Low voltage operation electrostatic comb drive micro-mirror for laser scanning display

Hoang Manh Chu, Hung Vu Ngoc, Kazuhiro Hane

Abstract


Electrostatic comb drive micro-mirror has limitation of high operation voltage, which has limited its practice use. Recent developments in decreasing operation voltage are promising for mobile micro-mirror. Especially, the operation voltage is decreased substantially by removing the air friction of comb-drive micro-mirror at a high resonant frequency when the mirror is operated at low pressure. Removing simultaneously the air friction and anchor loss, electrostatic comb-drive micro-mirror operating at a few voltages at a high resonant frequency becomes possible. This paper presents our recent developments as well as emerging techniques introduced in literature for decreasing the operation voltage of electrostatic comb drive micro-mirror. Methods for decreasing the operation voltage at large rotation angle and high scan frequency for application in the laser scanning display are focused to discuss in this paper.


Keywords


Micro-mirror; vertical electrostatic comb drive; air damping; Q factor

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DOI: https://doi.org/10.15625/0866-7136/34/4/2336 Display counter: Abstract : 41 views. PDF : 73 views.

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