Patent ID: 6364757
Filing Date: 2002-04-02
Classification: B24B

Abstract:
A planarizing medium for planarizing microelectronic substrates, comprising:a planarizing film impervious to a solution, the film comprising a polyester body with an upper surface; a plurality of micro-features configured in a selected, duplicated pattern on the upper surface of the film, the selected pattern having a plurality of first raised features defining support points, at least one cavity below the support points, and a plurality of second raised features between and below the support points, wherein the micro-features further comprise a fine mesh on the upper surface of the film having woven strands, the first raised features being high points along the strands and the second raised features being side portions of the strands, further wherein the fine mesh comprises small nylon fibers woven in a mesh with 0.5% to 5% openings, and the nylon fibers comprise 2.0 &mgr;m to 5.0 &mgr;m fibers.