公开(公告)号：US20170174921A1

公开(公告)日：2017-06-22

申请号：US15118234

申请日：2015-12-29

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiaolong HE ,  Qi YAO ,  Seongyeol YOO ,  Shi SHU ,  Zhanfeng CAO ,  Wei XU

IPC: C09D11/50 ,  C09D11/38 ,  C09D11/36 ,  C09K11/70 ,  C09K11/02 ,  C09K11/88 ,  C09K11/87 ,  C09K11/74 ,  C09D11/52 ,  H01L51/00

CPC classification number: H01B1/20 ,  C09D11/322 ,  C09D11/36 ,  C09D11/38 ,  C09D11/50 ,  C09D11/52 ,  C09K11/025 ,  C09K11/70 ,  C09K11/7492 ,  C09K11/876 ,  C09K11/883 ,  H01L51/0005 ,  H01L51/0052 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0067 ,  H01L51/0069 ,  H01L51/007 ,  H01L51/0072 ,  H01L51/502 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/56 ,  H01L2051/0063

Abstract: A quantum dot ink, a manufacturing method thereof and a quantum dot light emitting diode device are provided. The quantum dot ink includes a non-polar organic solvent, a surface tension modifier and a hydrophobic quantum dot, the quantum dot ink further includes a carrier transport material, wherein phase separation is present between the hydrophobic quantum dot and the carrier transport material. After completing ink-jet printing the quantum dot ink, phase separation occurs between the hydrophobic quantum dot and the carrier transport material. Thus, the two-layer structure of a hydrophobic quantum dot layer and a carrier transport material layer is formed through one process. Not only a quantum dot light emitting device is manufactured by the method of ink-jet printing, but also the operation is simplified, and the manufacturing cost of the quantum dot light emitting device is reduced.