Patent · US Expired

Color picture screen with color filter

US6756727B2 · kind B2 · utility

1Cited by

13References

7Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Hans-Helmut Bechtel · Roetgen, DE
Harald Gläser · Aachen, DE
Joachim Opitz · Aachen, DE

Key dates

Filing date	Apr 23, 2001
Grant date	Jun 29, 2004
Priority date	—
Expiry date	Mar 2, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH01J2211/44
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention describes a color picture screen with an enhanced contrast. The color picture screen comprises a color filter layer between the picture screen glass and the phosphor layer, which filter layer comprises a red pigment in the areas of the red phosphors, a blue pigment in the areas of the blue phosphors, and a blue or a red pigment in the areas of the green phosphors.

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