Patent ID: 7229851

Claim:
A method for passivating a semiconductor chip stack having at least first and second semiconductor chips, which each have an upper face provided with at least one electronic component and at least one connecting contact, and are permanently connected to one another in an arrangement in which the upper faces of the first and second semiconductor chips face one another, with at least two mutually associated connecting contacts on the first and second semiconductor chips being electrically conductively connected to one another, the method comprising the steps of: applying a material of sufficiently low viscosity to the upper face of the first semiconductor chip, such that an intermediate space between the first and second semiconductor chips is filled with the material at least along one edge of the upper face of the second semiconductor chip; and largely removing the material from the upper face of the first semiconductor chip, such that a connecting contact pad on this upper face is exposed, and the intermediate space between the first and second semiconductor chips remains sealed on the outside.