Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Dielectric Properties of LCP and $BaTiO_3-SrTiO_3$ Composites for Embedded Matching Capacitors

내장형 capacitor를 위한 LCP와 $BaTiO_3-SrTiO_3$ 복합재의 유전특성

  • Kim, Jin-Cheol (eMD Center, Central R & D Institute, Samsung Electro-Mechanics Co. LTD.) ;
  • Yoon, Sang-Jun (eMD Center, Central R & D Institute, Samsung Electro-Mechanics Co. LTD.) ;
  • Yoon, Keum-Hee (eMD Center, Central R & D Institute, Samsung Electro-Mechanics Co. LTD.) ;
  • Oh, Jun-Rok (eMD Center, Central R & D Institute, Samsung Electro-Mechanics Co. LTD.)
  • 김진철 (eMD center, 중앙연구소, 삼성전기) ;
  • 윤상준 (eMD center, 중앙연구소, 삼성전기) ;
  • 윤금희 (eMD center, 중앙연구소, 삼성전기) ;
  • 오준록 (eMD center, 중앙연구소, 삼성전기)
  • Published : 2008.06.19
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Abstract

We manufactured Liquid Crystal Polymer (LCP) and (1-x)$BaTiO_3-xSrTiO_3$(BST) ceramic composites and investigated dielectric properties to use as embedded capacitor in printed circuit boards and replace LTCC substrates. The dielectric properties of these composites are varied with volume fraction of BST and ratios of BT/ST. Dielectric constants are in the range of 3~28. In addition, we could get low TCC and High Q value that could not achieve in other ceramic-polymer composites. Especially, in composite with x=0.4 and 50vol% BST, the dieletric constant and Q-value are 27 and 300, respectively. And more TCC is -116~145ppm/$^{\circ}C$ in the temperature range of -55~$125^{\circ}C$. We think that this composites can be used high-Q substrate material like LTCC and embedded temperature compensation capacitor in printed circuit boards.

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