Title:
RED LIGHT EMITTING MODULE AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/093564
Kind Code:
A1
Abstract:
A red light emitting module and a preparation method therefor, The preparation method comprises: providing a high heat conducting substrate; mixing first low-melting-point glass powder and inorganic diffuse reflection particles, coating the mixture on the high heat conducting substrate, and then performing sintering to form a diffuse reflection layer; and coating an inorganic slurry, formed by mixing second low-melting-point glass powder and red nitride powder, on the diffuse reflection layer and then performing sintering to form a red light glass layer, the proportion of the red nitride powder in the inorganic slurry being not less than 25%, wherein the viscous flow temperature of the second low-melting-point glass powder is less than 600°C, the sintering temperature of the second low-melting-point glass powder is less than 600°C, and the thermal expansion coefficient of the second low-melting-point glass powder is less than 10*10-6/K. The red light emitting module prepared by the method has higher excitation efficiency.
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Inventors:
TIAN ZIFENG (CN)
XU HU (CN)
DENG GENHUA (CN)
XU HU (CN)
DENG GENHUA (CN)
Application Number:
PCT/CN2020/123804
Publication Date:
May 20, 2021
Filing Date:
October 27, 2020
Export Citation:
Assignee:
YLX INC (CN)
International Classes:
F21V9/08; C03C4/12
Domestic Patent References:
| WO2019009165A1 | 2019-01-10 |
Foreign References:
| CN104595852A | 2015-05-06 | |||
| CN109545910A | 2019-03-29 | |||
| CN110156326A | 2019-08-23 | |||
| CN110118312A | 2019-08-13 | |||
| CN104100933A | 2014-10-15 | |||
| KR20120009859A | 2012-02-02 |
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