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International Conference on Signal Processing Proceedings (ICSP)

作者： Qiuwen Zhang Ping An Yan Zhang Qian Zhang Zhaoyang Zhang School of Communication and Information Engineering Shanghai University Shanghai China Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai China School of Information Engineering Anhui University of Finance and Economics Bengbu China

Multiview video plus depth (MVD) is a new 3D video format that would support 3D video applications. The primary goals are the high-quality reconstruction of an arbitrary number of views for 3D television (3DTV) and free viewpoint television (FTV). Its quality depends highly on the quality of depth image, a depth compression base B-spline interpolation is proposed for MVD to improve the 3D video coding (3DVC). The depth map is down sampling prior to multiview video coding (MVC) encoding and up sampling after decoding. The results investigated by objective as well as subjective evaluations over several multi-view test sequences imply that the proposed methods reduce the bit-rate for depth coding and achieve better rendering quality.

关键词： Encoding Three dimensional displays Rendering (computer graphics) Low pass filters Nonlinear filters Maximum likelihood detection Bit rate

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High efficiency WOLEDs with low-voltage and high carriers balance

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Guangdianzi Jiguang/Journal of Optoelectronics Laser 2010年第3期21卷 328-330页

作者： Wei, Fu-Xiang Fang, Liang Jiang, Xue-Yin Zhang, Zhi-Lin Institute of Materials Science and Engineering China University of Mining and Technology Xuzhou 221116 China Key Laboratory of Advanced Display and System Application Institute of Materials Science and Engineering Shanghai University Shanghai 201800 China

White organic light emitting devices(OLEDs) with the structure of ITO/m-MTDATA: x%4F-TCNQ/NPB/TBADN: EBDP: DCJTB/Bphen: Liq/LiF/Al are demonstrated. A p-doping transport layer that includes 4F-TCNQ doped into m-MTDATA is used as hole transporting layer(HTL) and an n-doping transport layer comprised of Liq doped into Bphen is used as electron transporting layer (ETL) to lower cathode barrier and facilitate carrier injection. An effective carrier balance (the number of holes is equal to the number of electrons) between holes and electrons is considered to be one of the most important factors to improve OLEDs. The holes injection and transport of the devices are controlled by adjusting doping concentration of 4F-TCNQ for good balance of carriers. The maximum current efficiency and power efficiency of devices are 9.3 cd/A and 4.6 lm/W, respectively.

关键词： Current density

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Polymer nanofiber based continuous metal phase composite for thermal management applications

Polymer nanofiber based continuous metal phase composite for...

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Electronics system-Integration Technology Conference, ESTC

作者： Björn Carlberg Johan Liu Li-Lei Ye Department of Microtechnology and Nanoscience (MC2) Chalmers University of Technology Gothenburg Sweden Key Laboratory of Advanced Display and System Applications & SMIT Center Shanghai University Shanghai China SHT Smart High-Tech AB Gothenburg Sweden

A new composite design approach for thermal interface materials is presented. A porous electrospun nanofiber network composed of temperature stable polyimide was infiltrated with liquid phase indium at a pressure of 30 MPa. The polymer phase defines composition and geometry, while the continuous metal phase gives binding to surfaces and high thermal conductivity. The composite was characterized by assembly of tri-layer copper/TIM/copper sandwich structures and subsequent xenon flash measurements extracting the thermal properties of the intermediate TIM layer. The interfacial contact resistance was found to be 8 Kmm 2 /W and the thermal conductivity was 28 W/mK, indicating the potential for use in thermal management applications.

关键词： Thickness measurement Copper Materials reliability Detectors Thermal conductivity Phase measurement Polymers

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New intermediate view synthesis method based on Tikhonov regularization

New intermediate view synthesis method based on Tikhonov reg...

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International Conference on Signal Processing Proceedings (ICSP)

作者： Q. Zhang P. An Z.-Y. Zhang Qiuwen Zhang School of Communication and Information Engineering Shanghai University Shanghai P. R. China Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai P. R. China Shanghai University Shanghai Shanghai CN

The intermediate view synthesis from arbitrary view is a challenging topic in multi-view areas, many image-based rendering methods have been proposed to solve this problem. A new multi-view intermediate view synthesis method based on Tikhonov regularization function is proposed to synthesis view from limited number of source views. The experiments show good results of the synthesized views.

关键词： Bidirectional control Cost function Cameras Pixel Image color analysis Image reconstruction PSNR

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MDS investigation on the heat transfer properties of CNT micro-channel cooler

MDS investigation on the heat transfer properties of CNT mic...

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Electronics system-Integration Technology Conference, ESTC

作者： Yan Zhang Shun Wang Jing-yu Fan Johan Liu Key Laboratory of Advanced Display and System Applications Ministry of Education and SMIT Center School of Mechatronics Engineering and Automation Shanghai University Shanghai China Shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai China SMIT Center & Bionano Systems Laboratory Department of Microtechnology and Nanoscience Chalmers University of Technology Gothenburg Sweden

With the continuously increasing packaging density, the corresponding techniques for heat dissipation are vital to high performance components. During the system operation, the heat generated by components must be efficiently transferred outside of the electronic package. To meet the heat removal requirement of the electronic devices with a high power, several liquid cooling schemes have been suggested, among which the micro-channel cooler have gained the most attention. Simultaneously, the carbon nanotube (CNT) has attracted a significant interest in the material properties and exploratory application. Some studies have been recently conducted to evaluate the thermal performance of the CNTs and their applicability for heat removal in integrated circuit (IC) devices. By utilizing the adhesive transfer process to form the CNT bundles as the fins during the micro-channel development, the devices can be immune from the high temperature required by the CNT growth process. In the present paper, the interface heat transfer in the CNT-based micro-channel cooler has been investigated. The thermal resistances introduced by the interface between the CNT and the epoxy due to adhesive transfer and the interface between the CNT and water have been simulated by molecular dynamics simulation (MDS) method. And the thermal resistance at the interface between the CNT and the epoxy is about 1.0×1.5 - 10 -8 Km 2 /W. The obtained MDS results are likely to provide the microscopic understanding of the thermal performance of the CNT micro-channel cooler as well as provide references to the macroscopic evaluation of the thermal efficiency for the micro-channel cooler design and optimization.

关键词： Heat transfer Thermal resistance Carbon nanotubes Conductivity Materials

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Anisotropic thermal conductivity in electrically conductive adhesives with single- and bimodal filler-size distributions containing Ag flakes and micro-particles

Anisotropic thermal conductivity in electrically conductive ...

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Electronics system-Integration Technology Conference, ESTC

作者： Masahiro Inoue Hiroaki Muta Shinsuke Yamanaka Johan Liu Institute of Scientific and Industrial Research Osaka University Osaka Japan Division of Sustainable Energy and Environmental Engineering Graduate School of Engineering Osaka University Suita Osaka Japan Key Laboratory of Advanced display and System Applications and SMIT Center Shanghai University Mechatronics Engineering Shanghai China

Adhesives containing Ag flakes and spherical micro-particles were prepared. The variations in their electrical and thermal conductivities with matrix chemistry and curing temperature were investigated. Due to the alignment of Ag flakes along the in-plane direction, the adhesives containing only Ag flakes provided maximum thermal conductivity in this direction. Introduction of Ag spherical micro-particles effectively improved the thermal conductivity in the vertical direction for the bi- and single-modal adhesives. The adhesives containing only micro-particles are expected to be most effective from the viewpoint of the number of interfaces. However, the filler size distributions that provide maximum thermal conductivity in the vertical direction alter depending on the matrix chemistry and curing temperature due to variation in the interfacial thermal resistance between fillers.

关键词： Heating Annealing Temperature measurement Variable speed drives Resins

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Efficient and stable white organic light-emitting device with dual emission layer consisting of cohost system

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Guangdianzi Jiguang/Journal of Optoelectronics Laser 2010年第6期21卷 825-828页

作者： Wang, Qiang Zhu, Wen-Qing Xu, Xiao-Ming Zhang, Xiao-Wen Cao, Jin Jiang, Xue-Yin Zhang, Zhi-Lin School of Material Science and Engineering Shanghai University Shanghai 200072 China Key Laboratory of Advanced Display and System Applications EMC Shanghai University Shanghai 200072 China

An efficient and stable white organic light-emitting device(OLED) with dual emission layer consisting of cohost system is demonstrated. The blue-emitting layer is composed of fluorescent dye DSA-Ph doped into single host TBADN (TBADN: 3 wt% DSA-Ph) while the red-emitting layer is fluorescent dye DCJTB doped into cohost system consisting of TBADN and Alq3 ([TBADN: Alq3]: 1wt% DCJTB). The device luminous efficiency and CIE color coordinates could be adjusted by altering the ratio of TBADN to Alq3 in the red-emitting layer. An efficient and stable white OLED with excellent color coordinates is achieved when an optimized ratio (75:25) of TBADN to Alq3 is used. The maximum luminous efficiency reaches 6. 27 cd/A with CIE color coordinate of (0. 364, 0. 348) at the current density of 20 mA/cm2. When the current density increases to 200 mA/cm2, the device luminous efficiency still remains at 6. 15 cd/A with CIE color coordinate of (0. 344, 0. 344). The improved performance of the white OLED is mainly attributed to the ambipolar property of TBADN, which results in the improvement of carrier balance and distribution in the emission layer.

关键词： Current density

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Anisotropic thermal conductivity in electrically conductive adhesives with single- and bimodal filler-size distributions containing Ag flakes and micro-particles

Anisotropic thermal conductivity in electrically conductive ...

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3rd Electronics system Integration Technology Conference, ESTC 2010

作者： Inoue, Masahiro Muta, Hiroaki Yamanaka, Shinsuke Liu, Johan The Institute of Scientific and Indistrial Research Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan Division of Sustainable Energy and Environmental Engineering Graduate School of Engineering Osaka University 2-1 Yamadaoka Suita Osaka 565-0871 Japan Department of Microtechnology and Nanoscience Chalmers University of Technology Kemivägen 9 SE-412 96 Göteborg Sweden Key Laboratory of Advanced Display and System Applications SMIT Center Shanghai University Box 282 No. 149 Yan Chang Road Shanghai 200072 China

ISBN: (纸本)9781424485536

关键词： Adhesives

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Warpage simulation for LCD interconnected by NCF

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Cailiao Kexue yu Gongyi/Material Science and Technology 2010年第6期18卷 857-861页

作者： Zhang, Jian-Hua Yuan, Fang Zhang, Jin-Song Key Laboratory of Advanced Display and System Applications of Ministry of Education Shanghai University Shanghai 200072 China College of Mechatronics Engineering and Automation Shanghai University Shanghai 200072 China

To study the reliability of the Chip-on-Glass (COG) module interconnected by Non-Conductive-Adhesive (NCF), this paper applied finite element method (FEM) to simulate the fields of temperature and stress in COG. A 3D model of the COG module had been established and a sequence coupled field had been done to calculate the warpage and inner stress. In the thermalcompression bonding stage, the thermal process was a steady state, which produced a low temperature difference in the COG module, while the NCF absorbed and relaxed the thermal stress and strain to weaken warpage. In the cooling stage, the process was non-steady and a significant temperature difference between the interfaces of bump/NCF and NCF/substrate was induced at the beginning. This generated a high thermal stress difference to yield a large warpage. The residual stress and warpage were proportional to the decrease of the mechanical loading in the thermal compression bonding stage and the temperature difference in the cooling stage.

关键词： Glass

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Motion attention based frame-level bit allocation scheme for H.264 09

Motion attention based frame-level bit allocation scheme for...

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1st International Conference on Internet Multimedia Computing and Service, ICIMCS 2009

作者： Shen, Liquan Liu, Zhi Zhang, Zhaoyang Yan, Hongbo Key Lab. of Advanced Display and System Application Ministry of Education Shanghai University China

ISBN: (纸本)9781605588407

Rate control plays a major role in video coding and multimedia streaming. A well-designed rate control scheme should pursue both the objective quality and subjective quality. However, existing H.264 rate control algorithms mainly aim at improving the objective quality without consideration the perception of human view system (HVS). In this paper, we propose a novel rate control algorithm based on local motion attention. The bits allocated to each frame are proportional to the local motion activity in it, and more bits are allocated to the frame with strong local motion attention. Experiment results show that our method not only enhances the coding quality in the frames with strong local motion attention but also reduces the temporal PSNR fluctuation across frames up to 22.15%. Copyright 2009 ACM.

关键词： Image coding

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