Front substrate of plasma display panel and fabrication method thereof
View Patent ↗A front substrate for a plasma display panel (PDP) and an associated fabrication method are provided. An upper dielectric layer of the front substrate includes a colorant, which causes the dielectric layer to also act as a color filter. The resulting front substrate enhances at least one of color temperature, color purity, or contrast of the PDP without increasing complexity or cost.
1. A front substrate of a plasma display panel (PDP) including a colorant-added upper dielectric layer, wherein the colorant is Co 2 O 3 .
2. The front substrate of claim 1 , wherein the colorant controls a light transmittance.
3. The front substrate of claim 1 , wherein Co 2 O 3 is added in the range of 0~10 wt %.
4. The front substrate of claim 1 , wherein the colorant is a material for controlling a light transmittance.
5. The front substrate of claim 1 , wherein the upper dielectric layer comprises a glass powder, wherein the glass powder is one of PbO—B 2 O 3 —SiO 2—Al 2 O 3 -RO group, P 2 O 5 —B 2 O 3 —ZnO group, ZnO—B 2 O 3 -RO group, and PbO—B 2 O 3 —SiO 2 —Al 2 O 3 —BaO group.
6. The front substrate of claim 5 , wherein the upper dielectric layer is formed by mixing 65 wt % of PbO, 10 wt % of B 2 O 3 , 20 wt % of SiO 2 and Al 2 O 3 and 5 wt % of RO.
7. The front substrate of claim 6 , wherein the RO is one of BaO, SrO, La 2 O, Bi 2 O 3 , MgO and ZnO.
8. The front substrate of claim 5 , wherein the upper dielectric layer is formed by mixing 41.9 wt %~52.0 wt % of P 2 O 5 , 3.3 wt %~22.0 wt % of B 2 O 3 and 36.1 wt %~44.7 wt % of ZnO.
9. The front substrate of claim 5 , wherein the upper dielectric layer is formed by mixing 34.0 wt % of ZnO, 29 wt % of B 2 O 3 and 37.0 wt % of RO, wherein the RO is one of BaO, SrO, La 2 O, Bi 2 O 3 , MgO and ZnO.
10. A dielectric composition for an upper dielectric layer in a plasma display panel (PDP) comprising:
a glass powder, wherein the glass powder includes P 2 O 5 —B 2 O 3 —ZnO group; and
a colorant, wherein the colorant is Co 2 O 3 .
11. The dielectric composition of claim 10 , wherein the upper dielectric layer is formed by mixing 41.9 wt %~52.0 wt % of P 2 O 5 , 3.3 wt %~22.0 wt % of B 2 O 3 and 36.1 wt %~44.7 wt % of ZnO.
12. The dielectric composition of claim 10 , wherein Co 2 O 3 is added in the range of 0 wt %~10 wt %.
13. An upper dielectric layer in a plasma display panel (PDP) comprising:
a glass powder, wherein the glass powder is one of PbO—B 2 O 3 —SiO 2 Al 2 O 5 -RO group, P 2 O 5 —B 2 O 3 —ZnO group, and ZnO—B 2 O 3 —RO group; and
a colorant, wherein the colorant is Co 2 O 3 .
14. The upper dielectric layer of claim 13 , wherein the upper dielectric layer is formed by mixing 41.9 wt %~52 wt % of P 2 O 5 , 3.3 wt %~22.0 wt % of B 2 O 3 and 36.1 wt %~44.7 wt % of ZnO.
15. The upper dielectric layer of claim 13 , wherein Co 2O 3 is added in the range of 0 wt %~10 wt %.
16. A plasma display panel comprising a front substrate, and an upper dielectric layer on the front substrate, the upper dielectric layer comprising:
a glass powder, wherein the glass powder is P 2 O 5 —B 2 O 3 —ZnO group; and
a colorant, wherein the colorant is Co 2 O 3 .
17. The plasma display panel of claim 16 , wherein the upper dielectric layer is formed by mixing 41.9 wt %~52.0 wt % of P 2 O 5 , 3.3 wt %~22.0 wt % of B 2 O 3 and 36.1 wt %~44.7 wt % of ZnO.
18. The plasma display panel of claim 16 , wherein Co 2 O 3 is added in the range of 0~10 wt %.
19. A method for fabricating a front substrate of a plasma display panel (PDP) comprising:
forming glass powder with a colorant added therein at a prescribed rate, wherein the colorant is Co 2 O 3 ;
forming a dielectric paste by mixing the glass powder, a binder and a solvent, and wherein the glass powder is P 2 O 5 —B 2 O 3 —ZnO group;
coating the dielectric paste at the entire surface of an upper glass substrate with a transparent electrode and a bus electrode formed thereon to form a dielectric paste layer; and
heating the dielectric paste layer to form an upper dielectric layer of the front substrate, wherein the upper dielectric layer is formed by mixing 41.9 wt %~52.0 wt % of P 2 O 5 , 3.3 wt %~22.0 wt % of B 2 O 3 and 36.1 wt %~44.7 wt % of ZnO.
20. The method of claim 19 , wherein Co 2 O 3 is added in the range of 0 ~10 wt %.
21. A plasma display panel (PDP) comprising a front substrate, a back substrate, and a dielectric formed on the front substrate and including Co 2 O 3 .
22. The plasma display panel (PDP) of claim 21 , wherein the Co 2 O 3 is a colorant which controls a light transmittance.
23. The plasma display panel (PDP) of claim 21 , wherein the Co 2 O 3 is added in the range of 0~10 wt % of the dielectric.