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US 2012/0257128 A1Published application
Optical device
AssigneeLG Chem, Ltd.
InventorsEun Mi SEO, Sin Young KIM, Kyun Il RAH, Moon Soo PARK, Seung Hun CHAE
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Abstract
An optical device and a stereoscopic image display device are provided. The optical device according to one embodiment may be a light-dividing device, for example, a device that can divide incident light into at least two kinds of light having different polarized states. For example, the optical device can be used to realize a stereoscopic image.
Claims21
An optical device, comprising:
- an active energy ray-curable adhesive layer comprising a cationically polymerizable compound;
- and
- a polarizer and a liquid crystal layer which are attached to each other by the adhesive layer,
- wherein the difference between the refractive index in the in-plane slow axis direction of the liquid crystal layer and the refractive index in the in-plane fast axis direction of the liquid crystal layer is from 0.05 to 0.2, and the liquid crystal layer has a thickness in a range from 0.5 μm to 2.0 μm;
- and
- wherein the liquid crystal layer comprises a multifunctional polymerizable liquid crystal compound and a monofunctional polymerizable liquid crystal compound, and the monofunctional polymerizable liquid crystal compound comprised in the liquid crystal layer is in an amount of greater than 0 parts by weight and not more than 100 parts by weight, relative to 100 parts by weight of the multifunctional polymerizable liquid crystal compound.
3 more elements
Dependencies are inferred from the claim text.