Wavelength conversion device, preparation method thereof and laser light source device

Abstract

The invention relates to the technical field of displaying and discloses a wavelength conversion device, a preparation method thereof and a laser light source device. The wavelength conversion device comprises a rotating plate. The rotating plate comprises a wavelength conversion area for wavelength conversion and a heat dissipation coating made of monomers and heat dissipation particles, wherein the rotating plate is coated with the heat dissipation coating. Because the rotating plate is coated with the heat dissipation coating made of the heat dissipation particles and the monomers, the heat dissipation capability of a unit area is improved through the heat dissipation coating on the rotating plate even though the area of the rotating plate is unchanged and the heat dissipation area is unchanged; the heat dissipation coating can be used at the temperature higher than 350 DEG C for a long time and does not lose weight basically according to comparison of data at 300 DEG C and data at 105 DEG C, thereby being capable of being used at high temperature, and volatile components are few. Thus, the wavelength conversion device is good in heat dissipation effect on the basis of not influencing the light-emitting efficiency.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a wavelength conversion device, a preparation method thereof, and a laser light source device. Background technique [0002] In the laser display system, the wavelength conversion device is used for wavelength conversion. When the laser passes through the wavelength conversion device, it excites the fluorescent material to generate three primary colors of light with different wavelengths from the laser. At present, the commonly used wavelength conversion device is a fluorescent wheel structure. [0003] The structure of the fluorescent wheel is composed of the fluorescent wheel and the drive motor that drives the fluorescent wheel to rotate. The surface of the fluorescent wheel is partially coated with fluorescent material, and the fluorescent material will generate a lot of heat when it is excited to emit light, so that the fluorescent material and even the entire fluorescent wh...

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Problems solved by technology

[0003] The structure of the fluorescent wheel is composed of a fluorescent wheel and a driving motor that drives the fluorescent wheel to rotate. The surface of the fluorescent wheel is partially coated with a fluorescent material, and the fluorescent material generates a lot of heat when it is excited to emit light, so that the fluorescent material and even the entire fluorescent wheel The temperature of the structure rises and finally reaches thermal equilibrium, but as the intensity and power of the laser increase, the temperature of the fluorescent wheel structure will become higher and higher when it reaches thermal equilibrium, and the heat generated by the closed fluorescent wheel structure during work Unable to dissipate in time and effectively, resulting in too high temperature in the closed environment. On the one hand, too high temperature will reduce the service life of the fluorescent wheel structure, which in turn will affect the service life of the entire laser display system. On the other hand, it will also reduce the conversion efficiency of fluorescent light

[0004] In order to achieve good heat dissipation of the fluorescent wheel structure, at present, the following two methods are usually used to enhance heat dissipation. The first method is as follows: figure 1 The open fluorescent wheel structure shown includes a turntable 02, a fluorescent material 03 attached to the turntable 02, and a driving device 01 that drives the turntable 02 to rotate. The open fluorescent wheel structure works in an open environment without any shelter The cover of the body, the heat generated during its work can be dissipated quickly, but because of its open structure, it inevitably faces the problem of dust accumulation, and the existence of dust will affect the luminous efficiency of the fluorescent material, making the entire laser The luminous efficiency of the display system is reduced; in the second way, in the closed fluorescent wheel structure, the heat is dissipated through the heat dissipation path of the fluorescent wheel + fan + radiator, and the heat generated by the fluorescent wheel in the working process is radiated to the inner wall of the protective cover, and then The heat is transmitted to the outer wall of the protective cover, the outer wall guides the heat to the radiator, and then the fan blows the radiator to cool down. Although this cooling method can alleviate the excessive temperature in a closed environment to a certain extent, the devices used Many, low heat dissipation efficiency, narrow application range

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