| Pb 금속필러가 첨가된 PbO-Bi2O3-B2O3-ZnO-SiO2계 유리의 특성 |
| 최진삼, 정대용1, 신동우, 배원태 |
경상대학교 세라믹공학전공
1인하대학교 신소재공학부 |
| Characteristics of the PbO-Bi2O3-B2O3-ZnO-SiO2 Glass System Doped with Pb Metal Filler |
| Jinsam Choi, DaeYong Jeong1, Dong Woo Shin, Won Tae Bae |
Department of Ceramic Engineering, Gyeongsang National University
1School of Materials Engineering, Inha University |
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| ABSTRACT |
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We investigated the effect of Pb-metal filler added to a hybrid paste(PbO-$Bi_2O_3-B_2O_3$-ZnO glass frit and Pb-powder), for joining flip-chip sat lower temperatures than normal. The glass transition temperature was detected at $250^{circ}C$ and the softening point occurred at $330^{circ}C$. As the temperature increased, the specific density decreased due to the volatility of the Pb-metal and boron component in the glass. When the glass was heat-treated at $350^{circ}C$ for 5 min, XRD results revealed a crystalline $Pb_4Bi_3B_7O_{19}$ phase that had been initiated by the addition of Pb-filler in the hybrid paste. The addition of the Pb-metal filler caused are action between the Pb-metal and glass that accelerated the formation of the liquid phase. The liquid phase that formed, promoted bonding between the flip-chip substrate sat lower temperature. |
| Key words:
Lead glass, Pb filler, Hybrid paste, Flip chip, Bonding |
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