Patent ID: 7193346
Filing Date: 2007-03-20
Classification: H02K

Abstract:
1. A multi-mode vibration generating device for a communication terminal, comprising: a first vibration generator including a first coil assembly generating an electric field by an electric current applied by a first power applying arrangement, and a first magnet generating a magnetic field of a constant strength, and thereby generating a vibration of a given direction by an interaction between the electric field generated by the first coil assembly and the magnet field generated by the first magnet; and one or more second vibration generators including a second coil assembly vertically and sequentially attached to an upper part of the first vibration generator and generating an electric field by an electric current applied by of a second power applying arrangement, and a second magnet generating a magnetic field of a constant strength, and thereby generating a vibration of a given direction by an interaction between the electric field generated by the second coil assembly and the magnet field generated by the second magnet, wherein the second vibration generator generates a vibration of a direction different from a vibration direction of the first vibration generator, or generates a vibration of a frequency different from a vibration frequency of the first vibration generator, whereby various mode vibrations are generated.