Light source device and display apparatus

A display apparatus, comprising a light source device and a spatial light modulator, the light source device is configured to emit light to the spatial light modulator, and the spatial light modulator is configured to modulate the light emitted by the light source device according to image data to generate an image light, wherein the light source device comprises:

• an excitation light source, a supplementary light source, and a color wheel, wherein:
• the excitation light source is configured to emit a first color light to the color wheel;
• the color wheel comprises a first light-emitting region, a wavelength conversion region, and a supplementary light-emitting region, the first light-emitting region and the wavelength conversion region are sequentially arranged along a circumferential direction, the first light-emitting region is configured to receive the first color light in a first time period and emit the first color light, and the wavelength conversion region is configured to receive the first color light in a second time period and emit an excited light;
• and
• the supplementary light-emitting region is located on an inner side or an outer side of the wavelength conversion region, and the supplementary light source is configured to emit, during the second time period, a supplementary light that broadens a color gamut and at least partially overlaps with a spectrum of the excited light, and the supplementary light exiting from the supplementary light-emitting region is combined with the excited light exiting from the wavelength conversion region.