Polarizing plate and display device

Abstract

The present invention relates to a polarizing plate comprising: a polarizer; an optical laminate formed on one side of the polarizer and including a polymer substrate and an anti-glare layer; and a thermoplastic resin layer formed on the other side of the polarizer and including a (meth)acrylate-based resin, and a liquid panel and display device comprising the polarizing plate.

Description

technical field

[0001] Cross References to Related Applications

[0002] This application claims priority or benefit from Korean Patent Application No. 10-2019-0004838 filed with the Korean Intellectual Property Office on January 14, 2019, the disclosure of which is incorporated herein by reference in its entirety.

[0003] The present disclosure relates to a polarizing plate and a display device. Background technique

[0004] In an image display device such as an organic light emitting display (OLED) or a liquid crystal display (LCD), it is necessary to prevent a decrease in contrast and a decrease in visibility due to reflection of external light or reflection of an image. For this reason, an optical laminated film such as an anti-reflection film is formed on the surface of the image display device to reduce reflection of external light or reflection of an image by utilizing light scattering and optical interference.

[0005] For example, in liquid crystal display devic...

Examples

preparation example 1 to 3 and comparative preparation example 1 to 3

[0104] [Preparation Examples 1 to 3 and Comparative Preparation Examples 1 to 3: Preparation of Optical Laminates]

[0105] (1) Preparation of coating composition for forming anti-glare layer

[0106] The components shown in Table 1 below were mixed to prepare a coating composition for forming an antiglare layer.

[0107] (2) Preparation of optical laminate

[0108] Each of the above-prepared coating solutions for forming an anti-glare layer was coated on the polymer substrate described in Table 1 below by a #12mayer rod, and then dried at a temperature of 40°C for 2 minutes, followed by UV curing to form Anti-glare layer (coating thickness 4 μm). When performing UV curing, the UV lamp uses H bulbs, the curing reaction is carried out under a nitrogen atmosphere, and the amount of UV light irradiated during curing is 150mJ / cm 2 .

[0109] [Table 1]

[0110]

[0111] TMPTA: Trimethylolpropyl Triacrylate

[0112] PETA: pentaerythritol triacrylate

[0113] UA-306T: React...

Embodiment 1 to 3 and comparative example 1 to 3

[0125] [Examples 1 to 3 and Comparative Examples 1 to 3: Preparation of polarizing plate]

[0126] A polyvinyl alcohol polarizer (thickness: 25 μm, manufacturer: LG Chem) was bonded to the polymer base side of the optical laminates prepared in each Preparation Example and Comparative Preparation Example using a UV adhesive.

[0127] Then, a 40 μm thick acrylate resin film (LG Chem product, 40 μm polymethylmethacrylate base) was bonded to the other surface of the polyvinyl alcohol polarizer using a UV adhesive to prepare a polarizing plate.

experiment example 1 to 5

[0128] [Experimental Examples 1 to 5: Measurement of Physical Properties of Optical Laminates]

technical field

[0001] Cross References to Related Applications

[0002] This application claims priority or benefit from Korean Patent Application No. 10-2019-0004838 filed with the Korean Intellectual Property Office on January 14, 2019, the disclosure of which is incorporated herein by reference in its entirety.

[0003] The present disclosure relates to a polarizing plate and a display device. Background technique

[0004] In an image display device such as an organic light emitting display (OLED) or a liquid crystal display (LCD), it is necessary to prevent a decrease in contrast and a decrease in visibility due to reflection of external light or reflection of an image. For this reason, an optical laminated film such as an anti-reflection film is formed on the surface of the image display device to reduce reflection of external light or reflection of an image by utilizing light scattering and optical interference.

[0005] For example, in liquid crystal display devic...

Examples

preparation example 1 to 3 and comparative preparation example 1 to 3

[0104] [Preparation Examples 1 to 3 and Comparative Preparation Examples 1 to 3: Preparation of Optical Laminates]

[0105] (1) Preparation of coating composition for forming anti-glare layer

[0106] The components shown in Table 1 below were mixed to prepare a coating composition for forming an antiglare layer.

[0107] (2) Preparation of optical laminate

[0108] Each of the above-prepared coating solutions for forming an anti-glare layer was coated on the polymer substrate described in Table 1 below by a #12mayer rod, and then dried at a temperature of 40°C for 2 minutes, followed by UV curing to form Anti-glare layer (coating thickness 4 μm). When performing UV curing, the UV lamp uses H bulbs, the curing reaction is carried out under a nitrogen atmosphere, and the amount of UV light irradiated during curing is 150mJ / cm 2 .

[0109] [Table 1]

[0110]

[0111] TMPTA: Trimethylolpropyl Triacrylate

[0112] PETA: pentaerythritol triacrylate

[0113] UA-306T: React...

Embodiment 1 to 3 and comparative example 1 to 3

[0125] [Examples 1 to 3 and Comparative Examples 1 to 3: Preparation of polarizing plate]

[0126] A polyvinyl alcohol polarizer (thickness: 25 μm, manufacturer: LG Chem) was bonded to the polymer base side of the optical laminates prepared in each Preparation Example and Comparative Preparation Example using a UV adhesive.

[0127] Then, a 40 μm thick acrylate resin film (LG Chem product, 40 μm polymethylmethacrylate base) was bonded to the other surface of the polyvinyl alcohol polarizer using a UV adhesive to prepare a polarizing plate.

experiment example 1 to 5

[0128] [Experimental Examples 1 to 5: Measurement of Physical Properties of Optical Laminates]

Images