Lg Chem, Ltd

Nikolay Malimonenko

Byoung Kun Jeon

Jeong Su Yu

Sergey Belyaev

Jun Won Jang

Jun Won Chang

Sang Choll Han

Sang-Choll Han

Byoung-Kun Jeon

Serey Belyaev

Soo Jin Jang

Yu Jeong-Su

Jeong-Su Yu

Jun-Won Jang

Soo-Jin Jang

This invention provides a vertically aligned liquid crystal display, including a first polarizing plate and a second polarizing plate having absorption axes perpendicular to each other and a vertically aligned panel provided therebetween and including vertically aligned liquid crystals having negative dielectric anisotropy, in which a +A-film and a +C-film are provided between the first polarizing plate and the vertically aligned panel, the +C-film is positioned between the first polarizing plate and the +A-film, and the optic axis of the +A-film is parallel to or perpendicular to the absorption axis of the first polarizing plate. According to this invention, the contrast of the vertically aligned liquid crystal display can be improved at surface-facing angle and tilt angle thereof and the color shift depending on the viewing angle in a dark state can be minimized, thus greatly increasing the viewing angle range of the vertically aligned liquid crystal display.

Vertically aligned liquid crystal display having a wide viewing compensation film using +A-film and +C-film

Disclosed is an in-plane switching liquid crystal display. The in-plane switching liquid crystal display uses at least one A-plate and adjusts the optical axis direction and the retardation value of the A-plate, thereby improving the contrast characteristic at a front and at a predetermined inclination angle of the in-plane switching liquid crystal display while minimizing a color shift according to viewing angles in the black state.

In-plane switching liquid crystal display including viewing angle compensation film using +A-plate

Disclosed is an in-plane switching liquid crystal display, which uses a positive biaxial retardation film while adjusting an optical axis direction and the retardation value of the positive biaxial retardation film. The in-plane switching liquid crystal display improves the contrast characteristic at a predetermined angular position as well as at a front position thereof, so a color shift according to the viewing angle in the black state is minimized.

In-plane switching liquid crystal display comprising compensation film for angular field of view using positive biaxial retardation film

Disclosed herein is an IPS-LCD using two sheets of negative (&#x2212;) biaxial retardation films and one +C-plate. The IPS-LCD has a superior contrast ratio at the surface-facing angle and tilt angles and undergoes a minimal color change with viewing angles in a black state, thereby providing a wider viewing angle.

IPS mode liquid crystal display using two sheets of biaxial negative retardation film and a plate

Disclosed is a complex light compensation C plate including at least two C plates representing different dispersion ratio values, respectively. The complex light compensation C plate improves a contrast characteristic of a liquid crystal display device at various viewing angles and has a broadband wavelength dispersion characteristic capable of minimizing color variation depending on various viewing angles in a black state of an LCD.

Complex light-compensation C plate with two or more of C plates different in dispersion ratio value and liquid crystal display using the same

The present invention relates to an in-plane switching liquid crystal display comprising a negative biaxial retardation film and a positive C-plate, as viewing-angle compensation films. By the use of such viewing-angle compensation films, the contrast characteristics at the front side and inclination angle of the in-plane switching liquid crystal display can be improved and color shift with viewing angle in the dark state can be minimized.

In-plane switching liquid crystal display comprising compensation film for angular field of view using negative biaxial retardation film and (+) C-plate

Disclosed is an in-plane switching liquid crystal display. The in-plane switching liquid crystal display improves the contrast characteristic at a front and at a predetermined inclination angle thereof by using a +A-plate and a +C-plate while minimizing a color shift according to viewing angles in the black state.

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Daejeon, South Korea

Nikolay Malimonenko