31.1: Invited Paper: Programmable Electrostatic Surface for Tactile Perceptions

Abstract

We describe a fully programmable Electrostatic Tactile (ET) feedback system that delivers a range of tactile textures to a mobile display. The ET system is a robust, thin, and optically transparent structure that can be overlaid unobtrusively on top of a display screen. The system exploits the phenomenon of electrovibration to create a controllable frictional force between a user's fingertip and the surface. The system enables the realization of localized tactile information delivered to the user's skin directly, without moving parts. A tactile image is formed in accordance with the visual information displayed (virtual textures, tactile silhouettes, etc.). The magnitude and pattern of the frictional force on the display can be programmed to correspond to the images shown on the display and actual coordinates of the touch interaction in real time. This has been achieved using a variety of different materials, including those that are compatible with flexible devices.

Electrostatic Tactile Display Using Beat Phenomenon for Stimulus Localization

“…Tactile stimuli were formed in accordance with the visual information. Radivojevic et al [4] reported on the combination of electrostatic tactile display and liquid crystal display (LCD) for mobile use, where the tactile display was placed over the LCD. Since these electrostatic tactile displays combined with visual displays present the same tactile sensation over the entire surface, they are not suitable for multi-touch or multi-person tactile interaction.…”

“…This meets user demand for rich tactile feedback. There are three types of tactile displays with visual information: (I) one in which the touch surface vibrates with mechanical actuators such as coil-type actuators [1] or piezoelectric devices [2], (II) an electrostatic tactile display in which the electrode is located under an insulator layer [3], [4], and (III) an electrotactile display that directly activates sensory nerves via an electrical current [5]. In type (II), when a high AC voltage is applied to the electrode, the skin is attracted by electrostatic force.…”

P.153L: Late‐News Poster: An Interactive Application of Instant Haptic Feedback

“…As in Fig. 2, Nokia [4] demonstrated a possible application based on integration of touch and tactile feedback. Users can feel tactile impressions of different materials when their finger slides on the screen.…”

Capacitive touchscreen‐integrated electrostatic tactile display with localized sensation

“…There are three types of tactile displays that can be combined with visual displays: (I) one in which the touch surface vibrates with mechanical actuators such as coil‐type actuators or piezoelectric devices, (II) an electrostatic tactile display in which the electrode is located under an insulator layer, and (III) an electro‐tactile display that directly activates sensory nerves via an electrical current . In Type II, when a high alternating current (AC) voltage is applied to the electrode, the skin is attracted by electrostatic force.…”