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Wide color gamut switchable autostereoscopic 3D display based on directional quantum-dot backlight

Chinese Physics B 2019年第12期28卷 191-201页

作者： Bin Xu Xue-Ling Li Yuan-Qing Wang School of Electronic Science and Engineering Nanjing UniversityNanjing 210023China

A switchable autostereoscopic 3-dimensional(3D) display device with wide color gamut is introduced in this paper. In conjunction with a novel directional quantum-dot(QD) backlight, the precise scanning control strategy, and the eye-tracking system, this spatial-sequential solution enables our autostereoscopic display to combine all the advantages of full resolution,wide color gamut, low crosstalk, and switchable 2D/3D. And also, we fabricated an autostereoscopic display prototype and demonstrated its performances effectively. The results indicate that our system can both break the limitation of viewing position and provide high-quality 3D images. We present two working modes in this system. In the spatial-sequential mode,the crosstalk is about 6%. In the time-multiplexed mode, the viewer should wear auxiliary and the crosstalk is about 1%,just next to that of a commercial 3D display(BENQ XL2707-B and View Sonic VX2268 WM). Additionally, our system is also completely compatible with active shutter glasses and its 3D resolution is same as its 2D resolution. Because of the excellent properties of the QD material, the color gamut can be widely extended to 77.98% according to the ITU-R recommendation BT.2020(Rec.2020).

关键词： three-dimensional(3D) display directional and scanning quantum-dot backlight color gamut full resolution

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Going beyond the limit of an LCD’s color gamut

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Light(Science & Applications) 2017年第1期6卷 567-576页

作者： Hai-Wei Chen Rui-Dong Zhu Juan He Wei Duan Wei Hu Yan-Qing Lu Ming-Chun Li Seok-Lyul Lee Ya-Jie Dong Shin-Tson Wu College of Optics and Photonics University of Central FloridaOrlandoFL 32816USA National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced Microstructures and College of Engineering and Applied SciencesNanjing UniversityNanjing 210093China AU Optronics Corp NanoScience Technology Center University of Central FloridaOrlandoFL 32826USA

In this study,we analyze how a backlight’s peak wavelength,full-width at half-maximum(FWHM),and color filters affect the color gamut of a liquid crystal display(LCD)device and establish a theoretical limit,even if the FWHM approaches 1 *** overcome this limit,we propose a new backlight system incorporating a functional reflective polarizer and a patterned half-wave plate to decouple the polarization states of the blue light and the green/red *** a result,the crosstalk between three primary colors is greatly suppressed,and the color gamut is significantly *** the experiment,we prepare a white-light source using a blue light-emitting diode(LED)to pump green perovskite polymer film and red quantum dots and demonstrate an exceedingly large color gamut(95.8%Rec.2020 in Commission internationale de l'éclairage(CIE)1931 color space and 97.3%Rec.2020 in CIE 1976 color space)with commercial high-efficiency color *** results are beyond the color gamut limit achievable by a conventional *** design works equally well for other light sources,such as a 2-phosphorconverted white LED.

关键词： color gamut liquid crystal displays perovskite polarization quantum dot

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The Effect of Quantization Error on Display color gamut Transformation

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光学学报 2003年第S1期23卷 801-802页

作者： Yu Chen, Tiefu Ding Changchun Institute of Optics fine Mechanics and Physics, CAS, P. R. China, 130022,Te1: 86-431-4627053 Changchun Institute of Optics fine Mechanics and Physics CAS P. R. China 130022

Researchers and designers who work with color displays often transform color gamut between two different display devices. This paper demonstrates the effect of quantization error on the transformation based on analyzi... 详细信息

关键词： Effect Quantization error color gamut

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Local dimming algorithm and color gamut calibration for RGB LED backlight LCD display

Local dimming algorithm and color gamut calibration for RGB ...

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2010年第二届中国科学院博士后学术年会暨高新技术前沿与发展学术会议

作者：黄伟中国科学院苏州纳米技术与纳米仿生研究所

A 32 inch RGB LED backlight unit is *** local dimming algorithm is designed for the backlight,and grid-noise artifacts in LC driving signal are successfully removed with consideration of the backlight distribution for the identical intensity of LED *** 32 inch RGB LED backlight LCD display shows that a static display contrast of over 20000:1,and an average of 30%of the power reduction can be *** have also obtained the color gamut transformation matrix for transferring the CCFL BLU LCD display gamut system to our RGB LED BLU LCD display gamut system,and expanded former CCFL backlight display gamut system by suppositional color expansion *** a result,the color gamut of the display can reach as high as 116%NTSC.

关键词： LED backlight Local dimming color gamut

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color control of the multi-color printing device

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第7期7卷 1187-1192页

作者： WANG Xiao-hua XIU Xiao-jie ZHU Wen-hua TANG Hong-jun School of Computer Hangzhou Dianzi University Hangzhou 310018 China

Conventional color-printing systems often use inks of three hues, such as CMY, CMYK and CMYKLcLm, but in order to obtain more realistic color reproductions, the ink set of more than three hues has been adopted by some color-printing systems. It is difficult, however, to model the composed color with the multiple inks when the number of the output ink hues exceeds three due to the none-unique mapping between the color spaces of the CIE Lab and the multi-color printing device. In this paper, we propose a fine color-printing method for multi-color printing device with the ink set of more than three hues. The proposed approach has good color expression ability and provides fine control of the printed color. By dividing the output color space into several subspaces, our method allows one-to-one mapping between the standard color space and the multi-color output color space. It has been proved effective when applied to the digital inkjet printer—Mutoh8000.

关键词： Multi-color printing device color gamut color space Digital inkjet printer

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Investigation of Quantum Dot color Filter Micro-LED Display

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Photonic Sensors 2024年第1期14卷 40-47页

作者： Xuhui PENG Yang ZENG Sitao HUO Zhenyuan YANG Xiaoping HUANG Qing ZHAO School of Resources and Environment University of Electronic Science and Technology of ChinaChengdu 611731China Yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhou 313001China Shanghai Tianma Microelectronics Shanghai 201201China

In this work,we present the investigation of the quantum dot color filter(QDCF)micro-light emitting diode(micro-LED)*** and red quantum dot photoresist(QDPR)materials are patterned into a pixelated array and precisely bonded with an all-blue micro-light emitting diode(micro-LED)substrate,forming a red,green,and blue(RGB)full color display through color conversion.A few factors that influence the achievable color gamut are further *** resulting 1.1-inch 228-pixels per inch(ppi)display demo shows the good *** findings in this paper pave a way to the future industrialization of the micro-LED display.

关键词： Quantum dot color filter(QDCF) color conversion micro-light emitting diode(micro-LED) color gamut

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