Liquid ejection head

A liquid ejection head comprising:

• a plurality of ejection nozzles configured to eject liquid;
• a plurality of pressure compartments which each communicate with a corresponding ejection nozzle of the plurality of ejection nozzles and are each combined with an energy generating element configured to generates ejection energy for ejecting the liquid;
• at least one supply port configured to supply the liquid to the plurality of pressure compartments;
• and
• a plurality of first pillar structures arranged between the at least one supply port and the plurality of pressure compartments,
• wherein the plurality of pressure compartments is each defined by a plurality of flow path walls arranged in line and parallel to each other,
• wherein a liquid flow path is formed and configured to allow the liquid to flow through the liquid flow path from the at least one supply port via the plurality of first pillar structures into the plurality of pressure compartments, and
• wherein a longest clearance between the plurality of first pillar structures is smaller than a shortest clearance between the plurality of flow path walls and the plurality of first pillar structures.