US 11,809,040 B2
Display device
Yong Wook Kim, Yongin-si (KR); Soo Kyung Kwon, Suwon-si (KR); and Jaeyong Lee, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Apr. 21, 2022, as Appl. No. 17/726,033.
Claims priority of application No. 10-2021-0052476 (KR), filed on Apr. 22, 2021.
Prior Publication US 2022/0342259 A1, Oct. 27, 2022
Int. Cl. G02F 1/1335 (2006.01); G02F 1/13357 (2006.01)
CPC G02F 1/133603 (2013.01) [G02F 1/133514 (2013.01); G02F 1/133617 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A display device, comprising
a display panel, a backlight unit, and a light conversion sheet between the display panel and the backlight unit,
wherein the backlight unit comprises a substrate and a plurality of light-emitting sections arranged on the substrate and facing the light conversion sheet, at least one light source is disposed in each of the plurality of light-emitting sections,
the light conversion sheet comprises a plurality of first partition walls and a plurality of light conversion sections arranged to correspond to the plurality of light-emitting sections, a first partition wall of the plurality of first partition walls is disposed between adjacent light conversion sections of the plurality of light conversion sections,
each light conversion section of the plurality of light conversion sections comprises first quantum dots emitting a first light and second quantum dots emitting a second light having a color different from a color of the first light, and the first quantum dots and the second quantum dots are mixed in the each light conversion section,
the at least one light source is configured to provide light of a predetermined wavelength to the light conversion sheet,
the substrate comprises a second partition wall disposed to define the plurality of light-emitting sections, and
the first partition wall is not disposed over the plurality of light-emitting sections.