Plasma display panel

• US 7,327,083 B2
• Filed: 06/14/2004
• Issued: 02/05/2008
• Est. Priority Date: 06/25/2003
• Status: Expired due to Fees

• Current Assignee: Samsung SDI Company Limited
• Original Assignee: Samsung SDI Company Limited
• Inventors: Woo, Seok-Gyun, Yoo, Hun-Suk, Kweon, Tae-Joung, Heo, Eun-Gi, Kim, Woo-Tae, Kang, Kyoung-Doo, Kwon, Jae-Ik
• Primary Examiner(s): Patel; Ashok
• Application Number:
  US10/867,857
• Publication Number:
  US 20040263078A1
• Time in Patent Office: 1,331 Days
• Field of Search: 313582-587
• 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 11/24 Sustain electrodes or scan electrodes
• CPC Class Codes: H01J 11/36 Spacers, barriers, ribs, partitions or the like
• CPC Class Codes: H01J 11/44 Optical arrangements or shielding arrangements, e.g. filters, black matrices, light reflecting means or electromagnetic shielding means
• CPC Class Codes: H01J 2211/245 Shape, e.g. cross section or pattern
• CPC Class Codes: H01J 2211/365 Pattern of the spacers
• 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. 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 and a plurality of 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 that pass through centers of each of the discharge cells. Also, external light absorbing members are formed between the second substrate and the barrier ribs layer at areas corresponding to locations of the non-discharge regions.

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 defining a plurality of discharge cells and a plurality of non-discharge regions;

a phosphor layer within each of the discharge cells; and

discharge sustain electrodes on the first substrate in a direction intersecting the address electrodes,

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

wherein external light absorbing members are between the second substrate and the barrier ribs layer at areas corresponding to locations of the non-discharge regions.

2. The plasma display panel of claim 1, wherein the external light absorbing members have a planar shape similar to a planar shape of the non-discharge regions.

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

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

5. The plasma display panel of claim 1, wherein ends of the discharge cells gradually decrease in width along the direction of the discharge sustain electrodes as a distance from a center of the discharge cells is increased along a direction of the address electrodes.

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

7. The plasma display panel of claim 6, wherein the second barrier rib members are at a predetermined angle to the direction of the address electrodes to intersect over the address electrodes.

8. The plasma display panel of claim 1, wherein the external light absorbing members are adjacent to the dielectric layer.

9. The plasma display panel of claim 8, wherein the external light absorbing members are on the dielectric layer.

10. The plasma display panel of claim 8, wherein grooves are in the dielectric layer at areas corresponding to locations of the non-discharge regions, the external light absorbing members being positioned in the grooves.

11. The plasma display panel of claim 8, wherein the external light absorbing members are black films.

12. The plasma display panel of claim 1, wherein the external light absorbing members are realized by forming areas of the dielectric layer corresponding to locations of the non-discharge regions as tinted sections able to absorb external light.

13. The plasma display panel of claim 12, wherein the tinted sections are one of black coloring, blue coloring, or a mixture of black coloring and blue coloring.

14. The plasma display panel of claim 13, wherein the black coloring is selected from the group consisting of FeO, RuO₂, TiO, Ti₃O₅, Ni₂O₃, CrO₂, MnO₂, Mn₂O₃, Mo₂O₃, Fe₃O₄, or any combination of these compounds.

15. The plasma display panel of claim 13, wherein the blue coloring is selected from the group consisting of Co₂O₃, CoO, Nd₂O₃, or any combination of these compounds.

16. The plasma display panel of claim 1, wherein each of the discharge sustain electrodes includes bus electrodes extending such that a pair of the bus electrodes is provided for each of the discharge cells, protrusion electrodes extending from each of the bus electrodes such that a pair of opposing protrusion electrodes is within areas corresponding to each discharge cell,

wherein proximal ends of the protrusion electrodes decrease in width along the direction of the discharge sustain electrodes as a distance from a center of the discharge cells is increased along a direction of the address electrodes are formed,

wherein distal ends of the protrusion electrodes connected to and extended from the bus electrodes have an indentation, and a first discharge gap and a second discharge gap of different sizes between distal ends of opposing protrusion electrodes.

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

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

19. The plasma display panel of claim 1, wherein the discharge sustain electrodes include scan electrodes and display electrodes such that one scan electrode and one display electrode correspond to each row of the discharge cells, the scan electrodes and the display electrodes including protrusion electrodes extending into the discharge cells while opposing one another,

wherein the protrusion electrodes have a width of protrusion electrode proximal ends smaller than a width of protrusion electrode distal ends,

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

20. The plasma display panel of claim 19, wherein the enlarged regions of the address electrodes have a first width at areas opposing the protrusion electrode distal ends, and a second width smaller than the first width at areas opposing the protrusion electrode proximal ends.

21. The plasma display panel of claim 1, wherein the discharge sustain electrodes include scan electrodes and display electrodes 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 a direction of the address electrodes, protrusion electrodes extending 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,

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

22. The plasma display panel of claim 21, 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.

23. The plasma display panel of claim 21, wherein the bus electrodes of the display electrodes have a width greater than a width of the bus electrodes of the scan electrodes.

24. 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 defining a plurality of discharge cells and a plurality of non-discharge regions;

a phosphor layer within each of the discharge cells; and

discharge sustain electrodes on the first substrate in a direction intersecting a direction of the address electrodes,

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

wherein external light absorbing members are on an outer surface of the first substrate at areas corresponding to locations of the non-discharge regions.

25. The plasma display panel of claim 24, wherein the external light absorbing members have a planar shape similar to a planar shape of the non-discharge regions.

26. The plasma display panel of claim 24, wherein grooves are formed to a depth in an outer surface of the first substrate at areas corresponding to the location of the non-discharge regions, light absorbing material being in the grooves.

27. The plasma display panel of claim 26, wherein the depth is 100-300 μ

m.

28. The plasma display panel of claim 26, wherein the light absorbing material is black.

29. The plasma display panel of claim 24, wherein the barrier ribs defining adjacent discharge cells form the non-discharge regions into cell structures.

30. The plasma display panel of claim 24, wherein ends of the discharge cells gradually decrease in width along the direction of the discharge sustain electrodes as a distance from a center of the discharge cells is increased along a direction of the address electrodes.

31. The plasma display panel of claim 24, wherein each of the discharge sustain electrodes includes bus electrodes extending such that a pair of the bus electrodes is provided for each of the discharge cells, and protrusion electrodes extending from each of the bus electrodes such that a pair of opposing protrusion electrodes is within areas corresponding to each discharge cell,

wherein proximal ends of the protrusion electrodes decrease in width along a direction of the discharge sustain electrodes as a distance from a center of the discharge cells is increased along a direction of the address electrodes,

wherein distal ends of the protrusion electrodes connected to and extended from the bus electrodes have an indentation, and a first discharge gap and a second discharge gap of different sizes between distal ends of opposing protrusion electrodes.

32. The plasma display panel of claim 31, wherein the discharge cells include discharge gas containing 10% or more Xenon.

33. The plasma display panel of claim 31, wherein the discharge cells include discharge gas containing 10-60% Xenon.

34. The plasma display panel of claim 24, wherein the discharge sustain electrodes include scan electrodes and display electrodes such that one scan electrode and one display electrode correspond to each row of the discharge cells, the scan electrodes and the display electrodes including protrusion electrodes extending into the discharge cells while opposing one another,

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

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

35. The plasma display panel of claim 24, wherein the discharge sustain electrodes include scan electrodes and display electrodes 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 of the address electrodes, protrusion electrodes extending 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,

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