Patent ID: 8993872
Filing Date: 2015-03-31
Classification: H01L,H02S,Y02E

Abstract:
1. A photovoltaic module, comprising: a solar cell module including a plurality of solar cells; an inverter converting DC voltage supplied from the solar cell module into AC voltage and outputting the AC voltage; and a screen generating an electric field based on the AC voltage, the screen comprising multiple electrode patterns separated from each other that receive AC voltage and a switch, the multiple electrode patterns comprising a first electrode pattern and a second electrode pattern, wherein the switch is configured to connect and disconnect the first electrode pattern and the second electrode pattern forming the electric field having periodic change to eliminate a first material from the screen when the switch is in an off state and the first and the second electrode patterns are electrically open, and wherein heat is generated to melt a second material on the screen when the switch is configured to be in an on state and the first and the second electrode patterns are electrically connected.