Polarizing plate and a display device using the same

To provide a polarizing plate capable of suppressing the occurrence of color unevenness in the panel display of the display device. A laminate of a substrate layer containing a hydrophilic polymer layer and the thermoplastic resin is being stretched, polarized light having a stretched laminate wherein said hydrophilic polymer layer on the dichroic substance is adsorbed in the plate is controlled to change the curling under two environments where the temperature and humidity are different has a value less than a predetermined value.