Patent ID: 6716741
Filing Date: 2004-04-06
Classification: H01L,Y10S

Abstract:
A method for patterning a dielectric layer to form an opening in the dielectric layer, comprising:providing a substrate; forming a dielectric layer on the substrate by spin-coating; providing a photomask having a pattern; applying a X-ray beam directly to the dielectric layer to selectively cure the dielectric layer without using a photoresist layer, wherein the photomask is used for transferring the pattern onto the dielectric layer; performing a developing process to form an opening in the dielectric layer by using a developing solution, wherein a portion of the dielectric layer is exposed to the X-ray beam and cured, thus becoming insoluble to the developing solution, and wherein an unexposed portion of the dielectric layer is soluble to the developing solution and is thus removed to form the opening; and after performing the developing process, a baking process is performed to eliminate water absorption; wherein a material of the dielectric layer is a silica-based spin-on material, and the silica-based spin-on material comprises porous silicate.