Patent ID: 8390756

Claim:
A back light unit comprising: a light guide plate having a rectangle shape, the light guide plate including first and second edges facing each other; a light source having a light element to emit light to the first edge of the light guide plate, the light guide plate emitting incident light from the light source to a liquid crystal display panel as a flat light source; and an elastic frame integrally formed to surround the light guide plate, the elastic frame including first and second frame elements facing each other, wherein the light source is fitted to the first frame element of the elastic frame and the second frame element includes a clip portion to clip the second edge of the light guide plate, wherein the second frame element of the elastic frame includes a bottom plate extending to inside of the elastic frame, a side wall connected to the bottom plate and having a peak element provided on the side wall, and a clip portion formed between the peak element and the bottom plate, and wherein the peak element is formed along a longitudinal direction of the second frame element except for opposite end portions of the second frame element.