NOVELTY - A solar battery backboard has 1st thermally conductive weathering layer (1) containing 1st resin composition (7), 1st thermally conductive adhesive layer (2) containing 2nd resin composition, substrate layer (3) containing 1st resin composition, barrier layer (4) containing aluminum or silica, 2nd thermally conductive adhesive layer (6) containing 3rd resin composition, and 2nd thermally conductive weathering layer (7) containing 4th resin composition.    USE - A solar battery backboard (claimed).    ADVANTAGE - The battery backboard has enhanced adhesive property, high anti-aging performance and moisture resistance, and facilitates smooth heat transfer.    DETAILED DESCRIPTION - A solar battery backboard has 1st thermally conductive weathering layer (1) containing 1st resin composition (7), 1st thermally conductive adhesive layer (2) containing 2nd resin composition, substrate layer (3) containing 1st resin composition, barrier layer (4) containing aluminum or silica, 2nd thermally conductive adhesive layer (6) containing 3rd resin composition, and 2nd thermally conductive weathering layer (7) containing 4th resin composition. The 1st resin composition comprises 100 pts. wt. hydroxyl or carboxyl-containing 1st resin substrate, 10-30 pts. wt. fluorine-containing 1st resin, 5-15 pts. wt. 1st curing agent, 30-50 pts. wt. 1st inorganic filler, and 250-500 pts. wt. 1st organic solvent, 2nd resin composition contains 100 pts. wt. fluorine-containing 2nd resin, 8-20 pts. wt. 2nd curing agent, 50-100 pts. wt. 2nd inorganic filler, and 80-200 pts. wt. 2nd organic solvent, 3rd resin composition contains 100 pts. wt. hydroxyl or carboxyl-containing 3rd resin substrate, 10-30 pts. wt. fluorine-containing 3rd resin, 5-15 pts. wt. 3rd curing agent, 30-50 pts. wt. 3rd inorganic filler, and 250-500 pts. wt. 3rd organic solvent, and 4th resin composition contains 100 pts. wt. fluorine-containing 4th resin, 8-20 pts. wt. 4th curing agent, 50-100 pts. wt. 4th inorganic filler, and 80-200 pts. wt. 4th organic solvent. An INDEPENDENT CLAIM is included for manufacture of solar battery backboard which involves taking microporous substrate, coating with 1st resin composition, filling pores, curing, coating with 2nd resin composition in surface, curing, depositing silica or aluminum in surface to obtain barrier layer, coating barrier layer surface with 3rd resin composition, curing, coating with 4th resin composition, and curing.    DESCRIPTION OF DRAWING(S) - The drawing shows schematic diagram of solar battery backboard.    1st thermally conductive layer (1)    1st thermally conductive adhesive layer (2)    Substrate layer (3)    Barrier layer (4)    2nd thermally conductive adhesive layer (5)    2nd thermally conductive layer (6)    1st resin composition (7)