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High-performance thin film encapsulation for the application of white organic light-emitting diodes

作者： Liao, Yingjie Liu, Jizhong Zhang, Yong Li, Long Yu, Fangfang Wei, Bin Key Laboratory of Advanced Display and System Applications Shanghai University Ministry of Education Shanghai 200072 China School of Mechanical and Electronic Engineering and Automation Shanghai University Shanghai 200072 China

ISBN: (纸本)0878492119

Color conversion method has been used to fabricate chromatic-stability white organic light-emitting diodes (OLEDs). Experimental results found little CIE coordinate migration while changing operation voltage from 5 V to 12 V. A simple thin-film encapsulation (TFE) structure has been developed through vacuum thermal deposition in combination with plasma enhanced chemical vapor deposition. The luminance of the encapsulated white OLED remain unchanged during the test time. The novel approach is being expected to lower the cost and achieve high-performance TFE. © (2011) Trans Tech Publications.

关键词： Plasma enhanced chemical vapor deposition

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3DV quality model based depth maps for view synthesis in FTV system

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Journal of Shanghai University(English Edition) 2011年第4期15卷 335-341页

作者：张秋闻安平张艳张兆杨王元庆 Key Laboratory of Advanced Display and System Application (Shanghai University) Ministry of EducationShanghai 200072P.R.China School of Communication and Information Engineering Shanghai University Department of Computer Science and Technology Anhui University of Finance and EconomicsBengbu 230030AuhuiP.R.China Department of Electronics Science and Engineering Nanjing University

Depth maps are used for synthesis virtual view in free-viewpoint television （FTV） systems. When depth maps are derived using existing depth estimation methods, the depth distortions will cause undesirable artifacts in the synthesized views. To solve this problem, a 3D video quality model base depth maps （D-3DV） for virtual view synthesis and depth map coding in the FTV applications is proposed. First, the relationships between distortions in coded depth map and rendered view are derived. Then, a precisely 3DV quality model based depth characteristics is develop for the synthesized virtual views. Finally, based on D-3DV model, a multilateral filtering is applied as a pre-processed filter to reduce rendering artifacts. The experimental results evaluated by objective and subjective methods indicate that the proposed D-3DV model can reduce bit-rate of depth coding and achieve better rendering quality.

关键词： free-viewpoint television （FTV） 3D video quality model base depth maps （D-3DV） view synthesis

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The influence of the Si02 gate insulator thickness to the performance and Bias-voltage stress stability of ZnO thin-film-transistors

The influence of the Si02 gate insulator thickness to the pe...

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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： Fan Zhou Huaping Lin Jun Li X.Y.Jiang Z.L.Zhang Jianhua Zhang School of Materials Science and Engineering Shanghai University Shanghai 200072 China School of Materials Science and Engineering Shanghai University Shanghai 200072 China Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai University 200072China Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai University 200072China

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Study into the application of Single-Wall Carbon Nanotubes in Isotropic Conductive Adhesives

Study into the Application of Single-Wall Carbon Nanotubes i...

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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： Dongsheng Li Qiong Fan Yajun Duan Huiwang Cui Zhichao Yuan Lilei Ye Johan Liu 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 Key Laboratory of Advanced Display and System Applications Ministry of Education and SMIT Center S SHT Smart High Tech AB Fysikgrand 3 41296 Gothenburg SWEDEN Key Laboratory of Advanced Display and System Applications Ministry of Education and SMIT Center S

Isotropic conductive adhesives (ICAs) with stable contact resistance and high thermal conductivity are highly desirable. In this paper, a new ICA filled with silver fillers and singlewall carbon nanotubes (SCNTs) was developed. SCNTs were acidified in a mixture of 98% H2SO4 and 68% HNO3 with a volume rate of 3:1 at 50 0C for 3 h. Carboxyl and hydroxyl groups were produced on SCNTs, and the purity of SCNTs also greatly improved. To prepare the ICAs, acidified SCNTs were firstly ultrasonically dispersed in acetone, then added into the matrix resin, and finally mixed with silver fillers. The bulk resistivity of the fabricated ICAs filled with silver fillers and acidified SCNTs was larger, their lap shear strength lower, their contact resistance stability improved, and their moisture absorption remained almost unchanged. In the curing process, the released heat was greatly reduced and transferred to the surroundings for good thermal conductivity of SCNTs, but the curing temperature was not affected. Therefore, acidified SCNTs can be used in ICAs, and in general, will create a good effect on ICAs.

关键词： Silver Conductivity Curing Contact resistance Absorption Moisture Mechanical factors

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Content based sports video sequences analysis and synthesis

Content based sports video sequences analysis and synthesis

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2011 International Conference on Computer Science and Service system, CSSS 2011

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

ISBN: (纸本)9781424497638

It is very important to analyze and synthesize sports video sequences efficiently for improving competition. Aiming at some limits existing in literature with complex computation and low efficiency in analysis sport video, a novel method has been developed to analyze and synthesize sport videos by intercepting pictures manually or automatically based on visual content. A group of continuous pictures is intercepted automatically from sports video sequences firstly. Some pictures can be added and removed manually based on visual content secondly. Some concerning pictures containing some important semantic information can be gotten in this way. Each picture can be analyzed by some marks added and can be saved in a container. Each group of pictures can be found in the related folder easily and can be demonstrated continuously. Much time is saved and some important semantic information in the sport video can be obtained efficiently by the proposal. © 2011 IEEE.

关键词： Semantics

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Skill and tactic analysis for table tennis matches

Skill and tactic analysis for table tennis matches

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2011 International Conference on Computer Science and Service system, CSSS 2011

作者： Guan, Ye-Peng Ye, Yong Li, Jing-Jing Si, Jing Zhang, Hui 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 Sport Shanghai China

ISBN: (纸本)9781424497638

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. © 2011 IEEE.

关键词： Graphic methods

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Effects of Annealing Treatment on Optical and Electronic Properties of GaN Based LEDs with ITO Films

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ECS Transactions 2012年第1期44卷

作者： Wanjing Wang Xifeng Li Jinsong Zhang Jianhua Zhang Key Laboratory of Advanced Display and System Applications of Ministry of Education Shanghai University Shanghai University School of Mechatronics Engineering and Automation Shanghai University Shanghai University No 149 Yanchang Road Shanghai City Shanghai 200072 China

Indium-Tin-Oxide (ITO) film prepared by DC magnetron sputtering was used as a current spread layer for LEDs. After the annealing treatment, the physical prosperities of p-GaN based LED have been investigated. The N2 annealing improved the surface roughness of ITO film to reach the smallest value (8 nm RMS) and exhibited an ohmic contact for ITO/p-GaN interface with the forward voltage decreasing. In comparison with electron beam evaporation, the ITO film prepared by DC magnetron sputtering had better optical and electronic prosperities after the annealing treatment.

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A design of control system for the adhesive jetting machine

A design of control system for the adhesive jetting machine

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2011 International Conference on Computers, Communications, Control and Automation

作者： Jinsong Zhang Jianhua Zhang Haili Jia School of Mechatronics Engineering and Automation Key Laboratory of Advanced Display and System Applications of Ministry of Education Shanghai University

Fluid dispensing was one of the main packaging technologies in the electronics industry. This study developed a control system for the adhesive jetting machine to match the no-contact requirement with high frequency and *** main control body was the computer and the control objects were the motion platform, jetting dispenser and temperature controller. The system had two control levels: the top level for the body and the bottom level for the objects. The developed software applied a hybrid programming based on Lab VIEW and Motion Assist 2.0 to provide a better operation performance and friendly interface. The prototype machine could achieve the programmed tasks after the mechanical structure and control system fabrication and the developed software installation.

关键词： control system adhesive jetting machine hardware software

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Study on the Reliability of High-power LEDs under Temperature Cycle

Study on the Reliability of High-power LEDs under Temperatur...

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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： Fan Huang Luqiao Yin Shuzhi Li Guangming Xu Huafeng Yan Yu Chen Jianhua Zhang Lianqiao Yang Key Laboratory of Advanced Display and System Applications (Shanghai University) School of Mechatron Key Laboratory of Advanced Display and System Applications (Shanghai University Shanghai Research Center of Eengineering and Technology for Semiconductor Lighting Shanghai Yaming Lighting co. Ltd.Ministry of Education.P.O.B 143 149 Yanchang Rd. Shanghai Univer Key Laboratory of Advanced Display and System Applications (Shanghai University) School of Mechatron

High-power LEDs have been widely used and have a big potential market due to the many advantages compared to conventional light sources. Reliability is one of the most important issues for the application of LEDs. In order to study the degradation mechanism and the stability of LED withstanding cyclical exposures to temperature variations, life test was carried out under temperature cycle testing. The experiment was designed basing on the EIAJ ED-4701/100. Four groups of 1 W high power LEDs adopting different material and structures were utilized. The temperature cycle accelerated life test under the condition of -25℃/125℃. After the accelerated test, the optical performance of the four kinds of devices were compared and analyzed, and the thermal performance of the LEDs was also tested, analyzed and discussed. At last, the reliability differences of high-power LEDs were analyzed and degradation mechanism of high power LEDs under temperature cycling was discussed.

关键词： Light emitting diodes Life estimation Reliability Thermal analysis Degradation Junctions Electronic packaging thermal management

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Study into High Temperature Reliability of Isotropic Conductive Adhesive

Study into High Temperature Reliability of Isotropic Conduct...

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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： Wenhui Du Huiwang Cui Si Chen Zhichao Yuan Lilei Ye Johan Liu 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 Shangda Rui Hu Microsystem Integration Technology Co.Ltd Room 101 Science &Technology Building Sh Smart High Tech AB Fysikgrand 3 41296 Gothenburg SWEDEN Key Laboratory of Advanced Display and System Applications Ministry of Education and SMIT Center S

With the rapid development of technologies for high density assembly and packaging in electronic industry, isotropic conductive adhesive (ICA) has been paid more and more attention as a potential substitute for solder, due to its advantages of low processing temperature, simple processing conditions and good manufacturability. However, studies into the reliability of ICA are not as abundant as those of solder. As a composite material, the failure feasibility of ICA not only depends not only on the variation in performance of different constituent parts, such as high temperature aging of the polymer, aging due to moisture absorption and oxidization of filler particles, but also on interface changes. Thus, the failure mechanism of ICA seems to be complicated and studies into the reliability of ICA are also necessary. Reliability in humidity and heat has been investigated in previous works, and in this paper high temperature reliability will be studied as a comparison. Some reliability tests and results will be given and some failure mechanisms discussed. Finally, we present some discussion about the further optimization of reliability for follow-up studies.

关键词： Aging Reliability Conductivity Conductive adhesives Materials Packaging Temperature

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