Complex sentence: Teranishi studied physics at the University of Tokyo and joined NEC Corporation in 1978, where he invented the pinned photodiode in 1980; the device was named in 1984.
Split into simpler sentences: Teranishi studied physics at the University of Tokyo. He joined NEC Corporation in 1978, where he invented the pinned photodiode in 1980; the device was named in 1984.