Patent ID: 8580485
Filing Date: 2013-11-12
Classification: B44C,G03F

Abstract:
1. A method for forming a three-dimensional pattern, the method comprising: providing a shaped workpiece having an inner surface and an outer surface, a first photoresist layer and a second photoresist layer being respectively formed on the outer surface and the inner surface; disposing and positioning the shaped workpiece on a transparent fixture, wherein a profile of the transparent fixture matches a profile of the inner surface; exposing and developing the first photoresist layer and the second photoresist layer, such that the first photoresist layer forms a patterned photoresist layer, and the second photoresist layer forms an etching protection layer, wherein an exposure light provided by an exposure light source passes through the entire transparent fixture, and the second photoresist layer formed on the inner surface entirely is completely exposed; etching the shaped workpiece to form the three-dimensional pattern on the outer surface of the shaped workpiece; and removing the patterned photoresist layer and the etching protection layer.