Image sensor

An image sensor includes a substrate having a first surface and a second surface opposite to each other, a photoelectric conversion region provided in the substrate, and a polarizer provided at the first surface of the substrate. The polarizer includes a lower structure comprising at least one trench recessed from the first surface of the substrate toward the photoelectric conversion region, and a plurality of upper patterns provided on the lower structure and spaced apart from each other in a first direction parallel to the first surface. 一种图像传感器，包括：衬底，其具有彼此相对的第一表面和第二表面；光电转换区域，其设置在衬底中；以及偏振器，其设置在衬底的第一表面。偏振器包括：下结构，其包括至少一个沟槽，所述至少一个沟槽从衬底的第一表面朝向光电转换区域凹陷；以及多个上图案，其设置在下结构上，并且在与第一表面平行的第一方向上彼此间隔开。