2D/3D switchable displays through PDLC reverse mode parallax barrier

Chidichimo, Giuseppe; Beneduci, Amerigo; Maltese, Vito; Cospito, Sante; Tursi, Antonio; Tassini, Paolo; Pandolfi, Giuseppe

doi:10.1080/02678292.2018.1501821

Cited by 17 publications

(5 citation statements)

References 14 publications

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“…It is assumed that, in 2D mode, the PDLC operating as an ordinary diffusion film, would turn slit light source into diffuse one; while the prototype is in 3D mode, the PDLC would turn to be transparent at voltage signals. Several experiments are carried out to justify this design's feasibilty [28]. Table. 1. provides basic information of the LCD panel used in our design.…”

Section: The Principle Of 2d/3d Switchingmentioning

confidence: 99%

Wide Color Gamut Autostereoscopic 2D–3D Switchable Display Based on Dynamic Subpixel Arrangement

Wang

2019

IEEE Access

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This paper is a report on the mathematical analysis and working principle of a wide color gamut autostereoscopic 2D-3D switchable display based on the dynamic subpixel arrangement method. The display prototype discussed in the paper has three major distinctions. First, the use of dynamic subpixel arrangement method and eye-tracking system has improved its performances in the resolution, crosstalk and 2D/3D switching statistics. Second, a design of Quantum-Dot-Polymer (QDP) film and optical layer combined backlight has enhanced its viewing angle and color gamut. Third, the application of parallel computing to the dynamic subpixel arrangement method has improved its real-time performance. Base on observation from finished fabrication and experiment, this prototype has already demonstrated noticeable enhancement in terms of color gamut expansion-reaching 77.98% according to ITU-R Recommendation BT.2020 (Rec.2020), and crosstalk reduction-with the minimum crosstalk rate at nearly 6%. Close comparison with two other commercial 3D displays (BENQ XL2707-B and View Sonic VX2268WM) are also presented in the paper for sufficiency. INDEX TERMS 3-D display, dynamic subpixel arrangement, quantum dot, color gamut. YUANQING WANG received the B.S. and M.S. degrees from Zhejiang University and the Ph.D. degree from Nanjing University. He is currently a Professor with the School of Electronic Science and Engineering, Nanjing University. He was involved in the research work on optical electrical imaging and measuring systems, and special display technologies. He has completed various research projects, such as the National Hi-tech Research and Development Plan (863 Plan) of China, the National Natural Science Foundation of China, Jiangsu Hi-tech Plan, and so on. His current research interests include optical electronics and information processing, especially in LIDAR and 3D display. He is the Chairman of the 3D Imaging and Display Committee, China, and the IEC International Standard Workgroup Experts in Display Technology.

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Section: The Principle Of 2d/3d Switchingmentioning

confidence: 99%

Wide Color Gamut Autostereoscopic 2D–3D Switchable Display Based on Dynamic Subpixel Arrangement

Wang

2019

IEEE Access

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“…1. Parallax barriers [6,7] were originally used instead of lenticular lens arrays, but due to their blocking a large proportion of the light and reducing the brightness of the display, they are now used less frequently. In MV and SMV displays, rays from sub-pixels on the screen pass through lenses to form voxels in space, as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Increasing depth of field for slanted lenticular 3D displays

Zheng,

Surman,

Sun

2024

Three-Dimensional Imaging, Visualization, and Display 2024

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In multiview (MV) or super multiview (SMV) glasses-free 3D displays, depth of field (DOF) is one of the most important parameters. The greater the distance of the displayed object outside or inside the screen, the more blurred it will be; therefore, a larger value of DOF can give more depth information and more pleasing 3D images. In this paper, we will first analyze how the voxels, which are the 3D equivalent of pixels in a conventional display, are formed in space and how it affects DOF; we will then show how to increase DOF by increasing the focal length of the lenticular lens. In our experiments, we made two 3D displays using two lenticular lenses with the same parameters, except for the focal length, and showed that the larger the focal length of lenticular lens, the larger the DOF of the 3D displays. However, for the same 2D screen, the larger DOF results in a smaller viewing angle. We then applied eye-tracking to increase the viewing angle by a factor of about three times in order to compensate for the reduced viewing angle.

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“…Polymer dispersed liquid crystal (PDLC) is a new type of liquid crystal display device, since the LC molecules can change their orientation under the influence of an applied electrical field [ 1 ], they can switch between a highly scattering opaque state and a transparent state [ 2 , 3 , 4 ]. It has a simple preparation process, low price, and no need for polarizers, and can be used for large-area flexible displays [ 5 , 6 , 7 , 8 ]. In addition to the display, PDLC is now also used in electronically controlled smart glass, liquid crystal gratings, optical switches, and other fields [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Electro-Optical Characteristics of Polymer Dispersed Liquid Crystal Doped with MgO Nanoparticles

Zhao

et al. 2022

Molecules

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In this paper, inorganic oxide MgO nanoparticles-doped polymer dispersed liquid crystal (PDLC) films were made from a mixture of the prepolymer, SLC1717 liquid crystal, and MgO nanoparticles by the polymerization induced phase separation (PIPS) process. To observe the effect of MgO concentration, PDLC was dispersed with 0.2, 0.4, 0.6, and 0.8 wt.% MgO. Electro-optical properties of the films have been investigated using LCD parameter meter and Scanning Electron Microscope (SEM) at room temperature. It is established that MgO nanoparticles affect the microstructure of PDLC films significantly because of the formed agglomerates of MgO nanoparticles. Results show an improvement in the electro-optical properties and a decrease in the driving voltage for doped systems with MgO nanoparticles. When the doping amount of MgO is 0.8 wt.%, the threshold voltage (Vth) is reduced to about 7.5 V. Therefore, MgO-doped PDLC is expected to become an excellent choice in the field of energy-saving.

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2D/3D switchable displays through PDLC reverse mode parallax barrier

Cited by 17 publications

References 14 publications

Wide Color Gamut Autostereoscopic 2D–3D Switchable Display Based on Dynamic Subpixel Arrangement

Wide Color Gamut Autostereoscopic 2D–3D Switchable Display Based on Dynamic Subpixel Arrangement

Increasing depth of field for slanted lenticular 3D displays

Electro-Optical Characteristics of Polymer Dispersed Liquid Crystal Doped with MgO Nanoparticles

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