Patent ID: 7977231
Filing Date: 2011-07-12
Classification: H01L

Abstract:
1. A method of dispensing adhesive for conducting die bonding onto a substrate, the substrate including rows of bond pads aligned along a first axis and columns of bond pads aligned along a second axis transverse to the first axis where target dispensing positions are located, the method comprising the steps of: providing a first dispensing head incorporating a first nozzle and a second dispensing head incorporating a second nozzle; feeding the substrate along the first axis to a position where the first and second dispensing heads are located; conducting pattern recognition of a columnar section of the substrate comprising one or more consecutive columns of bond pads with an optical system by moving the optical system along the second axis relative to the substrate; and thereafter driving the first nozzle and the second nozzle to concurrently dispense adhesive from the first and second nozzles onto the target dispensing positions in the same columnar section of the substrate where pattern recognition has been conducted.