Light diffusing element, polarizing plate with light diffusing element, liquid crystal display apparatus using both, and manufacturing method for light diffusing element

摘要

A light diffusing element of the present invention includes: a matrix containing a resin component and an ultrafine particle component; and light diffusing fine particles dispersed in the matrix, wherein refractive indices of the resin component, the ultrafine particle component, and the light diffusing fine particles satisfy the below-indicated expression (1); and the light diffusing element comprises a concentration adjusted area, which is formed in an outer portion of a vicinity of a surface of each of the light diffusing fine particles, and in which a weight concentration of the resin component decreases and a weight concentration of the ultrafine particle component increases with increasing distance from the light diffusing fine particles: |np−nA|<|np−nB|  (1) where nA represents the refractive index of the resin component of the matrix, nB represents the refractive index of the ultrafine particle component of the matrix, and np represents the refractive index of the light diffusing fine particles.