Invention Grant
- Patent Title: Fluorescent substance and a production method therefor
- Patent Title (中): 荧光物质及其制备方法
-
Application No.: US13985398Application Date: 2012-02-06
-
Publication No.: US09120973B2Publication Date: 2015-09-01
- Inventor: Hyong Sik Won , Seong Min Kim , Chan Suk Min , Chul Soo Yoon
- Applicant: Hyong Sik Won , Seong Min Kim , Chan Suk Min , Chul Soo Yoon
- Applicant Address: KR Suwon Si
- Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee Address: KR Suwon Si
- Agency: Sughrue Mion, PLLC
- Priority: KR10-2011-0012712 20110214
- International Application: PCT/KR2012/000844 WO 20120206
- International Announcement: WO2012/111929 WO 20120823
- Main IPC: C09K11/08
- IPC: C09K11/08 ; C09K11/66 ; C09K11/77

Abstract:
The fluorescent substance according to one embodiment of the present invention has the following compositional formula (1): [Compositional formula 1] SrySi(6−z)AlzOzN(8−z):Rex. Here, x, y and z are respectively 0.005≦x≦0.05, 0.05≦y≦0.5, 0.001≦z≦0.50, and Re is a rare earth element. As a result, the fluorescent substance according to one embodiment of the present invention can exhibit a short wavelength of between 525 nm and 537 nm when the concentration of strontium is between 0.05 moles and 0.5 moles. Also, the fluorescent substance can exhibit a short wavelength of between 525 nm and 537 nm by the addition of barium in a range of between 0.003 moles and 0.125 moles when the concentration of aluminium is high. Also, the fluorescent substance can exhibit a short wavelength of between 525 nm and 537 nm by adjusting the oxygen concentration by the addition not only of AlN but also of Al2O3 as an aluminium precursor when the concentration of aluminium is high. Ultimately, since the fluorescent substance according to one embodiment of the present invention can exhibit a short wavelength of between 525 nm and 537 nm, it is possible to prevent dropoff in colour reproduction and the colour rendering index.
Public/Granted literature
- US20140048742A1 FLUORESCENT SUBSTANCE AND A PRODUCTION METHOD THEREFOR Public/Granted day:2014-02-20
Information query