Backlight unit and liquid crystal display device including the same

A backlight unit comprising:

• a light guide panel;
• a light source part disposed at a side of the light guide panel to emit a light;
• an optical sheet disposed at a front surface of the light guide panel to change a traveling direction of the light, transferred from the light guide panel, to a direction vertical to the light guide panel;
• a guide panel separated from an end of the optical sheet, and configured to guide the light guide panel, the light source part, and the optical sheet;
• a reflector disposed at a rear surface of the light guide panel to reflect the light, transferred through the light guide panel, toward the front surface of the light guide panel;
• a side reflector adhered to a side of the light guide panel;
• and
• a cover bottom coupled to the guide panel, and in which the reflector is disposed,
• wherein a region of the side reflector, corresponding to a catching part formed at the optical sheet, is cut.

A backlight unit comprising:

• a light guide panel;
• a light source part disposed at a side of the light guide panel to emit a light;
• an optical sheet disposed at a front surface of the light guide panel to change a traveling direction of the light, transferred from the light guide panel, to a direction vertical to the light guide panel;
• a guide panel separated from an end of the optical sheet, and configured to guide the light guide panel, the light source part, and the optical sheet;
• a reflector disposed at a rear surface of the light guide panel to reflect the light, transferred through the light guide panel, toward the front surface of the light guide panel, wherein a reflector light absorbing material is coated on a region of the reflector corresponding to a gap between the guide panel and the optical sheet;
• a side reflector adhered to a side of the light guide panel;
• and
• a cover bottom coupled to the guide panel, and in which the reflector is disposed.

A liquid crystal display (LCD) device comprising:

• a backlight;
• a liquid crystal panel disposed on the backlight unit to display an image;
• and
• a tempered glass adhered to a front surface of the liquid crystal panel,
• wherein the backlight unit comprises:
• a light guide panel;
• a light source part disposed at a side of the light guide panel to emit a light;
• an optical sheet disposed at a front surface of the light guide panel to change a traveling direction of the light, transferred from the light guide panel, to a direction vertical to the light guide panel;
• a guide panel separated from an end of the optical sheet, and configured to guide the light guide panel, the light source part, and the optical sheet;
• a reflector disposed at a rear surface of the light guide panel to reflect the light, transferred through the light guide panel, toward the front surface of the light guide panel;
• a side reflector adhered to a side of the light guide panel;
• and
• a cover bottom coupled to the guide panel, and in which the reflector is disposed.