Patent ID: 9360707
Filing Date: 2016-06-07
CPC Classification: G02B,G02F

Claim Text:
1. An IPS mode liquid crystal display device comprising an IPS mode liquid crystal cell and a first polarizing plate and a second polarizing plate, which sandwich the IPS mode liquid crystal cell, wherein the first polarizing plate is positioned at the viewing side of the IPS mode liquid crystal cell and is provided from the viewing side with a first polarizing plate protection film, a polarizer, and a second polarizing plate protection film, the second polarizing plate is positioned at the reverse side from the viewing side of the IPS mode liquid crystal cell and is provided from the viewing side with a third polarizing plate protection film, a polarizer, and a fourth polarizing plate protection film, the second polarizing plate protection film has a film thickness of 30 to 60 μm and has a structure resulting from laminating a first optically anisotropic layer comprising a polymer having a positive intrinsic birefringence, and a second optically anisotropic layer comprising a polymer having a negative intrinsic birefringence, and the film thickness of the first polarizing plate protection film, the third polarizing plate protection film, and the fourth polarizing plate protection film are each 15-25 μm.