Patent ID: 9072185
Filing Date: 2015-06-30
Classification: C09D,H01L,H05K

Abstract:
1. A circuit assembly comprising: a substrate having a maximum exposure temperature of less than 200° C.; and a first layer of formed metal adhered to the substrate by mechanical interlocking with irregular surface features of the substrate, the first layer of formed metal comprising at least partially fused nanoparticles that comprise copper and had a diameter of less than 50 nanometers prior to being fused; a layer of non-conducting material over a first portion of the first layer of formed metal, wherein a second portion of the first layer of formed metal is not covered by the layer of non-conducting material; a semiconductor layer over the layer of non-conducting material and the second portion of the first layer of formed metal; a conductor layer over the layer of non-conducting material and connected to the semiconductor layer; and a second layer of formed metal over the semiconductor layer, wherein a shape of the substrate after the nanoparticles are fused is not measurably changed from a shape of the substrate prior to the nanoparticles being fused.