Method and light emitting diode backlight system with adjustable color gamut

An operating method of backlight system, the method comprising:

• providing at least one of WLEDs and at least one multicolored LED units to generate a light source;
• providing a preset first setting value for a driving control system to automatically provide a plurality of driving signals of the light source according to the first setting value or providing a second setting value input by user, for the driving control system to provide a plurality of driving signals of the light source according to the second setting value;
• and
• adjusting driving signals of the light source so that the light source provides desired color gamut and white point, wherein the light source emits white light and the at least one multicolored LED units comprise combination of red light, green light and blue light LED or any or any multicolored LED combinations that are able to mix up white light.

A display system with adjustable color gamut, the display system comprising:

• a liquid display panel;
• and
• a lighting system generating backlight, comprising:
• a lighting structure having a light source, wherein the light source configuring at least one WLED and at least one multicolored LED unit to obtain a layout of the lighting structure, wherein the at least one multicolored LED units comprise combinations of red light, green light and blue light LEDs or any multicolored LED combinations that are able to mix up white light;
• and
• a driving control system for automatically providing a plurality of driving signals of the light source according to a preset first setting value or providing a plurality of driving signals of the light source according to a second setting value of user input.

A display system with adjustable color gamut according to environment luminance, the display system comprising:

• a liquid display panel;
• and
• a lighting system generating backlight, comprising:
• a lighting structure having a light source, wherein the light source configuring at least one WLED and at least one multicolored LED unit to obtain a layout of the lighting structure, wherein the at least one multicolored LED units comprise combinations of red light, green light and blue light LEDs or any multicolored LED combinations that are able to mix up white light;
• and
• a driving control system for automatically providing a plurality of driving signals of the light source according to a preset first setting value or providing a plurality of driving signals of the light source according to a second setting value of user input;
• a light sensing device, the feedback device for sensing ambient brightness, and adjusting driving signals of the WLED and multicolored LED unit in the light source according to sensing result.