Substrate assembly for gas discharge panel having dielectric layer comprising laminate of organic dielectric layer and inorganic dielectric layer, and gas discharge panel

1. A substrate assembly for a gas discharge panel, comprising:

an organic polymer dielectric layer covering a plurality of electrodes arranged on the substrate;

an inorganic dielectric layer provided on the organic polymer dielectric layer, said inorganic dielectric layer consisting of a material selected from a group of SiO 2 , Al 2 O 3 , AlN, Si 3 N 4 and SiC; and

a protective layer of MgO having a porous body of a thickness of 0.5-1.5 μm,

wherein the protective layer of MgO is prevented from direct contact with the organic polymer dielectric layer by the inorganic dielectric layer.

2. The substrate assembly for a gas discharge panel of claim 1 , wherein the organic polymer dielectric layer is made of a material selected from polyimide, polyimide imide, polysiloxane and polysilazane.

3. The substrate assembly for a gas discharge panel of claim 2 , wherein the organic polymer dielectric layer is made of a material selected from polysiloxane and polysilazane each having a side chain selected from alkyl, alkoxy and aryl.

4. The substrate assembly for a gas discharge panel of claim 1 , wherein the inorganic dielectric layer is made of a metal oxide having a smaller bond distance between an oxygen atom and a metal atom than the wavelength of an atom vacuum ultra violet ray.

5. The substrate assembly for a gas discharge panel of claim 1 , wherein the organic polymer dielectric layer has a smaller dielectric constant than that of the inorganic dielectric layer.

6. The substrate assembly of claim 1 , wherein the organic polymer dielectric layer has a thickness of 5-20 μm and the inorganic dielectric layer has a thickness of 0.5-2 μm.

7. A gas discharge panel, comprising:

a substrate assembly as disclosed in claim 1 disposed on a front side of the panel as a front substrate assembly;

a rear substrate assembly facing the front substrate assembly; and

a discharge space formed between the front and rear substrate assemblies,

wherein the rear substrate assembly is provided with barrier ribs for defining the discharge space and phosphors, the barrier ribs being formed on a substrate having electrodes, the phosphors being formed on side walls of the barrier ribs and on the substrate defined by the barrier ribs.