Plasma display panel and method for manufacturing the same

Abstract

A plasma display panel has a good productivity of partition formation and air exhaustion process and realizes a bright and stable display. A discharge gas is filled in a gap between two substrates. A mesh-patterned partition is arranged on the inner surface of one of the substrates for dividing the gap into plural squares corresponding to a cell arrangement. The partition has low portions forming a mesh-like air path that travels through all of the gas-filled space enclosed by the partition, in a plan view.A plasma display panel includes two spaced substrates defining a gap therebetween. The gap is divided by intersecting walls into columns and rows of discharge cells. Portions of a wall that are lower in height than remaining portions of the wall define a flow path. The plasma display panel realizes a bright and stable display.

1. A plasma display panel having a display surface, comprising:
 a pair of spaced substrates defining a gap therebetween;  
 a discharge gas filled in the gap between the substrates; and  
 a mesh-patterned partition, disposed between respective inner surfaces of the substrates and extending over all of the display surface, dividing the gap into a cell arrangement of plural gas-filled cells, each cell having a surrounding partition sidewall, portions of the respective surrounding sidewall of the plural gas-filled cells forming  are lowered to form mesh-like air paths extending through all of the plural gas-filled cells and to a periphery of the partition.  
 
     
     
       2. The plasma display panel according to  claim 1 , wherein portions of the partition sidewalls are lowered to form the mesh-like air paths,  a difference between respective heights of the lowered portions and the other portions upper surface of the partition sidewalls is more than 5% of a maximum height of the partition. 
     
     
       3. The plasma display panel according to  claim 1 , wherein spaced, opposed portions of the respective sidewalls of the plural cells, aligned in row and column directions, are of a reduced height, relative to other portions of the respective sidewalls of the plural cells, thereby forming corresponding air paths. 
     
     
       4. The plasma display panel according to  claim 1 , wherein a fluorescent material is arranged on a row direction side and a column direction side of the respective partition sidewall of each of the cells. 
     
     
       5. The plasma display panel according to  claim 1 , wherein the cells in the row direction and in the column direction form a matrix display and an inter-row portion of the partition, that forms a boundary wall between adjacent rows, is of a lower height than other portions of the partition. 
     
     
       6. The plasma display panel according to  claim 5 , wherein the inter-row portion defines at least one space for each column. 
     
     
       7. The plasma display panel according to  claim 6 , wherein the inter-row portion has a ladder pattern. 
     
     
       8. The plasma display panel according to  claim 5 , wherein the partition is arranged on a back substrate, an electrode including a transparent conductive film and a metal film extending over all columns is arranged on the front substrate, and the metal film and the inter-row portion are overlaid. 
     
     
       9. The plasma display panel according to  claim 1 , wherein the partition is formed of a baked material having a heat shrink property, and a width of the reduced height portions of the partition sidewalls is greater than a width of the other portions of the sidewalls of the partition. 
     
     
       10. A method for manufacturing a plasma display having a display screen accordingly  claim 1   having a pair of spaced substrates defining a gap therebetween, a discharge gas filled in the gap between the substrates, and a mesh- patterned partition, disposed between respective inner surfaces of the substrates and extending over all of the display surface, dividing the gap into a cell arrangement of plural gas - filled cells, each cell having a surrounding partition sidewall, portions of the respective surrounding sidewall of the plural gas - filled cells are lowered to form mesh - like air paths extending through all of the plural gas - filled cells and to a periphery of the partition , said method comprising:
 forming a layer of a material having a heat shrink property on a substrate;  
 patterning the layer to define the mesh-patterned partition extending over all of the display screen and defining a cell arrangement of plural cells, each cell having a partition sidewall, portions of the respective surrounding sidewalls of the plural cells forming mesh-like air paths extending through all of the plural cells and to a periphery of the mesh-patterned partition; and  
 forming the partition by baking the patterned layer.  
 
     
     
       11. The method according to  claim 10 , wherein the patterning further comprises placing a cutting mask corresponding to the cell arrangement on the layer, and cutting non-masked portions of the layer by sandblasting. 
     
     
       12. The plasma display panel according to  claim 3 , wherein portions of the partition sidewalls are lowered to form the mesh-like air paths, a difference between respective heights of the lowered portions and an upper surface of the partition sidewall being more than 10 μm. 
     
     
       13. The plasma display panel according to  claim 3 , wherein the air paths extend continuously over a complete length of each of the row and column directions. 
     
     
       14. A plasma display panel having a display surface, comprising:
 a pair of substrates having parallel, spaced and opposed respective inner surfaces defining a gap therebetween;  
 a discharge gas filled in the gap between the substrates; and  
 a mesh-patterned partition disposed between the respective inner surfaces of the substrates and dividing the gap into a cell arrangement of plural gas-filled cells in plural, transverse rows and columns covering the display surface and in which the partition defines a surrounding sidewall for each cell, spaced and opposed  at least portions of the respective sidewalls of the plural cells, aligned in both the row and column directions, defining  are lowered in height to define corresponding air paths in the row and column directions, that travel through all of the gas-filled cells to a periphery of the partition.  
 
     
     
       15. A plasma display panel, comprising:
   a pair of spaced substrates defining a gap therebetween;        a plurality of first walls dividing the gap into plural columns, each column comprising plural cells;        a plurality of second walls intersecting said first walls and dividing the gap into plural rows, each row comprising plural cells; and        at least portions of said first walls, in the intersections with said second walls, being of a lower height than a height of remaining portions of the first walls and defining flow paths extending through adjacent cells.      
     
     
       16. The plasma display panel recited in  claim 15 , wherein said flow path is defined by respective intersecting portions of the first and second walls, of lesser height than a height of remaining portions of the first wall.  
     
     
       17. The plasma display panel recited in  claim 15 , wherein at least one of said first and second walls has a zigzag pattern comprising a non- linear wall surrounding each associated cell.    
     
     
       18. A plasma display panel, comprising:
   a pair of spaced substrates defining a gap therebetween;        a plurality of first walls dividing the gap into plural columns, each column comprising plural cells;        a plurality of second walls intersecting said first walls and dividing the gap into plural rows, each row comprising plural cells; and        the second walls having a width greater than  130   %  of a width of the first walls, at least portions of the intersections of the first and second walls being of a lower height than a height of remaining portions of the first walls and defining flow paths extending through adjacent cells.      
     
     
       19. The plasma display panel recited in  claim 18 , wherein said flow path is defined by respective intersecting portions of the first and second walls, of lesser height than a height of remaining portions of the first wall.  
     
     
       20. The plasma display panel recited in  claim 18 , wherein at least one of said first and second walls has a zigzag pattern comprising a non- linear wall surrounding each associated cell.    
     
     
       21. A plasma display panel, comprising:
   a pair of spaced substrates defining a gap therebetween;        a discharge gas in the gap between the substrates;        a plurality of first walls dividing the gap into plural columns, each column comprising plural gas filled cells;        a plurality of second walls intersecting with said first walls and dividing the gap into plural rows, each row comprising plural gas filled cells; and        at least portions of said first walls, in the intersections with said second walls being of a lower height than a height of remaining portions of the first walls and defining flow paths extending through adjacent cells.      
     
     
       22. The plasma display panel recited in  claim 21 , wherein said flow path is defined by respective intersecting portions of the first and second walls, of lesser height than a height of remaining portions of the first wall.  
     
     
       23. The plasma display panel recited in claims  21 , wherein at least one of said first and second walls has a zigzag pattern comprising a non- linear wall surrounding each associated gas filled cell.    
     
     
       24. A plasma display panel, comprising:
   a pair of spaced substrates defining a gap therebetween;        a discharge gas filled in the gap between the substrates;        a plurality of first walls dividing the gap into plural columns, each column comprising of plural gas filled cells;        a plurality of second walls intersecting said first walls and dividing the gap into plural rows, each row comprising plural gas filled cells; and        the second walls having a width greater than  130   %  of a width of the first walls, at least portions of the intersections of the first and second walls being of a lower height than a height of remaining portions of the first walls and defining flow paths extending through adjacent gas filled cells.      
     
     
       25. The plasma display panel recited in  claim 24 , wherein said flow path is defined by respective intersecting portions of the first and second walls, of lesser height than a height of remaining portions of the first wall.  
     
     
       26. The plasma display panel recited in claims  24 , wherein at least one of said first and second walls has a zigzag pattern comprising a non- linear wall surrounding each associated gas filled cell.    
     
     
       27. A plasma display panel having a display surface, comprising:
   a pair of spaced substrates defining a gap therebetween;        a discharge gas filled in the gap between the substrates; and        a partition disposed between respective inner surfaces of the substrates and extending over all of the display surface, said partition comprising a plurality of first walls dividing the gap into rows of plural gas filled cells and a plurality of second walls intersecting with said first walls, dividing the gap into columns of plural gas filled cells,        wherein a portion of said first wall including at least a part of each intersection of said first and second walls is of a lower height than a portion of the second wall, thereby forming air paths extending through the adjacent gas filled cells and to a periphery of the partition.      
     
     
       28. A plasma display panel having a display surface, comprising:
   a pair of spaced substrates defining a gap therebetween;        a discharge gas filled in the gap between the substrates;        a partition comprising a plurality of vertical walls and a plurality of horizontal walls, disposed between respective inner surfaces of the substrates and extending over all of the display surface, dividing the gap into a matrix arrangement of plural rows and columns of plural gas filled cells, said horizontal wall having a width more than  130   %  larger than a width of the vertical wall;        air paths extending between adjacent gas filled cells, through upper surface will portions of at least respective intersections of the vertical and horizontal walls, and to a periphery of the partition.      
     
     
       29. The plasma display panel recited in  claim 28 , wherein said air paths are provided in a pattern through reduced height upper surface wall portions on the horizontal walls, in crossing parts of the respective vertical and horizontal walls.  
     
     
       30. The plasma display panel recited in  claim 28 , wherein at least one of said vertical and horizontal walls has a zigzag pattern, surrounding each gas filled cell with a non linear sidewall.  
     
     
       31. The plasma display panel recited in  claim 29 , wherein at least one of said vertical and horizontal walls has a zigzag pattern, surrounding each gas filled cell with a non linear sidewall.  
     
     
       32. The plasma display panel recited in  claim 28 , wherein each of said horizontal walls includes at least one space at a portion corresponding to every column of the matrix arrangement of plural gas filled cells.  
     
     
       33. A plasma display panel, comprising:
   a pair of front substrate and rear substrate having parallel, spaced and opposed respective inner surfaces defining a gas filled gap therebetween;        a plurality of display electrode pairs arranged on the inner surface of the front substrate in parallel relationship and extending in a horizontal direction;        a plurality of address electrodes arranged on the inner surface of the rear substrate in parallel relationship and extending in a vertical direction;        a mesh patterned partition disposed between the respective inner surfaces of the front and rear substrates and dividing the gas filled gap into a cell arrangement of plural discharge cells in plural, transverse rows and columns, said mesh patterned partition including a plurality of inter row portions, each thereof extending in a horizontal direction between respective, adjacent vertical walls defining corresponding rows of the discharge cell arrangement, each of said inter row portions comprises at least two horizontal walls, a width of each inter row portion being larger than a width of each vertical wall of said mesh patterned partition; and        an air paths extending between the adjacent discharge cells through corresponding portions above an upper surface of each of the horizontal walls of the inter row portions reduced in height by heat shrinking.      
     
     
       34. A plasma display panel recited in  claim 33 , wherein said air path is defined as a pattern of reduced height upper surface wall portions in respective crossing parts of the mesh patterned partition.  
     
     
       35. A plasma display panel recited in  claim 33 , wherein each said display electrode comprises a transparent conductive film and a metal film extending over all columns and arranged on the front substrate, the metal film and the inter row portion being overlaid.  
     
     
       36. A plasma display panel recited in  claim 34 , wherein each said display electrode comprises a transparent conductive film and a metal firm extending over all columns and is arranged on the front substrate, the metal film and the inter row portion being overlaid.  
     
     
       37. A method for manufacturing a plasma display panel having a display screen and a mesh patterned partition between a pair of opposed substrates, comprising:
   forming a layer of material having a heat shrink property on one substrate;        patterning the layer to define the mesh patterned partition extending over all of the display screen and defining a matrix arrangement of plural cells in plural, transverse row and column directions, each cell surrounded with partition sidewalls, each of opposing sidewalls in a column direction having a width larger than the opposing sidewalls in a row direction; and        baking the patterned layer, thereby forming the partition so as to have a reduced height portion in each respective part of said opposing sidewall, extending in a row direction, of a larger width.