Plasma display panel (PDP)

• US 20080111487A1
• Filed: 11/08/2007
• Published: 05/15/2008
• Est. Priority Date: 11/09/2006
• Status: Active Grant

• Current Assignee: Samsung SDI Company Limited
• Original Assignee: Samsung SDI Company Limited
• Inventors: Choo, Seong-Hun
• Granted Patent: US 7,906,908 B2
• Time in Patent Office: Days
• US Class Current: 313/586
• CPC Class Codes: H01J 11/12 with main electrodes provided on both sides of the discharge space
• CPC Class Codes: H01J 11/38 Dielectric or insulating layers
• CPC Class Codes: H01J 2211/444 Means for improving contrast or colour purity, e.g. black matrix or light shielding means

Abstract

A Plasma Display Panel (PDP) includes: a first substrate and a second substrate that are arranged in parallel with each other with a predetermined distance therebetween; a plurality of address electrodes arranged on the first substrate; a first dielectric layer arranged to cover the address electrodes; a plurality of barrier ribs having a predetermined height from the first dielectric layer to define discharge cells; red, blue, and green phosphor layers respectively arranged in the discharge cells; a plurality of display electrodes arranged on one side of the second substrate facing the first substrate in a direction crossing the address electrodes; a second dielectric layer arranged to cover the display electrodes; and a protective layer arranged to cover the second dielectric layer. The second dielectric layer satisfies values of CIE L*a*b* where 70.0<L*<74.5, 0.0<a*<1.0, and −5.0<b*<−8.0.

Claims

1. A Plasma Display Panel (PDP) comprising:

a first substrate and a second substrate that are arranged in parallel with each other with a predetermined distance therebetween;

a plurality of address electrodes arranged on the first substrate;

a first dielectric layer arranged to cover the address electrodes;

a plurality of barrier ribs having a predetermined height from the first dielectric layer to define discharge cells;

red, blue, and green phosphor layers respectively arranged in the discharge cells;

a plurality of display electrodes arranged on one side of the second substrate facing the first substrate in a direction crossing the address electrodes;

a second dielectric layer arranged to cover the display electrodes; and

a protective layer arranged to cover the second dielectric layer;

wherein the second dielectric layer satisfies values of CIE L*a*b* where 70.0<

L*<

74.5, 0.0<

a*<

1.0, and −

5.0<

b*<

−

8.0.

2. The PDP of claim 1, wherein the second dielectric layer comprises a glass powder composition to form the dielectric layer and a coloring pigment, and wherein the coloring pigment is included in an amount in a range of 1.0 to 2.0 wt % based on the total weight of the dielectric layer.

3. The PDP of claim 2, wherein the coloring pigment comprises at least one oxide selected from the group consisting of Mn₂O₃, NiO, CoO, CuO, and combinations thereof.

4. The PDP of claim 2, wherein the coloring pigment comprises 0.27 to 0.35 wt % of Mn₂O₃, 0.07 to 0.15 wt % of NiO, 0.45 to 0.65 wt % of CoO, and 0.15 to 0.35 wt % of CuO.

5. The PDP of claim 2, wherein the glass powder composition to form the dielectric layer comprises 0.5 to 1.5 parts by weight of SiO₂, 15 to 18 parts by weight of B₂O₃, 3 to 5 parts by weight of Al₂O₃, 40 to 43 parts by weight of Bi₂O₃, 13 to 16 parts by weight of BaO, and 20 to 23 parts by weight of ZnO.

6. The PDP of claim 1, wherein the barrier ribs satisfy values of CIE L*a*b* where 40<

L*<

50, 1.0<

a*<

2.0, and 1.0<

b*<

3.0.

7. The PDP of claim 1, wherein the barrier ribs comprise a glass powder composition to form the barrier ribs and a coloring pigment, and wherein the coloring pigment is included in an amount less than or equal to 1 wt % based on the total weight of the barrier ribs.

8. The PDP of claim 7, wherein the barrier ribs comprise a coloring pigment in an amount in a range of 0.1 to 1.0 wt % based on the total weight of the barrier ribs.

9. The PDP of claim 7, wherein the coloring pigment comprises at least one pigment selected from the group consisting of TiO₂, MnO₂, SbO₂, (Ti, Mn, Sb)O₂, (Cu, Cr)O₂, and combinations thereof.

10. The PDP of claim 7, wherein the glass powder composition to form the barrier ribs comprises at least one composition selected from the group consisting of:

a non-lead glass composition including 20 to 70 parts by weight of ZnO, 10 to 50 parts by weight of BaO, 10 to 40 parts by weight of B₂O₃, 0 to 20 parts by weight of P₂O₅, 0 to 20 parts by weight of SiO₂, 0 to 20 parts by weight of Bi₂O₃, 0 to 30 parts by weight of V₂O₅, 0 to 10 parts by weight of an oxide selected from the group consisting of Na₂O, Li₂O, K₂O, and combinations thereof, 0 to 10 parts by weight of CaO, 0 to 10 parts by weight of MgO, 0 to 30 parts by weight of SrO, 0 to 20 parts by weight of MoO₃, 0 to 10 parts by weight of Al₂O₃, 0 to 10 parts by weight of an oxide selected from the group consisting of Sb₂O₃, CuO, Cr₂O₃, As₂O₃, CoO, NiO, and combinations thereof, and 0 to 10 parts by weight of TiO₂;

a non-lead glass composition including 30 to 45 parts by weight of ZnO, 10 to 25 parts by weight of BaO, 20 to 35 parts by weight of B₂O₃, 5 to 20 parts by weight of P₂O₅, 0 to 20 parts by weight of SiO₂, 0 to 20 parts by weight of Bi₂O₃, 0 to 30 parts by weight of V₂O₅, 0 to 10 parts by weight of an oxide selected from the group consisting of Na₂O, Li₂O, K₂O, and combinations thereof, 0 to 10 parts by weight of CaO, 0 to 10 parts by weight of MgO, 0 to 30 parts by weight of SrO, 0 to 20 parts by weight of MoO₃, 0 to 10 parts by weight of an oxide selected from the group consisting of Sb₂O₃, CuO, Cr₂O₃, As₂O₃, CoO, NiO, and combinations thereof, 0 to 10 parts by weight of Al₂O₃, and 0 to 10 parts by weight of TiO₂;

a non-lead glass composition including 30 to 45 parts by weight of ZnO, 10 to 25 parts by weight of BaO, 20 to 35 parts by weight of B₂O₃, 5 to 20 parts by weight of P₂O₅, 0 to 2 parts by weight of Na₂O, 0 to 2 parts by weight of Li₂O, and 0 to 2 parts by weight of TiO₂;

a non-lead glass composition including 5 to 21 parts by weight of ZnO, 5 to 31 parts by weight of B₂O₃, 34 to 85 parts by weight of Bi₂O₃, 0 to 19 parts by weight of SiO₂, O to 9 parts by weight of Al₂O₃, 0 to 15 parts by weight of an oxide selected from the group consisting of Na₂O, Li₂O, K₂O, and combinations thereof, 0 to 20 parts by weight of an oxide selected from the group consisting of CaO, BaO, MgO, SrO, and combinations thereof, and 0 to 9 parts by weight of ZrO₂;

a non-lead glass composition including 39 to 66 parts by weight of ZnO, 5 to 35 parts by weight of Bi₂O₃, 5 to 33 parts by weight of B₂O₃, 2 to 15 weight of SiO₂, 0 to 15 parts by weight of an oxide selected from the group consisting of Na₂O, Li₂O, K₂O, and combinations thereof, and 0 to 20 parts by weight of an oxide selected from the group consisting of CaO, BaO, MgO, SrO, and combinations thereof; and

a non-lead glass composition including 10 to 41 parts by weight of ZnO, 5 to 41 parts by weight of B₂O₃, 5 to 35 parts by weight of Bi₂O₃, 0 to 10 parts by weight of SiO₂, 0 to 15 parts by weight of an oxide selected from the group consisting of Na₂O, Li₂O, K₂O, and combinations thereof, 0 to 20 parts by weight of an oxide selected from the group consisting of CaO, BaO, MgO, SrO, and combinations thereof, and 45 to 72 parts by weight of P₂O₅.

11. The PDP of claim 1, comprising an external light reflection brightness of less than or equal to 8 cd/m².