29.3: Barrier Rib Molding Process using Capillary Action

Abstract

In this study, barrier ribs of plasma display panel were formed via capillary molding process. Various types of working molds were prepared by casting liquid polydimethylsiloxane on master molds that were produced from a photoresist film. A thermosetting paste was filled into the cavities of working molds by means of capillary action of paste and was cured prior to removing the molds. The effects of solid loading in the paste, prefiring temperature and type of barrier ribs on the sintering shrinkage were investigated. It was demonstrated that various types of barrier ribs could be produced successfully by sintering the ribs formed by the molding process.

Pore‐free mold‐pattern‐transfer method for barrier ribs of HD PDPs

“…Firstly, the paste-filling process could be conducted under a low-vacuum atmosphere to reduce air molecules in the trenches. 11 The vacuum atmosphere, however, promotes the evaporation of solvent and monomers within the paste vehicle and causes a significant change in the rheology of the paste. Secondly, the travel speed of the squeegee may be reduced such that the spreading speed of the paste by capillary action is larger than the squeegee speed.…”