Patent ID: 8730425

Claim:
A liquid crystal display device, comprising: a liquid crystal panel; a backlight unit disposed under the liquid crystal panel and providing a light to the liquid crystal panel, the backlight unit including a reflective sheet, a light guide plate on the reflective sheet, an optical sheet on the light guide plate, and a light emitting diode (LED) assembly at one side of the light guide plate, the light emitting diode assembly including at least one LED as a light source, wherein the light guide plate has a part which is not covered with the optical sheet; a main frame that surrounds sides of the liquid crystal panel and the backlight unit, the main frame including a first portion, where the LED assembly is fixed, and a second portion extending from the first portion, the second portion covering a top portion of the LED assembly; a bottom frame under the reflective sheet, the bottom frame being combined with the main frame; and a top frame that surrounds an edge of the liquid crystal panel and attaches to the bottom frame and the main frame and wherein the light guide plate includes a first groove at the one side neighboring the part, and the main frame includes a second groove through the second portion, and wherein the bottom frame includes a column-shaped protruding body and a third groove through the column-shaped protruding body, and a first screw is inserted through the first, second and third grooves.