TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Properties: The water vapor permeability of the resin laminate is 1.0 g/m2.24 hours or less. The power generation element in a solar battery cell is amorphous silicon.    TECHNOLOGY FOCUS - POLYMERS - Preferred Laminate: The resin laminate is placed outside a substrate in a solar battery cell. The resin laminate further contains a layer (A) made of ethylene vinyl acetate copolymer (EVA), which is placed at the substrate side in a solar battery opposite to layer made of a liquid crystal polymer. The resin laminate further contains a layer (C) made of polyvinylidene fluoride (PVDF).Preferred Composition: The liquid crystal polymer showing optical anisotropy in molten state is a liquid crystal polyester resin composition comprising a liquid crystal polyester (A), as a continuous phase and a copolymer (B), containing a functional group reactive with the liquid crystal polyester, as a dispersed phase. The resin composition is obtained by melt-kneading 56-99.9 wt.% of the liquid crystal polyester (A) and 44-0.1 wt.% of the copolymer (B) with the liquid crystal polyester. The functional group reactive with the liquid crystal polyester is an oxazolyl, epoxy or amino group. The copolymer (B) contains 0.1-30 wt.% of an unsaturated glycidyl carboxylate unit and/or unsaturated ether unit, and has heat of fusion of less than 3 J/g, and Mooney viscosity of 3-70 as measured by using a large rotor at 100 degrees C according to JIS K6300. Alternatively, the copolymer (B) is a rubber with an epoxy group, or a thermoplastic resin with an epoxy group. The rubber having an epoxy group is made of (meth)acrylate-ethylene-(unsaturated glycidyl carboxylate and/or unsaturated glycidyl ether)copolymer rubber. The (meth)acrylate includes at least one selected from methyl acrylate, methyl methacrylate, n-butyl acrylate, n-butyl methacrylate, tert-butyl acrylate, tert-butyl methacrylate, 2-ethylhexyl acrylate and 2-ethyl hexyl methacrylate. The thermoplastic resin having an epoxy group is an epoxy group-containing ethylene copolymer composed of 50-99 wt.% of an ethylene unit, 0.1-30 wt.% of an unsaturated glycidyl carboxylate unit and/or unsaturated glycidyl ether unit and 0-50 wt.% of an ethylenically unsaturated ester compound unit. The liquid crystal polyester (A) contains the aromatic hydrocarboxylic acid repeating unit of formula (A) in an amount of at least 30 mol % based on the total amount. The liquid crystal polyester (A) is obtained by reacting an aromatic dicarboxylic acid, aromatic diol and aromatic hydrocarboxylic acid or by reacting a combination of different kinds of aromatic hydroxycarboxylic acids. EXAMPLE - p-Acetoxybenzoic acid (8.3 kg), terephthalic acid (2.49 kg), isophthalic acid (0.83 kg) and 4,4'-diacetoxydiphenyl (5.45 kg) were polymerized to obtain liquid crystal polyester (A) which exhibited optical anisotropy under pressure at 340 degrees C or more. Rubber of methylacrylate/ethylene/glycidyl methacrylate (59/38.7/2.3 weight ratio) with a Mooney viscosity of 15 and a heat of fusion of less than 1 J/g was prepared. Liquid crystal polyester (90 wt.%) and rubber (10 wt.%) were melt kneaded and the resulting composition was extruded into a thin film. A 5% chloroform solution of rubber was applied onto the film, and dried. A linear low density polyethylene film was overlapped with the film to obtain the laminate for the outer covering. The outer covering had water vapor permeability of 0.6 g/m2.24 hour at 40 degrees C.