Flexible displays that can be rolled up would allow users to enjoy programs wherever they are. NHK Science & Technical Research Laboratories have been developing flexible displays for mobile television. The loudspeakers for such televisions must have the same features as the displays; they must be thin, lightweight, and flexible. We created two types of loudspeakers; one was made of polyvinylidene fluoride and the other used electro-dynamic actuators. Their characteristics were demonstrated to be suitable for mobile use and promising for flexible displays.
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