Patent ID: 8343780
Filing Date: 2013-01-01
Classification: H01L

Abstract:
1. A method for increasing a stress or a deformation in a layer starting from an initial component comprising said layer above a prestressed amorphous layer, the method comprising the steps of: providing an initial component including the layer having a width above the prestressed amorphous layer, wherein the layer and the prestressed amorphous layer are different materials and the prestressed amorphous layer is in a state of stress because it includes a deformation; selecting a depth of etching for a portion of the prestressed amorphous layer as a function of the width of said layer above the prestressed amorphous layer to achieve a particular level of stress or deformation in said layer and reduce a level of stress in the prestressed amorphous layer; and etching said portion of the prestressed amorphous layer to the selected depth of etching, which relaxes the prestressed amorphous layer and transfers stress or deformation from the prestressed amorphous layer to said layer left above an unetched portion of said prestressed amorphous layer, which provides said layer left above the unetched portion of said prestressed amorphous layer with said particular level of stress or deformation.