| 摘要 |
<p>The present invention relates to a case (20) for protecting a portable information device (10) from external shock by being combined with the portable information device (10) such as a mobile communication terminal, a tablet PC, etc. An electronic ink display device is attached on the surface of the case (20) to be combined with a rear part of the information device (10) and a driving device (40) which drives the electronic ink display device (30) and performs wireless communication with the information device (10) is embedded in the case (20) to output transmission information of an application program installed on the information device (10) to the electronic ink display device (30). According to the present invention, the present invention has an effect of increasing the usability and convenience of the portable information device (10) by visual output through the front or the rear without replacing or remodeling the portable information device (10).</p> |
