Patent ID: 8936993
Filing Date: 2015-01-20
Classification: H01L

Abstract:
1. A method for producing a hybrid substrate comprising successively: providing a substrate successively comprising a layer made from a first semiconductor material, an isolation layer, a layer made from a second semiconductor material, and an etching mask including first and second covering areas separated by an uncovered area, etching the layer made from the second semiconductor material, the isolation layer, and the layer made from the first semiconductor material through the etching mask for delineating an isolation area, and a first active area in the layer made from the first semiconductor material, the first covering area protecting the first active area in the layer made from the first semiconductor material, the second covering area protecting a second active area in the layer made from the second semiconductor material, the first and second active areas being laterally offset, releasing a top surface of the second semiconductor material in the first active area, depositing a first isolation material so as to cover a main surface of the first active area and fill the etching mask, and etching the first isolation material for freeing the main surface of the first active area and simultaneously localizing the first isolation material in the isolation area.