Ink jet recording head, substrate for said head and ink jet recording device.

摘要

A recording head equipped with a plurality of liquid discharge portions has a discharge opening (500) for discharging ink, and a substrate provided with a plurality of electrothermal transducers (1-104) for generating thermal energy to be utilized for discharging the ink supplied to the liquid discharging portions (500) and a plurality of functional devices connected electrically to the electrothermal transducers. The plurality of functional devices are arranged in the direction from the arrangement direction of the plurality of electrothermal transducers (1-104) within the region provided at the wiring portion including the common electrode wiring (1-102) and the selective electrode wiring for said plurality of electrothermal transducers and the plurality of functional devices. The plurality of electrothermal transducers are arranged in the vicinity thereof to the common electrode wiring, the wiring portion is formed essentially at lower layer than the layer where the electrothermal transducers are formed. <IMAGE> <IMAGE> <IMAGE>