Liquid drop discharge head and manufacture method thereof, micro device, ink-jet head, ink cartridge, and ink-jet printing device

摘要

A liquid drop discharge head includes a chip 21 that is formed by separation of a silicon wafer 20 . The silicon wafer 20 has a first direction and a second direction which are mutually intersected. The chip 21 is separated from the silicon wafer 20 by etching the wafer along a separation line 22 parallel to the first direction of the wafer and by dicing the wafer 20 along a separation line 23 parallel to the second direction of the wafer.