Patent ID: 8101502
Filing Date: 2012-01-24
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device, comprising: a device portion forming step of forming a device portion by forming a device formed in a substrate layer, then forming a first planarizing layer covering at least a part of the device and having at least one contact hole, then, forming a plurality of conductive films including at least one conductive film connected to the device through the at least one contact hole on a surface of the first planarizing layer, and then, forming a second planarizing, layer covering the plurality of conductive films, the device portion having the device, the first planarizing layer, the plurality of conductive films, and the second planarizing layer; a peel-off layer farming step of forming a peel-off layer by ion implanting a peel-off material to the substrate layer; a bonding step of bonding the device portion with a substrate; and a separating step of separating and removing a part of the substrate layer along the peel-off layer, wherein the device portion forming step includes an assisting layer forming step of forming a planarization assisting layer, which covers the plurality of conductive films, over the first planarizing layer before forming the second planarizing layer, and in the assisting layer forming step, the planarization assisting layer is formed so that a height of the planarization assisting layer from a surface of the first planarizing layer located on a side opposite to the substrate layer becomes equal between at least a part of a region where the conductive films are formed, and at least a part of a region where no conductive film is formed.