LIGHT-DIFFUSING POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

Provided is a light-diffusing polarizing plate wherein a surface-treated film that has various functions is laminated on a light diffusion layer of a light diffusion film with an adhesive layer interposed therebetween. The light-diffusing polarizing plate is suppressed in inclusion of air bubbles in surface recesses and projections of the light diffusion layer even in cases where the light diffusion layer has a large surface roughness, and thus the light-diffusing polarizing plate is not susceptible to decoloration and has good visibility. Also provided is a liquid crystal display device which uses the light-diffusing polarizing plate. The light-diffusing polarizing plate comprises a polarizing film (101), a light diffusion film (102) that is arranged on the polarizing film (101), and a surface-treated film (103) that is arranged on the light diffusion film (102). The light diffusion film (102) has a light diffusion layer (106) that has a surface with a center line average surface roughness Ra of 0.1 µm or more but less than 1 µm, and the light diffusion layer (106) and the surface-treated film (103) are bonded with each other with an adhesive layer (104) interposed therebetween, said adhesive layer (104) having a storage modulus at 25°C of less than 1.0 × 106 Pa. The liquid crystal display device uses this light-diffusing polarizing plate.