1. Color Converting Film With Quantum-Dots for the Liquid Crystal Displays Based on Inkjet Printing
- Author
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Sheng Xu, Tailiang Guo, Zhixian Lin, Enguo Chen, Yun Ye, and Bing-Le Huang
- Subjects
lcsh:Applied optics. Photonics ,Materials science ,Quantum yield ,02 engineering and technology ,Backlight ,01 natural sciences ,Wide gamut ,law.invention ,color converting film ,010309 optics ,Gamut ,law ,0103 physical sciences ,lcsh:QC350-467 ,Electrical and Electronic Engineering ,inkjet printing ,Liquid-crystal display ,business.industry ,color crosstalk ,lcsh:TA1501-1820 ,021001 nanoscience & nanotechnology ,Subpixel rendering ,Atomic and Molecular Physics, and Optics ,NTSC ,Surface-area-to-volume ratio ,Quantum dot ,Optoelectronics ,0210 nano-technology ,business ,lcsh:Optics. Light - Abstract
The color converting film (CCF) is first fabricated by the inkjet printing technology with the drop-on-demand advantage in the paper, the volume ratio of the red quantum-dots (QDs) over green QDs is 1:12.9 at balanced intensity, and each subpixel of the CCF is sprayed with five droplets with each volume of 48 pL. The CCF has been equipped in the corresponding liquid crystal display (LCD) module. In theory, the optical efficiency of the CCF mainly depends on the quantum yield of QDs, therefore, and the total optical efficiency can improve by 2.4 times. The LCD module sample has been tested to verify the performance. Experimental results show that the color gamut reaches 131.4% NTSC in CIE 1931, the total optical efficiency is 20%. Comparing with the wide color gamut backlight module with QDEF, the color gamut improves by 16.4% NTSC, the total optical efficiency improves by 2.1 times, and the average color crosstalk ratio decreases by 4.21% under the condition that the misaligned size is larger than the width of the black matrix. Our method provides theoretical guidance to realize high-performance LCDs.
- Published
- 2019
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