PRODUCTION OF POLARIZING PLATE

PROBLEM TO BE SOLVED: To provide a process for producing a polarizing plate of a resonance absorption effect type which is inexpensive, allows mass production and has a high extinction ratio and extremely high performance and reliability. SOLUTION: The process for producing the polarizing plate of the resonance absorption effect type having a form arranged with plural polarizing rod-shaped bodies 5 of a rod shape in a polarizing matrix layer 6 having translucency by directing the major axis direction thereof to a specified direction has a forming mold preparing stage for preparing a forming mold 4 having the rugged patterns corresponding to the arraying patterns of the polarizing rod-shaped bodies 5 of the rod shape, a resin layer rugged pattern forming stage for forming a resin layer 3 directly or indirectly on a substrate 2 and forming the rugged patterns on this resin layer 3 by pressing the forming mold 4 onto the resin layer 3, a polarizing rod-shaped body forming stage for forming the polarizing rod-shaped bodies 5 of the rod shape in an array state by utilizing the rugged patterns and a polarizing matrix layer forming stage for forming the polarizing matrix layer 6 having the translucency so as to embed the formed polarizing rod-shaped bodies of the rod shape.