Patent ID: 7144820
Filing Date: 2006-12-05
Classification: H01L,Y10S

Abstract:
1. A method of manufacturing a layer sequence having a first and a second laterally confined structure, comprising the steps of: providing a first layer on a first surface portion of a substrate, which first layer is doped with dopant of a first type of conductivity; providing a second layer on a second surface portion of the substrate, which second layer is free of dopant of the first type of conductivity; forming a third layer on the first layer, which third layer is free of dopant of the first type of conductivity; forming a fourth layer on the second layer, which forth layer is doped with dopant of the first type of conductivity; etching the first layer and the third layer, thereby patterning the first and third layer to form the first laterally confined structure; and etching the second layer and the forth layer, thereby patterning the second and fourth layer to form the second laterally confined structure.