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Red light emitting module and preparation method thereof

A light-emitting module, red light technology, applied in the laser field, can solve the problem of low laser excitation efficiency, and achieve the effects of improving reliability, high excitation efficiency, and high luminous brightness

Pending Publication Date: 2021-05-14
YLX INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a red light-emitting module and its preparation method to solve the problem of low excitation efficiency of laser in the red fluorescent layer in the prior art

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  • Red light emitting module and preparation method thereof
  • Red light emitting module and preparation method thereof
  • Red light emitting module and preparation method thereof

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Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] In addition, if there are descriptions involving "first", "second" and so on in the embodiments of the present invention, the descriptions of "first", "second" and so on are only for descriptive purposes, and should not be interpreted as indicating or implying Its relative importance or implicitly indicates the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of ...

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Abstract

The invention discloses a red light emitting module and a preparation method thereof. The preparation method comprises the following steps: providing a high-thermal-conductivity substrate; mixing first low-melting-point glass powder with inorganic diffuse reflection particles, coating the mixture on a high-thermal-conductivity substrate, and sintering to form a diffuse reflection layer; mixing and coating inorganic slurry formed by mixing second low-melting-point glass powder and nitride red powder on the diffuse reflection layer and then sintering to form a red light glass layer, wherein the proportion of the nitride red powder in the inorganic slurry is not lower than 25%; wherein the viscous flow temperature of the second low-melting-point glass powder is less than 600 DEG C, the sintering temperature of the second low-melting-point glass powder is less than 600 DEG C, and the thermal expansion coefficient of the second low-melting-point glass powder is less than 10*10<-6> / K. Through the mode, the red light emitting module prepared by the invention has higher excitation efficiency.

Description

technical field [0001] The invention relates to the field of lasers, in particular to a red light emitting module and a preparation method thereof. Background technique [0002] In the existing remote excitation phosphor technology, the red phosphor has become a technical bottleneck in the field of laser display due to the serious thermal quenching problem. In low-power excitation light and low-brightness products, silica gel encapsulation is mainly used; but in high-power excitation light sources and high-brightness products, it can only be obtained by modifying and filtering the emitted light of yellow phosphor with longer wavelength. ; However, with the development of laser projection products, it is required to upgrade the products to the direction of small size, high brightness and high efficiency. This means that the size of the wavelength conversion device inside is getting smaller and smaller, and the laser power density borne by the light-emitting layer is getting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/50H01L33/56H01L33/64C04B41/89
CPCH01L33/502H01L33/56H01L33/641C04B41/89C04B41/52C04B41/4545C04B41/5022C04B41/5041C04B41/5031C04B41/5045C04B41/5049C04B41/5014C04B41/0072C04B41/5062H01L33/50H01L33/64C03C4/12F21V9/08
Inventor 田梓峰徐虎邓艮花
Owner YLX INC
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