Patent ID: 8021913
Filing Date: 2011-09-20
Classification: B23K,H01L,Y02E

Abstract:
1. A method for forming separating lines during manufacture of a photovoltaic module with series-connected cells, whereby the separating lines are produced in the transparent front electrode layer, the semiconductor layer and/or the back electrode layer, which are deposited on a substrate as functional layers, with laser scanners each with a rotatable mirror and laser beam during manufacture of a photovoltaic module with series-connected cells, the laser scanners producing adjacent separating line sections in adjacent fields in the functional layer or layers by deflection of the laser beam with the rotatable mirror, and the laser scanners and the coated substrate are moved relative to each other along the separating lines to be formed in order to produce further adjacent separating line sections in the functional layer or layers, so that continuous separating lines are formed from the separating line sections, characterized in that the laser beam, after producing a separating line section in the particular field, is so aligned with the mirror that it produces the next parallel separating line in the field, and a plurality of the laser scanners adjacent in the transverse direction (X) to the separating lines are used, whereby the width (B) of the field scanned by each laser scanner is dimensioned in the transverse direction (X) to the separating lines such that it is at the most one separating line spacing away from the field scanned by the adjacent laser scanner.