Red and Green Quantum Dot Color Filter for Full-Color Micro-LED Arrays

Zhao, Bingxin; Wang, Qingqian; Li, Depeng; Yang, Hongcheng; Bai, Xue; Li, Shang; Liu, Pai; Sun, Xiaowei

doi:10.3390/mi13040595

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Article

10 April 2022

7 Pages

Red and Green Quantum Dot Color Filter for Full-Color Micro-LED Arrays

and

The Theory Tech. Co., Ltd., Bao’an, Shenzhen 518126, China

Shenzhen Key Lab for Advanced Quantum Dot Display and Lighting, Department of Electrical & Electronic Engineering, Southern University of Science and Technology, Shenzhen 518005, China

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Micromachines2022, 13(4), 595;https://doi.org/10.3390/mi13040595

This article belongs to the Special Issue Quantum Dot Frontiers

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Abstract

This work demonstrated color-conversion layers of red and green quantum dots color filter for full-color display arrays. Ligands exchange using (3-glycidyloxypropyl) trimethoxysilane with epoxy functional groups to treat QDs in the liquid phase was performed for photolithography use. The combination of ligands of QDs with photo-initiator played a protective role on QDs. Moreover, the pixel size of green QDCF can be reduced to 50 μm, and a high optical density (OD) of 1.2 is realized.

Keywords:

quantum dots; display; photolithography; modified QDs; micro-LED

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