Patent ID: 8235541

Claim:
A backlight module, comprising: a circuit board, having a carrying surface; at least one first light emitting diode (LED) device, disposed on the carrying surface of the circuit board and electrically connected to the circuit board; at least one second LED device, disposed on the carrying surface of the circuit board and electrically connected to the circuit board, wherein a brightness of the first LED device is greater than a brightness of the second LED device; and a reflection device, disposed on the circuit board, and exposing the first LED device and the second LED device, the reflection device having at least one first reflection region and at least one second reflection region, wherein the first reflection region is disposed around the first LED device, the second reflection region is disposed around the second LED device, and a reflection ratio of the first reflection region opposite to a light-emitting energy of the first LED device is smaller than a reflection ratio of the second reflection region opposite to a light-emitting energy of the second LED device, wherein the reflection device is a reflective sheet, the reflective sheet has at least one first opening and at least one second opening, the first opening exposes the first LED device, the second opening exposes the second LED device, and a surface area of the first opening is greater than a surface area of the second opening.