Patent ID: 8916415
Filing Date: 2014-12-23
Classification: H01L,H05K,Y02E

Abstract:
1. A method for producing a metallic contact structure for electrically contacting a photovoltaic solar cell, comprising for generation of the contact structure applying a paste comprising metal particles via dispensing openings onto a surface of a carrier substrate, moving the dispensing openings and the carrier substrate in reference to each other during discharge of the paste, rotating the paste in a circulation region, respectively separating a portion of the paste at a plurality of branching points from the circulation region and each of the branching points is allocated to at least one of the dispensing openings, and applying the paste separated at the branching point on a surface of the carrier substrate, with the paste respectively flowing through a flow path with a length of less than 5 cm between the branching point out of the circulating region and a discharge point of the dispensing opening allocated to said branching point, wherein the rotation in the circulating region occurs by a movement back and forth in the circulating region.