Plasma picture screen with terbium(III)-activated phosphor

US6462473B1 · kind B1 · utility

Assignee

• KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

• Thomas Juestel · Aachen, DE
• Gerhard Spekowius · Straelen, DE
• Sybrandus Van Heusden · Eindhoven, NL
• Gerrit Oversluizen · Eindhoven, NL
• Siebe Tjerk De Zwart · Valkenswaard, NL

Key dates

• Filing date: May 18, 2001
• Grant date: Oct 8, 2002
• Expiry date: May 18, 2021

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01J2211/42
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A plasma picture screen is provided with a front plate, which comprises a glass plate on which a dielectric layer and a protective layer are provided, with a carrier plate provided with a phosphor layer comprising a red and a blue phosphor as well as a green, Tb3+-activated phosphor, with a ribbed structure that subdivides the space between the front plate and the carrier plate into plasma cells filled with a gas comprising xenon, and with one or several electrode arrays on the front plate and the carrier plate for generating corona discharges in the plasma cells. The gas comprises xenon in a proportion of between 5 and 30% by volume.