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检索条件"机构=Key Laboratory of Advanced Display and System Application"

共 691 条记录，以下是421-430 订阅

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The Effect of Functionalized Silver on Properties of Conductive Adhesives

The Effect of Functionalized Silver on Properties of Conduct...

引用

2011 12th International Conference on Electronic Packaging Technology & High Density Packaging(2011 电子封装技术与高密度封装国际会议)

作者： Dongsheng Li Qiong Fan Huiwang Cui Johan Liu Zhili Hu Zhichao Yuan Lilei Ye Key Laboratory of Advanced Display and System Applications Ministry of Education and SMIT Center S Key Laboratory of Advanced Display and System Applications Ministry of Education and SMIT Center S Shang Da Rui Hu Microsystem Integration Technology Co.Ltd Room 101 Science &Technology Building S SMIT Center Department of Microtechnology and Nanoscience Chalmers University of Technology SE-412

This research used low molecular surface modifiers and observed that chemisorptions took place through the formation of a bond between silver surface and an adsorbed molecule, which improved the dispersion of silver flakes in the organic resin. Results of shear viscosity, bulk resistivity etc. showed that by using these low molecular organic functionalizers, isotropic conductive adhesives (ICAs) with lower shear viscosity and better electrical conductivity at high silver fillers content were obtained. Different processing methods and different matrixes were compared.

关键词： Silver Conductivity Viscosity Conductive adhesives Curing Resins Dispersion

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A no-reference image quality evaluation based on power spectrum

A no-reference image quality evaluation based on power spect...

引用

3DTV Conference

作者： Yan Zhang Ping An Qiuwen Zhang Liquan Shen Zhaoyang Zhang School of Communication and Information Engineering Shanghai University China Department of Computer Science and Technology Anhui University of Finance and Economics China Key Laboratory of Advanced Displays and System Application Ministry of Education China

ISBN: (纸本)9781612841618

No-reference quality evaluation is more difficult because it does not refer to any image. However, in some cases, like virtual view images, can not find the reference image, no-reference method had to be used. With the free viewpoint video technology development and application, measuring the performance of the multiview video system is essential and virtual view image quality evaluation is one of the key technologies in the system. The characteristic of virtual view image quality evaluation is that most of the virtual view images haven't reference images and can't be assessed using general measures such as PSNR of full-reference. Therefore, this paper proposed a no-reference image quality evaluation method based on image power spectrum. Experimental results show that the proposed method is consistent with PSNR.

关键词： PSNR Image quality Three dimensional displays Transform coding Mathematical model Speckle

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An improved depth map estimation for coding and view synthesis

An improved depth map estimation for coding and view synthes...

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IEEE International Conference on Image Processing

作者： Qiuwen Zhang Ping An Yan Zhang Liquan Shen Zhaoyang Zhang School of Communication and Information Engineering Shanghai University China Key Laboratory of Advanced Displays and System Application Ministry of Education China Department of Computer Science and Technology Anhui University of Finance and Economics China

Inaccuracy depth estimation may influence on depth coding and virtual view rendering in the free-viewpoint television (FTV) system, an improved depth map estimation is proposed to solve the problem for coding and view synthesis. Firstly, check the consistency of initial depth, and the influence of initial miss-matches is minimized by introduction of an additional adaptive matching error selection that penalizes the unreliable matches. Then according to certain criteria, the multi-reference depth maps are merged into one disparity map to improve the quality of disparity map. Finally, a multilateral filtering is used to preserve details in the depth map and simultaneously smooth the depths in occluded areas at object boundary, less texture and discontinuity regions. Experimental results show a significant improvement of the initial input depth maps and coding efficiency, as well as a reduction of view synthesis artifacts.

关键词： Estimation Image coding Rendering (computer graphics) Transform coding Three dimensional displays Filtering

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Improved multi-view depth estimation for view synthesis in 3D video coding

Improved multi-view depth estimation for view synthesis in 3...

引用

3DTV Conference

ISBN: (纸本)9781612841618

Multi-view depth estimation is an important part in the virtual view synthesis and depth map coding within the 3DV/FTV applications. However, existing depth estimation methods generally have difficulty to generate good depth results around object edges or in areas with less texture. To solve this problem, we propose an improved algorithm to obtain a smooth and accurate depth map for view synthesis in 3D video coding. The proposed method aims to preserve details in the depth map and simultaneously smooth depths in object boundary occluded area, less texture and discontinuity regions, to avoid blurring in the synthesized views. Experimental results show a significant improvement of the initial input depth maps and coding efficiency, as well as a reduction of view synthesis artifacts.

关键词： Estimation Pixel Three dimensional displays Encoding Rendering (computer graphics) Image coding Transform coding

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Efficient rendering distortion estimation for depth map compression

Efficient rendering distortion estimation for depth map comp...

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IEEE International Conference on Image Processing

作者： Qiuwen Zhang Ping An Yan Zhang Zhaoyang Zhang School of Communication and Information Engineering Shanghai University China Key Laboratory of Advanced Displays and System Application Ministry of Education China Department of Computer Science and Technology Anhui University of Finance and Economics China

A depth map represents three-dimensional (3D) scene information and is used to synthesize virtual views in 3D video. Since the quality of synthesized virtual views highly depends on the quality of depth map, efficient depth compression is crucial to realize the 3D video system. However compressing depth map using existing video coding techniques yields unacceptable distortions while rendering virtual views. To solve this problem, we propose an efficient depth map compression method for the view rendering, a novel distortion metric base on view rendering distortions instead of distortion of depth map itself. First, we derive relationships between distortions in coded depth map and rendered view. Then, a region based video characteristics distortion model is proposed for precisely estimation distortion in view synthesis. Finally, experimental results have shown that 1.8 dB coding gain in terms of PSNR and subjective quality improvement of synthesized views are achieved by the proposed method.

关键词： Image coding Rendering (computer graphics) Three dimensional displays Cameras Geometry Encoding Estimation

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Simulations for A Novel Fluid Dispensing Technology Based on Gas-liquid Slug Flow

Simulations for A Novel Fluid Dispensing Technology Based on...

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2011 12th International Conference on Electronic Packaging Technology & High Density Packaging(2011 电子封装技术与高密度封装国际会议)

作者： Peng Peng Jianhua Zhang Jinsong Zhang Key Laboratory of Advanced Display and System Applications of Ministry of Education Shanghai University China School of Mechatronics Engineering and Automation Shanghai University China Yanchang Road 149 Shanghai City China

The fluid dispensing is one of the key technologies in electronic packing. A novel approach of non-contact fluid dispensing has been proposed based on the principle of gasliquid two-phase flow. In view of gas-liquid two-phase dynamics, the flow pattern of slug flow can be obtained stably in the microchannel as the flow rate ratio between the gas and liquid is in an appropriate range. The slug flow can generate fluid droplets and gas bubbles and spray them out of the nozzle with uniform interval, accurate volume, good consistency, high controllability and no back haul. This paper carried out the numerical simulation to investigate the gasliquid two-phase flow in the microchannel for the adhesive dispensing. A 2-D model of microchannel with a diameter for 0.04 mm was established and meshed. The gas-liquid slug flow emerges after iterating over 1 million steps with the gas flow rate for 0.1 m/s, the water flow rate for 0.05 m/s. The wetting property controlled by the contact angle had been discussed to present different liquid materials application. The poor wetting of liquid benefited for conforming droplets shape and avoiding droplets crashing and back haul. While the gas flow rate decreased, the length of liquid droplet and gas bubble increased and decreased, respectively and the total numbers of bubble and droplet decreased in one period. This indicated the fluid parameters have a high relationship with the quantity and volume of droplet.

关键词： Microchannel Fluids Numerical models Mathematical model Shape Equations

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Comparisons of Nano-Additives Influence on Properties of the Bi-Modal Solder Pastes for Special applications

Comparisons of Nano-Additives Influence on Properties of the...

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2011 12th International Conference on Electronic Packaging Technology & High Density Packaging(2011 电子封装技术与高密度封装国际会议)

作者： Janusz Sitek Krystyna Bukat Marek Koscielski Aneta Arazna A.Mlozniak Malgorzata Jakubowska Shiwei Ma Yan Zhang Johan Liu Qijie Zha Yulai Ga Tele and Radio Research Institute 03-450 Warsaw 11 Ratuszowa St. Poland Institute of Electronic Materials 133 Wolczynska Str. 01-919 Warsaw Poland Key Laboratory of Advanced Display and System Applications Ministry of Education & SMIT Center Sch Key Laboratory of Advanced Display and System Applications Ministry of Education & SMIT Center Sch School of Materials Science and Engineering Shanghai University Shanghai 200072 China

The paper presented the results of investigation of two solder pastes SnBi and SAC with different nano-particles, which could be applied for special application. It was presented that materials and samples preparation for investigation. The results of SEM analyzer of solder joints executed using these pastes and their shear strength measurements enable to make the comparison of nano-additives influence on properties of the bi-modal solders pastes. It was observed that addition of nano-particles into both solder pastes changed the microstructure of solder joints, and formed a large number of nano-sized grains with uniform distribution. For the SAC solder joints with nano-Ag particles it was also observed that specific Ag3Sn crystallites. We supposed that the Ag3Sn crystals, which created “internal net” and nano-sized grains with uniform distribution must influence the mechanical properties of the solder joints. The results of shear strength measurements of solder joints confirmed the significantly higher shear strength of bimodal solder joints in comparison to reference solder joints without nano-additives.

关键词： Soldering Lead Microstructure Materials Packaging Nanoparticles

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IGZO-TFT Driven AM-OLED displays

IGZO-TFT Driven AM-OLED Displays

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第七届全国暨华人有机分子和聚合物发光与光电特性学术会议

作者： Jun Li Liang Zhang Fan Zhou Jia-Hua Zhang Hua-Ping Lin Xue-Yin Jiang Zhi-Lin Zhang Department of Materials Science Shanghai University Jiading Shanghai 201800 People''s Republic of China Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University Shanghai 200072 People ''s Republic of China Department of Materials Science Shanghai University Jiading Shanghai 201800 People''s Republic of China Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University Shanghai 200072 People ''s Republic of China

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Study of Light Emitting Diodes for the application of Plant Growth in Green House

Study of Light Emitting Diodes for the Application of Plant ...

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2011 12th International Conference on Electronic Packaging Technology & High Density Packaging(2011 电子封装技术与高密度封装国际会议)

作者： Meijuan Fu Lianqiao Yang Jianhua Zhang Key Laboratory of Advanced Display and System Applications (Shanghai University) Ministry of Educat Department of Materials Science and Engineering Shanghai University，P.O.B 143 149 Yanchang Rd. Sh

In this paper, the reliability issue of the LED lamp in high temperature and moisture condition was investigated. Thermal stress and hygroscopic stress in the LED package were obtained by coupled-field analysis using Finite element analysis (FEA). The results demonstrate that the temperature of the module can reach saturation in tens of seconds while the moisture field needs longer to reach balance. 85℃/85RH can reach the same distribution of relative humidity with 65℃/65RH, but the time spent is half. So temperature is the important factor to affect the humidity distribution. The moisture concentration is better than the relative humidity response to the material moisture level. So we made further research on hygroscopic stress. Both the thermal stress and hygroscopic stress contributed to the delaminations in LED packages.

关键词： Stress Moisture Light emitting diodes Electronic packaging thermal management Temperature Materials Thermal stresses

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Skill and tactic analysis for table tennis matches

Skill and tactic analysis for table tennis matches

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International Conference on Computer Science and Service system (CSSS)

作者： Ye-peng Guan Yong Ye Jing-jing Li Jing Si Hui Zhang School of Communication and Information Engineering Shanghai University Shanghai China Key Laboratory of Advanced Displays and System Application Ministry of Education Shanghai China School of Physical Education and Sports Coaching Shanghai University of Sports Shanghai China

Due to complexity, multiplicity and randomness of table tennis matches, it is necessary to develop some skill and tactic diagnostic models especially an efficient scoring model to get some skill and tactics data for table tennis matches. A scoring model is developed for table tennis matches based on video image processing technology. An input match video is used to analysis the skill and tactic of the players. Once the player scored more than some criteria points constantly, it records this particular event either in the notebook or in database to arouse his attention. By playing the fragment of the record video either slow or fast as he likes, the player can know not only the reason why he lose the points, but also know the skill and tactic of the opponent. Besides it gives a dynamic grow of histogram for every score. The proposal improves the efficiency and quality of the matches. Moreover it provides an efficient guidance in the future's plan making, practice or competition for coachers and athletes.

关键词： Histograms Databases Streaming media Games Data acquisition Data models Load modeling

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