Patent ID: 9674938
Date: 2017-06-06
CPC Classifications: H01L,H05K

Claim:
1. An article for supporting a light emitting semiconductor device, the article comprising: a flexible polymeric dielectric layer having first and second major surfaces, the dielectric layer having an array of vias extending from the first major surface to the second major surface, the first major surface having a first conductive layer thereon and the second major surface having a second conductive layer thereon, the vias being defined by walls comprising the dielectric material and the second conductive layer covering the via opening in the second major surface, at least one via having a third conductive layer on at least a portion of the walls of the via and on at least a portion of the second conductive layer covering the via opening in the second major surface; the third conductive layer configured to directly or indirectly support the light emitting semiconductor device, wherein the first conductive layer is electrically conductive and the second and third conductive layers are thermally conductive, and wherein the third conductive layer provides no direct electrical connection between the first and the second conductive layers, wherein the flexible polymeric dielectric layer has a thickness of 50 micrometers or less, wherein the at least one via is at least 25% filled with conductive material in addition to the third conductive layer, and the article further comprising a reflective coating or solder covering the conductive material.