Patent ID: 7938972

Claim:
A fabrication method of an electronic device, the method comprising: (a) providing a substrate; (b) forming a plurality of blocks on the substrate, and each block comprising a patterned amorphous carbon (α-C) layer formed on the substrate and a patterned dielectric anti-reflective coating (DARC) layer formed on the patterned α-C layer, the blocks exposing part of the substrate; (c) forming a first α-C layer on the patterned DARC layer, for covering the patterned DARC layer, the patterned α-C layer and part of the substrate; and (d) removing part of the substrate and part of the first α-C layer covering part of the substrate for forming a patterned substrate and a second α-C layer, wherein the second α-C layer formed on the patterned substrate is positioned at least on a top surface and a lateral surface of each block comprising the patterned DARC layer and the patterned α-C layer.