公开(公告)号：US20170219759A1

公开(公告)日：2017-08-03

申请号：US15321643

申请日：2015-02-25

Applicant: LG ELECTRONICS INC.

Inventor： Jinmok OH ,  Byoungkwon CHO ,  Moongoo CHOI

IPC: F21V8/00

CPC classification number: G02B6/0026 ,  G02B6/001 ,  G02B6/005 ,  G02F1/133308 ,  G02F1/1336 ,  G02F1/133603 ,  G02F1/133609 ,  G02F1/133617 ,  G02F2001/133614 ,  G02F2001/133624

Abstract: The present invention provides a backlight unit capable of realizing a wide color gamut of a display device by reduction of the spectral half-width of light. The backlight unit provided by the present invention comprises: a light source which is formed so as to provide primary light; a quantum dot phosphor which is excited by the primary light provided from the light source and emits secondary light having a wavelength different from the wavelength of the primary light, the quantum dot phosphor being arranged so as to be spaced apart from the light source; and a light cutting agent which absorbs light of a specific wavelength from the primary light or the secondary light.