Patent ID: 8440538
Filing Date: 2013-05-14
Classification: H01L

Abstract:
1. A method of manufacturing an airbridge, comprising: forming a first spacer layer on a substrate including a semiconductor element so that the first spacer layer covers a component to be located below the airbridge, the first spacer layer having a width extending in a width direction of the airbridge and a first length extending in a length direction of the airbridge, the width direction being a direction in which space under the airbridge extends, the length direction being a direction in which the airbridge extends over and straddles the component to be located on the substrate, below the airbridge; forming a second spacer layer on the first spacer layer so that the first and second spacer layers are a layer stack structure having a stepped shape, in a cross section taken in a plane perpendicular to the width direction of the airbridge, the second spacer layer having a second length in the length direction of the airbridge, the second length being shorter than the first length of the first spacer layer, wherein forming a material layer over the layer stack structure, without any heat treatment that deforms the layer stack structure, the material layer forming the airbridge; and after the forming of the material layer, removing the layer stack structure.