G - Physics – 09 – F
Patent
G - Physics
09
F
345/5
G09F 9/00 (2006.01) H05B 33/22 (2006.01)
Patent
CA 1250038
ABSTRACT OF THE DISCLOSURE Electroluminescent display device suitable for ac and unipolar pulse voltage operation, and ensuring an increased lumi- nescent brightness and a low driving voltage, comprises a trans- parent electrically insulating substrate; an electroluminescent layer comprised of zinc sulfide (ZnS) and at least one luminesc- ingly active material; an electrically insulating layer formed on one surface of said electroluminescent layer; and first and sec- ond energizing means for applying signal voltages across said electroluminescent layer and said insulating layer corresponding to information to be displayed, wherein said first energizing means is interposed between said transparent substrate and said electroluminescent layer, and includes at least one semiconduc- tive electrode which contacts said electroluminescent layer and is comprised of a semiconductive material containing at least one chemical compound selected from the group consisting of the chem- ical compounds of Groups II-VI, and wherein said second energiz- ing means is arranged on said insulating layer on the surface thereof opposite said electroluminescent layer.
445263
Abe Atushi
Fujita Yosuke
Matsuoka Tomizo
Nitta Tsuneharu
Tohda Takao
Marks & Clerk
Matsushita Electric Industrial Co. Ltd.
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