Samsung Sdi Co., Inc.

Cheil Industries Inc.

Ki Ho Park

Mun Bo Ko

A Ra Jo

Bae Wook Lee

Yong Woon Kim

Eun Kyeong Seo

Min Jung Kim

Boem Deok Lee

Lee Hwa Song

Jung Kyu Lee

The present invention relates to an optical film including a polarizing film, and a manufacturing method therefor. The optical film of the present invention can include the polarizing film having an orthogonal transmittance of less than 0.5% in a wavelength of a range of 405-735 nm.

Optical film, liquid crystal display device including same, and manufacturing method therefor

A polarizing plate for an OLED includes a polarizer, a protective film on an upper side of the polarizer, and a stack structure of a &#x3bb;/4 reverse dispersion retardation film and a positive C plate on a lower side of the polarizer. An optical display includes the polarizing plate. The polarizing plate minimizes the difference in retardation at all lateral viewing angles, and can therefore reduce or suppress lateral color shift causing the viewer to see different colors, depending on the lateral viewing angle.

Polarizing plate for OLED and optical display including the same

A polarizing plate includes a polarizer having absorption and transmission axes, a protective film on an upper surface of the polarizer, a half-wavelength (&#x3bb;/2) retardation film on a lower surface of the polarizer, an adhesive layer on a lower surface of the half-wavelength (&#x3bb;/2) retardation film, and a quarter-wavelength (&#x3bb;/4) retardation film on a lower surface of the adhesive layer. An absolute orthogonal b-coordinate value based on a CIELAB color coordinate system of the polarizing plate may be approximately 3 or less when the polarizing plate is stacked with a reference polarizing plate having a degree of polarization of at least 99.9% such that an angle between the absorption axis of the polarizer and an absorption axis of a polarizer of the reference polarizing plate or an angle between the transmission axis of the polarizer and a transmission axis of the polarizer of the reference polarizing plate is 90&#xb0;.

Polarizing plate, method for preparing the same, and optical display apparatus including the same

Growing community of inventors

Uiwang-si, South Korea

Ki Ho Park