| 摘要 |
An LCD backlight driving system includes a light source, which is composed of at least one of each of red, green and blue LED arrays each with a plurality of corresponding color LEDs connected in series, and a substrate on which the red, green and blue LED arrays are disposed to emit white light. The system also includes an SMPS having an AC-DC converter for converting an externally inputted AC voltage to a DC voltage and red, green and blue LED DC-DC converters each converting the DC voltage to a predetermined magnitude of DC voltage suitable for driving the corresponding color LED arrays, respectively. The system further includes a control board having at least one of each of red, green and blue LED constant current controllers for regulating current running through the red, green and blue LED arrays, to maintain predetermined outputs of the red, green and blue LEDs. |
