An AC thin film electroluminescent (TFEL) device includes a multilayer phosphor for emitting white light having improved emission intensity in the blue region of the spectrum. The multilayer stack consists of an inverted structure thin film stack having a red light emitting manganese doped zinc sulfide...http://www.google.fr/patents/US5598059?utm_source=gb-gplus-shareBrevet US5598059 - AC TFEL device having a white light emitting multilayer phosphor
AC TFEL device having a white light emitting multilayer phosphor
