Patent ID: 9611142
Date: 2017-04-04
CPC Classifications: B81B,B81C,G02B

Claim:
1. A method for manufacturing an electronic component, in which a substrate including at least first and second layers is etched to form a structure, comprising: a first etching step of etching the substrate from the first layer side; a mask formation step of forming a mask on the second layer side of the substrate; and a second etching step of etching, using the mask, the substrate from the second layer side, wherein at the first etching step, a portion of the structure formed of the first layer is formed as a pre-structure having a larger shape than a final shape, at the mask formation step, a mask corresponding to the final shape is formed on the second layer side of the substrate in the pre-structure as viewed in a thickness direction of the substrate, and at the second etching step, the second layer and the pre-structure are, using the mask corresponding to the final shape, etched to form the final shape.