Monolithic full-color microdisplay using patterned quantum dot photoresist on dual-wavelength LED epilayers

Peian Li, Xu Zhang, Yangfeng Li, Longheng Qi, Chak Wah Tang, Kei May Lau*

*Corresponding author for this work

Research output: Contribution to journalJournal Articlepeer-review

Abstract

A passive-matrix monolithic full-color InGaN light emitting diode (LED) microdisplay with 40 × 40 full-color pixels is demonstrated. Each full-color pixel consists of red, green, and blue (RGB) subpixels that have a pitch size of 40 μm × 120 μm. The full-color microdisplay is monolithically fabricated on blue/green dual-wavelength LED epilayers, using red quantum dot photoresist as a color converter. Pure RGB emission and a wide color gamut are achieved, as shown by electroluminescence spectra. Full-color patterns with controllable grayscale and color mixing can be clearly rendered driven by a full-color microdisplay controller, indicating tremendous potential of this novel approach for full-color LED microdisplays in the future.

Original languageEnglish
Pages (from-to)157-165
Number of pages9
JournalJournal of the Society for Information Display
Volume29
Issue number3
DOIs
Publication statusPublished - Mar 2021

Bibliographical note

Publisher Copyright:
© 2020 Society for Information Display.

Keywords

  • LED
  • full-color
  • microdisplay
  • quantum dot

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