| 摘要 |
A liquid crystal display device is provided which includes an increased brightness of a display panel by effectively utilizing light from a light source. In the liquid crystal display device, a refractive surface of a light guide plate for guiding light that enters an inner portion from the light source, is composed of a plurality of slant dividing surfaces and connection surfaces provided between the dividing surfaces. A slant angle of the dividing surfaces is set to one at which the light projected from the light source is reflected in a direction substantially parallel with a plate of the light guide plate.
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