|led_blue (Photo credit: Wikipedia)|
When I saw them, I remembered 3 doctors who invite Blue LED and won a 2014 Nobel Prize. If they don't invite Blue LED, I can't see a part of the colors we saw in the lighting and the lighting can't touch me or other viewers emotionally. If they don't invite Blue LED, we can't see clear electronic signboard for easy understanding at station and on road etc.
A few years ago, I saw a news that professor Nakamura went to court for asking his recompenses of inviting Blue LED to his previous company. When I saw that news, I surprised its amount (60 billion yen) as his recompenses and didn't know whether the recompenses were suitable, or not. But this time, I learned what effect Blue LED has for our life and industries and was glad that 3 doctors' research was recognized and was known very well.