US 11,675,231 B2
Composition for light conversion layer, light conversion layer and electronic device including the same
Baek Hee Lee, Seoul (KR); Donghee Lee, Hwaseong-si (KR); Sun-Young Hong, Suwon-si (KR); Juho Kim, Pyeongtaek-si (KR); Hyungjoo Kim, Pyeongtaek-si (KR); and Jongsoo Lee, Suwon-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR); and DONGWOO FINE-CHEM CO., LTD., Iksan-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR); and DONGWOO FINE-CHEM CO., LTD., Iksan-si (KR)
Filed on Nov. 19, 2019, as Appl. No. 16/688,882.
Prior Publication US 2020/0201124 A1, Jun. 25, 2020
Int. Cl. G02F 1/1335 (2006.01); C08L 33/08 (2006.01); C08K 5/37 (2006.01); C08K 5/372 (2006.01); G02F 1/13357 (2006.01); B82Y 20/00 (2011.01)
CPC G02F 1/133621 (2013.01) [C08K 5/372 (2013.01); C08L 33/08 (2013.01); B82Y 20/00 (2013.01); G02F 1/133614 (2021.01); G02F 2202/023 (2013.01); G02F 2202/36 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A composition for a light conversion layer, the composition comprising:
a base resin;
quantum dots;
a thiol compound comprising at least one thiol group in a molecule;
a thermal curing agent comprising at least one of a polyfunctional alicyclic epoxy resin, a novolak epoxy resin and a silane epoxy resin; and
a scattering particle, wherein
the base resin is a copolymer formed of an unsaturated imide compound,
the quantum dots include a first quantum dot emitting light in a wavelength region of 520 nm to 550 nm and a second quantum dot emitting light in a wavelength region of 620 nm to 650 nm,
an amount of the first quantum dot is 2 to 10 times of an amount of the second quantum dot based on weight,
the thiol compound is comprised in 13 wt % to 40 wt % based on 100 wt % of a total solid content of the composition for the light conversion layer,
the thermal curing agent is comprised in 10 wt % to 40 wt % based on 100 wt % of the total solid content of the composition for the light conversion layer,
the scattering particle is comprised in 0.5 wt % to 20 wt % based on 100 wt % of the total solid content of the composition for the light conversion layer,
the total solid content of the composition for the light conversion layer comprises the base resin, the quantum dots, the thiol compound, the thermal curing agent, and the scattering particle, and
the thiol compound is represented by Formula 1:

OG Complex Work Unit Chemistry
wherein in Formula 1,
Rs is a hydrogen atom, a deuterium atom, or a substituted or unsubstituted alkyl group of 1 to 12 carbon atoms,
Rp is a substituted or unsubstituted alkylene group of 1 to 12 carbon atoms,
Rq is a substituted or unsubstituted alkyl group of 1 to 12 carbon atoms, a substituted or unsubstituted alkoxy group of 1 to 12 carbon atoms, or a substituted or unsubstituted heterocyclic group of 2 to 6 carbon atoms for forming a ring, and
n is an integer of 2 to 6.