Patent ID: RE41312

Claim:
A method for forming partitions of a plasma display panel, the partitions dividing a discharge space of a plasma display panel, the method comprising the steps of: providing a sheet-like partition material on a substrate that is a panel material, the partition material covering a display area and a non- display area outside thereof of the display area on a surface of the substrate; providing a mask for patterning on the partition material, the mask covering the display area and the outside thereof non- display area so that a pattern of the portion arranged in the display area of the mask corresponds to the partitions, and a pattern of the portion arranged in the non- display area outside of the display area of the mask is a pattern for dividing a band-like portion along a rim of the display area as a grid into a plurality of cells arranged in a plurality of rows and a plurality of columns ; patterning the partition material covered partially with the mask by a sandblasting process; and baking the partition material after the patterning; wherein a corner portion of the mask is arcuate .