Plasma display panel

Abstract

A plasma display panel is disclosed, which prevents luminance from being reduced, prevents error discharge from occurring due to crosstalk, and improves exhaust ability. Auxiliary barriers or projections are formed in a boundary portion between respective cells in a stripe type barrier structure. Alternatively, a predetermined groove is formed in a predetermined position of a dielectric layer in a lattice shaped barrier structure. In addition to these barriers, second barriers are formed at a greater width or at constant intervals. Thus, exhaust ability can be improved, and error discharge due to crosstalk can be prevented from occurring. Also, luminance in corner portions of the cell can be improved, and contrast can be improved even if a black matrix is not formed.

1. A plasma display panel comprising:
 a first substrate;  
 a plurality of first substrate electrode pairs formed on the first substrate at constant intervals in one direction;  
 a first dielectric layer formed on the first substrate including the first substrate electrode pairs;  
 a second substrate;  
 a plurality of second substrate electrodes formed on the second substrate at constant intervals to cross the first substrate electrode pairs;  
 a second dielectric layer formed on the second substrate including the second substrate electrodes;  
 first barriers formed on the second dielectric layer with the second substrate electrodes interposed therebetween;  
 auxiliary barriers formed at both sides of the first barriers;  
 a phosphor layer formed on the second dielectric layer including the first barriers; and  
 second barriers formed in a boundary portion of upper and lower discharge cells on the second substrate to have a width which increases toward the first barriers from a central portion and to be separated from the first barriers.  
 
     
     
       2. A plasma display panel of  claim 1 , wherein the auxiliary barriers have a greater lower area than an upper area at both sides of the first barriers. 
     
     
       3. A plasma display panel of  claim 2 , wherein the auxiliary barriers are formed at both sides of the first barriers in a round shape. 
     
     
       4. A plasma display panel of  claim 1 , wherein the auxiliary barriers are layered on a lower portion of both sides of the first barriers at a predetermined height and width. 
     
     
       5. A plasma display panel of  claim 1 , wherein the second barriers have a greater width toward a lower portion. 
     
     
       6. A plasma display panel of  claim 1 , wherein the second barriers have a round shape at a surface opposite to the first substrate electrode pairs. 
     
     
       7. A plasma display panel of  claim 1 , wherein the second barriers are separated at their central portion by X axis, Y axis, or X and Y axes. 
     
     
       8. A plasma display panel comprising:
 a first substrate;  
 a plurality of first substrate electrode pairs formed on the first substrate at constant intervals in one direction;  
 a second substrate;  
 a plurality of second substrate electrodes formed on the second substrate at constant intervals to cross the first substrate electrode pairs;  
 first barriers formed on the second substrate with the second substrate electrodes interposed therebetween; and  
 at least two or more second barriers formed in a boundary portion of upper and lower discharge cells on the second substrate to be separated from the first barriers and to maintain predetermined intervals among one another.  
 
     
     
       9. A plasma display panel of  claim 8 , wherein the second barriers are formed in the same direction as the first substrate electrode pairs. 
     
     
       10. A plasma display panel of  claim 8 , wherein the second barriers are formed in the same direction as the first barriers. 
     
     
       11. A plasma display panel of  claim 8 , wherein the second barriers have either a horizontal width or a vertical width equivalent to the first barriers. 
     
     
       12. A plasma display panel comprising:
 a first substrate;  
 a plurality of first substrate electrode pairs formed on the first substrate at constant intervals in one direction;  
 a second substrate;  
 a plurality of second substrate electrodes formed on the second substrate at constant intervals to cross the first substrate electrode pairs;  
 first barriers formed on the second substrate with the second substrate electrodes interposed therebetween; and  
 second barriers formed in a boundary portion of upper and lower discharge cells on the second substrate to be separated from the first barriers and to have a width of a surface opposite to the first barriers, which increases at a constant ratio or more than a width of the first barriers.  
 
     
     
       13. A plasma display panel of  claim 12 , wherein the second barriers have concave and convex portions on a surface opposite to the first barriers. 
     
     
       14. A plasma display panel ( PDP ),  comprising:      a substrate;        at least one electrode arranged on the substrate;        at least one first barrier formed on the substrate parallel to the at least one electrode;        at least one second barrier formed on the substrate perpendicular to the at least one electrode;        a phosphor layer formed over the at least one electrode, wherein at least one side of the first barrier, and at least one side of the second barrier are configured to perform light emission, wherein a thickness of a top portion of the first barrier is less than a thickness of a bottom portion of the first barrier, and wherein a thickness of at least one of longitudinal end portions of the second barrier adjacent to the at least one first barrier is greater than a thickness of a middle portion of the second barrier.     
     
     
       15. The plasma display panel of  claim 14 , wherein at least one portion of the side of the first barrier is sloped such that an effective light- emitting surface area of the phosphor layer that receives ultraviolet rays is increased.   
     
     
       16. The plasma display panel of  claim 15 , wherein at least one of top and bottom portions of the side of the first barrier is sloped. 
     
     
       17. The plasma display panel of  claim 15 , wherein an entire portion of the side of the first barrier is sloped. 
     
     
       18. The plasma display panel of  claim 14 , wherein at least one portion of the side of the first barrier is faced toward ultraviolet rays such that an effective light- emitting surface area of the phosphor layer that receives the ultraviolet rays is increased.   
     
     
       19. The plasma display panel of  claim 18 , wherein at least one of top and bottom portions of the side of the first barrier is faced toward the ultraviolet rays. 
     
     
       20. The plasma display panel of  claim 18 , wherein an entire portion of the side of the first barrier is faced toward the ultraviolet rays. 
     
     
       21. A plasma display panel ( PDP ) , comprising:      a substrate;        at least one electrode arranged on the substrate;        at least one first barrier formed on the substrate;        at least one second barrier formed on the substrate; and        a phosphor layer formed over the at least one electrode, wherein at least one side of the first barrier, and at least one side of the second barrier are configured to perform light emission, wherein a thickness of a top portion of the first barrier is less than a thickness of a bottom portion of the first barrier, and wherein a thickness of at least one of longitudinal end portions of the second barrier adjacent to the at least one first barrier is greater than a thickness of a middle portion of the second barrier.     
     
     
       22. The plasma display panel of  claim 21 , wherein at least one portion of the side of the first barrier is sloped such that an effective light- emitting surface area of the phosphor layer that receives ultraviolet rays is increased.   
     
     
       23. The plasma display panel of  claim 22 , wherein at least one of top and bottom portions of the side of the first barrier is sloped. 
     
     
       24. The plasma display panel of  claim 22 , wherein an entire portion of the side of the first barrier is sloped. 
     
     
       25. The plasma display panel of  claim 21 , wherein at least one portion of the side of the first barrier is faced toward ultraviolet rays such that an effective light- emitting surface area of the phosphor layer that receives the ultraviolet rays is increased.   
     
     
       26. The plasma display panel of  claim 25 , wherein at least one of top and bottom portions of the side of the first barrier is faced toward the ultraviolet rays. 
     
     
       27. The plasma display panel of  claim 25 , wherein an entire portion of the side of the first barrier is faced toward the ultraviolet rays. 
     
     
       28. The plasma display panel of  claim 21 , wherein the at least one first barrier is substantially parallel to the at least one electrode. 
     
     
       29. The plasma display panel of  claim 21 , wherein the at least one second barrier is substantially perpendicular to the at least one electrode. 
     
     
       30. The plasma display panel of  claim 21 , wherein the at least one first barrier is substantially perpendicular to the at least one second barrier. 
     
     
       31. A plasma display panel ( PDP ) , comprising:      a substrate;        at least one electrode arranged on the substrate;        at least one first barrier formed on the substrate substantially perpendicular to the at least one electrode;        at least one second barrier formed on the substrate substantially parallel to the at least one electrode; and        a phosphor layer formed over the at least one electrode, wherein at least one side of the first barrier, and at least one side of the second barrier are configured to perform light emission, wherein a thickness of a top portion of the first barrier is less than a thickness of a bottom portion of the first barrier, and wherein a thickness of at least one of longitudinal end portions of the second barrier adjacent to the at least one first barrier is greater than a thickness of a middle portion of the second barrier.     
     
     
       32. The plasma display panel of  claim 31 , wherein at least one portion of the side of the first barrier is sloped such that an effective light- emitting surface area of the phosphor layer that receives ultraviolet rays is increased.   
     
     
       33. The plasma display panel of  claim 32 , wherein at least one of top and bottom portions of the side of the first barrier is sloped. 
     
     
       34. The plasma display panel of  claim 32 , wherein an entire portion of the side of the first barrier is sloped. 
     
     
       35. The plasma display panel of  claim 31 , wherein at least one portion of the side of the first barrier is faced toward ultraviolet rays such that an effective light- emitting surface area of the phosphor layer that receives the ultraviolet rays is increased.   
     
     
       36. The plasma display panel of  claim 35 , wherein at least one of top and bottom portions of the side of the first barrier is faced toward the ultraviolet rays. 
     
     
       37. The plasma display panel of  claim 35 , wherein an entire portion of the side of the first barrier is faced toward the ultraviolet rays. 
     
     
       38. An AC- type plasma display panel  ( PDP ) , comprising:      a first substrate;        at least one pair of scan and sustain electrodes arranged on the first substrate;        a first dielectric layer formed over the at least one pair of scan and sustain electrodes;        a second substrate;        at least one address electrode arranged on the second substrate substantially perpendicular to the at least one pair of scan and sustain electrodes;        a second dielectric layer formed over the at least one address electrode;        at least one first barrier formed on the second substrate;        at least one second barrier formed on the second substrate; and        a phosphor layer formed over an exposed portion of the second dielectric layer, at least one side of the first barrier, and at least one side of the second barrier in order to perform light emission, wherein a thickness of a top portion of the first barrier is less than a thickness of a bottom portion of the first barrier, and wherein a thickness of at least one of left and right end portions of the second barrier adjacent to the at least one first barrier is greater than a thickness of a middle portion of the second barrier.     
     
     
       39. The AC- type plasma display panel of    claim 38   , wherein at least one portion of the side of the first barrier is sloped such that an effective light - emitting surface area of the phosphor layer that receives ultraviolet rays is increased.   
     
     
       40. The AC- type plasma display panel of    claim 39   , wherein at least one of top and bottom portions of the side of the first barrier is sloped.   
     
     
       41. The AC- type plasma display panel of    claim 39   , wherein an entire portion of the side of the first barrier is sloped.   
     
     
       42. The AC- type plasma display panel of    claim 38   , wherein at least one portion of the side of the first barrier is faced toward ultraviolet rays such that an effective light - emitting surface area of the phosphor layer that receives the ultraviolet rays is increased.   
     
     
       43. The AC- type plasma display panel of    claim 42   , wherein at least one of top and bottom portions of the side of the first barrier is faced toward the ultraviolet rays.   
     
     
       44. The AC- type plasma display panel of    claim 42   , wherein an entire portion of the side of the first barrier is faced toward the ultraviolet rays.   
     
     
       45. The AC- type plasma display panel of    claim 38   , wherein the at least one first barrier is substantially parallel to the at least one address electrode.   
     
     
       46. The AC- type plasma display panel of    claim 38   , wherein the at least one second barrier is substantially perpendicular to the at least one address electrode.   
     
     
       47. The AC- type plasma display panel of    claim 38   , wherein the at least one first barrier is substantially perpendicular to the at least one second barrier.