A laser light source for a laser display system, the laser light source comprising: a red light semiconductor laser module, the wavelength of the laser output by the red light semiconductor laser module being in the range from 635 nm to 670 nm; a green light semiconductor laser module, the wavelength of the laser output by the green light semiconductor laser module being in the range from 515 nm to 530 nm; a blue light semiconductor laser module, the wavelength of the laser output by the blue light semiconductor module being in the range 440 nm to 460 nm; and a semiconductor laser control module; wherein the red light semiconductor laser module comprises at least two red light semiconductor laser units having different central wavelengths, wherein the combination of the central wavelengths of the red light semiconductor laser units covers the wavelength range of the laser output by the red light semiconductor laser module, wherein the green light semiconductor laser module comprises at least two green light semiconductor laser units having different central wavelengths, wherein the combination of the central wavelengths of the green light semiconductor laser units covers the wavelength range of the laser output by the green light semiconductor laser module, wherein the blue light semiconductor laser module comprises at least two blue semiconductor laser units having different central wavelengths, wherein the combination of the central wavelengths of the blue light semiconductor laser units covers the wavelength range of the laser output by the blue light semiconductor laser module, wherein the semiconductor laser control module is configured to control the red light semiconductor laser units in the red light semiconductor laser module, the green light semiconductor laser units in the green light semiconductor laser module and the blue light semiconductor laser units in the blue light semiconductor laser module; characterized in that the semiconductor laser control module is further configured to select, for each semiconductor laser module, one semiconductor laser unit, wherein the combination of central wavelengths of the three selected semiconductor laser units forms a chromatic triangle, and wherein a color range covered by the chromatic triangle covers a color region corresponding to color requirements of the laser display system. a red light semiconductor laser module, the wavelength of the laser output by the red light semiconductor laser module being in the range from 635 nm to 670 nm; a green light semiconductor laser module, the wavelength of the laser output by the green light semiconductor laser module being in the range from 515 nm to 530 nm; a blue light semiconductor laser module, the wavelength of the laser output by the blue light semiconductor module being in the range 440 nm to 460 nm; and a semiconductor laser control module; wherein the red light semiconductor laser module comprises at least two red light semiconductor laser units having different central wavelengths, wherein the combination of the central wavelengths of the red light semiconductor laser units covers the wavelength range of the laser output by the red light semiconductor laser module, wherein the green light semiconductor laser module comprises at least two green light semiconductor laser units having different central wavelengths, wherein the combination of the central wavelengths of the green light semiconductor laser units covers the wavelength range of the laser output by the green light semiconductor laser module, wherein the blue light semiconductor laser module comprises at least two blue semiconductor laser units having different central wavelengths, wherein the combination of the central wavelengths of the blue light semiconductor laser units covers the wavelength range of the laser output by the blue light semiconductor laser module, wherein the semiconductor laser control module is configured to control the red light semiconductor laser units in the red light semiconductor laser module, the green light semiconductor laser units in the green light semiconductor laser module and the blue light semiconductor laser units in the blue light semiconductor laser module; characterized in that the semiconductor laser control module is further configured to select, for each semiconductor laser module, one semiconductor laser unit, wherein the combination of central wavelengths of the three selected semiconductor laser units forms a chromatic triangle, and wherein a color range covered by the chromatic triangle covers a color region corresponding to color requirements of the laser display system.