| 摘要 |
A data input device of an electronic device for conveniently inputting data is provided to improve data input interfacing environment by indicating a marking part which is larger than a key top area of a limited size and previously preventing the disruption of use by indicating a purpose of use only by the marking part. A plurality of optical source parts is arranged by external input keys and irradiates the light source of the multiplicity colors. Multi-layer transparent films(3211,312) prints a plurality of marking parts(313) which are visually indicated to a user. A first transparent film prints a first marking part of a first color. A second transparent film prints a second marking part of a second color in order to be laminated to the first transparent film. |
