Patent ID: 8216772
Filing Date: 2012-07-10
Classification: G03B,G03F

Abstract:
1. A method for manufacturing mechanical shutter blades, comprising: providing a beryllium-copper alloy substrate, the substrate having a first smooth surface and a second smooth surface opposite to the first smooth surface; applying a first and a second photoresist layer onto the first and second surfaces respectively; exposing and developing the first and second photoresist layers, whereby a plurality of first portions of the first photoresist layer and a plurality of second portions of the second photoresist layer are left on the first and second surfaces and a plurality of unwanted portions of the substrate is exposed to an exterior, and the plurality of first portions are aligned with the respective plurality of second portions, each of the plurality of unwanted portions having a first exposed surface and a second exposed surface opposite to the first exposed surface, the first exposed surface being between two adjacent first portions of the plurality of first portions, and the second exposed surface being between two adjacent second portions of the plurality of second portions; etching the unwanted portions of the substrate from the first exposed surfaces to the second exposed surfaces and from the second exposed surfaces to the first exposed surfaces to remove the unwanted portions, thereby obtaining a plurality of remaining portions of the substrate; and removing the first and second portions from the remaining portions of the substrate.