KEMET Launches High-definition Piezoelectric Thin-film Haptic Actuators for Next-generation User Interfaces

Thin-film actuators can add tactile skin to any product surface to produce local and independent sensations at any frequency, thereby producing various tactile effects.

KEMET launched an innovative haptic solution: a piezoelectric polymer film haptic actuator. When this type of actuator is directly embedded on the surface of the product, it can act as a tactile skin, providing local body sensations and tactile effects that other tactile solutions currently on the market do not have. KEMET?s thin-film actuators enable design engineers to use high-performance actuators to implement a variety of advanced touch solutions, including remote control, smart buttons, medical equipment, AR/VR. And a wide range of applications including anything that comes into contact with hands, fingers, head and lips.

Piezoelectric haptic solutions are used in many applications, but they are usually large and heavy, which can cause the entire device to jitter. In contrast, KEMET?s tactile actuator is thin (150?m), flexible, and consistent. It is made of a patent-protected, paper-thin proprietary material, which is also an electroactive polymer. The object film, by which the piezoelectric effect can be used to imitate the sense of touch.

Unlike the Eccentric Rotational Mass (ERM) technology that is often used for haptic devices, KEMET's electronic haptic actuator does not cause the entire device to shake. KEMET's lightweight piezoelectric polymer film actuators provide excellent performance, with various combinations of displacement and force, and fast response time, so it can provide high-definition tactile feedback.

This tactile actuator can convey specific material textures and familiar feelings, such as button clicks and raindrops through the local feeling on the surface of consumer devices. Combining the high bandwidth of the device with the physiology of tactile sensation can make many consumer devices, including game controllers, virtual reality (VR) haptic gloves, and devices with touch user interfaces, have a richer user experience. This tactile actuator uses touch to increase immersion and user satisfaction, allowing for in-depth interaction with consumer devices.

According to a report by IDTechEx Research, a consulting firm based in Cambridge, UK, the haptic technology market is growing exponentially and is expected to be worth close to US$5 billion by 2025. Its growing applications on smartphones will drive this growth. Nevertheless, this technology has also begun to emerge in other industries and products, whereby newer and more advanced haptic technologies can be used to achieve significant improvements in performance and versatility.

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