Liquid-ejection recording head and method of manufacturing liquid-ejection recording head

A recording head comprising:

• a substrate whose first surface is provided with an element that generates energy used for ejecting liquid;
• a first portion of a supporting unit that supports a second surface of the substrate, serving as an underside of the first surface of the substrate;
• a wiring member having a plurality of electrode leads connected to a plurality of electrode pads provided in the substrate;
• a second portion of the supporting unit that supports the wiring member;
• and
• a sealant that seals a section including a connection section between the electrode pads and the electrode leads,
• wherein a region surrounded by the substrate, the second portion of the supporting unit, and the electrode leads is provided with an ascending portion that increases in height in a direction extending from the second surface of the substrate toward the first surface of the substrate, the ascending portion increasing in height from a first end to a second end of the region in an arrayed direction in which the electrode leads are arrayed.