Patent ID: 7256106

Claim:
A method for dividing a substrate into a number of individual chip parts, comprising the steps of: forming a number of chip parts in the substrate, comprising, for each chip part, recesses in the substrate for containing fluid; arranging one or more breaking grooves in the substrate along individual chip parts; applying mechanical force to the substrate to break the substrate along the breaking grooves; wherein the steps of arranging recesses in the substrate and arranging breaking grooves in the substrate are performed substantially simultaneously, wherein the substrate comprises a first and a second substrate part, and the method further comprises the steps of: a) arranging in the first substrate part at least one recess for containing fluid; b) arranging in the second substrate part passages to the recess in the first substrate part, wherein a first passage forms a fluid feed and a second passage forms a fluid discharge; c) arranging one or more breaking grooves in at least one of the substrate parts; d) placing the second substrate part on the first substrate part; e) breaking the substrate along the breaking grooves.