Structures and methods for low temperature bonding using nanoparticles
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United States of America Patent
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Nov 14, 2017
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app pub date -
Mar 17, 2017
filing date -
Jul 10, 2015
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Abstract
A method of making an assembly can include forming a first conductive element at a first surface of a substrate of a first component, forming conductive nanoparticles at a surface of the conductive element by exposure to an electroless plating bath, juxtaposing the surface of the first conductive element with a corresponding surface of a second conductive element at a major surface of a substrate of a second component, and elevating a temperature at least at interfaces of the juxtaposed first and second conductive elements to a joining temperature at which the conductive nanoparticles cause metallurgical joints to form between the juxtaposed first and second conductive elements. The conductive nanoparticles can be disposed between the surfaces of the first and second conductive elements. The conductive nanoparticles can have long dimensions smaller than 100 nanometers.
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