| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid jetting head and a liquid jetting apparatus which keeps a channel formation substrate well bonded with a bonding substrate and prevents both the substrates from being separated. SOLUTION: This apparatus is provided with: a nozzle plate 20 in which nozzle openings are bored; the channel formation substrate 10 in which recessed portions including pressure generation chambers 12 communicating with the nozzle openings; piezoelectric elements 300 each of which includes a lower electrode 60 provided on one surface of the channel formation substrate 10 via a diaphragm, a piezoelectric layer 70, and an upper electrode 80; and the bonding substrate 30 bonded with the channel formation substrate 10 by an adhesive layer 35 formed of an adhesive on the surface of the channel formation substrate 10 on the surface in the side of the piezoelectric element 300. In the bonding region between the channel formation substrate 10 and the bonding substrate 30, a plurality of abutting portions 120 are provided. The abutting portions protrude by a predetermined height from the diaphragm, and practically abut the bonding substrate 30. A bonding portion 130 having a bonding layer 35a having a thickness equal to or more than the height of the abutting portion 120 is provided. COPYRIGHT: (C)2007,JPO&INPIT
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