| 摘要 |
In a button for an electronic device, a red numeral pattern 21, a green kana pattern 31 and a black English character pattern 41 are printed on a key top 11 as plural kinds of patterns. By selectively causing a red LED 51 and a green LED 52 that function as a light source of a backlight to emit a light, red, green and orange lighting colors of the backlight are obtained. According to the color of the pattern used according to a mode, the lighting color of the backlight is switched.
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