Patent ID: 6730534
Filing Date: 2004-05-04
Classification: B33Y,B81B,B81C,G01P,H01L,H03H

Abstract:
A method of manufacturing a three-dimensional structure having portions different in thickness, the method comprising:forming a laminated structure, which comprises at least two layers to be processed and at least one inner mask interposed between the layers, the layers and the inner mask being joined together, such that the laminated structure has top and bottom major surfaces; forming an outer mask on at least one of the major surfaces of the laminated structure; selectively etching the layers from one of the major surfaces of the laminated structure through the outer mask to expose the inner mask and then through the inner mask and selectively etching the layers through at least one opening portion of the inner mask after the inner mask is exposed, so that the portions different in thickness are formed by one etching process.