Patent ID: 9202702
Filing Date: 2015-12-01
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device having at least one contact, the method comprising: forming a lift-off layer on an insulating layer at least partially covering a surface of a substrate, a continuous recess in the lift-off layer and the insulating layer being provided at at least one position of at least one contact to be formed, the insulating layer having inner walls covered by the lift-off layer; forming a conforming layer made of a conductive material including at least one metal, which completely covers the at least one position of the at least one contact to be formed and a portion of the lift-off layer covering the inner walls of the insulating layer; covering at least one area of the conforming layer, situated in the at least one position, with a mask which is formed with at least one continuous recess above a residual area of the conforming layer situated externally from the at least one position; carrying out an etching process, the residual area being at least partially etched away during the etching process; and carrying out a lift-off process, the lift-off layer being removed and at least one layer being structured out as at least part of the at least one contact in the at least one position, wherein tear-off marks are formed on at least one outer side area between an outer base area facing the surface and an outer contact area facing away from the surface during removal of the lift-off layer by tearing away the residual area remaining after the etching process; wherein the method includes only one negative resist step.