Patent ID: 6337172
Filing Date: 2002-01-08
Classification: G03F,H01L

Abstract:
A method for forming a contact opening through an insulating layer of a semiconductor device structure, comprising:applying photoresist to the insulating layer of the semiconductor device structure, the insulating layer overlying a first structure of the semiconductor device structure; exposing photoresist at a first area of the semiconductor device structure to a first dosage of radiation; exposing photoresist at a second area of the semiconductor device structure, located adjacent to or at least partially superimposed by said first area, to a second dosage of radiation; concurrently removing a first depth of photoresist at said first area and a second depth of photoresist at said second area so as to at least partially expose the insulating layer at said second area; removing material of the insulating layer at said second area; concurrently removing material of a portion of the insulating layer in said second area and photoresist remaining within said first area so as to at least partially expose said first structure through the insulating layer.