Cheil Industries Inc.

Samsung Electronics Co., Ltd.

Samsung Sdi Co., Inc.

Kyoung Ah Oh

Moon Yeon Lee

Kyu Yeol In

Myung Sup Jung

Hyung Jun Kim

Ji-Hoon Lee

Hee-kyung Kim

Won Cheol Jung

Hee Kyung Kim

Mun Bo Ko

Sang Ah Gam

Jin Joo Kim

Eun Kyung Lee

Jae Hyun Kim

Dong Yoon Shin

Tae Joon Park

Eun Su Park

Won-Cheol Jung

Ri Ra Jung

Eun Hwan Jeong

Hyeon Ho Choi

Woo Joong Kim

Yong Woon Kim

Su Yeon Lee

Na Young Kim

Woo Jung Kim

Provided are a polarizing plate for a light emitting display device and the light emitting display device including same, the polarizing plate for a light emitting display device having a first adhesive film, a second protective layer, a polarizer, and a first protective layer sequentially laminated therein. The polarizing plate includes a UV absorber; and an as value of the polarizing plate is about &#x2212;2.0 to about &#x2212;20.0, and a bs value of the polarizing plate is about 3.0 to about 30.0.

Polarizing plate for light emitting display device and light emitting display device including same

An optical film includes: a liquid crystal coating; and a base layer on the liquid crystal coating, wherein the liquid crystal coating has reversed wavelength dispersion and in-plane retardation for a reference wavelength ranging from 126 nm to 153 nm, and the base layer has in-plane retardation ranging from about 0 to about 50 nm and out-of-plane retardation ranging from about 0 nm to about 100 nm.

Multilayered optical film and display device including optical film

An optical film includes: a first optical phase retardation layer having a relation nx&#x2265;ny&#x2265;nz; a second optical phase retardation layer disposed under the first optical phase retardation layer and having a relation nx&#x2248;ny&#x3c;nz; and a third optical phase retardation layer disposed on the first optical phase retardation layer and having a relation nx&#x2248;ny&#x3c;nz, where nz(i=1, 2, 3) denotes a refractive coefficient in a thickness direction of the i-th optical phase retardation layer, and nxand nydenote refractive coefficients in two orthogonal directions in a plane substantially perpendicular to the thickness direction of the i-th optical phase retardation layer.

Multilayered optical film and display device

An optical film includes: a polarization layer; a first phase retardation layer having an optic axis at an angle in a range from about 17 degrees to about 27 degrees or from about &#x2212;27 degrees to about &#x2212;17 degrees with respect to a transmission axis of the polarization layer; and a second phase retardation layer having an optic axis at an angle in a range from about 85 degrees to about 95 degrees with respect to the transmission axis of the polarization layer. The polarization layer, the first phase retardation layer, and the second phase retardation layer are deposited in sequence, the first phase retardation layer is a half-wave plate, the second phase retardation layer is a quarter-wave plate, and out-of-plane retardation values of the first phase retardation layer and the second phase retardation layer for incident light having the standard wavelength have opposite signs.

Multilayered optical film, manufacturing method thereof, and display device

An optical film including a polarization layer, a first phase delay layer positioned on a side of the polarization layer and including a liquid crystal, and a second phase delay layer positioned on a side of the first phase delay layer, where the first phase delay layer has an optical axis defining an angle of about 17 degrees to about 27 degrees or about &#x2212;27 degrees to about &#x2212;17 degrees relative to a transmissive axis of the polarization layer, and the second phase delay layer has an optical axis defining an angle of about 85 degrees to about 95 degrees relative to the transmissive axis of the polarization layer.

Optical film, manufacturing method thereof, and display device including the same

A polarizing plate includes a polarizer; a first retardation film formed on a lower surface of the polarizer and having an in-plane retardation (Ro) at a wavelength of about 550 nm of about 180 nm to about 220 nm; and a second retardation film formed on a lower surface of the first retardation film and having an in-plane retardation (Ro) at a wavelength of about 550 nm of about 50 nm to about 80 nm. The first and second retardation films have thickness direction retardations (Rth) of opposite signs at a wavelength of about 550 nm. An optical display includes the polarizing plate.

Polarizing plate and optical display including the same

Disclosed is a polymer comprising a repeating unit represented by Chemical Formula 1, or a polymer comprising a repeating unit represented by Chemical Formula 2: wherein R, R, x and y are as defined herein.

Polymer for optical film, and optical film including same

An embodiment of an optical film includes: a polarization layer; a first phase retardation layer; a second phase retardation layer; and a light blocking layer disposed between the first phase retardation layer and the second phase retardation layer and extending along a circumference of the second phase retardation layer, wherein the polarization layer is disposed on the first phase retardation, the first phase retardation layer is disposed on the second phase retardation layer, an in-plane retardation value of the first phase retardation layer at a standard wavelength of about 550 nanometers is in a range from about 240 nanometers to about 300 nanometers, and an in-plane retardation value of the second phase retardation layer at the standard wavelength is in a range from about 110 nanometers to about 160 nanometers.

The liquid crystal display of the present invention includes: a liquid crystal panel including vertical alignment liquid crystals encapsulated between a first substrate and a second substrate; a first compensation layer stacked on one side of the first layer; a first polarizing layer stacked on one side of the first compensation layer; a second compensation layer stacked on one side of the second substrate; and a second polarizing layer stacked on one side of the second compensation layer, wherein the first compensation layer includes a polyimide copolymer, and the polyimide copolymer is a copolymer of a monomer mixture including maleimide compounds and aromatic vinyl compounds. The liquid crystal display provides significantly improved lateral viewing angle.

Liquid crystal display

An optical compensation film includes: a first layer having positive birefringence; a second layer on the first layer and having negative birefringence; and a third layer on the second layer and having positive birefringence. A retardation value of the optical compensation film for incident light having a wavelength of about 550 nm is about 135 nm to about 145 nm, and a ratio of a thickness of the first layer or of the third layer to a thickness of the second layer is about 1.1 to 2.2.

Optical compensation film

A polarizing plate for an OLED and an OLED display, the polarizing plate including a polarizer; a first retardation layer on a lower side of the polarizer; a second retardation layer on a lower side of the first retardation layer; and a pattern layer on a lower side of the second retardation layer, the pattern layer including a plurality of engraved patterns on a lower side thereof.

Growing community of inventors

Seoul, South Korea

Kyoung Ah Oh