Patent ID: 8016476

Claim:
A backlight module, comprising: a frame; a light guide plate disposed in the frame; a light source; and a flexible printed circuit board disposed on the frame and the light guide plate, wherein the flexible printed circuit board comprises: a body, wherein a part of the body is bent, such that a top edge and a bottom edge of the body are respectively disposed on a top side and a bottom side of the frame; a light source carrying portion located at a side of the body and carrying the light source; and a connecting portion having a first end and a second end, wherein the first end is connected to a middle region of a bottom side of the light source carrying portion, the second end is connected to the bottom edge of the body, and the connecting portion is bent, such that the light source carrying portion is disposed on the top side of the frame and the light source is positioned at a side of the light guide plate; wherein the middle region is identified by two boundary such that the distance between one boundary of the middle region and a side of the light source carrying portion is substantially 1.2 times the width of the first end, and the distance between the other boundary of the middle region and the side of the light source carrying portion is substantially 4.2 times the width of the first end.