Embedded multi-layer capacitor in a low-temperature co-fired ceramic (LTCC) substrate
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United States of America Patent
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Feb 24, 2004
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N/A
app pub date -
Feb 16, 2001
filing date -
Sep 15, 1999
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Abstract
An apparatus and method for creating multi-layer embedded ceramic capacitors in low-temperature co-fired ceramic (LTCC) substrates. In order to create multiple layers of electrodes, the individual electrode layers must be connected electrically. According to the present invention, a multi-layer capacitor is formed on a first ceramic tape layer. A second tape layer having an opening is placed on top of the first layer. The opening in the second layer is formed such that exposed vias are present on at least two sides of the opening to electrically connect to the electrodes. When the tape layers are pressed and fired, the exposed vias and electrodes form common electrical connections. A third layer having a terminal via may be placed on top of the second layer.
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