LIGHT GUIDE MEMBER, PLANAR LIGHT SOURCE DEVICE PROVIDED WITH THE LIGHT GUIDE MEMBER, AND DISPLAY APPARATUS USING THE PLANAR LIGHT SOURCE DEVICE

摘要

It is an object to provide a light guide member that is laminated on the upper face of a luminous device mounting substrate on which a luminous device such as an LED has been mounted. In the light guide member, a luminance at the section directly over the luminous device is lowered, a luminance distribution on a light emission face of the light quide plate can be uniformed, a nonuniformity in luminance and an unevenness of colors can be decreased, a utilization efficiency of light can be increased, and a high luminance can be implemented. In addition, it is an object to provide a light quide member, a planar light source device provided with the light quide member, and a display apparatus using the planar light source device, which can be thinned and miniaturized as a planar light source device using the light quide member. A light quide plate, which is laminated on the upper face of a luminous device mountion substrate on which a luminous device is mounted and which is for diffusing and quiding upward a light emitted from the luminous device, is characterized by comprising a light reflecting portion formed on the bottom face of the light quide member in an area other than an area near around the luminous device.