Samsung Electronics Co., Ltd.

Cheil Industries Inc.

Kyu Yeol In

Moon Yeon Lee

Kyoung Ah Oh

Myung Sup Jung

Hyung Jun Kim

Won Cheol Jung

Ji-Hoon Lee

Hee-kyung Kim

Woo Joong Kim

Jong Hoon Won

Kook Min Han

Hee Kyung Kim

Sang Ah Gam

Sang Yoon Lee

Jong Jin Park

Eun Kyung Lee

Sang-Yoon Lee

Jae Hyun Kim

Bon Won Koo

Myung-Sup Jung

Jung Seok Hahn

Hyun Sik Moon

Won-Cheol Jung

Hyeon Ho Choi

Jong-Hoon Won

Woo Jung Kim

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 polymer including a repeating unit A including a repeating unit represented by the following Chemical Formulas 1 to 3, or a combination thereof; and a repeating unit B derived from a monomer having an unsaturated bond copolymerizable with the repeating unit A, wherein the optical film has a short wavelength dispersion of an in-plane phase-difference value (R) (450 nm/550 nm) ranging from about 0.81 to about 1.20, and a long wavelength dispersion of an in-plane phase-difference value (R) (650 nm/550 nm) ranging from about 0.90 to about 1.18: wherein, in Chemical Formulas 1 to 3, the variables Rto Rare defined herein.

Optical film and display device including 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

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.

Polarizing plate for OLED and OLED display including the same

A polymer for an optical film including: a repeating unit A including a repeating unit represented by the following Chemical Formula 1; and a repeating unit B derived from a monomer including an unsaturated bond copolymerizable with the repeating unit A: 

Polymer for optical film, method of preparing same, and optical film including same

Disclosed are a copolymer of a perfluoropolyether derivative and a photosensitive polymer, a composition for forming banks comprising the copolymer, and a method for forming banks using the composition. Also disclosed is an organic thin film transistor including the composition and an electronic device including the organic thin film transistor. The use of the copolymer may enable the formation of banks by a solution coating process. Because an organic thin film transistor including banks formed by the method may be fabricated without any degradation in the characteristics of the organic thin film transistor, improved electronic properties may be exhibited.

Perfluoropolyether copolymer composition for forming banks

An organic thin film transistor may comprise an organic semiconductor layer having surface-modified carbon nanotubes and an electrically-conductive polymer. The surfaces of the carbon nanotubes may be modified with curable functional groups, comprising oxirane groups and anhydride groups. A room-temperature solution process may be used to provide a relatively uniform and relatively highly-adhesive organic semiconductor layer in a simple and economical manner. Additionally, the organic thin film transistor having the organic semiconductor layer may have relatively high charge carrier mobility and relatively low threshold voltage.

Growing community of inventors

Seoul, South Korea

Kyu Yeol In