Plasma display panel comprising common barrier rib between non-discharge areas

• US 7,683,545 B2
• Filed: 11/29/2004
• Issued: 03/23/2010
• Est. Priority Date: 11/29/2003
• Status: Expired due to Fees

• Current Assignee: Samsung SDI Company Limited
• Original Assignee: Samsung SDI Company Limited
• Inventors: Kwon, Hye-Kyong, Heo, Eun-Gi, Kwon, Jae-Ik, Kang, Tae-Kyoung
• Primary Examiner(s): Roy; Sikha
• Assistant Examiner(s): DIAZ, JOSE
• Application Number:
  US10/999,231
• Publication Number:
  US 20050134176A1
• Time in Patent Office: 1,940 Days
• Field of Search: 313582-587, 315/169.1, 315/169.4, 345/37, 345/41, 345/60, 345/71
• US Class Current: 313/583
• 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

Abstract

A plasma display panel includes a first substrate, on which discharge sustain electrodes are formed, and an opposing second substrate, on which address electrodes are aligned in a first direction. Barrier ribs between the substrates define a plurality of discharge cells within which phosphor layers are formed. The display electrodes have bus electrodes, forming a corresponding pair within each of the discharge cells, and extension electrodes, extending from the bus electrodes into each of the discharge cells to form an opposing pair. A pair of the display electrodes corresponding to each of the discharge cells forms a first gap and a second gap having different distances from each other between the opposing extension electrodes, and forms a third gap between the bus electrodes. The second gap is longer than the first gap, and the third gap is longer than the second gap.

Claims

1. A plasma display panel comprising:

a first substrate and a second substrate opposing each other;

address electrodes extending in a first direction on the second substrate;

barrier ribs arranged in the space between the first substrate and the second substrate to define a plurality of discharge cells;

phosphor layers in the discharge cells (27R, 27G, 27B); and

display electrodes on the first substrate, the display electrodes having bus electrodes extending in a second direction crossing the first direction to form a corresponding pair of the display electrodes corresponding to each of the discharge cells (27R, 27G, 27B), and extension electrodes individually extending from the bus electrodes to each of the discharge cells (27R, 27G, 27B) to form an opposing pair of the extension electrodes,

wherein a pair of the display electrodes corresponding to each of the discharge cells (27R, 27G, 27B) forms a first gap and a second gap having different distances from each other between the extension electrodes opposing each other, and forms a third gap between the bus electrodes,

wherein the second gap is longer than the first gap, and the third gap is longer than the second gap,

wherein the barrier ribs further define a plurality of non-discharge regions,

wherein at least two of the discharge cells (27R, 27G, 27B) adjacent to one another in the first direction has a common non-discharge region of the plurality of non-discharge regions with another at least two of the discharge cells (27R, 27G, 27B) adjacent to one another in the second direction, and

wherein at least two adjacent non-discharge regions of the plurality of non-discharge regions share a common barrier rib of the barrier ribs, the at least two adjacent non-discharge regions being adjacent along the second direction, the common barrier rib extending in the first direction.

2. The plasma display panel of claim 1, wherein the first gap is formed to be in the range of 50 to 80 μ

m.

3. The plasma display panel of claim 1, wherein the second gap is formed between the centers of the opposite end portions of the extension electrodes.

4. The plasma display panel of claim 1, wherein the second gap is formed to be in the range of 75 to 120 μ

m.

5. The plasma display panel of claim 1, wherein each of the extension electrodes has a width in the second direction of the bus electrode that gradually narrows as it is further from the center of the discharge cells (27R, 27G, 27B).

6. The plasma display panel of claim 1, wherein the third gap is formed to be in the range of 500 to 800 μ

m.

7. The plasma display panel of claim 1, wherein the first gap, the second gap, and the third gap are formed to have a ratio of first gap:

second gap;

third gap=1;

1.5;

10.

8. The plasma display panel of claim 1, wherein the first gap is formed such that the discharge gas pressure p times the distance d between the electrodes is in the range of 2 to 4.8 Torr·

cm.

9. The plasma display panel of claim 1, wherein the second gap is formed such that the discharge gas pressure p times the distance d between the electrodes is in the range of 2.8 to 7.2 Torr·

cm.

10. The plasma display panel of claim 1, wherein the third gap is formed such that the discharge gas pressure p times the distance d between the electrodes is in the range of 20 to 48 Torr·

cm,

11. The plasma display panel of claim 1, wherein each of the extension electrodes is formed with a transparent electrode.

12. The plasma display panel of claim 1, wherein each of the non-discharge regions is defined by the barrier ribs in an area encompassed by a pair of adjacent discharge cell abscissas that pass through centers of adjacent discharge cells (27R, 27G, 27B) in the second direction and a pair of adjacent discharge cell ordinates that pass through centers of adjacent discharge cells (27R, 27G, 27B) in the first direction that intersects the second direction.

13. The plasma display panel of claim 12, wherein the non-discharge region is formed to have independent cell structures defined by the barrier ribs.

14. The plasma display panel of claim 12, wherein each of the discharge cells (27R, 27G, 27B) has a width in the second direction of the bus electrode that gradually narrows away from the center of the discharge cells (27R, 27G, 27B).

15. The plasma display panel of claim 12, wherein the first gap is formed to be in the range of 50 to 80 μ

m.

16. The plasma display panel of claim 12, wherein the second gap is formed between the centers of opposite end portions of the extension electrodes.

17. The plasma display panel of claim 12 or claim 16, wherein the second gap is formed to be in the range of 75 to 120 μ

m.

18. The plasma display panel of claim 12, wherein each of the extension electrodes has a width in the direction of the bus electrode that narrows further from the center of the discharge cells (27R, 27G, 27B).

19. The plasma display panel of claim 12, wherein the third gap is formed to be in the range of 500 to 800 μ

m.

20. The plasma display panel of claim 12, wherein the first gap, the second gap, and the third gap are formed to have a ratio of first gap:

second gap;

third gap=1;

1.5;

10.

21. A plasma display panel comprising:

a first substrate and a second substrate opposing each other;

address electrodes extending in a first direction on the second substrate;

barrier ribs arranged in the space between the first substrate and the second substrate to define a plurality of discharge cells (27R, 27G, 27B);

phosphor layers in the discharge cells (27R, 27G, 27B); and

display electrodes on the first substrate, the display electrodes having bus electrodes extending in a second direction crossing the first direction to form a corresponding pair of the display electrodes corresponding to each of the discharge cells (27R, 27G, 27B), and transparent extension electrodes individually extending from the bus electrodes to each of the discharge cells (27R, 27G, 27B) to form an opposing pair of the transparent extension electrodes,

wherein a pair of the display electrodes corresponding to each of the discharge cells (27R, 27G, 27B) forms a first gap and a second gap having different distances from each other between the transparent extension electrodes opposing each other, and forms a third gap between the bus electrodes,

wherein the second gap is longer than the first gap, and the third gap is longer than the second gap,

wherein the barrier fibs further define a plurality of non-discharge regions,

wherein at least two of the discharge cells (27R, 27G, 27B) adjacent to one another in the first direction has a common non-discharge region of the plurality of non-discharge regions with another at least two of the discharge cells (27R, 27G, 27B) adjacent to one another in the second direction, and

wherein at least two adjacent non-discharge regions of the plurality of non-discharge regions share a common baffler rib of the baffler ribs, the at least two adjacent non-discharge regions being adjacent along the second direction, the common baffler rib extending in the first direction.