Patent ID: 9548720
Date: 2017-01-17
CPC Classifications: H01L,H02N,H03B,H03H,Y10T

Claim:
1. A microelectromechanical system (MEMS) resonator comprising: a resonant member that oscillates at a resonant frequency and in a mechanical resonance mode in which the resonant member is subject to non-uniform regional stresses such that a first level of mechanical stress in a first region of the resonant member is higher than a second level of mechanical stress in a second region of the resonant member, the resonant member having (i) a first surface that spans the first and second regions, and (ii) a plurality openings formed in the first surface and disposed more densely within the first region than the second region; and a compensating material disposed within each of the openings in the first surface to reduce temperature dependence of the resonant frequency of the resonant member.