Light source device and display equipment

Abstract

A light source device includes an excitation light source, a first color wheel, a second color wheel, and a first color correction film. The first color wheel includes a first wavelength conversion region; the second color wheel includes a second wavelength conversion region and a light processing region; the excitation light source is used for emitting excitation light; the first wavelength conversion region is used for receiving the excitation light and performing wavelength conversion to generate first light; the second wavelength conversion region is used for receiving the excitation lightand performing the wavelength conversion to generate second light; the first color correction film is located between the first color wheel and the second color wheel or on the first color wheel; thefirst color correction film corresponds to the second wavelength conversion region, and is used for receiving the second light emitted by the second wavelength conversion region and filtering out a portion of the second light to perform color correction on the second light; the light processing region is further used for receiving the excitation light and emitting third light; and the first light, the second color after the color correction, and the third light are guided to a light exit channel .

Description

technical field [0001] The present invention relates to the technical field of lighting and display, in particular, to a light source device and a display device. Background technique [0002] At present, laser light sources have been widely used in display (such as projection) and lighting fields. Due to the advantages of high energy density and small etendue, laser light sources have gradually replaced bulbs and LEDs in the field of high-brightness light sources. light source. [0003] In the current projection display technology, the scheme of using laser light source + fluorescent wheel (color wheel) to form RGB three primary color light sources is widely adopted. However, when the laser excites the fluorescent material arranged on the rotating color wheel to generate fluorescence, the fluorescent material is excited to generate fluorescence on the one hand, and on the other hand, a certain power loss will be generated, which will cause the temperature of the fluorescen...

AI Technical Summary

Problems solved by technology

However, when the laser excites the fluorescent material arranged on the rotating color wheel to produce fluorescence, the fluorescent material is excited to produce fluorescence on the one hand, and on the other hand, it will also generate a certain loss of power, which will cause the temperature of the fluorescent material to rise.

The conversion efficiency of fluorescent materials will decrease with the increase of temperature. Therefore, the heat dissipation problem of this scheme needs to be considered. In addition, because the fluorescence produced by phosphors may be insufficient in color and it is difficult to meet the current color gamut standards, further consideration is required. Set the color correction wheel corresponding to the color wheel section to improve the fluorescent color, but the synchronous control of the color correction wheel and the color wheel is also a difficult problem

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