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US 9,868,281 B2Granted
Inkjet head
AssigneeRohm Co., Ltd.
InventorTakaya Nagahata
Life of this patent
Estimating the term…
Abstract
An inkjet head includes a substrate that defines a cavity in which ink is stored, a vibrating membrane that is supported by the substrate and that defines the cavity, and a piezoelectric device that is disposed on the vibrating membrane and that changes a volume of the cavity by displacing the vibrating membrane. A driving IC is mounted on the actuator substrate and drives the piezoelectric device.
Claims6
An inkjet head comprising:
- an actuator substrate that defines a cavity in which ink is stored;
- a vibrating membrane that is supported by the actuator substrate and that defines the cavity;
- a piezoelectric device that is disposed on the vibrating membrane and that changes a volume of the cavity by displacing the vibrating membrane;
- and
- a driving IC that is mounted on the actuator substrate and that drives the piezoelectric device;
- wherein the driving IC includes
- a plurality of output terminals that are concentrated on a first surface facing the actuator substrate and joined to the actuator substrate, and
- a plurality of input terminals disposed on a second surface on a side opposite to the first surface,
- and wherein
- the driving IC is mounted on a surface of the actuator substrate so as to cover the piezoelectric device, and
- the driving IC has a recess portion that is formed in an opposing surface thereof facing the surface of the actuator substrate and that houses the piezoelectric device.
8 more elements
An inkjet head driving IC that is mounted on an actuator substrate provided with a piezoelectric device used to discharge ink and that drives the piezoelectric device, the inkjet head driving IC comprising:
- a plurality of output terminals that are concentrated on a first surface facing the actuator substrate and that are joined to the actuator substrate;
- a plurality of input terminals disposed on a second surface on a side opposite to the first surface;
- and
- a recess portion that is formed in an opposing surface facing a surface of the actuator substrate and that houses the piezoelectric device.
1 more element
Dependencies are inferred from the claim text.