Polarizing plate

The present invention provides a polarizing plate capable of suppressing decoloration in a high-temperature environment even if an end surface is in contact with an adhesive. The polarizing plate includes a cured product layer of a polymerizable liquid crystal compound and a dichroic dye oriented in the cured product layer. The outline of the polarizer in plan view includes a linear portion, and the straightness of the linear portion is 0.10 mm or less. 本发明提供一种即使端面与粘合剂接触也能够抑制高温环境下的脱色的偏振片。偏振片包含聚合性液晶化合物的固化物层和在固化物层中取向的二色性色素。偏振片的俯视时的轮廓包含直线部分，直线部分的直线度为0.10mm以下。