Invention Grant
- Patent Title: Voice coil motor with surface coil
- Patent Title (中): 音圈电机带表面线圈
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Application No.: US12496615Application Date: 2009-07-01
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Publication No.: US07932645B2Publication Date: 2011-04-26
- Inventor: Chuo-Han Tsai , Shih-Chuan Lee
- Applicant: Chuo-Han Tsai , Shih-Chuan Lee
- Applicant Address: TW Science-based Industrial Park, Hsinchu
- Assignee: Vasstek International Corp.
- Current Assignee: Vasstek International Corp.
- Current Assignee Address: TW Science-based Industrial Park, Hsinchu
- Agent Winston Hsu; Scott Margo
- Priority: TW98108614A 20090317
- Main IPC: H02K41/00
- IPC: H02K41/00

Abstract:
A voice coil motor with a surface coil includes a set of magnetic sensing elements, a lens carrier physically connected to the set of magnetic sensing elements, a pedestal, and a set of printed circuit boards fixed onto the pedestal. A patterned metal layer is fabricated on the set of printed circuit boards to form the surface coil, a Hall sensor is installed on one of the printed circuit boards and transmits signals (e.g., operation voltages and feedback sensing signals) via traces fabricated on the set of printed circuit boards, so as to achieve simultaneous fabrication of the surface coil and traces, thereby saving space which is conventionally occupied by copper coils. The Hall sensor can sense a variation in a magnetic field resulting from the motion of the set of magnetic sensing elements to determine a motion status of the lens carrier.
Public/Granted literature
- US20100237718A1 VOICE COIL MOTOR WITH SURFACE COIL Public/Granted day:2010-09-23
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