| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polarized light conversion film which uses smectic liquid crystal, improves light use efficiency for a display such as a liquid crystal display and has high luminance improvement effect and superior productivity when used for reflection type and translucent type liquid crystal display elements, and to provide its manufacturing method, a polarizing element which is increased in light transmissivity by using the polarized light conversion film, and a liquid crystal display device whose luminance is improved by using the polarized light conversion film. <P>SOLUTION: Disclosed are the polarized light conversion film which has a polarized light separating layer separating incident light into two linear polarized light beams having mutually orthogonal electric field vectors and a polarized light converting layer converting the polarized light states of the linear polarized light beams, the polarized light separating layer being formed of a smectic liquid crystal layer in a focal conic alignment state; and its manufacturing method. Preferably, the polarized light separating layer has a base, which contains cellulose ester. Further, disclosed are the polarizing element having the polarized light conversion film, and a liquid crystal display device. <P>COPYRIGHT: (C)2007,JPO&INPIT |
