Abstract: An LED backlight device is provided. A light guide plate has opposing edges of a width direction at a side thereof extended into a pair of opposing walls and a recess formed therebetween. A light emitting diode (LED) light source is accommodated in the recess to project light into the light guide plate. In this fashion, the light guide plate has the recess formed at one side of the light guide plate to seat the LED package therein. This minimizes loss of light incident from the LED package into the light guide plate and allows the LED package to be aligned securely with the light guide plate.

Abstract: The invention relates to a light guide panel capable of distributing light beams incident from a light source to an entire surface thereof. The light guide panel has at least two through holes formed in a path of the incident light beams, apart in a predetermined interval from a light incident surface. The through holes are formed perpendicular to the path of the incident light beams, and lined along the light incident surface of the light guide panel. The light guide panel according to the present invention can improve uniformity of incident light without increasing the number or size of the light source, thereby distributing the incident light in a wider angle and decreasing a light mixing region. The light guide panel is produced in a simple manufacturing process, reducing the manufacturing costs.