Patent ID: 7749864
Filing Date: 2010-07-06
Classification: H01L

Abstract:
1. A method for producing thinned semiconductor chips, the method comprising: producing a semiconductor wafer with a multiplicity of semiconductor chip positions which are arranged in rows and columns and comprise a top side with semiconductor element structures, interconnects and contact areas; applying the semiconductor wafer to an intermediate carrier by its top side; thinning the semiconductor wafer from its rear side after applying the top side to the intermediate carrier; applying an etching-resistant layer to the rear side of the semiconductor wafer whilst leaving free etching tracks between the semiconductor chip positions; and separation etching of the semiconductor wafer along the etching tracks to form thinned semiconductor chips on the intermediate carrier; and performing an ion implantation and patterned metallization of the rear side after thinning the semiconductor wafer and before applying the etching-resistant layer, the patterned metallization leaving free the etching tracks between the semiconductor chip positions.