Optical cross-talk reduction in a quantum-dot-based full-color micro-light-emitting-diode display by a lithographic-fabricated photoresist mold

Huang Yu Lin, Chin Wei Sher, Dan Hua Hsieh, Xin Yin Chen, Huang-Ming Chen, Teng-Ming Chen, Kei May Lau, Chyong-Hua Chen, Chien-Chung Lin, Hao-Chung Kuo*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

76 Scopus citations

Abstract

In this study, a full-color emission red-green-blue (RGB) quantum-dot (QD)-based micro-light-emitting-diode (micro-LED) array with the reduced optical cross-talk effect by a photoresist mold has been demonstrated. The UV micro-LED array is used as an efficient excitation source for the QDs. The aerosol jet technique provides a narrow linewidth on the micrometer scale for a precise jet ofQDson the micro-LEDs. To reduce the optical cross-talk effect, a simple lithography method and photoresist are used to fabricate the mold, which consists of a window for QD jetting and a blocking wall for cross-talk reduction. The cross-talk effect of the well-confined QDs in the window is confirmed by a fluorescence microscope, which shows clear separation between QD pixels. A distributed Bragg reflector is covered on the micro-LED array and the QDs’ jetted mold to further increase the reuse of UV light. The enhanced light emission of the QDs is 5%, 32%, and 23% for blue, green, and red QDs, respectively.

Original languageEnglish
Pages (from-to)411-416
Number of pages6
JournalPhotonics Research
Volume5
Issue number5
DOIs
StatePublished - 1 Oct 2017

Keywords

  • (120.2040) displays
  • (160.4236) nanomaterials
  • (230.2090) electro-optical devices
  • (230.3670) light-emitting diodes
  • BACKLIGHT DRIVING SYSTEM
  • LED BACKLIGHT
  • COMMUNICATION-SYSTEM
  • MODULATION SPEED
  • LCD PANELS
  • DESIGN
  • TECHNOLOGY
  • EMISSION
  • Drivers of customer value creation

Fingerprint Dive into the research topics of 'Optical cross-talk reduction in a quantum-dot-based full-color micro-light-emitting-diode display by a lithographic-fabricated photoresist mold'. Together they form a unique fingerprint.

Cite this