Liquid ejection head and liquid ejection apparatus

A liquid ejection apparatus comprising:

• a liquid ejection head;
• and
• a conveyance unit capable of conveying a printing medium along a conveyance direction,
• the liquid ejection head having a storing unit configured to store liquid, an element substrate having an ejection port surface in which an ejection port for ejecting liquid stored in the storing unit is formed, and an electrical circuit substrate electrically relaying a liquid ejection apparatus and the element substrate, wherein, in a posture in which the liquid ejection head is mounted on the liquid ejection apparatus, the electrical circuit substrate is located above the element substrate in the vertical direction,
• the end portion in the longitudinal direction of the electrical circuit substrate is provided with a connector for electrically connecting with an electrical connecting member comprised by the liquid ejection apparatus, and
• on the electrical circuit substrate, the connector is provided only on a top surface facing in a direction opposite to the ejection port surface.