Papers by Keyword: Barrier Rib

Abstract: The present study is mainly focused on the evaluation of interface reaction between ceramic fillers and phosphate glass matrix for barrier ribs in PDP. The samples were prepared by dry milling for frits with a mean particle size(d50) of 1-2㎛. The frit was mixed with ceramic fillers (Al2O3, ZnO) and was fired at 550°C for 30 minutes. Interface reaction was observed by measuring the weight change of fired samples as a function of immersion time in 90°C de-ionized water and in 60°C acid solution. Fired samples were characterized by differential thermal analyzer, scanning electron microscopy, X-ray diffraction and ion dissolution was analyzed by inductive coupled plasma measurement. The results suggest that properties of barrier rib depend on the crystallization behavior and interface reaction between the fillers and the glass matrix.

Abstract: In an attempt to reduce processing cost and to improve the resolution of PDPs, a micro mold transfer processing route for barrier ribs of plasma display panel was attempted. In this study, the parameters that may cause defects during the process were identified, which include the shrinkage during the UV curing process, stress due to the evaporation of organic components, and sintering shrinkage. Considering such parameters, a UV curable paste was developed and the barrier ribs of PDPs were successfully processed via the process. This work demonstrated the possibility of a build-up route in manufacturing barrier ribs of PDP

Abstract: Barrier ribs of plasma display panel (PDP) were prepared via injection molding of thermally curable paste. The paste composition was optimized by considering the effects of powder content, binder type and content on the viscosity of paste. Various types of molds including stripe, honeycomb, and meander were prepared using UV lithography. In this study, main causes ofdimensional change during sintering of meander type barrier ribs produced by injection molding process were investigated by changing powder content in the paste. The results indicated that sintering stress generated in the barrier rib is not balanced at the points where the ribs are curved, causing dimensional change in the ribs.

Abstract: Various closed-cells of plasma display panel were prepared via capillary moldingof paste containing ceramic powders of barrier ribs. The cells include meander, honeycomb, waffle and SDR. In this study, the sintering behaviors of such barrier ribs were investigated. The effects of pre-firing temperature, solid content in the paste, and type of cells on morphologies of the ribs were examined. The results indicated that cells with asymmetric geometry such as SDR and meander results in severe distortion after the sintering. The cells with symmetric geometry such as waffle and honeycomb, on the other hand, the distortion was negligible. Using the waffle type cells, the luminance characteristics of PDP device were evaluated.