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학술대회 Application of Ionic Polymer-Metal Composites for Auto-Focusing Compact Camera Modules
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이형근, 최낙진, 정선경, 이선영, 정회원, 류재욱, 박강호
Electroactive Polymer Actuators and Devices (EAPAD) 2008 (SPIE 6927), v.6927, pp.1-7
07MB2600, 유비쿼터스 단말용 부품 모듈, 김종대
Step-motor, piezo, liquid lens and voice coil motor (VCM) have been thought as good candidates for actuators in autofocusing compact camera module (CCM). Currently, VCMs take possession of big place in auto-focusing CCM market. However, VCMs have limitations in developing thin, low-power CCMs. Therefore, ionic polymer-metal composites (IPMCs) could be thought as one of the best candidates in developing auto-focusing CCM due to their well-known characteristics such as low-power consumption and large displacement. It is required that fast bending response (20 μm/20 ms) and large blocking force (800 mgf) should be achieved for the practical applications of IPMCs in developing auto-focusing CCM. Here, we present the method for increasing IPMCs bending response and displacement by anisotropic plasma treatment. Furthermore, we demonstrate the fabrication of a prototype of CCM actuated by IPMC and its remarkable low power consumption.
KSP 제안 키워드
Auto-focusing, Bending response, Blocking force, Compact camera module, Ionic polymer-metal composites, Large Displacement, Liquid lens, low power consumption, plasma treatment, practical application, voice coil motor