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US 9,958,742 B2Granted
Optical element with conductive composite layer
AssigneeLG Chem, Ltd.
InventorsSung Joon Min, Eun Jung Lim, Dong Hyun Oh, Jung Woon Kim, Jung Sun You, Jin Hong Kim
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Abstract
The present application relates to an optical element. The exemplary optical element may have a variable transmittance by whether an external signal is applied or not. Also, since the optical element may apply the external signal by using a composite layer having a low transmittance to light in an infrared region, the optical element may block heat, and save energy. Such an optical element may be usefully employed in various optical devices, for example, a sunroof.
Claims20
An optical element, comprising:
- a polarizing layer;
- a liquid crystal layer formed on the polarizing layer and including a liquid crystal compound and an anisotropic dye;
- and
- a composite layer adjacent to the liquid crystal layer, including a first oxide layer, a metal layer and a second oxide layer, which are sequentially formed, and disposed in order that an alignment direction of the liquid crystal compound of the liquid crystal layer is changed by a signal applied by the composite layer.
1 more element
Dependencies are inferred from the claim text.