最新刊期
期 8 ， 2019
- 摘要：
In order to improve the efficiency of the top emitting OELD and reduce the driving voltage, a low-cost reproducible square microstructure array substrate for top-emitting OLEDs was fabricated based on nanosecond laser etching technology. Based on this substrate, the green top-emitting OLED devices were fabricated. It is found that the microstructure array substrate can effectively improve the light extraction efficiency and reduce the driving voltage of the device. Among them, the maximum efficiency of the 关键词：top-emitting OLEDs;microstructure array;nanosecond laser etching- 355
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发布时间：2020-12-14 - 摘要：In this paper, the line defects in the TFT-LCD rubbing process are analyzed, and the two directions of reducing ESD(Electro Static Discharge) risk are verified by cutting verification and design change. Through the analysis of the actual verification results, it is found that reducing the area of the Dummy pattern or connecting the dummy pattern toVcom, and improving the distance from the Dummy pattern to the signal line above 60 μm, can greatly reduce the probability of ESD occurrence, and the defect ratio is reduced from 20% to 0%. The results fully demonstrate that this design can be applied to the actual product design to reduce the ESD risk during the rubbing process.关键词：TFT-LCD;electro static discharge;electro static protect
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发布时间：2020-12-14 - 摘要：
In order to improve the response speed of the traditional modal electrode liquid crystal lens, a modal electrode pi-cell liquid crystal lens is designed. Combining the theory of liquid crystal continuum and the model of resistance-capacitance equivalent circuit of modal electrode liquid crystal lens, a fast calculation method is proposed to simulate the liquid crystal lens. The simulation results are in good agreement with the test parameters of actual device. It shows that the simulation method has high pr 关键词：liquid crystal lens;pi-cell;response time;modal electrode;optical path difference- 347
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发布时间：2020-12-14 - 摘要：
In the manufacturing process of TFT-LCD, Particles are commonly-encountered defects, which results in a high reject ratio when producing mobile products by rubbing technology in higher-generation production line (8.5 generation line). Focusing on the Particles arising from producing mobile dvices in 8.5 generation line, we analyzed its cause and mechanism. The analysis shows that the Particles originate from rubbing procedure. The mechanism suggests that as the rubbing roller rubs the glass substrate, the c 关键词：particle;mobile product;single roller friction;optical alignment;after rubbing cleaner- 377
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发布时间：2020-12-14 - 摘要：
The deposition of tungsten film through laser chemical vapor deposition (LCVD) was investigated for the repair of circuit defects of TFT-LCD panels, simultaneously the film-forming process parameters influencing the damage of thin film transistor substrate, electrical resistance of tungsten film were discussed. Firstly, the pulsed laser irradiation at 351 nm was used to deposit tungsten from W(CO)6 in air atmosphere, and the damage of thin film transistor substrate at diverse film-forming process parameters 关键词：TFT-LCD;laser chemical vapor deposition;defect repair;W(CO)6;electrical resistivity- 345
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发布时间：2020-12-14 - 摘要：In order to reduce the occurrence of touch abnormal in the production process and client-side, improve the yield, the influence of IC bonding on touch abnormal of TDDI(Touch and Display Driver Integration) structure was studied in this paper. Firstly, Synaptics IC manufacturer's capacitance testing results was used to identify the types of touch abnormal. Then, which had problems, the panel or IC was to be confirmed according to the IC cross validation results. The results show that the IC bonding particles have small deformation and contact area due to the ACF thickness, and it causes greater contact resistance and touch abnormal. The defect ratio is improved by replacing a thinner ACF, and it is decreased from 3.935×10-3 to 8.38×10-4 in module factory and decreased from 1.5×10-3 to 0 in customer. Improving the state of IC binding particles can effectively reduce the occurrence of TP fail by changing the thickness of ACF.关键词：IC bonding;touch and display drivers integration;ACF
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发布时间：2020-12-14 - 摘要：
The field-sequential-color display has the advantages of high resolution and low power consumption compared to the traditional spatial sub-pixel display but it is deeply troubled by color breakup. Solving this problem is crucial for the development of the field-sequential-color display. Based on the 240 Hz liquid crystal display, 4-field local-primary-desaturation algorithm is proposed in this paper. The center of gravity is selected as the fourth backlight color, and distributes the luminance information a 关键词：field-sequential-color display;color breakup;4-field local-primary-desaturation algorithm;perception experiment;partition number- 321
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发布时间：2020-12-14 - 摘要：
In the process of acquisition and correction, the brightness information of each luminous pixel can not be accurately obtained due to the camera's own halo characteristics, which results in poor display effect of the LED display after correction. In order to solve this problem, this paper proposes a camera vignetting compensation algorithm based on statistical principle, which firstly eliminates high-frequency aliasing noise by Gaussian filtering, and then eliminates the brightness dispersion of LED luminou 关键词：LED display screen;vignetting compensation;discretization correction;Gauss filter- 331
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发布时间：2020-12-14
Materials and Devices
- 摘要：In order to meet the needs of multi-channel Cameralink digital image transmission in aeronautical photoelectric pod, a multi-channel Cameralink digital image optical fiber transmission system with programmable logic device (FPGA) as the core processor is designed. The signal conversion of Cameralink digital image input and output is completed by using codec chip; the asynchronous FIFO data buffer module is designed to solve the matching problem between camera clock domain and Aurora protocol user clock domain; the image data is encoded and converted by using Aurora 8 B/10 B protocol, and the multi-channel digital image transmission is completed by combining with high performance wavelength division multiplexing optical module. The experimental results show that the error rate of digital image data transmission is less than 10-12, and the image transmission effect is clear and stable. It can be applied to multi-channel cameralink digital image transmission.关键词：cameralink;optical Fiber;FPGA;asynchronous FIFO;Aurora 8 B/10 B protocol
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发布时间：2020-12-14 - 摘要：
In order to filter a large amount of redundant background information, improve the speed of target detection and solve the difficult access problem of target spectrum, a fast hyperspectral target detection algorithm which is fused on spectral derivative, recomposition and spectral angle mapper is proposed. Firstly, the derivative of background spectrum is calculated and reordered to find a spectral set with less background information. Secondly, each pixel of the spectral image in the corresponding spectral 关键词：spectral derivative;spectral recomposition;spectral angle mapper (SAM);fast target detection;hyperspectral imaging- 328
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发布时间：2020-12-14 - 摘要：
A spectral residual and gradient texture fusion feature is proposed to detect ship targets in complex sea backgrounds in visible-light-remote sensing image. Firstly, the spectral residual model is used to locate the suspected ship target, while the adaptive dynamic threshold method is used to obtain the candidate target region. Then, according to the shape characteristics of the ship, the gradient direction histogram features are improved to design the gradient direction characteristics that show the featur 关键词：ship detection;spectral residual;gradient direction feature;uniform LBP;gray level co-occurrence matrix;AdaBoost classifier- 349
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- 11
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发布时间：2020-12-14 - 摘要：
In order to solve the problem of low face recognition rate in uncontrolled scenes, a face recognition algorithm based on sparse principal component representation and low rank decomposition in uncontrolled scenes is proposed. Firstly, the basic face database is constructed by the data collected by the core basic information platform, and then the classroom photos are collected and the sampled photos are segmented by principal component sparse representation and low rank decomposition algorithm. Finally, the 关键词：uncontrolled scenes;principal components;sparse representation;low rank decomposition;face recognition- 310
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发布时间：2020-12-14 - 摘要：
In computer vision tasks, balancing the accuracy and speed of object detection plays a significant role in subsequent practical applications such as object tracking and recognition. An object detection algorithm based on attention mask fusion is proposed. Firstly, the VGG network is used to extract features, and a series of preselected boxes are obtained after preliminary regression and binary classification. Then, the preselected boxes are input into the feature pyramid structure, learning effective featur 关键词：computer vision;object detection;attention mask;feature pyramid;multiscale detection- 362
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发布时间：2020-12-14
Image Processing
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