Plasma display panel with defined phosphor layer thicknesses

• US 7,164,231 B2
• Filed: 11/22/2004
• Issued: 01/16/2007
• Est. Priority Date: 11/24/2003
• Status: Expired due to Fees

• Current Assignee: Samsung SDI Company Limited
• Original Assignee: Samsung SDI Company Limited
• Inventors: Seo, Seung-Beom, Choi, Seo-Young
• Primary Examiner(s): Patel; Nimeshkumar D.
• Assistant Examiner(s): MACCHIAROLO, PETER J
• Application Number:
  US10/996,581
• Publication Number:
  US 20050110410A1
• Time in Patent Office: 785 Days
• Field of Search: 313/582, 313/587, 313/485
• US Class Current: 313/587
• CPC Class Codes: H01J 11/12 with main electrodes provided on both sides of the discharge space
• CPC Class Codes: H01J 11/42 Fluorescent layers

Abstract

A plasma display panel includes a red phosphor layer, a green phosphor layer, and a blue phosphor layer. The thickness of the phosphor layer is satisfied by the following condition: when D is (S−2L)/S, D≧0.64, S being a distance between barrier ribs at half the height of the barrier ribs, and L being a side thickness of the phosphor layer coated on the barrier ribs at half the height thereof.

Claims

1. A plasma display panel comprising:

a red phosphor layer, a green phosphor layer, and a blue phosphor layer,

wherein the thickness of a phosphor layer coated on a barrier rib is satisfied by the following condition;

D≧

0.64

D being a discharge space ratio value defined by (S−

2L)/S;

S being a distance between barrier ribs at half the height of the barrier ribs; and

L being a side thickness of the phosphor layer coated on the barrier ribs at half the height of the barrier ribs.

2. The plasma display panel according to claim 1, wherein at least one of the side thicknesses of the red phosphor layer, the green phosphor layer and the blue phosphor layer at half the height of the barrier ribs is different from each other.

3. The plasma display panel according to claim 2, which is satisfied by the conditions of 0.73≦

D_r≦

0.89, 0.64≦

D_g≦

0.89, and 0.76≦

D_b≦

0.89, when D_r, D_g, and D_b respectively represent discharge space ratio values D of a red discharge cell, a green discharge cell, and a blue discharge cell which are respectively formed with the red phosphor layer, the green phosphor layer and the blue phosphor layer.

4. The plasma display panel according to claim 1, which is satisfied by the condition of T_r<

T_g≦

T_b, when T_r,T_g, and T_b respectively represent the side thickness T of the red phosphor layer, the green phosphor layer and the blue phosphor layer.

5. The plasma display panel according to claim 1, which is satisfied by the condition of D_r>

D_g≧

D_b, when D_r, D_g, and D_b respectively represent the discharge cell values D of a red discharge cell, a green discharge cell, and a blue discharge cell which are respectively formed with the red phosphor layer, the green phosphor layer and the blue phosphor layer.

6. The plasma display panel according to claim 1, wherein a D_r/(D_g or D_b) ratio, where D_r, D_g, and D_b respectively represent the discharge cell values D of a red discharge cell, a green discharge cell, and a blue discharge cell which are respectively formed with the red phosphor layer, the green phosphor layer and the blue phosphor layer, is within the range of 1.1 to 1.4.

7. The plasma display panel according to claim 1, wherein the green phosphor is selected from the group consisting of Zn₂SiO₄:

Mn, (Zn,A)₂SiO₄;

Mn (where A is an alkaline metal), and a mixture thereof.

8. The plasma display panel according to claim 7, wherein the green phosphor further comprises at least one phosphor selected from the group consisting of BaAl₁₂O₁₉:

Mn, (Ba, Sr, Mg)O;

α

Al₂O₃;

Mn (where α

is from 1 to

     23), MgAl_xO_y;

Mn (where x is from 1 to 10, and y is from 1 to

     30), LaMgAl_xO_y;

Tb,Mn (where x is from 1 to 14, and y is from 8 to

     47), and ReBO₃;

Tb (where Re is at least one rare earth element selected from the group consisting of Sc, Y, La, Ce, and Gd).

9. The plasma display panel according to claim 1, wherein the blue phosphor is selected from the group consisting of BaMgAl₁₀O₁₇:

Eu, CaMgSi₂O₆;

Eu, CaWO₄;

Pb, Y₂SiO₅;

Eu, and a mixture thereof.

10. A plasma display panel comprising:

a red phosphor layer, a green phosphor layer, and a blue phosphor layer,

which is satisfied by the condition of D_r>

D_g≧

D_b, when D_r, D_g, and D_b respectively represent the D values of a red discharge cell, a green discharge cell, and a blue discharge cell which are respectively formed with red, green, and blue phosphor layers, and

the thickness of a phosphor layer coated on a barrier rib is satisfied by the following condition;

D≧

0.64

D being a discharge space ratio value defined by (S−

2L)/S;

S being a distance between barrier ribs at half the height of the barrier ribs; and

L being a side thickness of the phosphor layer coated on the barrier ribs at half the height of the barrier ribs.

11. The plasma display panel according to claim 10, wherein the side thickness of the phosphor layer is adjusted to satisfy the condition of 0.73≦

D≦

0.89.

12. The plasma display panel according to claim 10, which is satisfied by the conditions of 0.73≦

D_r≦

0.89, 0.64≦

D_g≦

0.89, and 0.76≦

D_b≦

0.89, when D_r, D_g and D_b respectively represent discharge space ratio values D of a red discharge cell, a green discharge cell, a green discharge cell, and a blue discharge cell which are respectively formed with the red phosphor layer, the green phosphor layer and the blue phosphor layer.

13. The plasma display panel according to claim 10, which is satisfied by the condition of T_r<

T_g≦

T_b, when T_r, T_g, and T_b respectively represent the side thickness T of the red, the green, and the blue phosphor layers.

14. The plasma display panel according to claim 10, wherein a D_r/(D_{g or} D_b) ratio, where D_r, D_g, D_b respectively represent the discharge cell value D of a red discharge cell, a green discharge cell, and a blue discharge cell which are respectively formed with the red phosphor layer, the green phosphor layer and the blue phosphor layer, is within the range of 1.1 to 1.4.

15. The plasma display panel according to claim 10, wherein the green phosphor is selected from the group consisting of Zn₂SiO₄:

Mn, (Zn,A)₂SiO₄;

Mn (where A is an alkaline metal), and a mixture thereof.

16. The plasma display panel according to claim 15, wherein the green phosphor further comprises at least one phosphor selected from the group consisting of BaAl₁₂O₁₉:

Mn, (Ba, Sr, Mg)O.α

Al₂O₃;

Mn (where α

is from 1 to

     23), MgAl_xO_y;

Mn (where x is from 1 to 10, and y is from 1 to

     30), LaMgAl_xO_y;

Tb,Mn (where x is from 1 to 14, and y is from 8 to

     47), and ReBO₃;

Tb (where Re is at least one rare earth element selected from the group consisting of Sc, Y, La, Ce, and Gd).

17. The plasma display panel according to claim 10, wherein the blue phosphor is selected from the group consisting of BaMgAl₁₀O₁₇:

Eu, CaMgSi₂O₆;

Eu, CaWO₄;

Pb, Y₂SiO₅;

Eu, and a mixture thereof.