Plasma display panel having protrusion electrode with indentation and aperture

• US 7,425,797 B2
• Filed: 07/02/2004
• Issued: 09/16/2008
• Est. Priority Date: 07/04/2003
• 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, Kang, Tae-Kyoung
• Primary Examiner(s): Williams; Joseph
• Assistant Examiner(s): Won; Bumsuk
• Application Number:
  US10/885,296
• Publication Number:
  US 20050029939A1
• Time in Patent Office: 1,537 Days
• Field of Search: 313582-587, 345/37, 345/41, 345/60, 345/71, 315/169.4
• US Class Current: 313/584
• 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 11/32 Disposition of the electrodes
• CPC Class Codes: H01J 2211/245 Shape, e.g. cross section or pattern
• CPC Class Codes: H01J 2211/323 Mutual disposition of electrodes
• 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 defining a plurality of discharge cells. Phosphor layers are formed within the discharge cells. Discharge sustain electrodes are formed on the first substrate. 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 extending from each of the bus electrodes such that a pair of opposing protrusion electrodes is formed within an area corresponding to each discharge cell. A distal end of each protrusion electrode includes an indentation such that a gap is formed between the pair of opposing protrusion electrodes, and an aperture is formed in each protrusion electrode.

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;

phosphor layers formed within the discharge cells; and

discharge sustain electrodes formed on the first substrate,

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 extending from and forming an angle different from right angle with each of the bus electrodes such that a pair of opposing protrusion electrodes, one member of the pair being a mirror image of the other, is formed within an area corresponding to each said discharge cell and

wherein a distal end of each of the protrusion electrodes opposite a proximal end connected to and extending from the bus electrode includes an indentation at a center area thereof such that a gap is formed between the pair of opposing protrusion electrodes, and an aperture is formed in each of the protrusion electrodes to thereby increase an aperture ratio of the protrusion electrodes.

2. The plasma display panel of claim 1, wherein each said indentation is reduced in width along a first direction substantially perpendicular to a second direction in which the address electrodes extend, as the proximal end is approached.

3. The plasma display panel of claim 2, wherein the indentations have substantially a shape of a trapezoid with its base removed.

4. The plasma display panel of claim 1, wherein the aperture is formed as a region that is not coated with conductive material used to form the protrusion electrodes.

5. The plasma display panel of claim 1, wherein the aperture decreases in width along a first direction substantially perpendicular to a second direction in which the address electrodes extend, as the proximal end is approached.

6. The plasma display panel of claim 5, wherein the aperture has substantially a shape of a trapezoid.

7. The plasma display panel of claim 1, wherein each said protrusion electrode decreases in width along a first direction substantially perpendicular to a second direction in which the address electrodes extend, as the proximal end is approached.

8. The plasma display panel of claim 7, wherein each said protrusion electrode has substantially a shape of a trapezoid.

9. The plasma display panel of claim 1, wherein the protrusion electrodes satisfy the following condition,

0.1≦

D2/D1≦

0.333

where Dl is an area of each said protrusion electrode, and D2 is an area of the aperture.

10. The plasma display panel of claim 1, wherein the bus electrodes are metal electrodes.

11. The plasma display panel of claim 1, wherein the protrusion electrodes are transparent electrodes.

12. The plasma display panel of claim 1, wherein the address electrodes are formed in a stripe pattern, and the discharge sustain electrodes are formed to extend in a first direction substantially perpendicular a second direction in which the address electrodes extend.

13. The plasma display panel of claim 12, wherein the barrier ribs are formed in a stripe pattern, each said barrier rib being disposed between a pair of the address electrodes.

14. The plasma display panel of claim 1, wherein the barrier ribs are formed in a matrix configuration such that discharge cells are defined as independent units.

15. 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;

phosphor layers formed within the 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 first adjacent discharge cells and discharge cell ordinates that pass through centers of second adjacent discharge cells, each of the non-discharge regions being defined by at least two of the barrier ribs adjacent to the non-discharge region,

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 transparent protrusion electrodes extending from and forming an angle different from right angle with each of the bus electrodes such that a pair of opposing protrusion electrodes, one member of the pair being a mirror image of the other, is formed within an area corresponding to each discharge cell, and

wherein a distal end of each of the protrusion electrodes opposite a proximal end connected to and extending from the bus electrode includes an indentation at a center area thereof to thereby form a first discharge gap and a second discharge gap of different sizes, and an aperture is formed in each of the protrusion electrodes to thereby increase an aperture ratio of the protrusion electrodes.

16. The plasma display panel of claim 15, wherein each of the discharge cells is formed such that ends of the discharge cells gradually decrease in width along a first direction in which the discharge sustain electrodes extend, as a distance from a center of the discharge cells increases along a second direction in which the address electrodes extend.

17. The plasma display panel of claim 16, wherein ends of each of the discharge cells have a planar configuration substantially in a shape of a trapezoid with its base removed.

18. The plasma display panel of claim 15, wherein the non-discharge regions are formed into independent cell structures by the barrier ribs.

19. The plasma display panel of claim 15, wherein the discharge cells are filled with discharge gas containing approximately 10% or more Xenon.

20. The plasma display panel of claim 15, wherein the discharge cells are filled with discharge gas containing approximately 10-60% Xenon.

21. The plasma display panel of claim 15, wherein the discharge sustain electrodes include scan electrodes and display electrodes provided such that one said scan electrode and one said display electrode correspond to each row of the discharge cells, the scan electrodes and the display electrodes including protrusion electrodes that extend into areas corresponding to the discharge cells while opposing one another,

wherein the address electrodes include line regions that extend along a first direction in which the address electrodes extend, and enlarged regions formed at predetermined locations and expanding along a second direction substantially perpendicular to the first direction to correspond to a shape of protrusion electrodes of the scan electrodes.

22. The plasma display panel of claim 21, wherein the enlarged regions of the address electrodes have a first width at areas opposing the distal ends of the protrusion electrodes, and have a second width that is smaller than the first width at areas opposing the proximal ends of the protrusion electrodes.

23. The plasma display panel of claim 15, wherein the discharge sustain electrodes include scan electrodes and display electrodes provided such that one said scan electrode and one said display electrode correspond to each row of the discharge cells,

wherein each of the scan electrodes and display electrodes includes one said bus electrode and a plurality of said protrusion electrodes,

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 display electrodes.

24. The plasma display panel of claim 23, wherein the protrusion electrodes of the display electrodes extend from the bus electrodes of the display electrodes into areas corresponding to discharge cells adjacent to opposite sides of the bus electrodes.

25. The plasma display panel of claim 23, 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.