发明名称 |
Bi-axial retardation compensation film and vertically aligned liquid crystal display using the same |
摘要 |
The present invention relates to a vertically aligned LCD (VA-LCD) employing a bi-axial retardation compensation film, in which an in-plain refractive index (nx, ny) and a thickness refractive index (nz) of the film is nx>ny>nz. The film has a reversed wavelength dispersion in which retardation is increased in proportion to the increase of a wavelength in the range of visible rays and has a normal wavelength dispersion in which an absolute value of the thickness retardation is decreased in proportion to the increase of a wavelength in the range of visible rays. The VA-LCD cell having a retardation compensation characteristic is comprised by arranging a bi-axial retardation compensation film between the vertically aligned panel and a upper and lower polarizing plate. The VA-LCD of the present invention improves contrast characteristics on a front surface and at a tilt angle and minimizes coloring in a black state according to the tilt angle. |
申请公布号 |
US8237898(B2) |
申请公布日期 |
2012.08.07 |
申请号 |
US20100840172 |
申请日期 |
2010.07.20 |
申请人 |
JEON BYOUNG-KUN;BELYAEV SERGEY;YU JEONG-SU;LG CHEM, LTD. |
发明人 |
JEON BYOUNG-KUN;BELYAEV SERGEY;YU JEONG-SU |
分类号 |
G02F1/1335;G02F1/13363;G02F1/139 |
主分类号 |
G02F1/1335 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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