Liquid-jet head and liquid-jet apparatus
First Claim
1. A liquid-jet head comprising:
- a passage-forming substrate including at least two rows of pressure generating chambers communicating with a nozzle orifice and being defined by a plurality of compartment walls; and
piezoelectric elements composed of a lower electrode, a piezoelectric layer and an upper electrode, the piezoelectric element being provided on one surface side of the passage-forming substrate with vibration plates interposed therebetween, wherein a joining plate joined onto the piezoelectric element side of the passage-forming substrate is provided, on which a drive circuit for driving the piezoelectric elements is mounted, a penetrated hole penetrating the joining plate in a thickness direction is provided in a portion corresponding to a space between the rows of the pressure generating chambers of the joining plate, an extracted wiring extracted from the individual piezoelectric elements is extended to the portion corresponding to the penetrated hole, and the extracted wiring and the drive circuit are electrically connected to each other with conductive wires extended through the penetrated hole.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed are a liquid-jet head that is capable of arraying pressure generating chambers in high density and achieving miniaturization thereof and a liquid-jet apparatus. In the liquid-jet head, a joining plate 30 joined onto a piezoelectric element 300 side of a passage-forming substrate 10 is provided, on which a drive circuit 110 for driving the piezoelectric elements 300 is mounted, a penetrated hole 33 penetrating the joining plate 30 in a thickness direction is provided in a portion corresponding to a space between rows of pressure generating chambers 12 of the joining plate 30, extracted wiring 90 extracted from individual piezoelectric elements 300 is extended to a portion corresponding to the penetrated hole33, and the extracted wiring 90 and a drive circuit 110 are electrically connected to each other with conductive wires 120 extended through the penetrated hole 33. Thus, the area of the penetrated hole33 is suppressed to be small.
25 Citations
7 Claims
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1. A liquid-jet head comprising:
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a passage-forming substrate including at least two rows of pressure generating chambers communicating with a nozzle orifice and being defined by a plurality of compartment walls; and
piezoelectric elements composed of a lower electrode, a piezoelectric layer and an upper electrode, the piezoelectric element being provided on one surface side of the passage-forming substrate with vibration plates interposed therebetween, wherein a joining plate joined onto the piezoelectric element side of the passage-forming substrate is provided, on which a drive circuit for driving the piezoelectric elements is mounted, a penetrated hole penetrating the joining plate in a thickness direction is provided in a portion corresponding to a space between the rows of the pressure generating chambers of the joining plate, an extracted wiring extracted from the individual piezoelectric elements is extended to the portion corresponding to the penetrated hole, and the extracted wiring and the drive circuit are electrically connected to each other with conductive wires extended through the penetrated hole. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification
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- Resources
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Current AssigneeSeiko Epson Corporation (Seiko Group)
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Original AssigneeSeiko Epson Corporation (Seiko Group)
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InventorsMiyata, Yoshinao
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current347/71
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CPC Class CodesB41J 2/161 of film type, deformed by b...B41J 2/1623 bonding and adhesionB41J 2/1629 wet etchingB41J 2/1631 photolithographyB41J 2/1646 thin film formation by sput...B41J 2002/14241 having a cover around the p...B41J 2002/14419 ManifoldB41J 2002/14491 Electrical connection
