A very thin component (2.4mm x 4.7mm x 34.5mm) is a distribute mode actuator which is made of piezoelectric thin films formed on metal plate. This device enables a flat panel screen to vibrate to make sounds. The flat display panel may vary from a mobile communications device to a desktop display system such as a personal computer. According to a news release from the supplier, Authentic, Ltd., the Authentic's DMA device is embedded in a mobile clinical assisting system of Philips FIMI.
I personally wish and expect that a further improved version of this device will be used when an organic electroluminescence display is commercially available some time in the near future.
Photo: Authentic's DMA
Source: Authentic's web site