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发明授权
CN101329497B 液晶投影仪 失效 - 权利终止

液晶投影仪
摘要：
本发明提供一种液晶投影仪，其能够使用高透过的辅助偏振片来谋求光出射侧偏振片的长寿命化，并且能够抑制黑显示时的颜色不均的发生和对比度下降。在液晶显示面板(1r、1g、1b)的光入射侧和光出射侧配置偏振片(2r、2g、2b、3r、3g、3b)，还在液晶显示面板与光出射侧偏振片之间配置高透过的辅助偏振片(4r、4g、4b)，并且保持该高透过辅助偏振片的基板(5r、5g、5b)是具有折射率各向异性的透明基板，而且表示折射率各向异性的光轴中的任一条光轴相对于与光的行进方向平行的面呈0.5°以内的倾斜。
摘要（英）：

The present invention provides a liquid crystal projector, which can use a highly transparent auxiliary polarization plate to buck for longevity of a polarization plate on the light emitting side, and can suppress color irregularity on a black screen and degradation of picture contrast. The light incidence side and the light emitting side of the liquid crystal display panel are provided with polarization plates (1r, 1g, and 1b), highly transparent auxiliary polarization plates (4r, 4g, and 4b) are arranged between the liquid crystal display panel and the light emitting side, and substrates (5r, 5g, and 5b) for holding the highly transparent auxiliary polarization plates are transparent substrates with aeolotropic refractive indexes, and any one light axis of aeolotropic axes for representing refractive indexes is inclined at an angle not more than 0. 5 degrees with respect to the face which is parallel to the direction of light propagation.

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