最新刊期
期 2 ， 2018
- 摘要：
In order to realize the simulation of optical rotatory of blue phase liquid crystal, the one-dimensional model is established, and the optical rotatory of blue phase liquid crystal between crossed linear or circle polarizers is simulated, and the reflection is investigated. The theoretical and simulated results of optical rotatory of cholesteric liquid crystal are compared. Compared with the structures of cholesteric and blue phase liquid crystal, the cholesteric liquid crystal with high tilt angle is found 关键词：blue phase liquid crystal;optical rotatory;Bragg reflection;circle polarizer- 351
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发布时间：2020-07-06 - 摘要：
In order to realize the controllability of orthogonal change of polarization direction of the polarized light in the whole visible wavelength range, we research the achromatic polarized light switch composed of liquid crystal wave-plates. The polarization rotation and response characteristics of a liquid crystal wave-plate are analyzed synthetically, and compared with the polarizing effect of the traditional wave-plate. Then, the achromatic polarized light switch is designed by referring to the design of th 关键词：polarization switch;achromatic;liquid crystal wave plate;response time- 315
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- 3
发布时间：2020-07-06 - 摘要：
This paper studies the effect of anisotropic materials on transmission characteristics for photonic crystal fiber. The influence of the air holes near the core on the photonic crystal fiber are most, so the air holes near the fiber core are respectively proceeding two holes, three holes and six holes filling. The dispersion, confinement loss and effective mode field area of photonic crystal fibers filled with anisotropic materials were simulated, and its transmission characteristics were analyzed and discus 关键词：photonic crystal fiber;anisotropy;liquid crystal;transmission characteristics- 329
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发布时间：2020-07-06 - 摘要：To reduce the occurrence of TFT-LCD image-retention, several key factors were approved with fractional factorial design adopting the design of experiment (DOE). Through the practical production, we solved the problem about the image-retention. The results showed that the prominent factors of image-retention, including OC, OL and Rubbing Torque, can be effectively distinguished by DOE method. Moreover, by adding OC on CF, enlarging and ITO-Vcom Overlay, or increasing Rubbing Torque value, the incidence of image-retention during improvement can be effectively reduced. This study provided a new idea for other defect researches in image-retention and TFT-LCD production process.关键词：image-retention;design of experiment;over coater;overlay;rubbing torque
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发布时间：2020-07-06 - 摘要：
Particle Gap was a common defect in TFT-LCD process. Taking 55 UHD product as an example, the incidence of Particle Gap was about 1.0%, which had great impact on the product yield. To enhance the quality of LCD screen and customer satisfaction, this problem needed to be resolved. In this paper, we analyzed the main types of Particle Gap by the bad phenomena and achieved the effect of reducing the Particle Gap finally by improving the CF grinding failure particle, sandy particle and transparent particle. Fir 关键词：TFT-LCD;Particle gap;CF grinding failure particle;transparent particle;sandy particle- 357
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发布时间：2020-07-06 - 摘要：Stainin room temperature (Array Mura) can be found in production. Aiming at the requirements of high precise and low resistance circuit, a new type of wet etching etchant is necessary for the manufacturing in aluminum technology. By comparing three kinds of etchant, we made a conclusion that the shrinkage of Top Mo has played a significant role in the producing of Array Mura. The concentration of nitric acid and other additive can control the process of electrochemical reaction which can drive an obvious improvement in Array Mura by controlling the shrinkage of Top Mo within 0.1 μm. The wet etching etchant C have already fitted all the etching parameters including CD bias and profile, and it also be imported into quantity production.关键词：room temperature stain;Mo shrink;etchant
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发布时间：2020-07-06 - 摘要：We report on the numerical analysis of liquid crystal polarization gratings (LCPGs), especially those were fabricated by two incident lights with orthogonal circular polarization and different intensities, and study their general diffraction properties by Jones calculus. First, we represent the electric fields of the incident waves respectively, and figured out the interference pattern and polarization properties. Second, the response matrix of the refractive index change by irradiating the polarized light was inferred and associated with the interference pattern by using the Stokes parameters. Finally, we obtained the 2×2 Jones matrix and the theoretical properties about the LCPGs based on the response matrix. The results indicate that the LCPGs fabricated by two incident lights with different intensities also can show high diffraction efficiency, about 100%, in zero order and ±1 order.关键词：liquid crystal;grating;Jones calculus;photoalignment
- 329
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- 35
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- 3
发布时间：2020-07-06
Material and Device
- 摘要：Aiming at the error detection of the chessboard corners caused by distortion and blur of microscopic imaging during the calibration processing of the micro stereovision, a corner detection method of chessboard based on rotation invariance is proposed, which studies the geometry of chessboard corners and sorts all the characteristic corners. Mathematical model is established through experiments, the confidence level of filtered characteristic corners are calculated, which extracts positions of the chessboard corners and validate the accuracy, the number of noise and the precision through a series of experiments. The results show that the accuracy rate of the corner detection based on rotation invariance reaches 91.2%, and the mean square error of the re-projection error is approximately 0.1 pixels, which has a comparatively high accuracy and high precision.关键词：rotation invariance;corner detection;geometric characteristics;confidence level
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发布时间：2020-07-06 - 摘要：
As for the problem that image synthesis result is subject to color and weight selection, the paper proposes an image synthesis algorithm based on sampling cutout and adaptive color weight by combining the advantages of gradient domain and linear alpha synthesis algorithm. This algorithm increases data item constraints and neighborhood restrictions to realize the local iteration correction of alpha matte value obtained through the original cutout method. The synthesis area is divided according to the obtaine 关键词：image synthesis;sampling matting;color weight;border seamless synthesis;color fidelity- 302
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发布时间：2020-07-06 - 摘要：
In this paper, a new quantum particle swarm optimization algorithm is used to optimize the voice conversion model of generalized regression neural network in order to solve the problem of slow convergence and premature phenomenon in particle swarm optimization. The quantum particle swarm optimization algorithm changes the position vector by changing the quantum bit phase and uses the quantum non-gate to perform the mutation operation. Therefore, we first use the quantum particle swarm to optimize the networ 关键词：voice conversion;quantum particle swarm optimization;generalized regression neural network;quantum bite;smooth factor- 302
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发布时间：2020-07-06
Image Processing
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