Transmittance-variable optical laminate and manufacturing method therefor, and smart window comprising same

Abstract

The present disclosure relates to a transmittance variable optical laminate including: a first laminate in which a first polarizing plate including a first hard coating layer, a first transparent conductive layer, and a first alignment film are laminated in that order; a second laminate in which a second polarizing plate including a second hard coating layer, a second transparent conductive layer, and a second alignment film are laminated in that order; and a liquid crystal layer disposed between the first alignment film and the second alignment film, wherein at least one transparent conductive layer of the first transparent conductive layer and the second transparent conductive layer is formed in direct contact with one polarizing plate of the first polarizing plate and the second polarizing plate, and includes ball spacers embedded and fixed in at least one hard coating layer of the first hard coating layer and the second hard coating layer so as to maintain a gap between layers existing above and below the liquid crystal layer, the diameter (A) of the ball spacers is 3 to 14 μm, the hard coating layer having the ball spacers embedded therein has a thickness (B) of 1 to 10 μm, and (A)-(B) has a value of 2 to 10 μm, a method for manufacturing the same, a smart window including the same, and a means of transportation, an automobile, a wearable device, and a building window to which the same is applied.

Dependencies are inferred from the claim text.