Patent ID: 6783920
Filing Date: 2004-08-31
Classification: C03C,H05K,Y10S,Y10T

Abstract:
A method for forming differing aspect ratio features in a photostructurable material comprising a bulk material, a nucleating agent and a sensitizer, the method comprising the steps of,exposing an XYZ point within the photostructurable material at a respective intensity level at a focal point of a laser beam, repeating the exposing step for a plurality of XYZ points within the photostructurable material at a respective plurality of intensity levels, the respective plurality of intensity levels providing a variable intensity exposure of the photostructurable material, the photostructurable material having a plurality of etch rates depending on the respective plurality of intensity levels, baking the photostructurable material for transforming the nucleating agent into crystalline structures with differing etch rates that depend on the respective plurality of intensity levels, and etching the photostructurable material for etching the crystalline clusters for forming differing aspect ratio features.