Plasma display apparatus

• US 7,521,866 B2
• Filed: 03/19/2007
• Issued: 04/21/2009
• Est. Priority Date: 05/22/2006
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Yun Gi, Jung, Youn Jin
• Primary Examiner(s): Patel; Ashok
• Application Number:
  US11/723,342
• Publication Number:
  US 20080018248A1
• Time in Patent Office: 764 Days
• Field of Search: 313581-587
• 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 11/32 Disposition of the electrodes
• CPC Class Codes: H01J 2211/326 Disposition of electrodes with respect to cell parameters H01J2211/323 takes precedence, e.g. electrodes within the ribs
• CPC Class Codes: H01J 2211/363 Cross section 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 is provided that has an inter-electrode distance in a structure where a black layer and an electrode are separated from each other. The plasma display apparatus may have the effect that reactive current is reduced by lowering capacitance. Further, the plasma display panel may have the effect that emission of light by discharge is smoothly performed by controlling a width of an upper and lower portion of a second barrier rib and a width of the first barrier rib according to the width of the upper portion of the second barrier rib such that a luminance can be increased and interference of adjacent cells can be minimized. This may have an effect that a sustain period where an image is displayed can be secured relatively longer since an address time during which the scan pulse is applied is reduced.

Claims

1. A plasma display apparatus comprising:

a front substrate where a first electrode is formed in parallel with a second electrode;

a rear substrate where a third electrode is formed to intersect with the first electrode and the second electrode;

a first barrier rib and a second barrier rib that form a discharge cell by intersecting with each other between the front substrate and the rear substrate; and

a first black layer formed in a position corresponding to the second barrier rib on the front substrate,

wherein the second barrier rib is formed in parallel with the first electrode and the second electrode,

wherein each of the first electrode and the second electrode is separately disposed into a direction of a center of the discharge cell from an edge of an upper portion of the second barrier rib, and a longest distance between the first electrode and the second electrode ranges from 0.5 times to 1 times of a distance between edges of upper portions of the adjacent second barrier ribs, and

wherein the first black layer is separated from the first electrode and the second electrode.

2. The plasma display apparatus of claim 1, wherein the longest distance between the first electrode and the second electrode ranges from 0.5 times to 0.8 times of the distance between the edges of the upper portions of the adjacent second barrier ribs.

3. The plasma display apparatus of claim 1, wherein a height of the first barrier rib is greater than a height of the second barrier rib.

4. The plasma display apparatus of claim 1, wherein the first electrode and the second electrode include a transparent electrode and a bus electrode respectively, and a second black layer is formed between the transparent electrode and the bus electrode.

5. The plasma display apparatus of claim 4, wherein a width of the first black layer is greater than a width of the second black layer.

6. The plasma display apparatus of claim 1, wherein the first electrode and the second electrode are each comprised of a bus electrode.

7. The plasma display apparatus of claim 1, wherein a width of the third electrode is greater in inside of the discharge cell than in outside of the discharge cell.

8. The plasma display apparatus of claim 1, wherein a width of the third electrode formed inside of the discharge cell is different in the discharge cell radiating a different color.

9. The plasma display apparatus of claim 1, wherein at least one of the first electrode and the second electrode is formed in a position overlapped with a part except the edge of the upper portion of the second barrier rib.

10. A plasma display apparatus comprising:

a first electrode and a second electrode on a first substrate;

a third electrode on a second substrate that faces the first substrate;

a first barrier rib and a second barrier rib that form a discharge cell between the first substrate and the second substrate, the second barrier rib being substantially parallel to the first electrode and the second electrode; and

a first black layer on the first substrate at a position corresponding to the second barrier rib, the first black layer being separated from the first electrode and the second electrode,

wherein each of the first electrode and the second electrodes is separately disposed toward a center of the discharge cell from an edge of an upper portion of the second barrier rib, wherein a first distance is a distance between an outer edge of the first electrode of the discharge cell and an outer edge of the second electrode of the discharge cell, a second distance is a distance between edges of upper portions of adjacent second barrier ribs about the discharge cell, and wherein the first distance is 0.5 to 1.0 times the second distance.

11. The plasma display apparatus of claim 10, wherein the first distance is 0.5 times to 0.8 times the second distance.

12. The plasma display apparatus of claim 10, wherein the first electrode includes a transparent electrode and a bus electrode, and a second black layer is formed between the transparent electrode and the bus electrode.

13. The plasma display apparatus of claim 12, wherein a width of the first black layer is greater than a width of the second black layer.

14. The plasma display apparatus of claim 10, wherein the second electrode includes a transparent electrode and a bus electrode, and a second black layer is formed between the transparent electrode and the bus electrodes.

15. The plasma display apparatus of claim 14, wherein a width of the first black layer is greater than a width of the second black layer.

16. The plasma display apparatus of claim 10, wherein a width of the third electrode is greater inside the discharge cell than outside the discharge cell.

17. The plasma display apparatus of claim 10, wherein a width of the third electrode formed inside the discharge cell is different in a discharge cell radiating a different color.

18. The plasma display apparatus of claim 10, wherein at least one of the first electrode and the second electrode is formed in a position overlapped with a part except the edge of the upper portion of the second barrier rib.

19. The plasma display apparatus of claim 10, wherein a height of the first barrier rib is greater than a height of the second barrier rib.