Thin film electroluminescent device with ZnS as host material
 A thin film electroluminescent (EL) device which emits a luminescence in response to the application of an electric field, and comprises ZnS as a host material and a rare earth element providing luminescent centers. 
Sharp Kabushiki Kaisha
H Y
H05B Y10S
inventional additional
Takashi Akiyoshi Kouji Masaru
Ogura Mikami Taniguchi Yoshida