Display terminal, virtual tactile device, and virtual tactile system including thereof

A virtual tactile system, comprising:

• a display terminal;
• and
• a wearable device that is capable of being worn on a finger, which receives information on the position, shape, and physical properties of an object displayed on the screen of the display terminal, as well as information regarding the position of the user's finger;
• wherein the wearable device includes a micro-displacement stimulation element that is closely attached to the finger skin,
• wherein when the finger wearing the wearable device contacts the object displayed on the screen of the display terminal or moves on the screen of the display terminal, the micro-displacement stimulation element applies a micro-displacement stimulus to the finger skin,
• wherein the micro-displacement stimulus is a pulse signal having a waveform of a sine wave, a triangular wave, or a square wave, and
• wherein the micro-displacement stimulation element varies a pulse width and an amplitude of the micro-displacement stimulus over time to selectively trigger action potentials of multiple tactile receptors in the finger skin, and controls a time interval between pulses of the micro-displacement stimulus to control a time interval at which each of the action potentials is triggered, thereby providing tactile feedback including protruding pressure sensation, curvature, and friction texture in coordination with the screen of the display terminal.