Patent ID: 8350989
Filing Date: 2013-01-08
Classification: G02B,H05K

Abstract:
1. A liquid crystal display device which includes a liquid crystal panel, a light source unit formed by combining a light guide plate which accommodates light rays from a side surface for illuminating a back surface of the liquid crystal panel with a light source, and a chassis for holding the light source unit, wherein: the light source is formed by mounting plural light emitting elements each provided with a power feeding electrode on a surface perpendicular to a light output surface on a wiring substrate; the wiring substrate is provided with an electrode pad connected to an electrode of the light emitting element, a wiring pattern which includes the electrode pad, having a width larger than that of the electrode pad, and is formed on both upper and back surfaces of the substrate, and through holes formed around the electrode pad in plural rows for connecting the wiring patterns formed on both the upper and back surfaces of the substrate; and the wiring patterns on both the upper and back surfaces of the wiring substrate, which is on a surface different from a light emitting element mount surface is thermally connected to the chassis.