Patent ID: 7136138

Claim:
A liquid crystal display device, comprising: a liquid crystal display panel including a transmission portion; a solar battery facing at least a part of a surface opposite to a visual recognition side of said liquid crystal display panel and absorbing a visible light to generate electric power; a first polarizing film provided on the visual recognition side of said liquid crystal display panel, said first polarizing film having a polarization transmission axis; and a second polarizing film provided on a side opposite the visual recognition side of said liquid crystal panel, said second polarizing film having a polarization transmission axis substantially perpendicular to the polarization transmission axis of said first polarizing film, wherein light is applied to said solar battery through the transmission portion of said liquid crystal display panel to generate electric power, and a display by said liquid crystal display panel is performed using said solar battery as an absorbing plate, and wherein said liquid crystal display panel, said first polarizing film and said second polarizing film are in a transmission state where light is applied to the solar battery through said liquid crystal display panel when a voltage applied to the liquid crystal panel is off.