Light modulation element
AssigneeLG Chem, Ltd.
InventorsMin Jun Gim, Eun Jung Lim, Jung Sun You, Jin Hong Kim, Hyun Jun Lee, Dong Hyun Oh
Life of this patent
Estimating the term…
Abstract
A light modulation element that can vary between a bright transparent mode and a dark scattering mode is provided. The light modulation element has a first light modulation layer and a second light modulation layer comprising nematic liquid crystals and a dichroic dye in a scattering mode when a voltage is applied. The first light modulation layer and the second light modulation layer are disposed to overlap each other. The light modulation element has an improved contrast ratio and haze-variable characteristics, without precipitation of dichroic dyes and an increase in power consumption.
Claims14
A light modulation element comprising:
- a first light modulation layer comprising nematic liquid crystals and a dichroic dye, wherein the first light modulation layer is in a scattering mode when a voltage is applied and
- a second light modulation layer comprising nematic liquid crystals and a dichroic dye, wherein the second light modulation layer is in a scattering mode when a voltage is applied,
- wherein the first light modulation layer and the second light modulation layer are disposed to overlap each other, wherein the first and the second light modulation layers are haze variable layers, wherein the light modulation element is switchable between a first state and a second state having different hazes based on an external energy applied and having a haze difference of 10% or more between the first state and the second state.
Dependencies are inferred from the claim text.