Array substrate and method for manufacturing the same and display device

A method for manufacturing an array substrate, the array substrate comprising an underlay substrate, a blocking wall disposed in a sealing area on the underlay substrate, and an alignment film disposed in a display area on the underlay substrate, the method comprising:

• forming a common electrode metal on the underlay substrate;
• forming a gate insulating layer on the common electrode metal;
• forming a passivation layer is formed on the gate insulating layer;
• and
• disposing the blocking wall on a common electrode metal area;
• wherein an area of the common electrode metal corresponding to the passivation layer is the common electrode metal area;
• the blocking wall comprises a first blocking wall and a second blocking wall;
• the first blocking wall comprises a plurality of first blocking members arranged spaced away;
• the second blocking wall is located between the first blocking wall and a sealant bonding portion;
• the second blocking wall comprises a plurality of second blocking members arranged spaced away;
• the first blocking wall is configured to block the alignment film in at least a first flow direction;
• and the second blocking wall is configured to block the alignment film in at least a second flow direction.