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

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

doi:10.3390/mi13040595

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

Micromachines (Basel). 2022 Apr 10;13(4):595. doi: 10.3390/mi13040595.

Authors

Bingxin Zhao^{1

2}, Qingqian Wang², Depeng Li², Hongcheng Yang², Xue Bai², Shang Li², Pai Liu², Xiaowei Sun²

Affiliations

¹ The Theory Tech. Co., Ltd., Bao'an, Shenzhen 518126, China.
² Shenzhen Key Lab for Advanced Quantum Dot Display and Lighting, Department of Electrical & Electronic Engineering, Southern University of Science and Technology, Shenzhen 518005, China.

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

Abstract

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