Thin film electroluminescent device and method of manufacturing the same

A thin film electroluminescent (EL) device comprises a transparent electrode (32), a first insulating layer (34), a luminescent layer (35) and a back electrode (37), said luminescent layer consisting of column polycrystals formed by independently evaporating luminescent host material and an activato...

Full description

Saved in:
Bibliographic Details
Main Authors WATANABE, TAKEHITO, NIRE, TAKASHI
Format Patent
LanguageEnglish
French
German
Published 22.07.1987
Subjects
ADHESIVES
CHEMISTRY
DYES
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
Online AccessGet full text

Cover

More Information
Summary:A thin film electroluminescent (EL) device comprises a transparent electrode (32), a first insulating layer (34), a luminescent layer (35) and a back electrode (37), said luminescent layer consisting of column polycrystals formed by independently evaporating luminescent host material and an activator (Im) and then combining evaporated substances on a substrate. Electrons (E) in the luminescent layer are accelerated by an electric field applied from outside, efficiently collide against the activator (Im) without being intercepted by interfaces between crystalline particles. A further insulating layer (33) is interposed between said transparent electrode and said first insulating layer, said further insulating layer having a refractive index intermediate of those of said transparent electrode and said first insulating layer. The thin film EL device can be used for display, illumination, writing, reading out and erasure of signals of photo-recording medium.
Bibliography:Application Number: EP19870100094