US 2010/0060139 A1 · MATERIAL FOR FORMING PROTECTIVE LAYER, METHOD OF PREPARING THE MATERIAL, AND PDP COMPRISING THE PROTECTIVE LAYER

Abstract

Disclosed is a material for forming a protective layer, a protective layer employing the material and a PDP with the protective layer. Unlike conventional protective layers which employ MgO created in conditions of pressurized artificial gas, the instant protective layer uses MgO created by heating Mg and allowing it to oxidize naturally in air. The result is MgO with fewer defects that is more effective as a protective layer in many uses, such as in a PDP. The instant MgO also shows many specific spectral characteristics and contains impurities in amounts of less than about 2 ppm each. Also disclosed is a PDP which takes advantage of the advantages of the inventive protective layer.

Claims17

Dependent claims

A MgO powder prepared by the method comprising:

heating Mg in air to a temperature sufficient to generate Mg vapor;
allowing the Mg to react with the air and become naturally oxidized to yield the MgO powder,
wherein the magnesium oxide powder has a first cathode-luminescence spectrum emission peak at a wavelength from about 300 nm to about 370 nm, and a second emission peak at a wavelength from about 600 to about 640 nm,
and wherein the intensity ratio of the first emission peak to the second emission peak is from about 1:0.4 to about 1:0.6.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

12/408,600Filed 20 Mar 2009

Priority

5 Sep 2008

Published

11 Mar 2010

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

C01F 5/04
Magnesia: by oxidation of metallic magnesium
C01F 5/02
Compounds of magnesium: magnesia
H01J 11/12
AC-PDPs with at least one main electrode being out of contact with the plasma: with main electrodes provided on both sides of the discharge space
H01J 11/40
Vessels, containers or parts thereof, e.g. substrates: layers for protecting or enhancing the electron emission, e.g. MgO layers

Material for forming protective layer, method of preparing the material, and pdp comprising the protective layer

Life of this patent

Material for forming protective layer, method of preparing the material, and pdp comprising the protective layer

Life of this patent

Abstract

Claims17