Ink-Jet Printing and Photolithography of Quantum Dot Patterns for Micro Light-Emitting Diodes
Journal
Proceedings of the International Display Workshops
Journal Volume
29
Date Issued
2022-01-01
Author(s)
Abstract
Two types of quantum dots (QD) patterning methods applied in micro-LED color conversion process are studied in this article. QDs were patterned by ink-jet printing and by photolithography to from QD array with pitch/size of 40/20 Pm respectively, and were further excited by a blue LED for luminescent property measurement. QD ink-jet printing pattern shows red light emission peak of 626 nm and a FWHM of 38 nm. Compare to ink-jet printing method, QD photolithography pattern shows the emission peak with longer wavelength of 635 nm and a broadened FWHM of 43 nm.
Subjects
colloidal quantum dots | ink-jet printing | micro LEDs | quantum dot photoresist
Type
conference paper