最新刊期
期 6 ， 2018
- 摘要：
Novel organic field-effect transistor (OFET) devices with drain-source-gate (D-S-G) coplanar configuration are fabricated by using E7 liquid crystal as a gate insulator and PⅡ-TVT as active layer, through typical photolithography/etching processes, in order to prepare an OFET with liquid crystal as the gate insulator. The transistor performance was measured and experimental results indicated that the device showed some special untypical transistor performance with Ion/Ioff could be up to 103.From optical mi 关键词：liquid crystal;LC-gated OFET;polarization;synaptic behavior- 333
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发布时间：2020-07-06 - 摘要：
The progress of science and technology brings us into the Internet Of Things(IOT) age which is characterized by the interconnectivity of all things. With the development of artificial intelligence and the big data, we will gradually move from junior artificial intelligence to senior artificial intelligence and even super artificial intelligence in the near future. As the terminal information gate of the IOT era, the display devices will also extend to the intelligent direction, which is the intelligent disp 关键词：internet of things;intelligent display;high display quality;low power-consumption;functions integration- 490
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发布时间：2020-07-06 - 摘要：A device of dye-doped chiral-nematic liquid crystal laser is prepared, and the random laser mechanism is analyzed. A focal conic state is achieved after mixing laser dyes DCM and PM597. Chiral compound S-811 and nematic liquid crystal TEB30A are infused into 40μm cells with no rubbing treatment, respectively. A Nd:YAG pulsed solid-state laser with a wavelength of 532 nm is used as pump source. Both cells emit a discrete and sharp random laser with a line-width of 0.3 nm. The laser from the PM597 doped cell has a wavelength region of 575～588 nm, and the laser from the DCM doped cell has a wavelength region of 600～620 nm. The random laser can be detected in a fan-shaped region with an angle from 45° to 150° to the cell surface. In the device, the strong scattering of chiral conical texture of liquid crystal in chiral nematic liquid crystal is the main reason of random lasing.关键词：chiral nematic liquid crystal;random laser;focal conic state
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发布时间：2020-07-06 - 摘要：Rubbing Mura is a common defect in the production of TFT_LCD with contact rubbing process, especially in the high advanced super dimension switch (HADS) production. This paper analyzes the causes and mechanism of the Rubbing Mura, and finds that it is caused by the leakage of light from the weak zone of rubbing near the Source Data (SD). Further analysis has been done by comparing the rubbing strength (Nip value), rubbing cloth model, rubbing cloth life, black matrix (BM) widening and SD thinning. The ratio of rubbing Mura has been reduced from 2.4% to 0% under the most optimal process condition, and the effect of the improvements is quite obvious.关键词：rubbing Mura;super dimension switch production;weak zone of rubbing;process conditions
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发布时间：2020-07-06 - 摘要：
Aiming at the characteristics of mobile screen image, such as non-uniform luminance and low contrast of Mura defect, an automatic on-line detection method for Mura defect based on adaptive local enhancement is proposed in this paper. First, for the original mobile screen image captured by CCD camera, preprocessing steps including region of interest extraction, geometric correction and filtering are applied to extract the screen region from the original image. Then, the screen region is divided into multiple 关键词：TFT-LCD screen;Mura;image enhancement;defect detection- 342
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发布时间：2020-07-06 -
Theoretical study of the surface anchoring effect on the full leaky waveguide mode of liquid crystal
摘要：Surface anchoring energy of the substrates can affect the distribution of liquid crystal director in parallel-aligned nematic liquid crystal cell, and the structure of liquid crystal guide mode will be changed in the optics. To investigate the influence of the anchoring energy on the liquid crystal fully leaky guided mode, the equilibrium equation of the liquid crystal director was deduced under the external applied voltage based on the elastic theory of liquid crystal, and then the liquid crystal director 关键词：anchoring;fully leaky guided mode;planer aligned nematic;elastic theory of liquid crystal;multilayer optics theory- 311
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发布时间：2020-07-06
Material and Device
- 摘要：In order to enhance the detection rate of ensemble classifier, an algorithm based on feature ranking is proposed. First, the original feature is sorted according mutual information score. Then the sorted feature is divided into important feature part and common feature part according to the divide point. The feature subset is formed by selecting features randomly in each part according to the given sampling rate. Experimental results show that, our method detects two format images after embedding nsF5 and S-UNIWARD, the false detection is lower than classical ensemble classifier 0.0065 to.jpeg images, and the false detection is lower than 0.0062 to.bmp images. Compared with typical ensemble classifier, the proposed method is more effective than the different stego algorithms in frequency domain and spatial domain.关键词：steganalysis;ensemble classifier;feature ranking;mutual information scores
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发布时间：2020-07-06 - 摘要：
With the development of real-time video surveillance, moving target detection algorithm has been used in many fields. The current moving object detection algorithm is most vulnerable to environmental noise and light mutation. In order to improve the stability and self-adaptability of the algorithm, an improved moving average target detection algorithm based on statistical information is proposed. Firstly, on the basis of the characteristics of inter-frame difference that is insensitive about light, the back 关键词：image processing;target detection;light mutation;background modeling- 344
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发布时间：2020-07-06 - 摘要：
With the development of display technology, liquid crystal displays integrated with touch panels have been widely used in the daily production and life. Quality touch-integrated display panels play an important role in the human-computer interaction. However, the external touch panel is thinner and thinner, the distance between the touch sensor and LCD driver is reduced, resulting in a closer coupling among these two, which leads to more serious noise interference from LCD to touch panel. In this paper, we 关键词：touch panel;noise interference;source driver- 363
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发布时间：2020-07-06 - 摘要：
Using the contrast sensitivity characteristics of human visual system (HVS) and the texture features of image, a watermarking algorithm for color images is proposed. In the algorithm, the image is firstly divided according to the texture features of image, then the watermark is embedded into the complex texture part of image, and the embedding amount of watermark is controlled by the contrast sensitivity threshold of HVS, which finish embedding the watermark. Finally, the watermark is extracted by the inver 关键词：image watermark;visual characteristics;texture features;peak signal to noise ratio- 295
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发布时间：2020-07-06 - 摘要：
In order to solve the problems that the Oriented FAST and Rotated BRIEF (ORB) algorithm does not have the feature of scale invariance, the highly false positive rate and the bad quality of the spliced image, this paper provides an improved ORB algorithm for image stitching. Firstly, a feature-based detection algorithm based on the same scale is used to detect the feature points of the image. Then the features of the detected feature points are described by using the ORB descriptor, and then the ORB matching 关键词：scale invariant;bidirectional matching;image registration;image stitching- 328
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发布时间：2020-07-06 - 摘要：
Aiming to the automatic screening of cervical cytology, an intelligent auxiliary diagnosis method was proposed. At first, semantic segmentation method based on the improved UNet deep convolution neural network model was applied to detect the region of cells (cell clusters) on the scanning image of cervical cytology. Secondly, VGG 16 deep convolution neural network model combined with transfer learning was utilized for the exact diagnosis of the detected region of cells (cell clusters). The data augmentation 关键词：cervix;cytopathology;deep convolution neural network;data augmentation;transfer learning;intelligence-assist screening test- 321
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发布时间：2020-07-06
Image Processing
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