| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an IPS (in-plane switching) liquid crystal display with significantly improved display quality and a viewing angle. <P>SOLUTION: The liquid crystal display comprises a liquid crystal cell having a first polarizing film, a first retardation region, a second retardation region and a liquid crystal layer all interposed between a pair of substrates, and a second polarizing film, in which the liquid crystal molecules are aligned parallel to the surface of the substrate during black display. Retardation Re in the first retardation region defined by Re=(nx-ny)×d using the refractive indices nx, ny (nx≥ny) in the plane, the refractive index nz in the thickness direction and the film thickness d ranges 60 to 200 nm. A value Nz defined by Nz=(nx-nz)/(nx-ny) is in the range over 0.8 to 1.5 or less. The first retardation region has a retardation layer obtained by stretching an alicyclic structure-containing polymer resin film. The refractive indices nx and ny in the plane in the second retardation region are substantially equal to each other, and retardation Rth in the thickness direction in the second retardation region defined by Rth=ä(nx+ny)/2-nz}×d ranges -200 to -50 nm. The transmission axis of the first polarizing film is parallel to the slow phase axis of the liquid crystal molecules during black display. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
