Patent ID: 8419256

Claim:
A side light type backlight module, comprising: a back plate heat dissipation structure, comprising: a bottom part and at least one side wall part, and the bottom part is a main body of the back plate heat dissipation structure, and the at least side wall part is formed by at least one edge of the bottom part extending upwards from the bottom part; a light guide plate, positioned on the back plate heat dissipation structure; and at least one light source set, positioned at the inner surface of the side wall part and between the side wall part and the light guide plate, wherein the back plate heat dissipation structure of the side light type backlight module further comprises an extension part, comprising: a first horizontal extension part, formed by the top of the side wall part extending outwards horizontally; a first vertical extension part, formed by the outer of the first horizontal extension part extending downwards vertically; a second horizontal extension part, formed by the bottom of the first vertical extension part extending outwards horizontally; and a second vertical extension part, formed by the outer of the second horizontal extension part extending upwards vertically; wherein the first vertical extension part is substantially contiguously attached to the side wall art and the second vertical extension part is substantially contiguously attached to the first vertical extension part, the heat generated by the at least one light source at the side wall part is conducted to the extension part through the top of the side wall part and conducted to the bottom part through the bottom of the side wall part.