Isamu Akasaki (born January 30, 1929) is a Japanese scientist, specializing in the field of semiconductor technology and Nobel Prize laureate, best known for inventing the bright gallium nitride (GaN) p-n junction blue LED in 1989 and subsequently the high-brightness GaN blue LED as well.He won Charles Stark Draper Prize in 2015 for the invention, development, and commercialization of materials and processes for light-emitting diodes (LEDs).