Patent ID: 7536211

Claim:
A mobile terminal device, comprising: a speaker system; and a housing for supporting the speaker system, wherein the speaker system includes a display panel for displaying an image; a transparent panel provided such that the image displayed in the display panel is viewed through the transparent panel; an electric-mechanical-acoustic-transducer having a diaphragm for outputting a sound by vibrating the diaphragm in accordance with an electric signal; and an acoustic signal transfer member for transferring the sound output from the electric-mechanical-acoustic-transducer to a space provided between the display panel and the transparent panel, wherein the transparent panel is allowed to be vibrated by the sound transferred to the space from the electric-mechanical-acoustic-transducer via the acoustic signal transfer member, the mobile terminal device further comprising: an antenna for receiving a wireless signal; and a signal output section for outputting an electric signal to the electric-mechanical-acoustic-transducer based on the wireless signal received by the antenna, wherein the electric signal represents at least one of a received sound, a call arrival sound, music and voice.