Patent ID: 6586305
Filing Date: 2003-07-01
Classification: H01L

Abstract:
A method for producing of an integrated semiconductor circuit, which comprises the steps of:providing a semiconductor substrate having a first surface area and a second surface area being adjacent to the first surface area; applying a first conductive layer to the semiconductor substrate; producing a first covering layer on the first conductive layer, the first covering layer extending over the first surface area of the semiconductor substrate; applying a second conductive layer over the first covering layer and the first conductive layer; producing a second covering layer on the second conductive layer in the second surface area of the semiconductor substrate, the second covering layer being separated by a boundary area of a predetermined minimum width from a boundary between the first surface area and the second surface area; and carrying out an etching process to remove the second conductive layer selectively with respect to the first covering layer and with respect to the second covering layer, as a result of which the second conductive layer, and also the first conductive layer in the boundary area are removed, and a trench being formed between the first covering layer and the second covering layer.