Abstract
The design of a two-dimensional high-frequency electrostatic microscanner is presented, and an
improved method for routing isolation trenches is investigated to increase the reliability and mechanical
stability of the resulting device. A sample device is fabricated and tested using an optimized micromachining
process. Measurement results indicate that the sample device oscillates at inherent frequencies of 11586 and
2047 Hz around the two rotational axes, thereby generating maximum twisting angles of +(-)7.28o and +(-)5.63o,
respectively, under two square waves of 40 V. These characteristics confirm the validity of our design and
satisfy the requirements of a laser projector with VGA standards.
© 2013 Chinese Optics Letters
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