Tokyo and Kawasaki, Japan, February 24, 2014 — Fujitsu Limited and Fujitsu Laboratories Ltd. announced development of a prototype tablet with a touchscreen that conveys a sense of slipperiness or roughness depending on the image being displayed. This new haptic, or tactile, sensory technology was developed by Fujitsu Laboratories.

While technologies already exist that convey texture by vibrating the touchscreen display panel itself or by generating static electricity, Fujitsu Laboratories has developed the industry's first technology to use ultrasonic vibrations to convey tactile sensations by varying the friction between the touchscreen display and the user's finger. This technology enables tactile sensations – either smooth or rough, which had until now been difficult to achieve – right on the touchscreen display. Users can enjoy realistic tactile sensations as they are applied to images of objects displayed on the screen.

As the market for smartphones and tablets reaches maturity, customer priorities in terms of value are shifting away from specifications and functionality toward features that appeal to our senses and emotions, such as comfort and enjoyment. The Fujitsu Group has long worked toward developing products with a high degree of sensory value, primarily with technologies that offer enhanced visual and auditory features through the company's "Human Centric Engine" equipped on its smart devices. Now, by adding this tactile sensation feature, Fujitsu is offering customers a totally original experience that breaks new ground in usability and sensory expressiveness.

Mimicking an unprecedented realistic sensation of slipperiness

Inducing an ultrasonic vibration on the surface of the touchscreen display creates a high-pressure layer of air between the screen's surface and one's fingertip, which has the effect of reducing friction, creating a floating effect. Taking advantage of this phenomenon makes it possible to create a slippery sensation on a touchscreen display that had been previously difficult to achieve. While vibrations in the ultrasonic band require a significant amount of energy, Fujitsu has developed a technology that induces vibrations efficiently at mobile device sizes, and successfully produced a prototype that creates these tactile sensations.

A technology that creates a sensory illusion of bumpiness and roughness

By rapidly cycling between high and low friction in response to touch information on the panel and the screen's display information, this technology can generate a tactile illusion that the screen is bumpy or rough. The combination of tactile information, visual information from the display, and audio information from the speakers enriches the user experience.