发明名称 |
OPTICAL LAMINATE, POLARIZATION LIGHT SOURCE DEVICE AND LIQUID CRYSTAL DISPLAY UNIT |
摘要 |
<p>An optical laminate comprising a cholesteric liquid crystal layer and a 1/4 wavelength plate laminated one upon another, characterized in that the 1/4 wavelength plate comprises at least one layer (layer A) consisting of a material having a positive intrinsic birefringence least one layer (layer B) consisting of a material having a negative intrinsic double refraction value, the orientations of molecular chains in the layer A and the layer B are equal to each other, and a variation in thickness of the 1/4 wavelength plate is below 5%; a polarization light source device provided with this optical laminate; and a liquid crystal display unit provided with this polarization light source device. The optical laminate which delivers an excellent brightness improving effect, is free from a variation in in-plane brightness, and ensures a long-term, stable brightness improving effect; and the polarized light source device and the liquid crystal display unit provided with this optical laminate are provided. <IMAGE></p> |
申请公布号 |
EP1517162(A1) |
申请公布日期 |
2005.03.23 |
申请号 |
EP20030733444 |
申请日期 |
2003.06.16 |
申请人 |
ZEON CORPORATION |
发明人 |
MURAKAMI, TOSHIHIDE;SATO, TAKASHI;ARAKAWA, KOHEI |
分类号 |
G02B5/30;(IPC1-7):G02B5/30 |
主分类号 |
G02B5/30 |
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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