Patent ID: 8158878

Claim:
A thin film solar cell module comprising: a substrate; a plurality of cells each including a first electrode positioned on the substrate, a second electrode positioned on the first electrode, and a photoelectric transformation layer positioned between the first electrode and the second electrode, wherein the plurality of cells are divided into a first group and a second group, each group having first and second surfaces that oppose one another, wherein a plurality of cells included in the first group are electrically connected in series to one another, and a plurality of cells included in the second group are electrically connected in series to one another; at least one lead wire overlapped with at least one group of the first and second groups on one of the first or second surfaces with a crossing direction over a length direction of the plurality of cells comprised in the at least one group of the first and second groups, wherein the first group and the second group are electrically connected in parallel to connecting points of the first and second groups using the at least one lead wire; at least one insulating layer overlapped with the at least one group of the first and second groups on one of the first or second surfaces and positioned between the at least one lead wire and the second electrodes of the plurality of cells comprised in the at least one group of the first group and the second group with a crossing direction over a length direction of the plurality of cells comprised in the at least one group of the first and second groups, wherein a width of the at least one insulating layer is greater than a width of the at least one lead wire; and a junction box collecting electric power produced by the first and second groups, wherein the at least one lead wire is electrically connected to the junction box, wherein a remaining portion of the at least one lead wire except portions that are connected to the connecting points overlaps with the plurality of cells comprised in the at least one group of the first and second groups on one of the first or second surfaces, and wherein the junction box overlaps the at least one group.