Patent ID: 9136415
Filing Date: 2015-09-15
Classification: H01L,Y02E

Abstract:
1. A solar battery cell that comprises a plurality of grid electrodes that are formed in parallel and light-receiving-surface lead connection electrodes extending longitudinally on first straight lines that are substantially orthogonal to the grid electrodes and are connected to light-receiving-surface lead wires, the light-receiving-surface lead connection electrodes extending only on a light receiving surface of a semiconductor substrate without protruding beyond the light receiving surface, each light-receiving-surface lead connection electrode having, in a width direction, an outermost longitudinal edge on one side of the each light-receiving-surface lead connection electrode and an opposite outermost longitudinal edge on the opposite side of the each light-receiving-surface lead connection electrode, the outermost longitudinal edge and the opposite outermost edge being spaced equidistant from a longitudinal centerline of the each light-receiving-surface lead connection electrode, the longitudinal centerline passing longitudinally through the each light-receiving-surface lead connection electrode, and the solar battery cell comprises a plurality of back-surface lead connection electrodes that are connected to back-surface lead wires, formed on second straight lines that are substantially opposite to the first straight lines while sandwiching the semiconductor substrate together with the first straight lines, on a back surface of the semiconductor substrate, wherein a width of each one of the light-receiving-surface lead connection electrodes at a position where one light-receiving-surface lead connection electrode is opposite to one of the back-surface lead connection electrodes is larger than a width of the one light-receiving-surface lead connection electrode at a position where the one light-receiving-surface lead connection electrode is not opposite to the one back-surface lead connection electrode, and an edge portion of each of the light-receiving-surface lead connection electrodes is not overlapped with an edge portion of each of the back-surface lead connection electrodes in the width direction, the width being, in the width direction, from the outermost longitudinal edge of the one light-receiving-surface lead connection electrode to the opposite outermost longitudinal edge of the one light-receiving-surface lead connection electrode.