Patent ID: 9629283
Date: 2017-04-18
CPC Classifications: C08J,C09K,H01L,H05K

Claim:
1. A compressible thermally conductive sheet having a first and second heat transfer surface and a plurality of through holes connecting the first and second heat transfer surfaces to provide a thermal pathway there between, wherein the sheet comprises a polymeric foam pad having through holes that are filled with a non-foamed thermally conductive composition comprising thermally conductive particulate filler dispersed in a polymeric, matrix, wherein the particulate filler consists of a material selected from the group consisting of metal oxides, non-metal oxides, nitrides, carbides, borides and combinations thereof, wherein the filler has a thermal conductivity of about 0.5 W/m-K to about 1000 W/m-K; wherein the compressible thermally conductive sheet has a thermal conductivity of at least 0.5 W/m-K; wherein the density of the through holes is 100,000 holes per square meter to 2 million holes per square meter; wherein the metal oxide is aluminum oxide, magnesium oxide, beryllium oxide, or combinations thereof; and wherein the non-foamed thermally conductive composition is free from filler particles comprising metal.