NOVELTY - A multilayer film structure comprises top encapsulation layer (14A), bottom layer (14C) and tie layer (14B) between encapsulation layer And bottom layer, where tie layer Comprises crystalline block copolymer composite (CBC) or specified block copolymer composite (BC), comprising: i) ethylene polymer (EP) comprising polymerized ethylene (at least 40 mol%); ii) alpha -olefin-based crystalline polymer (CAOP) and iii) block copolymer comprising (a) ethylene polymer block comprising polymerized ethylene (at least 40 mol%) and (b) crystalline alpha-olefin block (CAOB), or mixture of composite(s).    USE - As multilayer film structure (claimed), used in electronic device module e.g. electronic device.    ADVANTAGE - The film exhibits excellent interlayer strength. The structure provides the necessary high resistivity and excellent level of dielectric protection needed for operations of the electronic devices, such as current conductance for photovoltaic cells.    DETAILED DESCRIPTION - A multilayer film structure comprising top encapsulation layer (14A), bottom layer (14C) and tie layer (14B) between encapsulation layer And bottom layer, where tie layer Comprises crystalline block copolymer composite (CBC) or specified block copolymer composite (BC), comprising: i) ethylene polymer (EP) comprising polymerized ethylene (at least 40 mol%); ii) alpha -olefin-based crystalline polymer (CAOP) and iii) block copolymer comprising (a) ethylene polymer block comprising polymerized ethylene (at least 40 mol%) and (b) crystalline alpha-olefin block (CAOB), or a mixture of the composite(s); and bottom layer C comprises a polyolefin having at least one melting point greater than 125 degrees C. An INDEPENDENT CLAIM is included for lamination process to construct a laminated PV module involving bringing at least the following layers into facial contact in the following order: (a) a light-receiving top sheet layer having an exterior light-receiving facial surface and an interior facial surface; (b) a light transmitting thermoplastic polymer encapsulation layer, having one facial surface directed toward the top sheet layer And one directed toward a light-reactive surface of a PV cell; (c) a PV cell having a light reactive surface; (d) a backsheet layer Comprising a multilayer film structure; and heating and compressing the layers at conditions sufficient to create the needed adhesion between the layers and, if needed in some layers or materials, initiation of their crosslinking.    DESCRIPTION OF DRAWING(S) - The figure shows cross-sectional view of photovoltaic module.    Photovoltaic module (10)    Photovoltaic cell (11)    Front encapsulant (12)    Cover sheet (13)    Top encapsulation Layer (14A)    Tie Layer (14B)    Bottom Layer (14C)