US 12,225,745 B2
Quantum-dot display substrate and method for preparing the same, and display device
Boris Kristal, Beijing (CN)
Assigned to BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/280,118
Filed by BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Jul. 1, 2020, PCT No. PCT/CN2020/099726
§ 371(c)(1), (2) Date Mar. 25, 2021,
PCT Pub. No. WO2021/000891, PCT Pub. Date Jan. 7, 2021.
Claims priority of application No. 201910593843.X (CN), filed on Jul. 3, 2019.
Prior Publication US 2022/0006032 A1, Jan. 6, 2022
Int. Cl. H01L 51/50 (2006.01); H01L 27/32 (2006.01); H01L 51/56 (2006.01); H10K 50/115 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 50/17 (2023.01); H10K 59/12 (2023.01); H10K 71/00 (2023.01)
CPC H10K 50/115 (2023.02) [H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/171 (2023.02); H10K 59/12 (2023.02); H10K 71/00 (2023.02); H10K 59/1201 (2023.02)] 17 Claims
OG exemplary drawing
 
1. A quantum dot display substrate, comprising a first electrode, a second electrode, and a quantum-dot-emitting layer located between the first electrode and the second electrode, wherein the quantum-dot-emitting layer comprises: a DNA single-stranded structure of a specific pattern, with quantum dots attached to the DNA single-stranded structure,
wherein the DNA single-stranded structure of the specific pattern comprises:
long single-stranded DNA molecules having a length of greater than 30 nm and less than 1000 microns, with a plurality of quantum dots in different colors attached to different long single-stranded DNA molecules respectively; and
a staple DNA molecule, through which the long single-stranded DNA molecules are folded into the specific pattern,
wherein the DNA single-stranded structure of the specific pattern comprises a plurality of DNA tile structures, and each of the plurality of DNA tile structures comprises:
a plurality of first long single-stranded DNA molecules for forming a pattern scaffold of the specific pattern;
a plurality of second staple DNA molecules connected to the plurality of first long single-stranded DNA molecules, with quantum dots in a same color attached to the plurality of second staple DNA molecules;
a third staple DNA molecule connected to adjacent first long single-stranded DNA molecules; and
a fourth staple DNA molecule connected to the plurality of first long single-stranded DNA molecules and located at an edge of the plurality of DNA tile structures,
wherein each of the plurality of DNA tile structures is attached with quantum dots in a same color as one quantum dot unit,
each of the plurality of second staple DNA molecules is a short single-stranded DNA molecule having a length of 18 to 22 bases, which is an internal staple connected to a quantum dot; the third staple DNA molecule is a short single-stranded DNA molecule having a length of 18 to 22 bases, which is a bridge staple for assembling the plurality of first long single-stranded DNA molecules together; the fourth staple DNA molecule is an edge staple modified with nucleotide extension and truncation to form donor and acceptor DNA molecules.