Electroluminescent retroreflective article
Assignee3M Innovative Properties Company
InventorsYoshinori Araki, Hidetoshi Abe
Life of this patent
Estimating the term…
Abstract
Electroluminescent retroreflective article comprising: (a) a retroreflective member comprising (1) a cube corner member having a front surface and a back surface, the back surface having a plurality of cube corner elements protruding therefrom and (2) a seal film bonded to the back surface having a first surface oriented toward the cube corner elements and a second surface oriented away from the cube corner elements; and (b) an electroluminescent element bonded to the second surface of the seal film such that the electroluminescent element emits light incident to the seal film.
Claims4
An electroluminescent retroreflective article comprising:
- (a) a retroreflective member comprising (1) a cube comer member having a front surface and a back surface, said back surface having a plurality of cube comer elements protruding therefrom and (2) a seal film bonded to selected portions of said back surface and having a first surface oriented toward said cube corner elements and a second surface oriented away from said cube corner elements, said film sealed to said selected portions of said back surface of said cube corner member in a pattern of interconnecting bonds so as to occupy 10 to 85% of the whole back surface of the cube corner member to define a plurality of sealed cells;
- and
- (b) an electroluminescent element bonded to said second surface of said seal film.
Dependencies are inferred from the claim text.