Lg Chem, Ltd

Hye Min Yu

Kyun Il Rah

Ji Young Kim

Sung Hyun Nam

Jin Yong Park

Taek Geun Nam

Eungki Lee

Jonghyun Jung

Moon Soo Park

Ji Hoon Park

Byoung Kun Jeon

Young Shin Lee

Seong Min Lee

Se Woo Yang

Ji Young Hwang

Dae Hee Lee

Byung Sun Lee

Su Young Ryu

Jung Woon Kim

Eun Suk Park

Jun Won Chang

Yoon Tae Hwang

Jong Hyun Jung

Kyun Ii Rah

Yong Sung Choi

A transmittance-variable layer and a transmittance-variable device including the same are disclosed herein. In some embodiments, a transmittance-variable device includes a polarization layer and a transmittance-variable layer disposed on the polarization layer, wherein the transmittance-variable layer includes a first base layer disposed on the polarization layer and a spacer fixed on a surface of the first base layer opposite to the polarization layer, and a second base layer facing the first base layer and spaced apart from the first base layer by the first spacer, wherein the first spacer maintains a gap between the first and second base layers, and a first light modulating material disposed in the gap.

Transmittance-variable device and use thereof

The present application relates to an optical device. The present application provides an optical device capable of varying transmittance, and such an optical device can be used for various applications such as eyewear, for example, sunglasses or AR (augmented reality) or VR (virtual reality) eyewear, an outer wall of a building or a sunroof for a vehicle.

Optical device with active liquid crystal element film having folded shape

The present specification relates to a method for manufacturing a polarizer and a polarizer manufactured by using the same, and more particularly, to a method for manufacturing a polarizer, which includes a cross-linking and elongating step using an aqueous solution including a polyvalent carboxylic acid compound and a boric acid compound, and a polarizer manufactured by using the same.

Method for manufacturing polarizer and polarizer manufactured by the same

An optical device is disclose herein. In some embodiments, an optical device includes an active liquid crystal element film, wherein the active liquid crystal element film comprises two base films, an active liquid crystal layer present between the two base films, wherein the active liquid crystal layer contains a liquid crystal compound and is capable of switching between a first oriented state and a second oriented state, and a polarizing coating layer, wherein the polarizing coating layer is present between one of the two base films and the active liquid crystal layer. The optical device is capable of varying transmittance, and can be used for various applications such as sunglasses, AR (augmented reality) or VR (virtual reality) eyewear, an outer wall of a building or a sunroof for a vehicle.

Optical device

The present specification relates to a method for manufacturing a polarizer, the method including: a step of dyeing at least one dye of iodine and dichroic dyes on a polyvinyl alcohol-based film; a first cross-linking step of cross-linking the polyvinyl alcohol-based film and the dye by using a first aqueous solution including a polyvalent carboxylic acid compound and a boron compound; a second cross-linking step of cross-linking the polyvinyl alcohol-based film and the dye by using a second aqueous solution including a polyvalent carboxylic acid compound and a boron compound; and a third cross-linking step of cross-linking the polyvinyl alcohol-based film and the dye by using a third aqueous solution including a polyvalent carboxylic acid compound, in which in the first cross-linking step and the second cross-linking step, stretching is performed along with cross-linking, and a polarizer manufactured by using the same.

Method for manufacturing polarizer and polarizer manufactured thereby

The present invention relates to a method for manufacturing a thin polarizer, the method including: a step of preparing an unstretched polyvinyl alcohol-based film having a thickness of 20 &#x3bc;m or less, in which a strength applied to stretch the film by 6 times is 4 N or more; and a single stretching step of forming a stretched polyvinyl alcohol-based film having a thickness of 10 &#x3bc;m or less by stretching the unstretched polyvinyl alcohol-based film solely, and a thin polarizer manufactured by using the same.

Method for manufacturing thin polarizer, and thin polarizer manufactured using same

The present invention relates to a method for manufacturing a thin polarizer, the method comprising the steps of: forming an auxiliary support on both ends in the transverse direction (TD) of an unstretched polyvinyl alcohol-based film; and wet-stretching the polyvinyl alcohol-based film, which has the auxiliary support formed thereon, in the machine direction (MD) of the polyvinyl alcohol-based film, in such that the thickness of the polyvinyl alcohol-based film is 10 &#x3bc;m or less.

Method for manufacturing thin polarizer, thin polarizer manufactured using same, and polarizing plate

The present invention relates to a laminate including an unstretched polymer film; and an unstretched polyvinyl alcohol-based film attached to at least one surface of the polymer film, and a preparing method for a thin polarizer using the laminate.

Laminate, method for preparing thin polarizer by using same, thin polarizer, and polarizing plate

There are provided a substrate film, a laminate, and method of manufacturing a polarizing film. The present application provides a substrate film capable of effectively manufacturing a polarizing film having a thickness of about 10 &#x3bc;m or less, about 8 &#x3bc;m or less, about 7 &#x3bc;m or less, about 6 &#x3bc;m or less, or about 5 &#x3bc;m or less and having an excellent function such as polarization performance, a laminate, and a method of manufacturing the same. According to the invention, it is possible to prevent tearing, curling, or the like from occurring in the elongation process and manufacture a polarizing film by easily elongating a polarization material such as a PVA-based resin.

Growing community of inventors

Daejeon, South Korea

Hye Min Yu