| 摘要 |
PROBLEM TO BE SOLVED: To provide an advertisement poster using a solar cell, which makes up for the defect of the transparent solar cell and can make the use of an advantage. SOLUTION: The liquid crystal advertisement poster is constituted of a solar cell layer 2 covering the surface of a liquid crystal display 2, a back light 3 arranged at the back of the liquid crystal display 2, a battery 4, a control board 5 and an RF module 6 connected to a public line.
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