Patent ID: 8659721

Claim:
A liquid crystal display device, comprising: a liquid crystal panel for controlling display by changing orientation of a liquid crystal composition; a single cylindrical light-source section for emitting light to a An overall area of the liquid crystal panel; and a reflecting section provided so that the single cylindrical light-source section is sandwiched between the reflecting section and the liquid crystal panel, for reflecting the light emitted from the single cylindrical light-source section toward the liquid crystal panel, wherein at least a part of a sectional shape of a reflecting surface of the reflecting section in a cross section perpendicular to an axial direction of the single cylindrical light-source section is formed based on a parabola whose focal point is a position of the single cylindrical light source section, the ENTIRE sectional shape of the reflecting surface includes a polygonal line extending in a zigzag manner, and the polygonal line has a segment of radial straight lines extending from the focal point.