Patent ID: 8932941
Filing Date: 2015-01-13
Classification: B82Y,H01L,Y10S

Abstract:
1. A method of manufacturing a graphene device, the method comprising: forming an insulating material layer on a substrate; forming a first metal pad and a second metal pad on the insulating material layer to be spaced apart from each other; forming a graphene layer between the first metal pad and the second metal pad on the insulating material layer, the graphene layer having a portion defined as an active area; forming a third metal pad and a fourth metal pad on the graphene layer to be spaced apart from each other with the active area therebetween, the third metal pad extending from the graphene layer between the first metal pad and the second metal pad to an upper surface of the first metal pad and the fourth metal pad extending from the graphene layer between the first metal pad and the second metal pad to an upper surface of the second metal pad; forming a first protection layer having a first portion covering the active area and a second portion covering the first metal pad, the second metal pad, the third metal pad, and the fourth metal pad; and etching an entire surface of the first protection layer until only a residual layer made of a material for the forming a first protection layer remains on the active area, wherein a thickness of the first portion of the first protection layer is thicker than the second portion of the first protection layer.