Inkjet printing device, printing method of bipolar element, and manufacturing method of display device
AssigneeSamsung Display Co., Ltd.
InventorsAn Na Ryu, Jin Oh Kwag, Heung Cheol Jeong
Life of this patent
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Abstract
An inkjet printing device includes a stage; an inkjet head disposed above the stage and comprising nozzles through which ink is discharged, the ink including bipolar elements extending in a direction; an ink circulation part which supplies the ink to the inkjet head, and to which the ink remaining after being discharged from the inkjet head is supplied; and at least one sensing part disposed between the inkjet head and the ink circulation part and sensing a number of the bipolar elements that are discharged through the nozzles.
Claims20
An inkjet printing device comprising:
- a stage;
- an inkjet head disposed above the stage and comprising nozzles through which ink is ejected, the ink comprising bipolar elements extending in a direction;
- an ink circulation part supplying the ink to the inkjet head, and supplied with the ink remaining after the ink is ejected from the inkjet head;
- and
- at least one sensing part disposed between the inkjet head and the ink circulation part and measuring a number of the bipolar elements ejected through the nozzles.
A printing method of a bipolar element, comprising:
- preparing an ink circulation part storing ink in which bipolar elements are dispersed and supplying the ink to an inkjet head;
- ejecting the ink from the inkjet head and measuring a number of bipolar elements in the ejected ink;
- and
- controlling the number of the bipolar elements in the ink supplied to the inkjet head in case that the number of the bipolar elements in the ink exceeds a reference set value.
A method of manufacturing a display device, comprising:
- preparing a target substrate on which a first electrode and a second electrode are formed;
- spraying ink in which light emitting elements are dispersed onto the target substrate while controlling a number of the light emitting elements dispersed in the ink;
- and
- disposing the light emitting elements onto the first electrode and the second electrode.
Dependencies are inferred from the claim text.