Investigation of Piezoelectric Flexible ThinSpeakers

• Main Authors: Shih-wei Hsu, 許時偉
• Other Authors: none
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/89111044063105674083

碩士 === 逢甲大學 === 電聲碩士學位學程 === 100 === Modern audio and video towards thinner and miniaturization, for example: phone, TV, Tablet PC ... etc., flat speaker came into being. Goals for the research and development of this thesis, a flexible and thin speaker polymer piezoelectric film PVDF with flexible features due to PVDF. The goal of this thesis for the analysis of various parameters of the flexible piezoelectric thin speaker frequency response curve parameters There are four, including the the PVDF thickness diaphragm material, piezoelectric-driven approach and speaker shape. The parameters are set as follows PVDF thickness of 130μm and 40μm, diaphragm materials include polypropylene (PP), poly-ethylene terephthalate ester (PET), polyethylene naphthalate ethylene naphthalate (PEN), and aluminum foil, the piezoelectric The drive mode is divided into the unimorph drive and double-layer piezoelectric drive, and finally change its speaker shape is planar and the arc-shaped. Portion of the speaker measured in the anechoic chamber by Sound Check instrument for all the parameters measured, compare four parameters and frequency in response to the relationship between the curve in the diagram of the final use of the measured data, identify the piezoelectric flexible thin speaker the best parameters that will be an important basis for the future development of flexible piezoelectric thin speaker.