US Patent 9474119 Display device and driving method of backlight module

A display device and driving method of a backlight module are disclosed. The display device includes a display panel and a backlight module. The backlight module includes a first light source, a second light source and a control module. The first light source emits a first spectrum with a first stimulus and the second light source emits a second spectrum with a second stimulus. The second stimulus is substantially bigger than the first stimulus. The control module enables the second light source during a first period and enables the first light source during a second period.