Liquid crystal display and backlight module thereof

A backlight module, comprising:

• a light source for emitting light beams;
• a light guide plate for receiving and transferring the light beams;
• a reflector disposed behind the light guide plate;
• and
• a quarter-wave plate for changing a polarization state of the light beams;
• wherein the light source is disposed adjacent to the light guide plate, and the reflector, the light guide plate and the quarter-wave plate are stacked together in order.

A method of making a liquid crystal display system, comprising steps of:

• providing a liquid crystal panel;
• providing a backlight module located behind the liquid crystal panel and including a light source with a light guide plate beside said light source, a quarter-wave plate and a reflector located in front of and behind said light guide plate, respectively;
• and
• providing one reflective polarizing element on a rear portion of the liquid crystal panel and in front of the quarter-wave plate;
• wherein
• reflection occurs on said reflector and said reflective polarizing element, respectively.