Transfer printing method of quantum dot solid-state film and quantum dot transfer printing system

Abstract

The invention discloses a transfer printing method of a quantum dot solid-state film and a quantum dot transfer printing system. The transfer printing method comprises the steps of preparing the quantum dot solid-state film, performing ligand exchange on the quantum dot solid-state film to obtain a quantum dot solid-state film with electricity; and allowing a transfer printing tool with electricity to be in contact with the quantum dot solid-state film with electricity, and absorbing quantum dots in the quantum dot solid-state film by an attraction force between positive charge and negative charge so that the quantum dots are transferred onto a transfer printing substrate, wherein the electricity of the transfer printing tool is opposite to the electricity of the quantum dot solid-state film. The method is simple to operate and easy to repeat, the strength of a coulomb force between the transfer printing tool and the quantum dots can be effectively controlled by an electrostatic induction technology in the transfer printing engineering, a tear phenomenon caused by a Van der Waals force generated between a transfer printing surface and the quantum dot solid-state film during separation of the quantum dot solid-state film and the transfer printing tool is effectively avoided, and the completeness of the quantum dot solid-state film is ensured.

Description

technical field [0001] The invention relates to the technical field of quantum dot printing, in particular to a transfer printing method of a quantum dot solid film and a quantum dot transfer printing system. Background technique [0002] Among the new display technologies in the future, quantum dot printing display is more likely to realize industrialization, enter and improve people's lives. However, with the development and advancement of quantum dot printing technology, many printing processes have emerged, such as nano transfer printing, nano imprinting, inkjet printing and other technologies. As far as the transfer printing technology is concerned, the current scientific research work has also done related research. In the transfer printing technology, a relatively difficult problem to avoid is that the tearing of the quantum dots will be caused during the transfer printing process, which will cause the quantum dots to be transferred. The unevenness of the dot film al...

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a transfer printing method of a quantum dot solid film and a quantum dot transfer printing system, aiming at solving the problem of the gap between the transfer surface and the quantum dot solid film in the existing transfer printing method. The van der Waals force and the problem of tearing phenomenon