Optical laminate, method for manufacturing same, smart window comprising same, and vehicle and building windows and doors using same

Abstract

The present invention relates to a variable transmittance optical laminate, a method for manufacturing same, a smart window comprising same, and vehicle and building windows and doors using same, the variable transmittance optical laminate comprising: a first polarizing plate including a first polarizer; a first transparent conductive layer formed on one surface of the first polarizing plate; a second polarizing plate which faces the first polarizing plate and includes a second polarizer; a second transparent conductive layer which is formed on one surface of the second polarizing plate and faces the first transparent conductive layer; and a liquid crystal layer provided between the first transparent conductive layer and the second transparent conductive layer, wherein at least one of the first polarizing plate or the second polarizing plate includes a retardation layer, the in-plane retardation value of the retardation layer is 230 nm to 280 nm, and the contained angle between the optical axis of the retardation layer and the alignment axis of the liquid crystal layer is 43° to 47°.

Dependencies are inferred from the claim text.