Polarizer, one-side-protected polarizing film, pressure-sensitive-adhesive-layer-attached polarizing film, image display device, and method for continuously producing same

Abstract

A polarizer according to the patent invention is configured to contain boric acid and a polyvinyl alcohol-based resin, to have a thickness of 10 μm or less, and to have an optical property satisfying the condition represented by the expression: P>−(100.929T-42.4−1)×100 (when T<42.3) or P≥99.9 (when T≥42.3), wherein T represents the single-body transmittance and P represents the polarization degree. In addition, a boric acid content (a) measured from one side of the polarizer, the one side to be provided with the pressure-sensitive adhesive layer, is less than a boric acid content (b) measured from the other side. The polarizer according to the patent invention can reduce defects due to through cracks and nano-slits even when the polarizer has predetermined optical properties and a thickness of 10 μm or less.

Dependencies are inferred from the claim text.