Patent ID: 6428945
Filing Date: 2002-08-06
Classification: H01J

Abstract:
A method of forming a barrier rib of a plasma display panel (PDP), comprising steps of:(a) providing a substrate having a plurality of electrodes formed on the substrate, a dielectric layer covered the electrodes and the surface of the substrate, and a rib material layer on the dielectric layer; (b) forming a first bottom pattern layer, a second bottom pattern layer, and a third bottom pattern layer above the rib material layer, each bottom pattern layer having the same width and being spaced apart to each other with the same distance; (c) forming a first, a second and a third middle pattern layer respectively above the first, the second, and the third bottom pattern layers; the left sidewall of the first middle pattern layer being aligned to the left sidewall of the first bottom pattern layer for exposing the right part of the first bottom pattern layer; the right sidewall of the second middle pattern layer being aligned to the right sidewall of the second bottom pattern layer for exposing the left part of the second bottom pattern layer; and the two sidewalls of the third middle pattern layer being aligned to the two sidewalls of the third bottom pattern layer; (d) forming a first and a second top pattern layer above the first and the third middle pattern layers respectively; the left sidewall of the first top pattern layer being aligned to the left sidewall of the first middle pattern layer for exposing the right part of the first middle pattern layer; the right sidewall of the second top pattern layer being aligned to the right sidewall of the third middle pattern layer for exposing the left part of the third middle pattern layer; (e) using the bottom, middle, and top pattern layers as a mask, performing a sandblasting process to remove parts of the rib material layer uncovered by the bottom pattern layers, the middle pattern layers and the top pattern layers for exposing parts of the dielectric layer; and (f) removing the bottom pattern layers, the middle pattern layers, and the top pattern layers for forming the barrier rib.