BACK LIGHT AND ADVERTISEMENT SYSTEM UTILIZING THE SAME FOR REDUCING POWER CONSUMPTION BY USING LED AS LAMP

摘要

PURPOSE: A back light and an advertisement system utilizing the same are provided to improve an effect of advertisement and reduce power consumption by using an LED as a lamp of a back light. CONSTITUTION: At least one circuit board includes a plurality of LEDs for displaying full colors. The LEDs are installed in a preset pattern on the circuit boards. A driver(31) is used for driving selectively the LEDs according to a control signal. An input unit(32) selects light-emitting patterns of the LEDs. A control unit(33) controls each operation of the driver in order to drive the LEDs according to a light-emitting pattern selection signal of the input unit. A reflective layer is formed on a surface of each circuit board in order to reflect the light of the LEDs.