Plasma display panel having bus electrodes extending across areas of non-discharge regions

• US 7,605,537 B2
• Filed: 06/18/2004
• Issued: 10/20/2009
• Est. Priority Date: 06/19/2003
• Status: Expired due to Fees

• 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
• Primary Examiner(s): Patel; Nimeshkumar D.
• Assistant Examiner(s): Walford; Natalie K
• Application Number:
  US10/871,427
• Publication Number:
  US 20040256989A1
• Time in Patent Office: 1,950 Days
• Field of Search: 313/582, 313/584, 313/585
• 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 includes first and second substrates opposing one another. Address electrodes are formed on the second substrate. Barrier ribs are mounted between the first and second substrates defining discharge cells and non-discharge regions. Phosphor layers are formed within each of the discharge cells. Discharge sustain electrodes are formed on the first substrate. The non-discharge regions are formed in areas encompassed by discharge cell abscissas and ordinates passing through centers of the discharge cells. Further, the discharge cells are formed such that ends thereof increasingly decrease in width as a distance from centers of the discharge cells is increased. The discharge sustain electrodes include bus electrodes that extend perpendicular to the address electrodes and outside areas of the discharge cells but across areas of the non-discharge regions, and protrusion electrodes formed extending from each of the bus electrodes.

Claims

1. A plasma display panel comprising:

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

address electrodes on the second substrate;

barrier ribs between the first substrate and the second substrate, the barrier ribs comprising walls for a plurality of discharge cells and for a plurality of non-discharge regions;

a phosphor layer within each of the discharge cells; and

discharge sustain electrodes on the first substrate and extending in a direction crossing the address electrodes,

wherein the non-discharge regions are in areas encompassed by discharge cell abscissas through centers of adjacent said discharge cells and discharge cell ordinates through centers of adjacent said discharge cells, the discharge cell ordinates being parallel with the address electrodes,

wherein ends of the discharge cells gradually decrease in width along the extending direction of the discharge sustain electrodes as a distance from a center of a corresponding one of the discharge cells is increased along an extending direction of the address electrodes, and

wherein the discharge sustain electrodes include bus electrodes extending in a direction substantially perpendicular to the extending direction of the address electrodes and outside areas of the discharge cells but across areas of the non-discharge regions, and protrusion electrodes extending from each of the bus electrodes such that a pair of opposing said protrusion electrodes is in an area corresponding to one of the discharge cells.

2. The plasma display panel of claim 1, wherein the barrier ribs of adjacent said discharge cells form the non-discharge regions into cell structures.

3. The plasma display panel of claim 2, wherein the non-discharge regions are formed by the barrier ribs separating diagonally the adjacent said discharge cells.

4. The plasma display panel of claim 2, wherein each of the non-discharge regions having a cell structure is divided into a plurality of individual cells.

5. The plasma display panel of claim 1, wherein the ends of the discharge cells are in the shape of a trapezoid with base removed.

6. The plasma display panel of claim 1, wherein the ends of the discharge cells are arc-shaped.

7. The plasma display panel of claim 1, wherein a width of proximal ends of the protrusion electrodes corresponding to the location of the ends of the discharge cells decreases as a distance from a center of a corresponding one of the discharge cells is increased.

8. The plasma display panel of claim 7, wherein both sides of the proximal ends are formed uniformly with inner walls of the corresponding one of the discharge cells.

9. The plasma display panel of claim 7, wherein distal ends of the protrusion electrodes of at least one of each pair of the discharge sustain electrodes are indented to form indentations, thereby forming a first discharge gap and a second discharge gap of different sizes between the opposing said protrusion electrodes.

10. The plasma display panel of claim 9, wherein the indentations are at center areas of the distal ends of the protrusion electrodes along the direction substantially perpendicular to the extending direction of the address electrodes.

11. The plasma display panel of claim 9, wherein sections at both sides of the indentations protrude.

12. The plasma display panel of claim 1, wherein the barrier ribs comprise first barrier rib members substantially parallel to the extending direction of the address electrodes, and second barrier rib members in a direction oblique to the extending direction of the address electrodes, and

wherein the second barrier rib members are at an angle to the extending direction of the address electrodes to cross over the address electrodes.

13. The plasma display panel of claim 12, wherein the first barrier rib members and the second barrier rib members are at different heights.

14. The plasma display panel of claim 13, wherein a height of the first barrier rib members is greater than a height of the second barrier rib members.

15. The plasma display panel of claim 13, wherein a height of the first barrier rib members is less than a height of the second barrier rib members.

16. The plasma display panel of claim 9, wherein the discharge cells include discharge gas containing 10% or more Xenon.

17. The plasma display panel of claim 16, wherein the discharge cells include discharge gas containing 10-60% Xenon.

18. The plasma display panel of claim 1, wherein ventilation paths are on the barrier ribs of the non-discharge regions.

19. The plasma display panel of claim 18, wherein the ventilation paths are grooves in the barrier ribs to communicate the discharge cells with the non-discharge regions.

20. The plasma display panel of claim 19, wherein the grooves have substantially an elliptical planar configuration.

21. The plasma display panel of claim 19, wherein the grooves have substantially a rectangular planar configuration.

22. The plasma display panel of claim 1, wherein the discharge sustain electrodes comprise scan electrodes and display electrodes, one said scan electrode and one said display electrode corresponding to a row of the discharge cells, the scan electrodes and the display electrodes comprising protrusion electrodes extending into the discharge cells while opposing one another,

wherein a width of proximal ends of the protrusion electrodes is smaller than a width of distal ends of the protrusion electrodes, and

wherein the address electrodes comprise line regions extending in the extending direction of the address electrodes, and enlarged regions expanding along a direction substantially perpendicular to the extending direction of the line regions to correspond to the shape of protrusion electrodes of the scan electrodes.

23. The plasma display panel of claim 22, wherein the enlarged regions of the address electrodes have a first width at areas opposing the distal ends of the protrusion electrodes, and a second width smaller than the first width at areas opposing the proximal ends of the protrusion electrodes.

24. The plasma display panel of claim 1, wherein the discharge sustain electrodes comprise scan electrodes and display electrodes, one said scan electrode and one said display electrode corresponding to a row of the discharge cells,

wherein each of the scan electrodes and the display electrodes includes a bus electrode extending in a direction substantially perpendicular to the extending direction of the address electrodes, and protrusion electrodes extending into the discharge cells from the bus electrode such that the protrusion electrodes of the scan electrodes oppose the protrusion electrodes of the display electrodes, and

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

25. The plasma display panel of claim 24, wherein the protrusion electrodes of the display electrodes extend from the bus electrodes of the display electrodes into discharge cells adjacent to opposite sides of the bus electrodes.

26. The plasma display panel of claim 24, wherein the bus electrodes of the display electrodes have a width greater than a width of the bus electrodes of the scan electrodes.

27. The plasma display panel of claim 1, wherein the bus electrodes comprise projections extending from the bus electrodes in an extending direction of the protrusion electrodes.

28. The plasma display panel of claim 27, wherein the projections of the bus electrodes are between the discharge cells adjacent in the extending direction of the protrusion electrodes.

29. The plasma display panel of claim 27, wherein the projections of the bus electrodes extend over predetermined areas of the non-discharge regions and the barrier ribs.