Tripling Light Conversion Efficiency of μLED Displays by Light Recycling Black Matrix
Quantum-dot color conversion film (QDCCF) with a partitioned black matrix (BM) realizes effective color generation with low crosstalk for micro-light-emitting diode (μLED) displays. However, this traditional BM seriously deteriorates light conversion efficiency (LCE) of QD converted &...
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/9705121/ |
| _version_ | 1797803152785801216 |
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| author | Xiang Zhang Anlan Chen Tao Yang Junhu Cai Yuanyuan Ye Enguo Chen Sheng Xu Yun Ye Jie Sun Qun Yan Tailiang Guo |
| author_facet | Xiang Zhang Anlan Chen Tao Yang Junhu Cai Yuanyuan Ye Enguo Chen Sheng Xu Yun Ye Jie Sun Qun Yan Tailiang Guo |
| author_sort | Xiang Zhang |
| collection | DOAJ |
| description | Quantum-dot color conversion film (QDCCF) with a partitioned black matrix (BM) realizes effective color generation with low crosstalk for micro-light-emitting diode (μLED) displays. However, this traditional BM seriously deteriorates light conversion efficiency (LCE) of QD converted μLED displays due to its absorption energy loss. In this paper, a novel internal and external reflective black matrix (IERBM) is proposed to improve the LCE and blue light utilization (BLU) by light recycling and reuse. Based on the IERBM structural optimization, the LCE can be respectively improved by 3.39× and 2.74× for red and green QDCC sub-pixels, and the BLU can be effectively increased by 1.11×. Accurate white balance and high color uniformity are achieved by this μLED display. Meanwhile, both the crosstalk of 1.72% and the color gamut of 89.8% Rec. 2020 are comparable with traditional absorptive BM. It is also found that the proposed IERBM has the potential to weaken μLED's sidewall effect. This work may open up a new technological route for improving the optical performance in advanced self-emissive displays. |
| first_indexed | 2024-03-13T05:16:32Z |
| format | Article |
| id | doaj.art-cbd9835e43bc43d0b7de4aaa7a0f49f9 |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-03-13T05:16:32Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-cbd9835e43bc43d0b7de4aaa7a0f49f92023-06-15T23:00:11ZengIEEEIEEE Photonics Journal1943-06552022-01-011421710.1109/JPHOT.2022.31482419705121Tripling Light Conversion Efficiency of μLED Displays by Light Recycling Black MatrixXiang Zhang0Anlan Chen1Tao Yang2Junhu Cai3Yuanyuan Ye4Enguo Chen5https://orcid.org/0000-0001-9808-7252Sheng Xu6Yun Ye7Jie Sun8https://orcid.org/0000-0002-6479-7771Qun Yan9Tailiang Guo10National & Local United Engineer Laboratory of Flat Panel Display Technology, College of Physics and Information Engineering, Fuzhou University, Fuzhou, Fujian Province, ChinaNational & Local United Engineer Laboratory of Flat Panel Display Technology, College of Physics and Information Engineering, Fuzhou University, Fuzhou, Fujian Province, ChinaNational & Local United Engineer Laboratory of Flat Panel Display Technology, College of Physics and Information Engineering, Fuzhou University, Fuzhou, Fujian Province, ChinaNational & Local United Engineer Laboratory of Flat Panel Display Technology, College of Physics and Information Engineering, Fuzhou University, Fuzhou, Fujian Province, ChinaNational & Local United Engineer Laboratory of Flat Panel Display Technology, College of Physics and Information Engineering, Fuzhou University, Fuzhou, Fujian Province, ChinaNational & Local United Engineer Laboratory of Flat Panel Display Technology, College of Physics and Information Engineering, Fuzhou University, Fuzhou, Fujian Province, ChinaNational & Local United Engineer Laboratory of Flat Panel Display Technology, College of Physics and Information Engineering, Fuzhou University, Fuzhou, Fujian Province, ChinaNational & Local United Engineer Laboratory of Flat Panel Display Technology, College of Physics and Information Engineering, Fuzhou University, Fuzhou, Fujian Province, ChinaNational & Local United Engineer Laboratory of Flat Panel Display Technology, College of Physics and Information Engineering, Fuzhou University, Fuzhou, Fujian Province, ChinaNational & Local United Engineer Laboratory of Flat Panel Display Technology, College of Physics and Information Engineering, Fuzhou University, Fuzhou, Fujian Province, ChinaNational & Local United Engineer Laboratory of Flat Panel Display Technology, College of Physics and Information Engineering, Fuzhou University, Fuzhou, Fujian Province, ChinaQuantum-dot color conversion film (QDCCF) with a partitioned black matrix (BM) realizes effective color generation with low crosstalk for micro-light-emitting diode (μLED) displays. However, this traditional BM seriously deteriorates light conversion efficiency (LCE) of QD converted μLED displays due to its absorption energy loss. In this paper, a novel internal and external reflective black matrix (IERBM) is proposed to improve the LCE and blue light utilization (BLU) by light recycling and reuse. Based on the IERBM structural optimization, the LCE can be respectively improved by 3.39× and 2.74× for red and green QDCC sub-pixels, and the BLU can be effectively increased by 1.11×. Accurate white balance and high color uniformity are achieved by this μLED display. Meanwhile, both the crosstalk of 1.72% and the color gamut of 89.8% Rec. 2020 are comparable with traditional absorptive BM. It is also found that the proposed IERBM has the potential to weaken μLED's sidewall effect. This work may open up a new technological route for improving the optical performance in advanced self-emissive displays.https://ieeexplore.ieee.org/document/9705121/Displaysquantum dotsmicro LEDblack matrix |
| spellingShingle | Xiang Zhang Anlan Chen Tao Yang Junhu Cai Yuanyuan Ye Enguo Chen Sheng Xu Yun Ye Jie Sun Qun Yan Tailiang Guo Tripling Light Conversion Efficiency of μLED Displays by Light Recycling Black Matrix IEEE Photonics Journal Displays quantum dots micro LED black matrix |
| title | Tripling Light Conversion Efficiency of μLED Displays by Light Recycling Black Matrix |
| title_full | Tripling Light Conversion Efficiency of μLED Displays by Light Recycling Black Matrix |
| title_fullStr | Tripling Light Conversion Efficiency of μLED Displays by Light Recycling Black Matrix |
| title_full_unstemmed | Tripling Light Conversion Efficiency of μLED Displays by Light Recycling Black Matrix |
| title_short | Tripling Light Conversion Efficiency of μLED Displays by Light Recycling Black Matrix |
| title_sort | tripling light conversion efficiency of x03bc led displays by light recycling black matrix |
| topic | Displays quantum dots micro LED black matrix |
| url | https://ieeexplore.ieee.org/document/9705121/ |
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