Why Was Developing Blue LEDs Nearly Impossible? Unraveling the Mystery

An introduction to an English documentary program explaining how difficult it was to realize blue LEDs. Touches upon the great achievement of the Japanese researchers who solved a problem thought impossible, and the gap in how it was evaluated domestically.

Why Making the Blue LED Was Almost Impossible

An introduction to an English documentary program. It is very interesting. I have a strong impression that the Japanese who solved such a highly difficult problem were not well-appreciated within Japan at first.