Method for fabricating semiconductor device
First Claim
1. A method of fabricating a semiconductor device so as to reduce coupling noise between metal leads, the method comprising the steps of:
- i) forming a first metal lead having a first side portion and a first top portion on a semiconductor substrate; and
forming a second metal lead having a second side portion and a second top portion on a semiconductor substrate, wherein the first and second side portions of the metal leads are spaced from each other by a predetermined distance;
ii) forming a first insulating interlayer on the entire surface of the semiconductor substrate so as to cover the first and second metal leads with the first insulating interlayer; and
iii) ion-implanting conductive impurities in portions of the first insulating interlayer contacting each of the first side portion and the second side portion, wherein the polarity of the implanted impurity in the portion of the first insulating interlayer contacting the first side portion is opposite the polarity of the implanted impurity in the portion of the first insulating interlayer contacting the second side portion so as to reduce the internal charges in the first insulating interlayer that are electrified due to external electric field applied by the first and second metal leads.
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Accused Products
Abstract
A method for fabricating a semiconductor device for reducing coupling noise resulting from high integration of devices, comprises the steps of forming a plurality of metal wiring leads spaced from each other by a predetermined distance and arranged on a semiconductor substrate having a predetermined under layer; forming an insulating interlayer on an entire surface of the semiconductor substrate so that the metal wiring leads are covered with the insulating interlayer; and ion-implanting conductive impurities having a plurality opposite to each other into side end layers of the insulating interlayer disposed between the metal wiring leads so as to reduce the internal charges electrified due to an applied external electric field.
3 Citations
8 Claims
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1. A method of fabricating a semiconductor device so as to reduce coupling noise between metal leads, the method comprising the steps of:
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i) forming a first metal lead having a first side portion and a first top portion on a semiconductor substrate; and
forming a second metal lead having a second side portion and a second top portion on a semiconductor substrate, wherein the first and second side portions of the metal leads are spaced from each other by a predetermined distance;ii) forming a first insulating interlayer on the entire surface of the semiconductor substrate so as to cover the first and second metal leads with the first insulating interlayer; and iii) ion-implanting conductive impurities in portions of the first insulating interlayer contacting each of the first side portion and the second side portion, wherein the polarity of the implanted impurity in the portion of the first insulating interlayer contacting the first side portion is opposite the polarity of the implanted impurity in the portion of the first insulating interlayer contacting the second side portion so as to reduce the internal charges in the first insulating interlayer that are electrified due to external electric field applied by the first and second metal leads. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification