公开(公告)号：EP1892832A1

公开(公告)日：2008-02-27

申请号：EP06766675.0

申请日：2006-06-14

申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

发明人： ONISHI,Keiji c/o Matsushita El. Industrial Co., Ltd. ,  NAKATSUKA, Hiroshi, c/o Matsushita El. Industrial Co., Ltd. ,  ONISHI,Keiji c/o Matsushita El. Industrial Co., Ltd. ,  NAKAMURA, Hiroyuki, c/o Matsushita El. Industrial Co., Ltd.

IPC分类号： H03H9/56 ,  H01L41/09 ,  H03H9/17 ,  H03H9/70

CPC分类号： H03H9/0095 ,  H03H9/0004 ,  H03H9/0207 ,  H03H9/02157 ,  H03H9/564

摘要： In a balanced/unbalanced type coupled FBAR filter (100), an area size of a first lower electrode (102) is generally equal to a total area size of second and third lower electrodes (104, 106) and an area for isolating the second and third lower electrodes (104, 106). An area size of a first upper electrode (103) is generally equal to a total area size of second and third upper electrodes (105, 107) and an area for isolating the second and third upper electrodes (105, 107). The third lower electrode (106) and the second upper electrode (105) are located to face each other, and the third upper electrode (107) and the second lower electrode (104) are located to face each other. A part of the second lower electrode (104) and a part of the second upper electrode (105) are located to face each other.

摘要翻译： 在平衡/不平衡型耦合FBAR滤波器（100）中，第一下电极（102）的面积大小通常等于第二和第三下电极（104,106）的总面积尺寸，以及用于隔离第二 和第三下电极（104,106）。 第一上部电极（103）的面积大小通常等于第二和第三上部电极（105,107）的总面积尺寸以及用于隔离第二和第三上部电极（105,107）的区域。 第三下电极（106）和第二上电极（105）位于彼此面对，并且第三上电极（107）和第二下电极（104）彼此面对。 第二下部电极（104）的一部分和第二上部电极（105）的一部分位于彼此面对。