Lg Chem, Ltd

Sung-Hyun Nam

Kyun-Il Rah

Jong-Hyun Jung

Hye-Min Yu

Nam-Jeong Lee

Eun-Mi Seo

Ki-Ok Kwon

Kyun Il Rah

Hyuk Yoon

Seung-Hee Nam

Moon-Soo Park

Ji-Young Kim

Byung-Sun Lee

Dae-Woong Lee

Kyung-Seop Noh

Jun-Geun Um

Ki-Su Ro

Byoung-Ho Jeon

Bae-Kun Shin

Won-Hee Kim

Yoo-Young Jung

Beom-Seok Kim

Se-Woo Yang

Kyun-II Rah

Sei-Jung Park

Kyun-Ii Rah

Yoon-Tae Hwang

Dong-Man Cho

The present invention relates to a method of manufacturing a polarizer, including: preparing a polyvinyl alcohol-based polarizer dyed with one or more of iodine and dichromatic dyes; and forming a depolarization region having simple substance transmittance of 80% or more in a wavelength band of 400 nm to 800 nm by bringing a decoloring solution including 1 wt % to 30 wt % of a decolorant into local contact with some regions of the polarizer, and a polarizer manufactured using the same.

Preparing method for polarizer having locally depolarized area, polarizer and polarizing plate manufactured by using the same

The present disclosure relates to a polarizing plate including an adhesive layer, a primer layer and a polyethylene terephthalate film which are sequentially formed on at least one side of a polarizer, wherein the adhesive layer in the present disclosure is formed by an active energy ray-curable adhesive including a first epoxy compound of which a homopolymer has a glass transition temperature of 120&#xb0; C. or higher, a second epoxy compound of which a homopolymer has a glass transition temperature of 60&#xb0; C. or lower, and a cationic photopolymerization initiator, and wherein the primer layer is formed by a primer composition including one or more binder resins selected from the group consisting of polyester and polyvinyl alcohol-based resins, and one or more cross-linking agents selected from the group consisting of acrylic cross-linking agents, epoxy-based cross-linking agents and polyvinyl alcohol-based cross-linking agents.

Polarizing plate and image display device including the same

There is provided a stretched laminate formed by stretching a laminate including: a non-stretched thermoplastic polyurethane film; and a non-stretched polyvinyl alcohol-based film attached to at least one surface of the thermoplastic polyurethane film, wherein the polyvinyl alcohol-based film has a thickness of 10 &#x3bc;m or less after stretching. In addition, there are provided a method of manufacturing a thin polarizer using the stretched laminate, a thin polarizer manufacturing by the method, and a polarizing plate including the thin polarizer.

Stretched laminate, method of manufacturing thin polarizer, thin polarizer manufactured by the method, and polarizing plate including the thin polarizer

There is provided a stretched laminate having superior optical characteristics, easily separable from a base film, and usable for manufacturing a thin polarizer. In addition, there are provided a method of manufacturing a thin polarizer having superior optical characteristics by using the stretched laminate, a thin polarizer manufactured by the method, and a polarizing plate including the thin polarizer.

There is provided a method of manufacturing a thin polarizing plate including: forming a film laminate by attaching a non-stretched polyvinyl alcohol (PVA)-based film to a non-stretched base film, using attractive force therebetween or using an adhesive; stretching the film laminate; attaching a first protective film to the PVA-based film of the stretched film laminate; and separating the PVA-based film having the first protective film attached thereto from the base film.

Thin polarizing plate and method of manufacturing the same

The present invention relates to a method of manufacturing a thin polarizer, including: forming a film laminate by attaching a polyvinyl alcohol-based film to at least one surface of a polymer film by using attraction force or an adhesive; swelling the film laminate so that a degree of swelling of the polyvinyl alcohol-based film is 0.36 to 0.44; dyeing at least one of iodine and a dichromatic dye on the film laminate; and stretching the film laminate.

Thin polarizer with excellent optical properties, manufacturing method therefor and polarizing plate including same

There are provided a thin film polarizer having superior optical properties and a method of manufacturing the same. The thin film polarizer includes: forming a film laminate by attaching a non-stretched polyvinyl alcohol (PVA)-based film to at least one surface of a thermoplastic polyurethane film, using attractive force therebetween or using an adhesive; stretching the film laminate at a temperature of 45&#xb0; C. to 55&#xb0; C.; and separating the PVA-based film from the thermoplastic polyurethane film.

Thin film polarizer having superior optical properties, manufacturing method thereof, and polarizing plate and display device including the same

Provided are a method for preparing a thin polarizer, including forming a film laminate by bonding a non-stretched polyvinyl alcohol-based film having a thickness of 10 to 60 &#x3bc;m to at least one surface of a non-stretched base film using an adhesive including an amine-based metal compound crosslinking agent and a polyvinyl alcohol-based resin containing an acetoacetyl group, and stretching the film laminate so as to allow the polyvinyl alcohol-based film to have a thickness of 10 &#x3bc;m or less, and a thin polarizer manufactured through the same.

Preparing method for thin polarizer, thin polarizer and polarizing plate comprising the same

A polarizing plate, a fabrication method thereof, and a display device using the same are provided. The polarizing plate includes a polarizing element, a first adhesive layer formed on one surface of the polarizing element, a second adhesive layer formed on the other surface of the polarizing element, a protective film attached to an upper portion of the first adhesive layer, a bonding layer attached to a lower portion of the second adhesive layer, and a luminance enhancement film attached to the bonding layer.

Polarizing plate, fabrication method thereof, and display device using the same

The present disclosure relates to a method for preparing a thin polarizer, and a thin polarizer prepared using the same, the method including forming a film laminate by attaching a non-stretched polyvinyl alcohol (PVA) film having a thickness of 10 to 60 &#x3bc;m to at least one surface of a non-stretched base film, using attractive force therebetween; and stretching the film laminate such that the thickness of the PVA film is 10 &#x3bc;m or less.

Provided are a high luminance polarizing plate including a polarizing plate, a &#x3bb;/2 retardation film having an in-plane retardation value ranging from 250 nm to 280 nm in a wavelength range of 450 nm to 650 nm that is laminated on one side of the polarizing plate, and a brightness enhancement film laminated on the &#x3bb;/2 retardation film, a method of manufacturing the same, and a display device using the high luminance polarizing plate.

High luminance polarizing plate, method of manufacturing the same, and display using the polarizing plate

A method of manufacturing a thin film polarizer includes forming a film laminate by alternately bonding two or more non-oriented polymer films and two or more non-oriented polyvinyl alcohol-based films to each other using attractive force or an adhesive layer, orienting the film laminate so that the polyvinyl alcohol-based film has a thickness of 10 &#x3bc;m or less after the orienting of the film laminate, and separating the polymer films and the polyvinyl alcohol-based films of the oriented film laminate from each other.

Thin film polarizer, method of manufacturing the same, and polarizing plate and display device including the same

Provided are a circular polarizer and a reflective liquid crystal display including the same. The circular polarizer includes a polarizer comprising a polarizing film in which an absorption axis has an angle of about 85&#xb0; to about 95&#xb0; with respect to a liquid crystal alignment direction of a liquid crystal cell, where, in CIE coordinates, a color 'a' is about &#x2212;1 to about &#x2212;0.6 and a color 'b' is about 0.3 to about 2.5 and a &#xbc; wavelength plate in which an optical axis has an angle of about 130&#xb0; to about 140&#xb0; with respect to the liquid crystal alignment direction of the light crystal cell. When the circular polarizer is used, the visibility and color tone of the reflective liquid crystal display may be improved.

Circular polarising plate and a reflective liquid-crystal display device comprising the same

The present invention provides an optical film including a copolymer that includes (a) an alkene monomer, (b) an acrylate monomer, and (c) at least one of an unsaturated organic acid monomer and an unsaturated acid anhydride monomer having one or more double bonds, a protective film for a polarizer film, and a polarizer plate and an image display device using the same.

Growing community of inventors

Daejeon, South Korea

Sung-Hyun Nam