Title:
WAVELENGTH CONVERSION ELEMENT AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/085259
Kind Code:
A1
Abstract:
A wavelength conversion element (20, 30, 40, 50) and a preparation method therefor. In the wavelength conversion element (20, 30, 40, 50), a plurality of pits (23, 33, 43, 53) in two-dimensional arrangement is formed in a light blocking material (21, 31, 41, 51), and the longitudinal section of each pit (23, 33, 43, 53) is an inverted trapezoid, and the surface roughness of the inner walls of the pits (23, 33, 43, 53) is 0.1-15 μm; a heat dissipation device (45, 55) is connected or inserted from the lower surface of the wavelength conversion element (40, 50) to a wavelength conversion material (42, 52) and/or to a bottom layer (44) having thermal conductivity and light reflection functions, said wavelength conversion material (42, 52) being disposed in the pit (43, 53) and used for generating exited light. In this way, it is easy to implement precise adjustment of the pixel size of the wavelength conversion element (20, 30, 40, 50), and the heat dissipation capability and light exit efficiency of the wavelength conversion element (20, 30, 40, 50) are improved. In addition, the wavelength conversion material (20, 30, 40, 50) and the light blocking material (21, 31, 41, 51) are tightly bonded, and thus good mechanical properties are achieved.
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Inventors:
XU MENGMENG (CN)
CHANG JING (CN)
HU FEI (CN)
ZHOU MENG (CN)
XU YANZHENG (CN)
CHANG JING (CN)
HU FEI (CN)
ZHOU MENG (CN)
XU YANZHENG (CN)
Application Number:
PCT/CN2018/071433
Publication Date:
May 09, 2019
Filing Date:
January 04, 2018
Export Citation:
Assignee:
APPOTRONICS CORP LTD (CN)
International Classes:
G03B21/20; H01L33/50
Foreign References:
| CN107272317A | 2017-10-20 | |||
| CN105684171A | 2016-06-15 | |||
| CN105762239A | 2016-07-13 | |||
| CN106449947A | 2017-02-22 | |||
| CN106030836A | 2016-10-12 | |||
| US20170110636A1 | 2017-04-20 |
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