Patent ID: 7467983

Claim:
A method for manufacturing barrier ribs of a plasma display panel, comprising: providing a substrate; forming a rib material layer on the substrate; coating a photo resist of negative type on the rib material layer; utilizing a first photo mask to perform an exposure process and a development process for forming a patterned photo resist on the rib material layer, wherein the patterned photo resist comprises a plurality of first parallel lines and a plurality of second parallel lines intersecting and perpendicular to the first parallel lines, and a first thickness of the first parallel lines being thicker than a second thickness of the second parallel lines, and the first photo mask comprises a plurality of third parallel lines exposing the corresponding first parallel lines and a plurality of first specific regions exposing the corresponding second parallel lines; and forming a plurality of first parallel barrier ribs and a plurality of second parallel barrier ribs, a third thickness of the first parallel barrier ribs is thicker than a fourth thickness of the second parallel barrier ribs.