Reliability of metal leads in high speed LSI semiconductors using dummy vias
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United States of America Patent
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Oct 7, 1997
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N/A
app pub date -
May 16, 1996
filing date -
Jul 15, 1994
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Abstract
A semiconductor device (and method of manufacturing thereof) having metal leads (114+130) with improved reliability, comprising metal leads (114+130) on a substrate 112, a low-dielectric constant material (116) at least between the metal leads (114+130), and dummy vias (122+134) in contact with the metal leads (114+130). Heat from the metal leads (114+130) is transferable to the dummy vias (122+134), and the dummy vias (122+134) are capable of conducting away the heat. The low-dielectric constant material (116) may have a dielectric constant of less than about 3.5. An advantage of the invention is to improve reliability of metal leads in circuits using low-dielectric constant materials, especially in scaled-down circuits that are compact in the horizontal direction.
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