DROPLET INSPECTION METHOD AND DEVICE USING 2-DIMENSIONAL IMAGE OF DROPLET

A droplet inspection method using a 2-dimensional (2D) image of a droplet includes ejecting ink onto a substrate based on a preset inspection pattern using an inkjet head, acquiring a 2D image of the droplet of ink ejected to a plurality of positions on the substrate using a measurement camera locat...

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Bibliographische Detailangaben
1. Verfasser:	SON, Sang Uk
Format:	Patent
Sprache:	eng
Schlagworte:	CORRECTION OF TYPOGRAPHICAL ERRORS i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES LINING MACHINES MEASURING PERFORMING OPERATIONS PHYSICS PRINTING SELECTIVE PRINTING MECHANISMS STAMPS TESTING TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	A droplet inspection method using a 2-dimensional (2D) image of a droplet includes ejecting ink onto a substrate based on a preset inspection pattern using an inkjet head, acquiring a 2D image of the droplet of ink ejected to a plurality of positions on the substrate using a measurement camera located on a side surface or above the substrate, and calculating a diameter of the droplet from the 2D image and calculating a volume of the droplet using the calculated diameter of the droplet and a pre-measured contact angle of the substrate for inspection.