NOVELTY - The solar cell string has multiple photovoltaic cells (2) and wiring board. The semiconductor substrate (10) of cell includes N-type conductive regions (10c,10d), and P-type conductive regions (10e,10f) that are located on back surface (10b) of substrate. The wiring board electrically connects the N-type conductive region (10d) of one of cell and P-type conductive region (10e) of another cell, and electrically connects P-type conductive region (10f) of one of cell and N-type conductive region (10d) of another cell.    USE - Solar cell string for solar cell module (claimed).    ADVANTAGE - Since the wiring board electrically connects the N-type conductive region of one of photovoltaic cell and P-type conductive region of another cell, the diode of one of the photovoltaic cell can be connected in parallel to another cell to-be-function as bypass diode, due to which electric current can be bypassed into one of photovoltaic cell, hence destruction of photovoltaic cell by reverse-bias voltage can be suppressed which shortens the productive time of solar cell, and suppresses reduction of package density of cell. Since electrode is not required in the light-receiving surface of cell, the reduction of light-receiving area of cell can be suppressed, due to which the reduction electric power generation efficiency can be suppressed. Since the N-type conductive regions and P-type conductive regions are located on back surface of semiconductor substrate, the string can be wired in the back surface of the substrate, due to which the structure of solar cell string can be simplified, and productive time of the string can be shortened. Since the cell and the wiring board are electrically connected without using electro conductive adhesive layers such as solder, the number of the materials required can be reduced, due to which manufacturing process can be simplified.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for solar cell module.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the photovoltaic cell.    Photovoltaic cell (2)    Semiconductor substrate (10)    Back surface of substrate (10b)    N-type conductive regions (10c,10d)    P-type conductive regions (10e,10f)