Title:
WAVELENGTH CONVERSION DEVICE AND LIGHT EMITTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/061818
Kind Code:
A1
Abstract:
A wavelength conversion device (100) and light emitting device. The wavelength conversion device (100) comprises: a thermally conductive substrate (101), a reflective film layer (102) provided on the thermally conductive substrate (101), a light emitting layer (104) provided on the reflective film layer (102), and an adhesion layer (103) provided between the reflective film layer (102) and the light emitting layer (104). The adhesion layer (103) is composed of an adhesive blended with a first wavelength conversion material, wherein the first wavelength conversion material can emit red light having a wavelength in a range of 550-650 nm. The light emitting layer (104) comprises a yellow light emitting material having a light emission wavelength shorter than that of the adhesion layer (103). The wavelength conversion device (100) further improves light emission efficiency of monochromatic red light, and has superior reliability.
Inventors:
CHEN YUSAN (CN)
LI QIAN (CN)
XU YANZHENG (CN)
LI QIAN (CN)
XU YANZHENG (CN)
Application Number:
PCT/CN2017/114748
Publication Date:
April 04, 2019
Filing Date:
December 06, 2017
Export Citation:
Assignee:
APPOTRONICS CORP LTD (CN)
International Classes:
F21V9/40
Foreign References:
| CN102410499A | 2012-04-11 | |||
| CN106195925A | 2016-12-07 | |||
| CN105301878A | 2016-02-03 | |||
| CN205447345U | 2016-08-10 | |||
| CN1547266A | 2004-11-17 | |||
| JP2016061852A | 2016-04-25 |
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