Pixel structure and manufacturing method thereof, array substrate and display device

A pixel structure, comprising:

• a first electrode, which comprises a first groove group, a second groove group and a non-hollow portion adjacent to both the first groove group and the second groove group, wherein:
• the first groove group comprises a plurality of first grooves which are hollow and are successively arranged, each first groove comprises a first end and a second end which are arranged along an extending direction of the first groove, first ends of the plurality of first grooves are on a first side of the first groove group, second ends of the plurality of first grooves are on a second side of the first groove group, and the second side and the first side are opposite to each other;
• the second groove group is on the second side of the first groove group and comprises a plurality of second grooves which are hollow and are successively arranged, each second groove comprises a third end and a fourth end which are arranged along an extending direction of the second groove, and the third end is on a side of the fourth end close to the first groove group;
• and
• the third end of at least one of the plurality of second grooves is staggered with respect to the second end of the first groove which is adjacent to the third end of the at least one of the plurality of second grooves;
• a number of the plurality of first grooves is not equal to a number of the plurality of second grooves.

A pixel structure, comprising:

• a first electrode, which comprises a first groove group, a second groove group and a non-hollow portion adjacent to both the first groove group and the second groove group, wherein:
• the first groove group comprises a plurality of first grooves which are hollow and are successively arranged, each first groove comprises a first end and a second end which are arranged along an extending direction of the first groove, first ends of the plurality of first grooves are on a first side of the first groove group, second ends of the plurality of first grooves are on a second side of the first groove group, and the second side and the first side are opposite to each other;
• the second groove group is on the second side of the first groove group and comprises a plurality of second grooves which are hollow and are successively arranged, each second groove comprises a third end and a fourth end which are arranged along an extending direction of the second groove, and the third end is on a side of the fourth end close to the first groove group;
• and
• the third end of at least one of the plurality of second grooves is staggered with respect to the second end of the first groove which is adjacent to the third end of the at least one of the plurality of second grooves;
• the pixel structure further comprises a first signal line extending in a first direction and a second signal line extending in a second direction and intersecting the first signal line, and one of the first signal line and the second signal line is a gate line and the other of the first signal line and the second signal line is a data line;
• a first acute angle is between the first groove and the first signal line, a second acute angle is between the second groove and the first signal line, and the first acute angle is not equal to the second acute angle.