Patent ID: 7910459

Claim:
A method of manufacturing a device, for dividing a wafer provided with devices formed in a plurality of regions demarcated by planned dividing lines formed in a lattice pattern in a face-side surface thereof, into individual devices, said method comprising: a wafer dividing step of forming dividing grooves in a predetermined depth along said planned dividing lines from a face side of said wafer, then grinding a backside surface of said wafer to expose said dividing grooves on a backside of said wafer and dividing said wafer into said individual devices; an adhesive film attaching step of attaching a UV-curing adhesive film to said backside surface of said wafer divided into said individual devices; a wafer supporting step of adhering an adhesive film side of said wafer with said adhesive film attached thereto to a surface of a dicing tape attached to an annular frame; an adhesive film curing step of radiating UV rays from the face side of said wafer adhered to said dicing tape so as to irradiate said adhesive film with said UV rays through said dividing grooves formed in said wafer and thereby to cure those regions of said adhesive film which correspond to said dividing grooves; an adhesive film dividing step of radiating a laser beam having such a wavelength as to permit absorption into said adhesive film, from the face side of said wafer and along said dividing grooves, so as to divide said cured adhesive film on a device basis along said dividing grooves; and a pick-up step of releasing from said dicing tape, and picking up, each said device to which said adhesive film divided on the device basis has been attached.