Plasma display panel

• US 20050017637A1
• Filed: 06/23/2004
• Published: 01/27/2005
• Est. Priority Date: 07/22/2003
• Status: Active Grant

• Current Assignee: Samsung SDI Company Limited
• Original Assignee: Samsung SDI Company Limited
• Inventors: Woo, Seok-Gyun, Yoo, Hun-Suk, Kim, Woo-Tae, Kang, Kyoung-Doo, Kwon, Jae-Ik
• Granted Patent: US 7,208,876 B2
• Time in Patent Office: Days
• US Class Current: 313/582
• CPC Class Codes: H01J 11/12 with main electrodes provided on both sides of the discharge space
• CPC Class Codes: H01J 11/24 Sustain electrodes or scan electrodes
• CPC Class Codes: H01J 11/36 Spacers, barriers, ribs, partitions or the like
• CPC Class Codes: H01J 2211/245 Shape, e.g. cross section or pattern
• CPC Class Codes: H01J 2211/365 Pattern of the spacers

Abstract

A plasma display panel. A first substrate and a second substrate are provided opposing one another with a predetermined gap therebetween. Address electrodes are formed on the second substrate. Barrier ribs are mounted between the first substrate and the second substrate, the barrier ribs defining a plurality of discharge cells. Also, red, green, and blue phosphor layers are formed within each of the discharge cells. Discharge sustain electrodes are formed on the first substrate. The barrier ribs comprise first barrier rib members formed substantially parallel to the direction of the address electrodes, and second barrier rib members obliquely connected to the first barrier rib members and intersecting over the address electrodes. The second barrier rib members are formed to different widths according to discharge cell color such that red, green, and blue discharge cells have different volumes.

Claims

1. A plasma display panel, comprising:

a first substrate and a second substrate provided opposing one another with a predetermined gap therebetween;

address electrodes formed on the second substrate;

barrier ribs mounted between the first substrate and the second substrate, the barrier ribs defining a plurality of discharge cells;

red phosphor layers, green phosphor layers, and blue phosphor layers formed within each of respective red discharge cells, green discharge cells and blue discharge cells; and

discharge sustain electrodes formed on the first substrate,

wherein the barrier ribs comprise first barrier rib members formed substantially parallel to the direction of the address electrodes, and second barrier rib members obliquely connected to the first barrier rib members and intersecting over the address electrodes, and

wherein the second barrier rib members are formed to different widths according to discharge cell color such that the red discharge cells, the green discharge cells, and the blue discharge cells have different volumes.

2. The plasma display panel of claim 1, wherein the second barrier rib members are formed along the direction of the address electrodes between pairs of discharge cells adjacent along the same direction and of the same color to thereby define ends of the discharge cells.

3. The plasma display panel of claim 2, wherein the barrier ribs satisfy the following condition,

D₁(R)>

D₁(G)>

D₁(B)

where D₁(R) is a width of the second barrier rib members along the direction of the address electrodes between red discharge cells;

D₁(G) is a width of the second barrier rib members along the direction of the address electrodes between green discharge cells; and

D₁(B) is a width of the second barrier rib members along the direction of the address electrodes between blue discharge cells.

4. The plasma display panel of claim 2, wherein the second barrier rib members formed along the direction of the address electrodes have a common horizontal reference line that passes through centers of the widths of second barrier rib members.

5. The plasma display panel of claim 1, wherein the second barrier rib members comprise non-discharge cells fully encompassed by the second barrier rib members to thereby be positioned between discharge cells adjacent in the direction of the address electrodes.

6. The plasma display panel of claim 5, wherein the non-discharge cells satisfy the following condition,

D₂(R)<

D₂(G)<

D₂(B)

where D₂(R) is a distance between horizontal lines, which are formed along a direction substantially perpendicular to the address electrodes intersecting centers of the discharge cells along the direction of the address electrodes, and closest edges of the non-discharge cells of adjacent pairs of red discharge cells closest to the horizontal lines;

D₂(G) is a distance between the horizontal lines and closest edges of the non-discharge cells of adjacent pairs of green discharge cells closest to the horizontal lines; and

D₂(B) is a distance between the horizontal lines and closest edges of the non-discharge cells of adjacent pairs of blue discharge cells closest to the horizontal lines.

7. The plasma display panel of claim 5, wherein the non-discharge cells have different volumes according to the color of the phosphor layers of the discharge cells adjacent in the direction of the address electrodes.

8. The plasma display panel of claim 7, wherein intervals between the first barrier rib members along the direction substantially perpendicular the direction of the address electrodes are substantially identical, and the non-discharge cells satisfy the following condition,

D₃(R)>

D₃(G)>

D₃(B)

where D₃(R) is a width of the non-discharge regions between red discharge cells adjacent along the direction of the address electrodes;

D₃(G) is a width of the non-discharge regions between green discharge cells adjacent along the direction of the address electrodes; and

D₃(B) is a width of the non-discharge regions between blue discharge cells adjacent along the direction of the address electrodes.

9. A plasma display panel, comprising:

a first substrate and a second substrate provided opposing one another with a predetermined gap therebetween;

address electrodes formed on the second substrate;

barrier ribs mounted between the first substrate and the second substrate, the barrier ribs defining a plurality of discharge cells;

red phosphor layers, green phosphor layers, and blue phosphor layers formed within each of respective red discharge cells, green discharge cells and blue discharge cells; and

discharge sustain electrodes formed on the first substrate,

wherein non-discharge cells are formed between discharge cells in communication with each other to form a single non-discharge cell between adjacent rows of discharge cells, rows of discharge cells being adjacent discharge cells formed along the direction substantially perpendicular to the direction of the address electrodes, and

wherein the discharge cells have lengths that are different according to the respective red color, green color, and blue color of the phosphor layers formed therein such that the discharge cells have different volumes.

10. The plasma display panel of claim 9, wherein each of the barrier ribs comprises first barrier rib members formed substantially parallel to the direction of the address electrodes, and second barrier rib members connected obliquely to the first barrier rib members, and which form the discharge cells in the shape of quadrilateral islands.

11. The plasma display panel of claim 9, wherein the discharge cells satisfy the following condition,

D₄(R)<

D₄(G)<

D₄(B)

where D₄(R) is a length of red discharge cells along the direction of the address electrodes;

D₄(G) is a length of green discharge cells along the direction of the address electrodes; and

D₄(B) is a length of blue discharge cells along the direction of the address electrodes.

12. The plasma display panel of claim 9, wherein the discharge cells have common horizontal lines drawn along the direction substantially perpendicular to the address electrodes intersecting centers of the discharge cells along the direction of address electrodes.

13. The plasma display panel of claim 9, wherein the discharge cells adjacent along the direction of the address electrodes are provided at different distances according to the red color, green color, and blue color of the respective phosphor layers formed therein.

14. The plasma display panel of claim 13, wherein the discharge cells satisfy the following condition,

D₅(R)>

D₅(G)>

D₅(B)

where D₅(R) is a distance between adjacent red discharge cells along the direction of the address electrodes;

D₅(G) is a distance between adjacent green discharge cells along the direction of the address electrodes; and

D₅(B) is a distance between adjacent blue discharge cells along the direction of the address electrodes.

15. The plasma display panel of claim 9, wherein the discharge sustain electrodes include bus electrodes that extend such that a pair of the bus electrodes is provided for each of the discharge cells, and protrusion electrodes formed extending from each of the bus electrodes such that a pair of opposing protrusion electrodes is formed within areas corresponding to each discharge cell.

16. A plasma display panel, comprising:

a first substrate and a second substrate provided opposing one another with a predetermined gap therebetween;

address electrodes formed on the second substrate;

barrier ribs mounted between the first substrate and the second substrate, the barrier ribs defining a plurality of discharge cells and a plurality of non-discharge regions;

red phosphor layers, green phosphor layers, and blue phosphor layers formed within each of respective red discharge cells, green discharge cells and blue discharge cells; and

discharge sustain electrodes formed on the first substrate,

wherein the non-discharge regions are formed in areas encompassed by discharge cell abscissas that pass through centers of adjacent discharge cells and discharge cell ordinates that pass through centers of adjacent discharge cells, the non-discharge regions being at least as large as distal end widths of the barrier ribs forming the discharge cells, and

wherein the discharge cells are formed having different volumes according to the color of the phosphor layers formed therein.

17. The plasma display panel of claim 16, wherein each of the discharge cells is formed such that ends of the discharge cells gradually decrease in width along a direction the discharge sustain electrodes are formed as a distance from a center of the discharge cells is increased along a direction the address electrodes are formed.

18. The plasma display panel of claim 17, wherein ends of the discharge cells are formed in the shape of a trapezoid with a trapezoid end removed.

19. The plasma display panel of claim 16, wherein the barrier ribs comprise first barrier rib members formed substantially parallel to the direction of the address electrodes, and second barrier rib members obliquely connected to the first barrier rib members and intersecting over the address electrodes.

20. The plasma display panel of claim 19, wherein the second barrier rib members are mounted between discharge cells of the same color adjacent along the direction of the address electrodes.

21. The plasma display panel of claim 20, wherein the second barrier rib members are formed with predetermined angle of spread between inner surfaces thereof within each end of the discharge cells.

22. The plasma display panel of claim 21, wherein the second barrier rib members satisfy the following condition,

θ

(R)<

θ

(G)<

θ

(B)

where θ

(R) is an angle of spread between the second barrier rib members at each end of red discharge cells;

θ

(G) is an angle of spread between the second barrier rib members at each end of green discharge cells; and

θ

(B) is an angle of spread between the second barrier rib members at each end of blue discharge cells.

23. The plasma display panel of claim 20, wherein bridge barrier rib members of predetermined lengths are formed extending between each pair of discharge cells adjacent along the direction of the address electrodes.

24. The plasma display panel of claim 23, wherein the bridge barrier rib members satisfy the following condition,

D₆(R)>

D₆(G)>

D₆(B)

where D₆(R) is a length of the bridge barrier rib members along the direction of the address electrodes and between red discharge cells adjacent in the same direction;

D₆(G) is a length of the bridge barrier rib members along the direction of the address electrodes and between green discharge cells adjacent in the same direction; and

D₆(B) is a length of the bridge barrier rib members along the direction of the address electrodes and between blue discharge cells adjacent in the same direction.

25. The plasma display panel of claim 16, wherein each of the non-discharge regions is formed in an independent cell structure surrounded by the barrier ribs.

26. The plasma display panel of claim 25, wherein the non-discharge regions have different volumes.

27. The plasma display panel of claim 16, wherein the discharge sustain electrodes include bus electrodes that extend such that a pair of the bus electrodes is provided for each of the discharge cells, and protrusion electrodes formed extending from each of the bus electrodes such that a pair of opposing protrusion electrodes is formed within areas corresponding to each discharge cell.

28. The plasma display panel of claim 27, wherein proximal ends of the protrusion ends in the area where they are connected to the bus electrodes decrease in width along the direction substantially perpendicular to the direction of the address electrodes as the bus electrodes are approached.

29. The plasma display panel of claim 27, wherein a distal end of at least one of each pair of opposing protrusion electrodes opposite proximal ends connected to and extended from the bus electrodes is formed including an indentation, and a first discharge gap and a second discharge gap of different sizes are formed between distal ends of opposing protrusion electrodes.

30. The plasma display panel of claim 29, wherein the indentations are formed at a center of the protrusion electrodes along the direction substantially perpendicular the direction of the address electrodes.

31. The plasma display panel of claim 29, wherein the discharge cells are filled with discharge gas containing 10% or more Xenon.

32. The plasma display panel of claim 29, wherein the discharge cells are filled with discharge gas containing 10-60% Xenon.

33. The plasma display panel of claim 16, wherein the discharge sustain electrodes include scan electrodes and display electrodes provided such that one scan electrode and one common electrode correspond to each row of the discharge cells, the scan electrodes and the common electrodes including protrusion electrodes that extend into the discharge cells while opposing one another,

wherein the protrusion electrodes are formed such that a width of proximal ends thereof is smaller than a width of distal ends of the protrusion electrodes, and

wherein the address electrodes include line regions formed along a direction the address electrodes are formed, and enlarged regions formed at predetermined locations and expanding along a direction substantially perpendicular to the direction of the line regions to correspond to the shape of protrusion electrodes of the scan electrodes.

34. The plasma display panel of claim 33, wherein the enlarged regions of the address electrodes are formed to a first width at areas opposing the distal ends of the protrusion electrodes, and to a second width that is smaller than the first width at areas opposing the proximal ends of the protrusion electrodes.

35. The plasma display panel of claim 16, wherein the discharge sustain electrodes include scan electrodes and display electrodes provided such that one scan electrode and one display electrode correspond to each row of the discharge cells,

wherein each of the scan electrodes and display electrodes includes bus electrodes extended along a direction substantially perpendicular to the direction the address electrodes are formed, and protrusion electrodes that extend into the discharge cells from the bus electrodes such that the protrusion electrodes of the scan electrodes oppose the protrusion electrodes of the display electrodes, and

wherein one of the bus electrodes of the display electrodes is mounted between adjacent discharge cells of every other row of the discharge cells, and the bus electrodes of the scan electrodes are mounted between adjacent discharge cells and between the bus electrodes of the common electrodes.

36. The plasma display panel of claim 35, wherein the protrusion electrodes of the display electrodes are extended from the bus electrodes of the display electrodes into discharge cells adjacent to opposite sides of the bus electrodes.

37. The plasma display panel of claim 35, wherein the bus electrodes of the display electrodes have a width that is greater than a width of the bus electrodes of the scan electrodes.