Light emitting diode light source module

1. A light emitting diode (LED) light source module, comprising:

plural voltage converters to convert an input voltage into plural corresponding different operation voltages;

a plurality of sets of different color LED strings, wherein each set of the plurality of sets has plural LED strings of a corresponding color, the plurality of sets to receive the corresponding different operation voltages;

a plurality of constant current controllers, respectively serially connected to the corresponding LED strings, for respectively controlling currents passing through the corresponding LED strings to achieve a target luminance; and

a dimming controller, coupled to the constant current controllers, the dimming controller to control currents of the constant current controllers to regulate luminance of the corresponding color LED strings.

2. The module of claim 1 , wherein each of the constant current controllers is coupled between the corresponding voltage converter and the corresponding LED string.

3. The module of claim 1 , wherein each of the constant current controllers is disposed in a corresponding LED string between LEDs of the corresponding LED string.

4. The module of claim 1 , further comprising an AC/DC converter for transforming an AC voltage into the input voltage, wherein the input voltage comprises a DC voltage.

5. The module of claim 4 , wherein the AC/DC converter comprises a power factor corrector (PFC).

6. The module of claim 1 , wherein the voltage converters comprise constant current functions.

7. The module of claim 1 , wherein the plural voltage converters comprise a first color voltage converter to transform an AC voltage into a first color operation voltage, wherein the input voltage comprises the AC voltage, and wherein the plural voltage converts further comprise a second color voltage converter to transform the AC voltage into a second, different color operation voltage.

8. The module of claim 1 , wherein the plural voltage converters comprise DC-DC voltage converters.

9. The module of claim 1 , wherein the plurality of sets include first, second, and third sets, wherein the first set of LED strings is to receive a first of the operation voltages, the second set of LED strings is to receive a second of the operation voltages, and the third set of LED strings is to receive a third of the operation voltages.

10. The module of claim 1 , wherein each of the LED strings includes plural LEDs connected in series.

11. A liquid crystal display, comprising:

a panel; and

a backlight module positioned proximate the panel, comprising:

plural voltage converters to convert an input voltage into plural corresponding different operation voltages;

a plurality of sets of different color LED strings, wherein each set of the plurality of sets has plural LED strings of a corresponding color, and each set of the plurality of sets is to receive a corresponding different one of the operation voltages;

a plurality of constant current controllers, respectively serially connected to the corresponding LED strings, for respectively controlling currents passing through the corresponding LED strings to achieve a target luminance; and

a dimming controller, coupled to the constant current controllers, the dimming controller to control currents of the constant current controllers to regulate luminance of the corresponding color LED strings.

12. The liquid crystal display of claim 11 , wherein the backlight module further comprises an AC/DC converter to convert an AC voltage into a DC voltage, wherein the input voltage comprises the DC voltage.

13. The liquid crystal display of claim 12 , wherein the AC/DC converter comprises a power factor corrector (PFC).

14. The liquid crystal display of claim 11 , wherein the voltage converters comprise constant current functions.

15. The liquid crystal display of claim 11 , wherein the sets of different color LED strings comprise a first set of first color LED strings and a second set of second color LED strings, and wherein the plural voltage converters comprise a first DC-DC voltage converter to produce a first one of the operating voltages that is received by the first set of LED strings, and a second DC-DC voltage converter to produce a second one of the operating voltages that is received by the second set of LED strings.

16. The liquid crystal display of claim 11 , wherein each of the LED strings includes plural LEDs connected in series.

17. A method for use in a backlight module, comprising:

receiving, by plural voltage converters in the backlight module, an input voltage;

transforming, by the plural voltage converters, the input voltage into plural corresponding different operating voltages;

providing the plural different operation voltages to plural corresponding sets of different color light emitting diode (LED) strings, wherein each set of the plural sets has plural LED strings of a corresponding color;

controlling currents passing through the corresponding LED strings to achieve a target luminance by a plurality of constant current controllers, the constant current controllers respectively serially connected to the corresponding LED strings; and

control currents of the constant current controllers to regulate luminance of the corresponding color LED strings by a dimming controller coupled to the constant current controllers.

18. The method of claim 17 , wherein transforming the input voltage into plural different operation voltages comprises transforming an input DC voltage provided by an AC/DC converter.

19. The method of claim 17 , wherein transforming the input voltage into plural different operation voltages comprises transforming an input AC voltage into the plural different operation voltages.

20. The method of claim 17 , wherein each of the LED strings includes plural LEDs connected in series.