US 12,439,798 B2
Display device with improved color filter
Chang Soon Jang, Seoul (KR); In Ok Kim, Osan-si (KR); Chan Su Kim, Asan-si (KR); Gak Seok Lee, Hwaseong-si (KR); Sang Hun Lee, Hwaseong-si (KR); So Yun Lee, Seoul (KR); and Ji Eun Jang, Suwon-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Aug. 29, 2022, as Appl. No. 17/897,386.
Claims priority of application No. 10-2021-0164827 (KR), filed on Nov. 25, 2021.
Prior Publication US 2023/0165102 A1, May 25, 2023
Int. Cl. H10K 59/38 (2023.01); G02B 5/20 (2006.01); H10K 50/86 (2023.01); H10K 59/122 (2023.01)
CPC H10K 59/38 (2023.02) [H10K 50/865 (2023.02); G02B 5/201 (2013.01); H10K 59/122 (2023.02)] 17 Claims
OG exemplary drawing
 
1. A display device comprising:
a display area;
a non-display area;
a display substrate;
a color conversion substrate disposed on the display substrate, wherein
the display substrate includes:
a first base portion; and
a light emitting element disposed in the display area on the first base portion,
the color conversion substrate includes:
a second base portion facing the first base portion; and
a color filter layer disposed between the second base portion and the light emitting element,
the display area includes a first light emitting area emitting first light,
the color filter layer includes a first color filter disposed in the first light emitting area, and
the first color filter includes at least two layers, the at least two layers including a first layer and a second layer disposed between the first layer and the second base portion,
the first layer and the second layer are different from each other,
the first layer includes a first base resin and a first colorant dispersed in the first base resin, and
the second layer includes a second base resin and a second colorant dispersed in the second base resin.