Method for forming partitions of plasma display panel by using sandblasting process

A method for forming partitions that divide a discharge space in each of plural plasma display panels simultaneously, the method comprising the steps of:

• providing a sheet-like partition material on a substrate that is a panel material on which display areas corresponding to the plural plasma display panels respectively are arranged linearly, the partition material covering the plural display areas and outside thereof on a surface of the substrate;
• providing a mask for patterning on the partition material, the mask covering the inside and the outside of the display area for each 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 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;
• forming an auxiliary mask at least between neighboring masks with a distance from the mask at the same time when forming the mask;
• patterning the partition material covered partially with the mask and the auxiliary mask by a sandblasting process;
• and
• baking the partition material after the patterning.