Optical cross-talk reduction in a quantum-dot-based full-color micro-light-emitting-diode display by a lithographic-fabricated photoresist mold
| Autor: | Teng-Ming Chen, Chin-Wei Sher, Hao-Chung Kuo, Huang-Ming Philip Chen, Kei May Lau, Dan-Hua Hsieh, Chien-Chung Lin, Xin-Yin Chen, Huang-Yu Lin, Chyong-Hua Chen |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science business.industry 02 engineering and technology Photoresist 021001 nanoscience & nanotechnology Distributed Bragg reflector 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Nanomaterials Laser linewidth Optics law Quantum dot 0103 physical sciences Optoelectronics Light emission 0210 nano-technology business Lithography Light-emitting diode |
| Zdroj: | Photonics Research. 5:411 |
| ISSN: | 2327-9125 |
| DOI: | 10.1364/prj.5.000411 |
| Popis: | 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 of QDs on 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|