Patent ID: 9539736
Date: 2017-01-10
CPC Classifications: B26D,H01L,Y10T

Claim:
1. A method for producing textures on a substrate comprising a surface material layer, the method comprising: pressing a scratcher against the substrate, the scratcher including a base structure and a plurality of micron-level features protruding away from the base structure, wherein pressing the scratcher comprises biasing the scratcher against the substrate such that at least some of the plurality of micron-level features pierce an outer surface of the surface material layer; and moving the scratcher relative to the substrate such that at least some of the plurality of micron-level features displace portions of said surface material layer in a manner that produces parallel elongated grooves defined in the surface material layer and separated by parallel elongated ridges formed by remaining portions of the surface material layer, wherein the plurality of micron-level features are arranged in a row on the base structure, and wherein positioning the scratcher over the substrate comprises aligning the row of said micron-level features in one of a cross-process direction that is substantially perpendicular to a process direction of said relative movement between said scratcher and said substrate, and a diagonal direction that is diagonal to said one of the cross-process direction and the process direction.