Liquid ejection head and method of manufacturing the same

A liquid ejection head comprising:

• an element substrate including an energy generation element for ejecting liquid;
• a support member to which the element substrate is fixed;
• an electric wiring board arranged onto the support member and electrically connected to the element substrate by an electric connection portion;
• a sealant sealing the electric connection portion between the element substrate and the electric wiring board;
• and
• a cover member fixed onto the support member, and disposed to avoid the electric connection portion and the element substrate when viewed from a direction perpendicular to a surface of the element substrate,
• wherein, in a direction parallel with the surface of the element substrate, the cover member includes a part facing an outer periphery of the element substrate, and, of the part, a distance to the outer periphery of the element substrate at a first surface of the cover member bonded with the support member is greater than a distance to the outer periphery of the element substrate at a second surface that is opposite to the first surface,
• wherein the cover member includes an opening portion, and the element substrate is disposed inside the opening portion, and
• wherein the part facing the outer periphery of the element substrate in the cover member is an inner peripheral portion of the opening portion.

A liquid ejection head comprising:

• an element substrate including an energy generation element for ejecting liquid;
• a support member to which the element substrate is fixed;
• an electric wiring board arranged onto the support member and electrically connected to the element substrate by an electric connection portion;
• a sealant sealing the electric connection portion between the element substrate and the electric wiring board;
• and
• a cover member fixed onto the support member, and disposed to avoid the electric connection portion and the element substrate when viewed from a direction perpendicular to a surface of the element substrate,
• wherein, in a direction parallel with the surface of the element substrate, the cover member includes a part facing an outer periphery of the element substrate, and, of the part, a distance to the outer periphery of the element substrate at a first surface of the cover member bonded with the support member is greater than a distance to the outer periphery of the element substrate at a second surface that is opposite to the first surface, and
• wherein the part facing the outer periphery of the element substrate in the cover member includes an inclined surface or a curved surface on which a distance to the outer periphery of the element substrate continuously changes.