Influence of pixel electrode coupling capacitance on the display quality in TFT-LCD

2019 ◽  
Vol 34 (5) ◽  
pp. 459-464
Author(s):  
赵重阳 ZHAO Chong-yang ◽  
苏秋杰 SU Qiu-jie ◽  
缪应蒙 MIAO Ying-meng ◽  
高玉杰 GAO Yu-jie ◽  
王永垚 WANG Yong-yao ◽  
...  
2015 ◽  
Vol 135 (7) ◽  
pp. 744-751
Author(s):  
Tetsuya Kobayashi ◽  
Nanako Niioka ◽  
Masa-aki Fukase ◽  
Atsushi Kurokawa

Author(s):  
Ying Yuan ◽  
Xiaorui Wang ◽  
Yang Yang ◽  
Hang Yuan ◽  
Chao Zhang ◽  
...  

Abstract The full-chain system performance characterization is very important for the optimization design of an integral imaging three-dimensional (3D) display system. In this paper, the acquisition and display processes of 3D scene will be treated as a complete light field information transmission process. The full-chain performance characterization model of an integral imaging 3D display system is established, which uses the 3D voxel, the image depth, and the field of view of the reconstructed images as the 3D display quality evaluation indicators. Unlike most of the previous research results using the ideal integral imaging model, the proposed full-chain performance characterization model considering the diffraction effect and optical aberration of the microlens array, the sampling effect of the detector, 3D image data scaling, and the human visual system, can accurately describe the actual 3D light field transmission and convergence characteristics. The relationships between key parameters of an integral imaging 3D display system and the 3D display quality evaluation indicators are analyzed and discussed by the simulation experiment. The results will be helpful for the optimization design of a high-quality integral imaging 3D display system.


2021 ◽  
Vol 52 (1) ◽  
pp. 650-653
Author(s):  
Tatsuya Iwasaki ◽  
Yuki Nakamura ◽  
Toshikazu Sumi ◽  
Katsufumi Ohmuro ◽  
Masaaki Suzuki ◽  
...  

2021 ◽  
Vol 8 (3) ◽  
pp. 1026-1044
Author(s):  
Martha Nandari Santoso

This study was conducted out of the researcher’s teaching reflection while teaching English as a foreign language (EFL) online class during the pandemic of COVID-19, a time when face-to-face courses had to be converted to online classes. Her choice of educational tool for her EFL e-learning environment utilized a Facebook closed group. Her experiences in utilizing a Facebook closed group for her EFL e-learning environment and the students’ views were the main topics of this study. Eighteen EFL freshmen participants were selected in this study. The researcher used data from a questionnaire with some closed and open-ended questions. The findings indicated that the students found the Facebook closed group a comfortable, practical, and useful e-learning environment. The students’ familiarity with the interface helped them to immediately focus on the class activities instead of learning how to use the tool. Most students viewed the Facebook closed group as positive for class interactions, creative work, opinions, and express feelings. A few dislike voices were related to the display quality of Facebook, the asynchronous and silent communication on Facebook. Accordingly, utilizing a Facebook closed group might be worth considering for learners who have not been adequately prepared with the technology for joining an online class. 


2017 ◽  
Vol 31 (02) ◽  
pp. 1650261 ◽  
Author(s):  
Andrey Velichko ◽  
Maksim Belyaev ◽  
Vadim Putrolaynen ◽  
Alexander Pergament ◽  
Valentin Perminov

In the present paper, we report on the switching dynamics of both single and coupled VO2-based oscillators, with resistive and capacitive coupling, and explore the capability of their application in oscillatory neural networks. Based on these results, we further select an adequate SPICE model to describe the modes of operation of coupled oscillator circuits. Physical mechanisms influencing the time of forward and reverse electrical switching, that determine the applicability limits of the proposed model, are identified. For the resistive coupling, it is shown that synchronization takes place at a certain value of the coupling resistance, though it is unstable and a synchronization failure occurs periodically. For the capacitive coupling, two synchronization modes, with weak and strong coupling, are found. The transition between these modes is accompanied by chaotic oscillations. A decrease in the width of the spectrum harmonics in the weak-coupling mode, and its increase in the strong-coupling one, is detected. The dependences of frequencies and phase differences of the coupled oscillatory circuits on the coupling capacitance are found. Examples of operation of coupled VO2 oscillators as a central pattern generator are demonstrated.


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