Abstract: Proposed is an actuator using a bi-directional electrostatic force, which generates a bi-directional electrostatic force in order to amplify and vibrate the vibration of a vibrator. The actuator may include an upper electrostatic force generator configured to generate a first electrostatic force in response to a first high voltage signal, a lower electrostatic force generator configured to generate a second electrostatic force in response to a second high voltage signal having a phase difference with the first high voltage signal, and a vibration generator positioned in a space between the upper electrostatic force generator and the lower electrostatic force generator and configured to generate vibration in response to the first and second electrostatic forces.

Abstract: Proposed is an actuator using a bi-directional electrostatic force, which generates a bi-directional electrostatic force in order to amplify and vibrate the vibration of a vibrator. The actuator may include an upper electrostatic force generator configured to generate a first electrostatic force in response to a first high voltage signal, a lower electrostatic force generator configured to generate a second electrostatic force in response to a second high voltage signal having a phase difference with the first high voltage signal, and a vibration generator positioned in a space between the upper electrostatic force generator and the lower electrostatic force generator and configured to generate vibration in response to the first and second electrostatic forces.

Abstract: A multiple actuator drive control device for generating a sense of touch, comprising: an interface unit which receives an event-generation signal from a main processor; a parameter storage unit which stores event parameter groups that record event parameters necessary for event generation including channel-specific actuator form data and actuator-form-specific drive frequency data, for generating a sense of touch, and which selects and outputs one of the stored event parameter groups upon receipt of the event-generation signal; an event parameter analysis unit which analyses the event parameters of the event parameter group received from the parameter storage unit; a drive waveform generating unit which generates corresponding drive waveforms specific to each channel in accordance with the channel-specific actuator form and drive frequency data analyzed in the event parameter analysis unit; and an actuator drive unit which drives each of the channel-specific actuators in accordance with the drive waveform.