NOVELTY - A photovoltaic module comprises: photovoltaic cell(s) (110); back plate (120) over photovoltaic cell, and having ribbon hole (125) in it; greater than or equal to 2 ribbons (130) electrically connected to photovoltaic cell and passing through ribbon hole; encapsulant layer (140) disposed between back plate and photovoltaic cell, having through hole(s), and both of ribbons pass through, through hole; and filler (150) filling through hole of encapsulant layer, where flowability of material of filler is greater than flowability of material of encapsulant layer.    USE - As photovoltaic module (claimed).    ADVANTAGE - The photovoltaic module comprises encapsulant layer made of ionomer to provide moisture resistance and mechanical strength, and to solve issues caused by using ethylene vinyl acetate (EVA) encapsulant layer, where EVA has some issues as it is exposed to sun light, such as EVA is easily decomposed under sun light and then further degraded in presence of oxygen and heat. In addition, peroxide, normally applied for EVA crosslinking may also cause EVA turning into yellow color under heat and humid condition. Since ionomer is material with low flowability, bubbles and voids may exist between encapsulant layer and photovoltaic cell after lamination process. Therefore, cooling system for conducting vacuum lamination process may be necessary to reduce bubbles or voids formation. However, such cooling system is costly and expensively, and long process time may reduce yield of photovoltaic modules production as well. Thus through hole is provided in encapsulant layer, and is filled with filler. Since flowability of material of filler is greater than flowability of material of encapsulant layer, filler can fill voids between filler and photovoltaic cell during lamination process. As a result, possibility of formation of bubbles and voids between encapsulant layer/filler and photovoltaic cell is eliminated, and therefore reliability is remarkably enhanced. On other hand, laminated photovoltaic module may be free of edge bubbles without employing cooling system, so that manufacturing cost can be reduced, as well as production yield can also be improved.    DETAILED DESCRIPTION - A photovoltaic module comprises: at least one photovoltaic cell (110); back plate (120) disposed over photovoltaic cell, where back plate has ribbon hole (125) in it; at least two ribbons (130) electrically connected to photovoltaic cell and passing through ribbon hole; encapsulant layer (140) disposed between back plate and photovoltaic cell, where encapsulant layer has at least one through hole in it, and both of ribbons pass through, through hole; and filler (150) filling through hole of encapsulant layer, where flowability of material of filler is greater than flowability of material of encapsulant layer. The photovoltaic module further comprises insulating sheet (170) disposed between encapsulant layer and photovoltaic cell. The main surface area of filler is greater than or equal to main surface area of insulating sheet. The photovoltaic module further comprises first insulating layer (160a) and second insulating layer (160b) disposed between insulating sheet and ribbons to form opening between first insulating layer and second insulating layer, where opening is aligned with through hole of encapsulant layer. The first insulating layer has first main surface, second insulating layer has second main surface, and first and second main surfaces are greater than main surface of ribbons. The insulating layer and insulating sheet are made of same material. Filler is positioned directly above insulating sheet. The photovoltaic module further comprises adhesive layer (180) disposed between insulating sheet and photovoltaic cell. The encapsulant layer is made of ionomer. An INDEPENDENT CLAIM is included for method for manufacturing photovoltaic module, involving: forming at least one through hole in encapsulant layer; electrically connecting at least two ribbons to photovoltaic cell; positioning encapsulant layer on photovoltaic cell in such manner that ribbons pass through, through hole; and filling through hole with filler and making ribbons protrude from filler, where flowability of material of filler is greater than flowability of material of encapsulant layer.    DESCRIPTION OF DRAWING(S) - The figure shows cross-sectional view of the photovoltaic module.    Photovoltaic cell (110)    Back plate (120)    Ribbon hole in back plate (125)    Ribbons (130)    Encapsulant layer (140)    Filler (150)    First insulating layer (160a)    Second insulating layer (160b)    Insulating sheet (170)    Adhesive layer (180)