Overlay pattern

An overlay pattern, comprising:

• a light-transmitting region;
• and
• a first light-proof region, wherein the first light-proof region and the light-transmitting region are arranged on a same plane, and an area of the first light-proof region is larger than an area of the light-transmitting region,
• wherein an orthographic projection of the first light-proof region on the plane and an orthographic projection of the light-transmitting region on the plane do not overlap and form a first rectangular region;
• wherein the first light-proof region comprises:
• a first sub-rectangular region, arranged in a middle of the first rectangular region, wherein each side of the first sub-rectangular region is perpendicular to two opposite sides of the first rectangular region and parallel to other two opposite sides of the first rectangular region;
• a plurality of second sub-rectangular regions, arranged at an interval and distributed on two opposite sides of the first sub-rectangular region along a first direction;
• and
• a plurality of third sub-rectangular regions, arranged at an interval and distributed on the two opposite sides of the first sub-rectangular region along a second direction, wherein the first direction is perpendicular to the second direction,
• wherein an extension direction of the plurality of the second sub-rectangular regions is parallel to an extension direction of the plurality of the third sub-rectangular regions.