Performance analysis of multi-primary color display based on OLEDs/PLEDs

Xiong, Yan; Deng, Fei; Xu, Shan; Gao, Shanxing

doi:10.1016/j.optcom.2017.04.039

Cited by 10 publications

(4 citation statements)

References 22 publications

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“…For a promising LED technology, a set of red (R), green (G), and blue (B) emitters with enhanced and remarkable high luminous efficiency, stability, and environmental sustainability is a must, as the RGB sub-pixel technology is commonly used in colour reproduction [ 17 , 18 ]. An immense amount of research is being undertaken on the evolution of primary colour emitters composed of red, green, and blue (RGB) [ 18 , 19 ], with red and green fluorescent emitters still requiring enhancement in electroluminescent properties, especially to meet the requirements of next-generation display applications [ 20 , 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

Polyvinyl Butyral Polymeric Host Material-Based Fluorescent Thin Films to Achieve Highly Efficient Red and Green Colour Conversion for Advanced Next-Generation Displays

et al. 2023

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Rare-earth element-free fluorescent materials are eco-friendlier than other traditional fluorescent precursors, such as quantum dots and phosphors. In this study, we explore a simple and facile solution-based technique to prepare fluorescent films, which are highly stable under ordinary room conditions and show hydrophobic behaviour. The proposed hybrid material was designed with hybrid composites that use polyvinyl butyral (PVB) as a host doped with organic dyes. The red and green fluorescent films exhibited quantum yields of 89% and 80%, respectively, and both are very uniform in thickness and water resistant. Additionally, PVB was further compared with another polymeric host, such as polyvinylpyrrolidone (PVP), to evaluate their binding ability and encapsulation behaviour. Next, the effect of PVB on the optical and chemical properties of the fluorescent materials was studied using UV spectroscopy and Fourier transform infrared spectroscopy. The analysis revealed that no new bond was formed between the host material and fluorescent precursor during the process, with intermolecular forces being present between different molecules. Moreover, the thickness of the fluorescent film and quantum yield relation were evaluated. Finally, the hydrophobic nature, strong binding ability, and optical enhancement by PVB provide a powerful tool for fabricating a highly efficient fluorescent film with enhanced stability in an external environment based on its promising encapsulation properties. These efficient fluorescent films have a bright potential in colour conversion for next-generation display applications.

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Section: Introductionmentioning

confidence: 99%

Polyvinyl Butyral Polymeric Host Material-Based Fluorescent Thin Films to Achieve Highly Efficient Red and Green Colour Conversion for Advanced Next-Generation Displays

et al. 2023

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“…Today, with the rapid development of wide-color-gamut display technology, a series of color display standards with wide color gamut have been put forward, such as Adobe-RGB, DCI-P3, and Rec.2020. Meanwhile, many kinds of multi-primary display systems with wide color gamut have been demonstrated [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 ]. Figure 1 a shows the wide-color-gamut blocks displayed on a six-primary LED array display developed by our laboratory.…”

Section: Introductionmentioning

confidence: 99%

Color Conversion of Wide-Color-Gamut Cameras Using Optimal Training Groups

Liao

et al. 2023

Sensors

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The colorimetric conversion of wide-color-gamut cameras plays an important role in the field of wide-color-gamut displays. However, it is rather difficult for us to establish the conversion models with desired approximation accuracy in the case of wide color gamut. In this paper, we propose using an optimal method to establish the color conversion models that change the RGB space of cameras to the XYZ space of a CIEXYZ system. The method makes use of the Pearson correlation coefficient to evaluate the linear correlation between the RGB values and the XYZ values in a training group so that a training group with optimal linear correlation can be obtained. By using the training group with optimal linear correlation, the color conversion models can be established, and the desired color conversion accuracy can be obtained in the whole color space. In the experiments, the wide-color-gamut sample groups were designed and then divided into different groups according to their hue angles and chromas in the CIE1976L*a*b* space, with the Pearson correlation coefficient being used to evaluate the linearity between RGB and XYZ space. Particularly, two kinds of color conversion models employing polynomial formulas with different terms and a BP artificial neural network (BP-ANN) were trained and tested with the same sample groups. The experimental results show that the color conversion errors (CIE1976L*a*b* color difference) of the polynomial transforms with the training groups divided by hue angles can be decreased efficiently.

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“…Although high saturated primaries red, green, and blue are present on QD displays, which guarantees a wide color gamut, but there is still an area lacking that needs covering when considering the extended range of goniochromatic colors on CIE1931 xy ‐diagrams. A well‐known solution is to use multichannel systems, which seems essential for achieving an enlarged color gamut with better efficiency than conventional tri‐RGB displays . Taragawa et al; state that yellow and cyan regions are more demanded than other regions like magenta .…”

Section: Introductionmentioning

confidence: 99%

“…A well-known solution is to use multichannel systems, which seems essential for achieving an enlarged color gamut with better efficiency than conventional tri-RGB displays. 13,14 Taragawa et al; state that yellow and cyan regions are more demanded than other regions like magenta. 13 So the most efficient improvements to display color reproducibility can be achieved by extending yellow and cyan regions.…”

Section: Introductionmentioning

confidence: 99%

A multi‐primary empirical model based on a quantum dots display technology

Huraibat

Perales

Viqueira

et al. 2020

Color Research & Application

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In this work, we built a multi‐primary display model based on the new quantum dots (QD) technology to enlarge the display color gamut. In this way, first the emission spectral radiance curves of the three RGB channels of a commercial QD display were fitted to a four‐parameter function. From this modeling, it is possible to gain new theoretical color primaries by selecting new spectral peaks (cyan, yellow, magenta, and/or additional RGB primaries) and imposing some colorimetric conditions for the resulting white of this proposed theoretical multi‐primary display. Proper characterization to assess the performance of the display was conducted to know if the basic “gain‐offset‐gamma” (GOG) model can be used for direct and inverse color reproduction (from RGB to CIE‐XYZ, and vice versa). The GOG model was found to well characterize this display. The spatial uniformity of the display was also evaluated in luminance and color chromaticity terms. Finally, with the primaries modeling and color characterization based on the GOG model, a 5‐primary model (RGBYC) was tested. The evaluation of this theoretical RGBYC display model confirms the gamut enlargement, which can also improve goniochromatic color reproduction.

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Performance analysis of multi-primary color display based on OLEDs/PLEDs

Cited by 10 publications

References 22 publications

Polyvinyl Butyral Polymeric Host Material-Based Fluorescent Thin Films to Achieve Highly Efficient Red and Green Colour Conversion for Advanced Next-Generation Displays

Polyvinyl Butyral Polymeric Host Material-Based Fluorescent Thin Films to Achieve Highly Efficient Red and Green Colour Conversion for Advanced Next-Generation Displays

Color Conversion of Wide-Color-Gamut Cameras Using Optimal Training Groups

A multi‐primary empirical model based on a quantum dots display technology

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