| 摘要 |
PURPOSE: A portable terminal is provided to increase the amount of light which is provided to a keypad without increasing a total thickness of an optical guide film. CONSTITUTION: A printed circuit board(400) has the lower part of a keypad. The printed circuit board converts the operation about the keypad into an electrical signal. At least one optical source(500) selectively provides light to the keypad. An optical guide film(300) is included between the keypad and a printed circuit board. The optical guide film receives the light which is irradiated from the optical source to the side surface. The optical guide film reflects the received light to the keypad side. |
