Invention Grant
- Patent Title: Method and device for multistate interferometric light modulation
- Patent Title (中): 多态干涉光调制方法和装置
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Application No.: US12365121Application Date: 2009-02-03
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Publication No.: US07646529B2Publication Date: 2010-01-12
- Inventor: Clarence Chui
- Applicant: Clarence Chui
- Applicant Address: US CA San Diego
- Assignee: Qualcomm Mems Technologies, Inc.
- Current Assignee: Qualcomm Mems Technologies, Inc.
- Current Assignee Address: US CA San Diego
- Agency: Knobbe Martens Olson & Bear LLP
- Main IPC: G02B26/00
- IPC: G02B26/00 ; G02B26/02

Abstract:
A multi-state light modulator comprises a first reflector 104. A first electrode 142 is positioned at a distance from the first reflector 104. A second reflector 14 is positioned between the first reflector 104 and the first electrode 142. The second reflector 14 is movable between an undriven position, a first driven position, and a second driven position, each having a corresponding distance from the first reflector 104. In one embodiment, the light modulator has latch electrodes 17 and 143, which hold the light modulator in a driven state. In another embodiment the latch electrodes 17 and 143 are used to alter the actuation and release thresholds of the light modulator.
Public/Granted literature
- US20090135466A1 METHOD AND DEVICE FOR MULTISTATE INTERFEROMETRIC LIGHT MODULATION Public/Granted day:2009-05-28
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