| 摘要 |
PURPOSE: An electronic device is provided to make invisible design of an icon when the electronic device is not in use. CONSTITUTION: Cases(101,102) comprises inner surface and exterior surface. A recess unit(120) is recessed toward the exterior surface from the inner surface of the case. A light source(112) is equipped inside the case and is arranged in order to face the recess unit. A circuit board(111) is connected to the light source in order to control the supply of power to the light source. An icon generating unit(130) is arranged between the recess unit and light source and is equipped with transparent patterns corresponding to icons.
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