Patent ID: 8505357
Filing Date: 2013-08-13
Classification: G01C,Y10T

Abstract:
1. A method for adjusting the resonant frequencies of a vibrating MEMS device comprising the steps of: determining a first resonant frequency of the vibrating MEMS device along a first axis and a second resonant frequency of the vibrating MEMS device along a second axis; determining a mass removal amount of the vibrating MEMS device and a mass removal location of the vibrating MEMS device to alter the first resonant frequency of the vibrating MEMS device for decreasing a resonant frequency difference between the first resonant frequency and the second resonant frequency; coating a surface of the vibrating MEMS device with a masking material; selectively removing the masking material at the mass removal location using laser ablation; and etching the vibrating MEMS device to remove the mass removal amount of the vibrating MEMS device at the mass removal location of the vibrating MEMS device.