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Patent Searching and Data


Title:
ACTUATOR, PUMP, AND OPTICAL SCANNER
Document Type and Number:
Japanese Patent JP2008092613
Kind Code:
A
Abstract:

To provide an actuator that makes it possible to reduce power consumption and size more easily than the conventional one by applying an electrowetting phenomenon.

The actuator 11 includes: multiple drive electrodes 20 disposed on the insulating face of the bottom plate 12 of a pump; an insulating layer 21 covering the drive electrodes 20; a drive plate 22 opposed to the bottom plate 12 with a predetermined space in-between and partly fixed on the bottom plate 12; conductive droplets 23 disposed between the bottom plate 12 and the drive plate 22 in contact with both of them; and a driver IC 24 that applies electric potential to the drive electrodes 20. The driver IC 24 varies the electric potential of the drive electrodes 20, and the wetting angle of the droplets 23 to the insulating layer 21 is thereby varied to fluctuate the height of the droplets 23. The drive plate 22 is deformed according to this fluctuation in the height of the droplets 23.


Inventors:
SUGAWARA HIROTO
Application Number:
JP2006266900A
Publication Date:
April 17, 2008
Filing Date:
September 29, 2006
Export Citation:
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Assignee:
BROTHER IND LTD
International Classes:
H02N11/00; F04F99/00; H02N1/08
Attorney, Agent or Firm:
Yoshiyuki Kaji
Makoto Suhara
Toru Kimura