Electroluminescent device and method for producing the same
Assignee3M Innovative Properties Company
InventorsHidetoshi Abe, Yoshinori Araki
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Abstract
An electroluminescent (EL) device is disclosed and includes an electroluminescent element (9) having a light-emitting surface (91), and a prismatic film (1) having a surface (11) on which a plurality of prisms are provided and a back surface (12) opposed to said surface (11) and being placed on said light-emitting surface (91), wherein the back surface (12) of the prismatic film (1) and said light-emitting-surface (91) of the electroluminescent element (9) are closely bonded optically. The EL device can effectively intensify the light which is emitted in the normal line direction and also in the direction deviating from the normal line, and increase the luminance in the wide observation angle range.
Claims20
An electroluminescent device comprising:
- an electroluminescent element having a light-emitting surface, and
- a prismatic film having a surface on which a plurality of prisms are provided and a back surface opposed to said surface and being placed on said light-emitting surface, where the back surface of the prismatic film and said light-emitting surface of the electroluminescent element are closely bonded optically.
An electroluminescent device comprising:
- an electroluminescent element having a light-emitting surface, and
- a prismatic film closely bonder optically to the light emitting surface of the electroluminescent element.
A method comprising optically bonding a light emitting surface of an electroluminescent element to a prismatic film such that substantially no air layer is present between the light emitting surface and the prismatic film.
Dependencies are inferred from the claim text.