Patent ID: 6959490
Filing Date: 2005-11-01
Classification: B41J,Y10T

Abstract:
1. A method of manufacturing a silicon device in which a sealing plate having a thin-film pattern holding portion defining a space for sealing a thin-film pattern is joined to a silicon substrate which has the thin-film pattern including at least a first conductive layer, an insulation layer and a second conductive layer that are sequentially laminated and has a concave portion on a side opposed to the thin-film pattern, the method comprising the steps of: in forming the thin-film pattern on one surface of a silicon wafer, forming a moisture permeation preventive pattern in such a manner that a first moisture permeation preventive layer is formed in the same layer as the first conductive layer on the silicon wafer so as to surround the entire thin-film pattern of the silicon wafer, a second moisture permeation preventive layer with a width narrower than that of the first moisture permeation preventive layer is formed in the same layer as the insulation layer on the first moisture permeation preventive layer, and a third moisture permeation preventive layer is formed in the same layer as the second conductive layer on the second moisture permeation preventive layer so as to cover the second moisture permeation preventive layer; joining the sealing plate onto the silicon wafer through the moisture permeation preventive pattern interposed therebetween; and forming the concave portion by etching the silicon wafer from the other surface thereof.