| 摘要 |
<p>PURPOSE: A mobile communication terminal having a back touch screen is provided to improve the text input speed through a multi-touch operation by installing a touch screen at a backside thereof. CONSTITUTION: A light-collecting unit is installed at a body and comprises solar cells which convert solar light into electric energy. A back touch screen(30) is installed at the backside of the body to send a touch signal to a CPU according to a user operation. A key input unit is formed at an edge portion of the back touch screen to transfer the touch signal to the CPU. A screen unit(50) is installed at an upper portion of the body and displays the information and a touch point to a user based on the control signal of the CPU.</p> |
