Optical display having novel casing structure

Details Optical display having novel casing structure Optical display having novel casing structure

G - Physics

02

F

345/59

G02F 1/13 (2006.01) G02F 1/01 (2006.01)

Patent

CA 1086847

ABSTRACT Optical devices and especially electrochromic devices comprising a sealed cell containing an aqueous medium and having a pair of opposed walls, at least one of which is transparent. Breakage due to freezing is minimized by providing a cell in which one of the walls is dished, having a main portion which is parallel to the other wall and a sloping peripheral portion surrounding the main portion and intersecting the other wall at an angle not greater than 30°.

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