Plasma display panel
View Patent ↗A PDP is proposed which has high emission efficiency and which can decrease address discharge voltage. In a column direction of at least one of transparent electrodes, which perform sustain discharge via respective discharge gaps of a pair of row electrodes and constituting a row electrode pair, is set to 150 μm or less, and partial pressure of xenon in discharge gas sealed in a discharge space is set to 6.67 kPa or more. A width of a scan electrode, which is one row electrode of each of the row electrode pair facing the column electrode and to which scan pulse is applied, is wider than a width of the other row electrode of the pair to which discharge sustain voltage is applied.
1. A plasma display panel, comprising:
a pair of substrates facing each other with at least one discharge space therebetween; a plurality of row electrode pairs which extend in a row direction and are formed on one of the substrates, each pair being formed by said row electrodes facing each other via a discharge gap respectively; a dielectric layer formed on the substrate and covering the row electrode pairs; and
a plurality of column electrodes which extend in a column direction and are formed in the row direction on the other substrate, a unit emission area being formed in the discharge space at each portion where the column electrode and row electrode pair cross, and discharge gas containing xenon being sealed in the discharge space, wherein
the dielectric layer comprises a thin film portion and a thick film portion, and
the thin film portion of the dielectric layer is formed to be an area having a width of 150 μm or less in a column direction on at least one of the said row electrode of the row electrode pair, and a thin film having a width in the column direction wider than the width in the column direction of the thin film which is set to 150 μm or less is formed on the other row electrode of the row electrode pair, and
a partial pressure of xenon in the discharge gas is set to 6.67 kPa or more.
2. The plasma display panel according to claim 1 , wherein the thickness of the thick film portion of the dielectric layer is set to double the thickness of the thin film portion of the dielectric layer or more.
3. The plasma display panel according to claim 2 , wherein the thin film portion of the dielectric layer is formed in a strip shape extending in the row direction.
4. The plasma display panel according to claim 2 , wherein the thin film portion of the dielectric layer is formed in an island shape for each unit emission area, and the thick film portion is formed substantially in a lattice shape.
5. The plasma display panel according to claim 2 , wherein barriers are formed substantially in a lattice shape between the pair of substrates, by a plurality of first wall sections of the barriers which extend in the row direction and a plurality of second wall sections of the barriers which extend in the column direction, and a discharge space is divided into individual unit emission areas by the barriers, and the row electrode is disposed at a position facing the unit emission area obtained by division by the barriers respectively.
6. The plasma display panel according to claim 1 , wherein the thin film portion of the dielectric layer is formed in a strip shape extending in the row direction.
7. The plasma display panel according to claim 1 , wherein the thin film portion of the dielectric layer is formed in an island shape for each unit emission area, and the thick film portion is formed substantially in a lattice shape.
8. The plasma display panel according to claim 1 , wherein barriers are formed substantially in a lattice shape between the pair of substrates, by a plurality of first wall sections of the barriers which extend in the row direction and a plurality of second wall sections of the barriers which extend in the column direction, and a discharge space is divided into individual unit emission areas by the barriers, and the row electrode is disposed at a position facing the unit emission area obtained by division by the barriers respectively.
9. A plasma display panel, comprising:
a pair of substrates facing each other with at least one discharge space therebetween;
a plurality of row electrode pairs which extend in a row direction and are formed on one of the substrates, each pair being formed by said row electrodes facing each other via a discharge gap respectively;
a dielectric layer formed on one substrate side and covering the row electrode pairs; and a plurality of column electrodes which extend in a column direction and are formed in the row direction on the other substrate side, a unit emission area being formed in a discharge space at each portion where the column electrode and row electrode pair cross, and discharge gas containing xenon being sealed in the discharge space, wherein
a secondary electron emission layer of which width in the column direction is 150 μm or less is formed with a high γ material on a dielectric layer covering at least one row electrode out of the row electric pairs, and a secondary electron emission layer, of which width in the column direction is wider than the column direction width of the high γ material being set to 150 μm or less, is formed with a high γ material on a dielectric layer covering the other row electrodes of the row electrode pairs, and
a partial pressure of xenon in the discharge gas is set to 6.67 kPa or more.