Abstract: The present invention relates to a light source-guide structure having an LED as a light source and a backlight apparatus having the same. The light source-guide structure includes a light guide plate with grooves formed in a peripheral side thereof and a light source having a transparent package fitted into the groove of the light guide plate with an LED chip inside the transparent package. The structure also includes a wiring substrate for seating the LED chip and reflecting the light from the LED chip to the light guide plate and a reflection layer attached on upper surfaces of the light source and the light guide plate. With the light source inserted into the light guide plate, the loss of light is minimized while the horizontal beam angle of light from the LED is increased, minimizing the peripheral area.