发明名称 |
IN-PLANE SWITCHING LIQUID CRYSTAL DISPLAY COMPRISING BIAXIAL RETARDATION FILM WITH NEGATIVE REFRACTIVE PROPERTY AND BIAXIAL RETARDATION FILM WITH POSITIVE REFRACTIVE PROPERTY |
摘要 |
PURPOSE: An in-plane switching liquid crystal display device with biaxial retardation film of a negative refractive index characteristic and a positive refractive index characteristic is provided to control retardation between a retardation film and a polarizer protection film, thereby realizing a wide view angle and high durability under a rapid temperature change. CONSTITUTION: A refractive index ratio(NZ) of the biaxial first retardation film(40) is -2.0<NZ<-0.7. A ground axis of the biaxial first retardation film is orthogonal to an absorbing axis(21) of the second polarizing plate(20). A refractive index ratio of the biaxial second retardation film is 1.3<NZ<4. The ground axis of the biaxial second retardation film(50) is orthogonal to the absorbing axis of the second polarizing plate. In a protection film of a liquid crystal cell(30) of the first polarizing plate(10), a retardation value in thickness direction is in the range of 0 to 10 nm at 589 nm wavelength. A visibility omni-directional maximum transmittance satisfies compensation relation less than 0.2%. |
申请公布号 |
KR20090117641(A) |
申请公布日期 |
2009.11.12 |
申请号 |
KR20090039872 |
申请日期 |
2009.05.07 |
申请人 |
DONGWOO FINE-CHEM CO., LTD. |
发明人 |
KIM, BONG CHOON;LIM, SEUNG JOO |
分类号 |
G02F1/13363;G02F1/1335 |
主分类号 |
G02F1/13363 |
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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