Array substrate, method for manufacturing array substrate, display panel and display device

An array substrate, comprising:

• a base substrate;
• a plurality of gate lines, a plurality of data lines and a plurality of common electrode lines arranged on the base substrate;
• a pixel electrode arranged at each region defined by adjacent gate lines and adjacent data lines;
• and a thin film transistor (TFT) arranged at a position in proximity to a junction between each of the gate lines and the corresponding data line, wherein a drain electrode of the TFT is electrically connected to the pixel electrode through a via-hole, wherein
• each of the common electrode lines comprises a primary electrode line extending in a direction identical to an extension direction of the gate line, and a secondary electrode line connected vertically to the primary electrode line;
• the secondary electrode line comprises at least one first secondary electrode line arranged between the via-hole and the data line;
• the via-hole is arranged between the primary electrode line and the gate line;
• the primary electrode line comprises a first portion, a second portion, and a third portion, the plurality of data lines comprises a first data line and a second data line adjacent to the first data line, the first portion is arranged at a side of the first data line distal to the pixel electrode, the second portion is arranged at a side of the second data line distal to the pixel electrode, the third portion is arranged between the first portion and the second portion and is in direct physical contact with both the first portion and the second portion, the third portion is configured to span the pixel electrode, and the first portion, the second portion, and the third portion are arranged in one straight line;
• the first secondary electrode line consists of a fourth portion and a fifth portion, the fourth portion is in direct physical contact with the third portion, the fifth portion is arranged at a side of the fourth portion distal to the primary electrode line, the fifth portion is in direct physical contact with the fourth portion, the fourth portion and the fifth portion are arranged in another one straight line, an orthogonal projection of the fourth portion onto the base substrate is located within an orthogonal projection of the pixel electrode onto the base substrate, and an orthogonal projection of the fifth portion onto the base substrate is located outside of the orthogonal projection of the pixel electrode onto the base substrate;
• and
• an orthogonal projection of the third portion onto the base substrate overlaps the orthogonal projection of the pixel electrode onto the base substrate.