Invention Grant
- Patent Title: Quantum dot and wavelength converting member, lighting member, back light unit, and display device using quantum dot, and method of producing quantum dot
-
Application No.: US16633010Application Date: 2018-07-27
-
Publication No.: US11257981B2Publication Date: 2022-02-22
- Inventor: Kazunori Iida , Emi Tsutsumi , Yuko Ogura , Masanori Tanaka , Soichiro Nikata , Yuka Takamizuma
- Applicant: NS MATERIALS INC.
- Applicant Address: JP Fukuoka
- Assignee: NS MATERIALS INC.
- Current Assignee: NS MATERIALS INC.
- Current Assignee Address: JP Fukuoka
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JPJP2017-145269 20170727,JPJP2017-198667 20171012
- International Application: PCT/JP2018/028192 WO 20180727
- International Announcement: WO2019/022217 WO 20190131
- Main IPC: H01L33/00
- IPC: H01L33/00 ; B82Y40/00 ; H01L33/06 ; B82Y15/00 ; G02F1/13357 ; H01L33/50
Abstract:
The present invention seeks to provide cadmium-free quantum dots with a narrow fluorescence FWHM. The quantum dot does not contain cadmium and its fluorescence FWHM is 30 nm or less. The quantum dot is preferably a nanocrystal containing zinc and tellurium or zinc and tellurium and sulfur or zinc and tellurium and selenium and sulfur. Further, the quantum dot preferably has a core-shell structure in which the nanocrystal serves as a core and the surface of the core is coated with a shell.
Public/Granted literature
Information query
IPC分类:
