Analysis On The Relation Between Fluid Properties And Design Parameters Of Coating Head For PDP Fabrication

Flat panel display has become the mainstream of the display filed. As an important member of flat panel display, plasma display attracts great attention. Localization of the plasma industry is the key to promote the international competitiveness of plasma products. Precision Application Coater is one of the primary equipments to produce Plasma Display Panel (PDP). It can be used to form dielectric layer, barrier rib, and protective layer for front and rear plasma display substrates.Extrusion coating, a common premetered method used for precision coating, is ideal for applying a uniform, adherent, and defect-free film of desired thickness onto the surface of wide substrate. This thesis presents a kind of coater using the method of extrusion coating for PDP fabrication. The paper provides an overall structure design. Based on the calculation of flow resistance in circular tubes, the flow characteristic of rectangular micro-channel and the precision in coating, a detailed design of the syringe pump coating system is presented in the paper. Analysis of stability of coating flows from the opening of the die head is also included in this article. As well, possible mechanisms of air entrainment are presented.