Patent ID: 6911154
Filing Date: 2005-06-28
Classification: H01J

Abstract:
1. A method for manufacturing a structure on a substrate a first metallization level separated from the substrate by a first insulating layer and a second metallization level separated from the first metallization level by a second insulating layer, first openings, having a contour, being formed in the first metallization level and in the first insulating layer, and second openings, having an internal contour, larger than the first ones being defined in the second metallization level and the second insulating layer, the method including the steps of: forming on the substrate a piling of a first insulating layer, a first metallization level, a second insulating layer, and a second metallization level; opening first windows and second strip-shaped windows in the second metallization level and in the second insulating layer, the second windows having an internal contour and an external contour, wherein the first windows correspond to the contour of the first openings and the external contour of the second windows corresponds to the internal contour of the second openings; depositing a masking layer filling the second strip-shaped windows; forming third windows, larger than the first windows, in the masking layer; removing the first metallization level in the first windows; removing the second metallization level in the third windows and under the masking layer out to the internal contour of the second windows, etching the first insulating layer forming a recess, and simultaneously removing the second insulating layer within the internal contour of the second windows; and removing the masking layer.