Inkjet head chip and inkjet print head using the same
AssigneeSamsung Electronics Co., Ltd.
InventorYang-hoe Kim
Life of this patent
Estimating the term…
Abstract
An inkjet head chip and an inkjet print head including the inkjet head chip includes a plurality of nozzles, a plurality of discharging units which discharge ink through the plurality of nozzles, a main pad which is electrically connected to the plurality of discharging units in order to supply a driving signal to the plurality of discharging units, and a test pad which supplies a test driving signal to some of the discharging units. The test driving signal is supplied to the test pad to determine similar printing characteristics of a plurality of inkjet head chips.
Claims22
An inkjet head chip comprising:
- a plurality of nozzles;
- a plurality of discharging units which discharge ink through the plurality of nozzles;
- a main pad having a plurality of electrical terminals which is electrically connected to the plurality of discharging units in order to supply a driving signal to the plurality of discharging units, the main pad disposed along a side of the inkjet head chip;
- and
- a test pad having a plurality of electrical terminals which supplies a test driving signal to some of the plurality of discharging units to which the main pad is electrically connected to supply the driving signal, the test pad disposed along the side of the inkjet head chip.
An inkjet print head comprising:
- a plurality of inkjet head chips , each inkjet head chip comprising:
- a plurality of nozzles;
- a plurality of discharging units to discharge ink through the plurality of nozzles;
- a main pad having a plurality of electrical terminals which is electrically connected to the plurality of discharging units in order to supply a driving signal to the plurality of discharging units, the main pad disposed along a side of the inkjet head chip;
- and
- a test pad having a plurality of electrical terminals which supplies a test driving signal to some of the plurality of discharging units to which the main pad is electrically connected to supply the driving signal, the test pad disposed along the side of the inkjet head chip;
- and
- a plurality of connectors which are electrically connected to the main pads of the plurality of inkjet head chips in order to supply a driving signal to the plurality of inkjet head chips.
An inkjet print head comprising:
- a plurality of inkjet head chips, each inkjet head chip comprising:
- a plurality of nozzles;
- a plurality of discharging units to discharge ink through the plurality of nozzles;
- a main pad having a plurality of electrical terminals which is electrically connected to the plurality of discharging units in order to supply a driving signal to the plurality of discharging units, the main pad disposed along a side of the inkjet head chip;
- and
- a test pad having a plurality of electrical terminals which supplies a test driving signal to some of the plurality of discharging units to which the main pad is electrically connected to supply the driving signal, the test pad disposed along the side of the inkjet head chip;
- and
- a circuit board which comprises a plurality of connection pads electrically connected to the main pads of the plurality of inkjet head chips.
Dependencies are inferred from the claim text.