Method for preparing polarizing plate locally having depolarization region, and polarizing plate prepared by using same

A method for manufacturing a polarizing plate, the method comprising:

• preparing a polarizing plate where a protection film is laminated on one surface of a polyvinyl alcohol-based polarizer dyed with at least one or more of iodine and dichromatic dyes;
• forming at least one depolarization region having single transmittance of 80% or more at a wavelength band in a range of 400 nm to 800 nm and arithmetic mean roughness (Ra) of 100 nm or less, by bringing a decoloring solution including 1 to 30 wt % of a decolorant into local contact with the other surface of the polarizer;
• and
• performing washing by using an acid solution,
• wherein the forming of the depolarization region is performed by a dispenser, inkjet, or gravure printing method.