USING LIGHT GUIDE PLATE, KEY MODULE, AND ELECTRONIC EQUIPMENT USING LIGHT GUIDE PLATE OR KEY MODULE

摘要

<P>PROBLEM TO BE SOLVED: To provide: a light guide plate capable of improving luminance of an input key by using a light-accumulating material and capable of reducing luminous intensity of a light source, thereby achieving energy saving; a key module; and electronic equipment using the light guide plate or the key module. Ž<P>SOLUTION: In the key module 2 provided with the input key 11 for entering a designated instruction, the light guide plate 20 located below the input key 11 and illuminating light from a light source 40 in the input key 11 direction, and a circuit board 50 located below the light guide plate 20 and switching on and off by the input key 11, a light-accumulating means for accumulating and discharging light is arranged between the light guide plate 20 and the circuit board 50. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž