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International Conference on (ICEPT) Electronic Packaging technology

作者： Lei Zhang Xiuzhen Lu Xin Luo Björn Carlberg Masoud Zandira Lilei Ye Johan Liu Key Laboratory of Advanced Display and System Applications Ministry of Education & SMIT Center School of Mechatronics Engineering and Automation Shanghai University Shanghai China SMIT Center & Bionano Systems Laboratory Department of Microtechnology and Nanoscience Chalmers University of Technology Gothenburg Sweden SHT Smart High Tech AB Gothenburg Sweden

With the continual increase in cooling demand for microprocessors, the microelectronics industry has been increasingly focused on the development of thermal solutions. Thermal Interface Material (TIM) plays a key role in reducing the thermal resistance of packaging and the thermal resistance between the electronic device and the external cooling components. Nano-TIM, a new type of thermal interface material, was developed to improve the heat dissipation of electronic devices. This paper describes work undertaken to research the reliability of Nano-TIM. Pull tests were used to investigate the shear strength of samples with Nano-TIM of different thicknesses coalesced between two PCBs with Sn coating made under different pressure. Scanning Electron Microscopy (SEM) analysis techniques were used to determine the morphology of the shear fracture section after pull tests and observe the structure of the cross section of Nano-TIM coalesced between two PCBs with Sn coating.

关键词： Materials Electronic packaging thermal management Thermal resistance Metals Heating Reliability Thermal conductivity

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Salient object segmentation based on graph cut

Salient object segmentation based on graph cut

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18th International Symposium on Intelligent Signal Processing and Communication systems, ISPACS 2010

作者： Shi, Ran Liu, Zhi Xue, Yinzhu School of Communication and Information Engineering Shanghai University China Key Laboratory of Advanced Display and System Application Ministry of Education China

ISBN: (纸本)9781424473717

Salient object segmentation is an important technique for many content based applications. This paper presents an unsupervised salient object segmentation method under the graph cut optimization framework. First, we exploit a kernel density estimation based saliency model to generate the saliency map, which provides the useful cues for object segmentation. Then we exploit the saliency map to adaptively define the region cost term, the boundary cost term and their balancing weight in the cost function, which is minimized using graph cut to obtain a binary segmentation of salient objects. Experimental results on a variety of images demonstrate the better segmentation performance of our approach. © 2010 IEEE.

关键词： Costs

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Low-voltage and high-stability p-type doped blue organic light-emitting diodes with bilayer hole injection layers

Low-voltage and high-stability p-type doped blue organic lig...

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8th International Vacuum Electron Sources Conference, IVESC 2010 and NANOcarbon 2010

作者： Lu, L. Yu, J.N. Long, L. Yu, F.F. Zhang, J.H. Zhang, H. Wei, B. Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai University 149 Yanchang Road Shanghai 200072 China

ISBN: (纸本)9781424466429

In recent years, organic light-emitting diodes (OLEDs) for the application of flat panel displays (FPDs) have been attracting many researchers. Blue OLEDs are the potential light source to make full color FPDs by color conversion method. However, due to a large energy bandgap of blue emission materials, blue OLEDs were widely reported to have relatively low luminance efficiencies and high operation voltage, compared to the devices with low energy emission wavelength. © 2010 IEEE.

关键词： Flat panel displays

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A fully integrated, highly linear SiGe BiCMOS class-AB power amplifier targeting 2.4GHz applications

A fully integrated, highly linear SiGe BiCMOS class-AB power...

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Asia Pacific Conference on Postgraduate Research in Microelectronics & Electronics (PrimeAsia)

作者： Zhang, Shulin Su, Jie Chen, Lei Tian, Liang Zhou, Jin Ruan, Ying Liu, Shengfu Zhang, Wei Hua, Lin Ran, Feng Lai, Zongsheng Institute of Microelectronics Circuit and System East China Normal University Shanghai China Key Laboratory of Advanced Display and System Application Shanghai University Shanghai China

ISBN: (纸本)9781424467372

This paper presents a 2.4GHz fully integrated power amplifier based on 0.18μm SiGe BiCMOS technology for wireless local area network applications [1]. The power amplifier shows a 1 dB compression output power of 22.19dBm at an input power of 0.135dBm. A temperature-insensitive bias circuit is used in this PA design to improve the amplifier linearity. The total fabricated die size is about 1.5mm×1.2mm. The designed PA based on SiGe BiCMOS technology demonstrates a competitive linearity performance compared with GaAs, when considering the factors of cost and process complexity.

关键词： Power amplifiers

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ASIC design of UHF RFID reader digital baseband

ASIC design of UHF RFID reader digital baseband

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2nd Asia Pacific Conference on Postgraduate Research in Microelectronics and Electronics, PrimeAsia 2010

作者： Liu, Jing Chen, Yihao Gu, Bin Zhang, Runxi Ran, Feng Lai, Zongsheng IMCS East China Normal University Shanghai 200062 China Key Laboratory of Advanced Display and System Application Shanghai University China

ISBN: (纸本)9781424467372

This paper presents the ASIC design and implementation of digital baseband system for UHF RFID reader based on EPC Global C1G2/ISO 18000-6c protocol. The digital baseband system consists of two parts: transmitter and receiver, which inculing encoding module, decoding module, channel filers, CRC chenk module, control module and a SPI module. It is described in verilog HDL in RTL level, with Design Complier for synthesizing, PT for static timing analyzing and Astro for physical design. The die is fabricated using IBM 130nm 8-layer-metal RF cmos process successfully, which size is 3 mm × 3mm, the power consumption is around 6.7mW. It can be applied in the research of single-chip UHF RFID reader.

关键词： application specific integrated circuits

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A 2.4GHz high efficient monolithic class E power amplifier

A 2.4GHz high efficient monolithic class E power amplifier

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Asia Pacific Conference on Postgraduate Research in Microelectronics & Electronics (PrimeAsia)

作者： Su, Jie Zhang, Shulin Chen, Lei Tian, Liang Zhou, Jin Ruan, Ying Ran, Feng Lai, Zongsheng Institute of Microelectronics Circuit and System East China Normal University Shanghai 20062 China Key Laboratory of Advanced Display and System Application ShangHai University Shanghai 20062 China

ISBN: (纸本)9781424467372

This paper presents a 2.4GHz monolithic Class E power amplifier based on Grace 0.18um SiGe BiCMOS technology. It has a two-stage structure and adopts small DC feed inductors and on-chip matching networks. Without any off-chip components, the power amplifier achieves maximum output power of 22.4dBm. and the PAE is 33% with 2V supply. After optimizing the component parameter, the input and output terminals are both well matched to baseband and antenna respectively. With EER or ET technology this switch-mode amplifier can realize linear amplification, resulting in impressive high efficient in future communication system.

关键词： Power amplifiers

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Unequal decoding power allocation for efficient video transmission

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Journal of Shanghai University(English Edition) 2010年第1期14卷 60-65页

作者：王永芳余松煜杨小康张兆杨 Key Laboratory of Advanced Display and System Application School of Communication and Information Engineering Shanghai University Institute of Image Communication and Information Processing Research Shanghai Jiao Tong University

We present an unequal decoding power allocation （UDPA） approach for minimization of the receiver power consumption subject to a given quality of service （QoS）, by exploiting data partitioning and turbo decoding. We assign unequal decoding power of forward error correction （FEC） to data partitions with different priority by jointly considering the source coding, channel coding and receiver power consumption. The proposed scheme is applied to H.264 video over additive white Gaussion noise （AWGN） channel, and achieves excellent tradeoff between video delivery quality and power consumption, and yields significant power saving compared with the conventional equal decoding power allocation （EDPA） approach in wireless video transmission.

关键词： power allocation turbo code data partition joint source and channel code

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An efficient deblocking filter algorithm in multi-view video coding

An efficient deblocking filter algorithm in multi-view video...

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2010 International Conference on Audio, Language and Image Processing, ICALIP 2010

作者： Fu, Ying Wang, Yongfang Zhang, Zhaoyang School of Communication and Information Engineering Shanghai University Shanghai 200072 China Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai 200072 China

ISBN: (纸本)9781424458653

Image and video coding in block-based image coding can cause blocking artifacts, which severely degrade visual quality in the compressed sequences. Loop deblocking filter method can reduce these artifacts and improve the video objective and subjective quality obviously. In this paper, we propose an efficient deblocking filtering method for multiview video coding, which considers the color bleeding distortion. Experimental results show that this proposed algorithm outperforms the traditional deblocking algorithm in terms of PSNR and subjective visual quality when QP value is relatively high. ©2010 IEEE.

关键词： Bandpass filters

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A new scheme of layered coding of stereoscopic video

A new scheme of layered coding of stereoscopic video

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2010 International Conference on Audio, Language and Image Processing, ICALIP 2010

作者： Liao, Xiaotong Ma, Ran An, Ping Zhang, Zhaoyang School of Communication and Information Engineering Shanghai University Shanghai 200072 China Key Laboratory of Advanced Display and System Application Ministry of Education Shanghai 200072 China

ISBN: (纸本)9781424458653

A new scheme of layered coding of stereoscopic video based on the correlation of motion vector fields (MV fields) is proposed in this paper, in which the bit streams robustness is improved to error channel and the coding efficiency is not reduced evidently. In our proposed scheme, the stereoscopic video is classified into one base layer and two enhancement layers. First, left-view video is encoded as Base Layer to ensure the basic quality of two-dimensional video. Then, the disparity vectors(DVs) of right-view video are encoded as Enhancement Layer *** lower bit rates further and reduce the network load, the strong correlation of the motion vectors(MVs) for two views video sequence are tested. Based on the correlation of MVs between views, the MVs of right-view are transmitted as Enhancement Layer 2 only if the correlation between left and right view is less than some threshold. Experimental results are demonstrated to testify the efficiency of our proposed scheme. ©2010 IEEE.

关键词： Efficiency

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Dynamic color temperature white lighting source based on red green and blue light emitting diode

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Guangxue Xuebao/Acta Optica Sinica 2011年第5期31卷

作者： Yin, Luqiao Yang, Weiqiao Li, Shuzhi Cheng, Bei Zhang, Jianhua School of Mechanical Engineering and Automation Shanghai University Shanghai 200072 China Key Laboratory of Advanced Display and System Applications Shanghai University Shanghai 200072 China Shanghai Research Center of Engineering and Technology for Semiconductor Lighting Shanghai 201203 China

More and more attentions have been focused on the lighting source as it plays an important role to people's health. The light emitting efficiency of light emitting diode has been broken through year by year and now it has been surpassed that of the traditional lighting source. In order to improve the lighting quality by a lighting source with flexible color temperature, a data base is created with different color temperature by mixing different proportion luminous flux of red, green and blue light emitting diode based on theoretical calculations. The data base is embedded into the control program and it can run different proportion to realize light source variation with color temperature at different time. The experimental results show that the lighting source can realize correlated color temperature from 2300-7000 K, real color temperature is in accordance with that of theoretical calculation. Thus a sunlight-style lighting device is realized fundamentally.

关键词： Light emitting diodes

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