Investigating the effect of gravity on the optical performance of large-sized liquid crystal displays |
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| Affiliation: | 1. Special Display and Imaging Technology Innovation Center of Anhui Province, National Engineering Laboratory of Special Display Technology, Hefei University of Technology, Hefei, Anhui 230009, China;2. Academy of Opto-electric Technology, Hefei University of Technology, Hefei, Anhui 230009, China;3. School of Instrument Science and Opto-electronics Engineering, Hefei University of Technology, Hefei, Anhui 230009, China;1. Department of Biochemistry and Biophysics, School of Basic Medical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China;2. School of Basic Medical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China;3. School of Basic Medical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China;4. School of Basic Medical Sciences, Peking University, 38 Xueyuan Road, Beijing 100191, China;5. Division of Cervical Spine, Department of Orthopaedic, Third Hospital of Peking University, 49 Huayuanbei Road, Beijing 100191, China;6. Division of Cervical Spine, Department of Orthopaedic, Third Hospital of Peking University, 49 Huayuanbei Road, Beijing 100191, China;7. Division of Cervical Spine, Department of Orthopaedic, Third Hospital of Peking University, 49 Huayuanbei Road, Beijing 100191, China;8. Neuroscience Research Institute and Key Laboratory for Neuroscience, Ministry of Education/National Health Commission of China, Peking University, 38 Xueyuan Road, Beijing 100191, China;1. Air Force Institute of Technology, 2950 Hobson Way (AFIT/ENV), Wright Patterson AFB, OH 45433, USA |
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| Abstract: | This paper proposes a method to investigate the effect of gravity on optical performance of large-sized liquid crystal displays (LCDs). Combined with the finite element analysis and the LCD optical simulation, the change in optical performance of large-sized LCDs under the influence of gravity is analyzed. Compared with the condition without tilt angle, the Δu'v' is 0.025 in the bottom area of the 100-in LCD with the substrate thickness of 0.3 mm at a tilt angle of 1.5°, leading to a noticeable color shift. With the decrease of tilt angle or the increase of substrate thickness, the change in optical performance becomes unnoticeable and thus avoids the occurrence of visible display defect. Utilizing the proposed method, the assembly precision of large-sized LC panels can be calculated and the display defect caused by gravity can be effectively prevented. |
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| Keywords: | Gravity Large-sized LCD Transmittance Chromaticity coordinate |
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