor layer comprises a first blue-emitting phosphor and a second phosphor which shows a light emission in the range from 380 to 450 nm.

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