EMI and noise shielding for multi-metal layer high frequency integrated circuit processes
First Claim
Patent Images
1. A method comprising:
- forming a trench around an electrical component;
filling said trench with a conductive material; and
forming an interconnection layer coupled to said conductive material.
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Abstract
A circuit element that may generate or be affected by noise or electromagnetic interference may be substantially surrounded by one or more encircling plugs. The encircling plug may be closed by an interconnection layer. The plug may be grounded to reduce the electromagnetic interference or noise generated by or coupled to said passive circuit element.
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Citations
30 Claims
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1. A method comprising:
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forming a trench around an electrical component;
filling said trench with a conductive material; and
forming an interconnection layer coupled to said conductive material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21)
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13. An integrated circuit comprising:
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a semiconductor substrate;
an interconnection layer positioned over said substrate;
a passive circuit element between said substrate and said interconnection layer; and
a trench that encircles said passive circuit element, said trench filled with a conductive material.
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22. A method comprising:
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forming an integrated passive circuit element; and
substantially enclosing said element using a trench filled with a conductive material. - View Dependent Claims (23, 25, 26, 27, 28, 29, 30)
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24. An integrated circuit comprising:
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a semiconductor substrate;
an active circuit element formed in said substrate;
a guard ring encircling said active circuit element formed in said substrate; and
a trench filled with a conductive material coupled to said guard ring.
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Specification