公开(公告)号：US11747540B2

公开(公告)日：2023-09-05

申请号：US17776216

申请日：2019-11-12

Applicant: LG ELECTRONICS INC.

Inventor： Geunhwan Kim ,  Juyoung Joung ,  Jungnam An ,  Minho Kim

IPC: F21V8/00

CPC classification number: G02B6/0026 ,  G02B6/0031 ,  G02B6/0066

Abstract: The present invention can be applied to the technical field pertaining to display devices and, for example, relates to a flat lighting device using a light emitting diode (LED) and a display device including same. The present invention provides a display device including a flat lighting device, wherein the display device may comprise: a light source which emits white light by using a light emitting diode and a yellow phosphor; a red phosphor layer which is disposed on the light source and adsorbs a part of the white light emitted from the light source to emit red light; and a first dichroic filter layer which is disposed on the red phosphor layer and has a reflective pattern reflecting at least a part of the long-wavelength side of the wavelength region of the red light.