| 摘要 |
The present invention relates to a backlight structure. The backlight structure includes: a plate-shaped light guide part in which a plurality of main column grooves penetrating toward a non-radiative surface and covered in the direction of a light-emitting surface are formed at the same distance to each other, wherein a center line of the main column grooves faces the light-emitting surface; a plurality of light sources disposed on one side of the light guide part so as to emit light onto the main column grooves of the light guide part; reflective bodies disposed around the light sources, respectively, so as to allow the light of the light sources to be spotlighted onto the main column grooves of the light guide part; and a reflector disposed on the non-radiative surface of the light guide part so as to reflect the light emitted onto the non-radiative surface toward the light-emitting surface. Further, auxiliary column grooves penetrating toward the non-radiative surface and covered in the direction of the light-emitting surface are formed in the light guide part between the main column grooves. The diameter of each of the auxiliary column grooves is smaller than that of each of the main column grooves. Also, the number of auxiliary column grooves of the light guide part may be gradually increased in a direction extending away from the light sources. Thus, since the light of the light sources is emitted in a spotlight manner from one side surface of the light guide part up to the other side surface, bright light may be emitted onto an entire surface of the light guide part. Also, since the main column grooves and the auxiliary column grooves are densely formed gradually in the direction extending away from the light sources of the light guide part, a light contact area and the reflectance of the light guide part may be further increased in the direction extending away from the light sources so as to prevent the intensity of illumination from being reduced in the light guide part located remotely to the light sources. |
