Image sensor

An image sensor is provided. The image sensor includes: a substrate including a first side on which light is incident and a second side opposite to the first side; a pixel isolation pattern formed inside the substrate and defining a plurality of unit pixels; a first photoelectric conversion region and a second photoelectric conversion region arranged inside each of the plurality of unit pixels along a first direction; and a region isolation pattern protruding from the pixel isolation pattern in a second direction crossing the first direction, and defining an isolation region between the first photoelectric conversion region and the second photoelectric conversion region. A first width of the isolation region on the first side in the second direction is greater than 1.1 times a second width of the isolation region on the second side in the second direction. 提供了图像传感器。所述图像传感器包括：基底，包括光入射在其上的第一侧以及与第一侧相对的第二侧；像素隔离图案，形成在基底内部，并且限定多个单元像素；第一光电转换区域和第二光电转换区域，沿着第一方向布置在所述多个单元像素中的每个单元像素内部；以及区域隔离图案，从像素隔离图案在与第一方向交叉的第二方向上突出，并且在