Plasma display panel and method of manufacturing same
View Patent ↗The discharge space defined between the front glass substrate and the back glass substrate is filled with a discharge gas including 10 or more vol % of xenon. A MgO layer including MgO crystals causing a cathode-luminescence emission having a peak within a wavelength range of 200 nm to 300 nm upon excitation by an electron beam is provided in a position facing the discharge cell formed in the discharge space.
1. A plasma display panel, equipped with opposing front and back substrates placed on either side of a discharge space, a plurality of row electrode pairs provided between the front and back substrates, and a plurality of column electrodes provided between the front and back substrates and extending in a direction at right angles to the row electrode pairs to form unit light emission areas in the discharge space at positions respectively corresponding to the intersections with the row electrode pairs, comprising:
a discharge gas including 10 or more vol % of xenon and filling the discharge space; and
a magnesium oxide layer including magnesium oxide crystals that have a crystalline structure causing a cathode-luminescence emission having a peak within a wavelength range of 200 nm to 300 nm upon excitation by an electron beam, and provided in a position facing the unit light emission areas,
wherein the magnesium oxide layer has a structure of lamination of a thin-film magnesium oxide layer and a crystalline magnesium oxide layer including the magnesium oxide crystals.
2. A plasma display panel according to claim 1 , wherein the magnesium oxide crystals are magnesium oxide single crystals produced by use of a vapor-phase oxidation technique.
3. A plasma display panel according to claim 1 , wherein the magnesium oxide crystals have a crystalline structure causing a cathode-luminescence emission having a peak within a wavelength range from 230 nm to 250 nm.
4. A plasma display panel according to claim 1 , wherein the magnesium oxide crystals include magnesium oxide crystals having a particle diameter of 2000 or more angstroms.
5. A plasma display panel according to claim 1 , wherein the magnesium oxide layer is formed by spraying a powder of the magnesium oxide crystals on the thin-film magnesium oxide layer.
6. A plasma display panel according to claim 1 , wherein the row electrode pairs and a dielectric layer covering the row electrode pairs are formed on the front substrate and the magnesium oxide layer is formed on the dielectric layer.
7. A plasma display panel according to claim 6 , further comprising a partition wall unit provided between the front substrate and the back substrate for partitioning the discharge space into the unit light emission areas, wherein the column electrodes and a dielectric layer covering the column electrodes are formed on the back substrate, and a phosphor layer covering side faces of the partition wall unit and the dielectric layer covering the column electrodes is formed in each of the unit light emission areas.
8. The plasma display panel according to claim 1 , wherein said magnesium oxide crystals comprise magnesium oxide single crystals.
9. The plasma display panel according to claim 1 , wherein said magnesium oxide layer is formed over an entire surface of said thin-film magnesium oxide layer.
10. The plasma display panel according to claim 1 , wherein said magnesium oxide layer is formed over an entire rear-facing surface of said thin-film magnesium oxide layer.
11. The plasma display panel according to claim 1 , wherein said magnesium oxide layer is formed over less than an entire surface of said thin-film magnesium oxide layer.