Resin ejection nozzle, resin encapsulation method, and electronic part assembly

A resin encapsulation method which ejects an encapsulation resin to an encapsulation area of a substrate on which an electronic part is mounted, when a resin ejection nozzle is moved over the substrate, the resin encapsulation method comprising the steps of:

• providing a resin ejection nozzle comprising an ejection hole part and an ejection part configured to eject the encapsulation resin, the ejection part having a longitudinal direction which is perpendicular to a direction of movement of the nozzle,
• said ejection hole part including a slotted ejection hole;
• causing the encapsulation resin to be ejected through the slotted ejection hole to contact a substantially half area of a side of the electronic part which lies at right angles to the direction of movement of the nozzle;
• and
• causing the encapsulation resin to gradually contact a remaining area of the side of the electronic part after the substantially half area of the side of the electronic part is contacted by the encapsulation resin
• wherein a plurality of secondary ejection holes are arranged adjacent to a side of the slotted ejection hole which lies in the direction of movement of the nozzle, the plurality of secondary ejection holes causing the encapsulation resin to contact the substantially half area of the side of the electronic part which lies at right angles to the direction of movement of the nozzle,
• the plurality of secondary ejection holes being arranged such that the encapsulation resin from each secondary ejection hole is caused to contact the substantially half area of the side of the electronic part.