有機 ゆうき発光 はっこうダイオードであれば
yūkihakkōdaiōdodeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 有機発光ダイオード

1. If it is an organic light-emitting diode.; When it is an organic light-emitting diode.

Ba Conditional
Electronics