US 11,940,637 B2
Color transformation filter and display device including the same
Sunjin Song, Seoul (KR); Seokho Song, Seoul (KR); Wonjae Joo, Seongnam-si (KR); and Myongjong Kwon, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR); and IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY), Seoul (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR); and IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY), Seoul (KR)
Filed on Feb. 7, 2022, as Appl. No. 17/666,084.
Claims priority of application No. 10-2021-0122769 (KR), filed on Sep. 14, 2021.
Prior Publication US 2023/0082071 A1, Mar. 16, 2023
Int. Cl. H10K 59/35 (2023.01); G02B 5/22 (2006.01); H10K 59/121 (2023.01); H10K 59/123 (2023.01)
CPC G02B 5/223 (2013.01) [H10K 59/1213 (2023.02); H10K 59/123 (2023.02); H10K 59/35 (2023.02)] 28 Claims
OG exemplary drawing
 
1. A color transformation filter comprising:
a plurality of nanostructures included in a subpixel and spaced apart from each other, the plurality of nanostructures having a first refractive index;
a low refractive index layer provided adjacent to the plurality of nanostructures, the low refractive index layer having a second refractive index less than the first refractive index; and
a color transformation element included in the low refractive index layer,
wherein lower surfaces of the plurality of nanostructures and a lower surface of the low refractive index layer are located on a same plane.