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A new type of Bi based glass frit was developed for Ag paste in PDP applications and its properties are compared with the commercially used Pb based glass frit. After optimization of the properties of Bi based frits for PDP application such as the softening temperature and the coefficient of thermal...

A new type of Bi based glass frit was developed for Ag paste in PDP applications and its properties are compared with the commercially used Pb based glass frit. After optimization of the properties of Bi based frits for PDP application such as the softening temperature and the coefficient of thermal expansion (C.T.E), the screen printed electrodes prepared with the Bi based fit contained Ag paste were characterized. In $Bi_2O_3-B_2O_3-Al_2O_3$ glass system with the more than 50% of $Bi_2O_3$, the softening temperature, the thermal expansion coefficient and the line resistivity was 400∼$480^{\circ}C$, 7.31∼$10.02\times 10^{-6}/^{\circ}C$> and 4.1∼4.8$\Omega$ respectively. Properties of the Bi based frits are comparable with the Pb based frits. A printability and an uniformity of the Bi based frits were excellent in screen printed Ag eletrode. The Bi based frit system is an excellent candidate material for Pb free and Alkali free frit in PDP applications.

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