US 12,471,477 B2
Display apparatus and electronic apparatus including the same
Joonghyuk Kim, Suwon-si (KR); Taegon Kim, Suwon-si (KR); Shinae Jun, Suwon-si (KR); Hyeonho Choi, Suwon-si (KR); Seungyeon Kwak, Suwon-si (KR); Jiwhan Kim, Suwon-si (KR); and Sunghun Lee, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Feb. 2, 2023, as Appl. No. 18/163,493.
Claims priority of application No. 10-2022-0097580 (KR), filed on Aug. 4, 2022.
Prior Publication US 2024/0057434 A1, Feb. 15, 2024
Int. Cl. H10K 59/38 (2023.01); C09K 11/02 (2006.01); C09K 11/06 (2006.01); C09K 11/08 (2006.01); C09K 11/88 (2006.01); H10K 85/30 (2023.01); B82Y 20/00 (2011.01)
CPC H10K 59/38 (2023.02) [C09K 11/02 (2013.01); C09K 11/06 (2013.01); C09K 11/0883 (2013.01); C09K 11/883 (2013.01); H10K 85/346 (2023.02); B82Y 20/00 (2013.01); C09K 2211/1007 (2013.01); C09K 2211/1014 (2013.01); C09K 2211/1022 (2013.01); C09K 2211/1029 (2013.01); C09K 2211/1044 (2013.01); C09K 2211/185 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display apparatus, comprising:
a substrate comprising at least one blue light-emitting unit; and
a color control portion provided on the substrate and configured to control a color of a light generated at the substrate,
wherein the color control portion comprises a first color control element, wherein the first color control element comprises a first quantum dot for a green color conversion,
the at least one blue light-emitting unit comprises an emission layer, wherein the emission layer comprises a host, a first dopant, and a second dopant,
the emission layer exhibits an emission spectrum comprising a first emission peak and a second emission peak,
the first color control element exhibits an absorption spectrum comprising a first absorption peak and a first absorption valley,
the first dopant has a lowest triplet excitation energy and a lowest singlet excitation energy,
the second dopant has a lowest triplet excitation energy and a lowest singlet excitation energy,
the first emission peak, the second emission peak, the first absorption peak, and the first absorption valley satisfy Conditions 1-1 to 1-3, and
the first dopant and the second dopant satisfy Conditions 2-1 and 2-2:
about 430 nanometers≤λBEM1≤about 500 nanometers;  Condition 1-1
about 430 nanometers≤λABP1≤about 550 nanometers;  Condition 1-2
λABVL1+FWQMBEM1≤λBEM1≤λABP1;  Condition 1-3
T1(D1)≥T1(D2);  Condition 2-1
T1(D1)≥S1(D2),  Condition 2-2
wherein, in Conditions 1-1 to 1-3 and 2-1 to 2-2,
λABP1 is the first absorption peak,
λABVL1 is the first absorption valley,
λBEM1 is the first emission peak,
T1(D1) is the lowest triplet excitation energy of the first dopant,
S1(D1) is the lowest singlet excitation energy of the first dopant,
T1(D2) is the lowest triplet excitation energy of the second dopant,
S1(D2) is the lowest singlet excitation energy of the second dopant, and
FWQMBEM1 represents a full width at quarter maximum of the first emission peak.