Patent ID: 9059192
Filing Date: 2015-06-16
Classification: H01L

Abstract:
1. A manufacture method of a metal-insulation-metal (MIM) device, comprising: providing a first metal layer; forming a first insulation layer on the first metal layer; forming a second metal layer on the first insulation layer; etching a part of the second metal layer, wherein a remaining part of the second metal layer is not etched; forming a second insulation layer covering the remaining part of the second metal layer and the first insulation layer; etching the second insulation layer and maintaining a residual part of the second insulation layer on a side wall of the remaining part of the second metal layer; etching the first insulation layer after forming the residual part of the second insulation layer, wherein an intermediate part of the first insulation layer under the remaining part of the second metal layer and the residual part of the second insulation layer is not etched due to the remaining part of the second metal layer and the residual part of the second insulation layer serving as an etching barrier, wherein a width of the intermediate part of the first insulation layer parallel to the first metal layer is greater than a width of the remaining part of the second metal layer parallel to the first metal layer.