US 12,119,431 B2
Light emitting device for display and backlight unit including the same
Seongmin Kim, Suwon-si (KR); Jeongeun Yun, Suwon-si (KR); Jeongrok Oh, Suwon-si (KR); Sungwoo Choi, Suwon-si (KR); and Chulsoo Yoon, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Aug. 21, 2023, as Appl. No. 18/236,105.
Claims priority of application No. 10-2022-0111008 (KR), filed on Sep. 1, 2022.
Prior Publication US 2024/0079533 A1, Mar. 7, 2024
Int. Cl. H01L 33/50 (2010.01); F21V 8/00 (2006.01); H01L 25/075 (2006.01)
CPC H01L 33/504 (2013.01) [G02B 6/0073 (2013.01); H01L 25/0753 (2013.01); H01L 33/505 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A light emitting device comprising:
a first light emitter configured to emit second blue light, the first light emitter comprising:
a first light emitting chip configured to emit first blue light having a peak wavelength in a range of about 430 nm to about 465 nm,
at least one of a first phosphor configured to convert part of the first blue light into light having a peak wavelength in a range of about 530 nm to about 560 nm, and a second phosphor configured to convert part of the first blue light into light having a peak wavelength in a range of about 600 nm to about 650 nm; and
a second light emitter configured to emit fourth blue light, the second light emitter comprising:
a second light emitting chip configured to emit third blue light having a peak wavelength in a range of about 465 nm to about 500 nm, and
at least one of a third phosphor configured to convert part of the third blue light into light having a peak wavelength in the range of about 530 nm to about 560 nm, and a fourth phosphor configured to convert part of the third blue light into light having a peak wavelength in the range of about 600 nm to about 650 nm,
wherein a ratio of an intensity of a peak wavelength of the fourth blue light to an intensity of a peak wavelength of the second blue light is greater than or equal to 0.6.