Patent ID: 7829783

Claim:
A photovoltaic module comprising: a transparent front layer; a multi-layer flexible back sheet; and a plurality of interconnected photovoltaic cells disposed between the transparent front layer and the multi-layer flexible back sheet, wherein said multi-layer flexible back sheet comprises an insulation sheet, an electrically isolated moisture barrier, a back layer and a seal; said insulation sheet disposed between the plurality of photovoltaic cells and the moisture barrier, said moisture barrier disposed between the insulation sheet and the back layer, and further wherein said seal comprises a bond between a peripheral region of each of the insulation sheet and the back layer, said seal directly contacts the peripheral region of each of the insulation sheet and the back layer, and the moisture barrier is recessed from the peripheral regions such that the seal extends around the moisture barrier, and the moisture barrier is electrically isolated by the insulation sheet, back layer and seal.