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Institution of Engineering and Technology International Communication Conference on Wireless Mobile and Computing

作者： Guan, Ye-Peng Xiong, Hui-Jun Yu, Yun-Jie School of Communication and Information Engineering Shanghai University 149 Yanchang Rd. Shanghai 200072 China Key Laboratory of Advanced Displays and System Application Ministry of Education 149 Yanchang Rd. Shanghai 200072 China

ISBN: (纸本)9781849191388

A novel method is proposed to analyze pointing recognition based on a single un-calibrated camera. Face skin information is explicitly adopted as view quality in selecting the best view from multiple cameras. View measurement has been developed to overcome the effects from camera view directions and the distances between the user and the camera. No explicit constraints are set on the camera placement. Pointing users can move freely inside a wider interaction environment while pointing at some targets. The mentioned model does not constrain whether the pointing surface is flat or not. Experiments have highlighted that the proposed method is efficient and the performance of pointing recognition from the optimal viewpoint camera outperforms other cameras.

关键词： Cameras

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Flexible Active-matrix Micro-LED display Utilizing InSnO TFTs with High Mobility of 39.1 cm2V-1s-1 and Mass-production Compatible Process

Flexible Active-matrix Micro-LED Display Utilizing InSnO TFT...

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2024 IEEE International Electron Devices Meeting, IEDM 2024

作者： Yu, Zuoxu Sang, Yimeng Zhang, Yuzhen Zhang, Yiyang Shi, Runxiao Liu, Siyang Tao, Tao Li, Xifeng Peng, Cong Zhang, Rong Wu, Wangran Zhuang, Zhe Liu, Bin Sun, Weifeng School of Integrated Circuits National ASIC System Engineering Research Center Southeast University Nanjing China Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials School of Electronic Science and Engineering Nanjing University Nanjing China School of Integrated Circuits Nanjing University Suzhou China Key Laboratory of Advanced Display and System Applications of the Ministry of Education Shanghai University Shanghai China

ISBN: (纸本)9798350365429

The increasing pursuit of ultrahigh resolution displays has driven the demand for thin film transistors (TFTs) with higher mobility, especially on flexible substrates. In this work, we developed InSnO (ITO) TFTs on flexible substrates and achieved a remarkable average mobility of 39.1 cm2V-1s-1, via mass-production compatible processes utilizing SiO2 gate dielectric. Benefiting from the ultra-flat surface and extremely low coefficient of thermal expansion (CTE) of our PI substrate, the ITO TFTs exhibit excellent wafer-scale uniformity, reliable mechanical flexibility, and robust bending durability. Based on the ITO TFTs, we fabricated flexible 2T1C pixel circuits that can operate in both PAM and PWM schemes. The flip-chip micro-LEDs (μ-LEDs) were transferred to a flexible PI holder nondestructively with the assistance of UV tape and present superior robustness and endurance under cyclic bending. Moreover, we bonded μ-LEDs to the 2T1C pixel circuits and demonstrated a flexible active-matrix μ-LED display. The feasibility of flexible illumination and image control has been verified, providing great potential for high-resolution flexible displays in the future. © 2024 IEEE.

关键词： Thin film transistors

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Improved Delay Fault Coverage in SoC Using Controllable Multi-Scan-Enable

Improved Delay Fault Coverage in SoC Using Controllable Mult...

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2010 10th IEEE International Conference on Solid-State and Integrated Circuit Technology(第十届固态和集成电路技术国际会议 ICSICT-2010)

作者： Jin-yi ZHANG Xu-hui HUANG Wan-lin CAI Han-yi WENG Key Laboratory of Advanced Displays and system Application Ministry of Education Shanghai Universi Microelectronic Research & Development Center Shanghai University Key aboratory of Advanced Displays and system Application Ministry of Education Shanghai Universit

ISBN: (纸本)9781424457977

This paper presents a method of multi-Scan-Enable DFT design for at-speed scan testing to improve transition fault coverage. Base on the method, we build a novel TR-TC (Test Resources-Test Coverage) associated test cost mathematical model to effectively control the complexity of at-speed DFT design and establish the optimization number of ScanEnable, which provides a reliable target control value in multi-Scan-Enable DFT design for at-speed scan testing. Experiment results for transition fault coverage improvement on three industrial SoC circuits and the upper limit of the number of Scan-Enable are presented.

关键词： sweep test scanning fault latency controlling value fault coverage discrete Fourier transform Coverage test coverage Mathematical Model

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Multiple factors influencing high-purity indium electrolytic refining

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Chinese Journal of Chemical Engineering 2024年第7期71卷 148-160页

作者： Hong-Qiang Fan Fei Li Hong-Xing Zheng Wu-ji Pan Mei-Zhen Wu Yashar Behnamian Ju-Bo Peng Dong-Hai Lin State Key Laboratory of Advanced Special Steel&School of Materials Science and Engineering Shanghai UniversityShanghai 200444China Shanghai Engineering Research Center for Integrated Circuits and Advanced Display Materials Shanghai UniversityShanghai 200444China Research&Development Center Yunnan Tin Group(Holding)Limited CompanyKunming 650032China Department of Chemical and Materials Engineering University of AlbertaEdmonton T6G 2V4AlbertaCanada School of Energy and Materials Shanghai Key Laboratory of Engineering Materials Application and EvaluationShanghai Polytechnic UniversityShanghai 201209China

The effects of various contaminants in the electrolytic refinement of indium were investigated using a glow discharge mass spectrometer(GDMS).The effects of several factors such as the indium ion(In3+)concentration,the sodium chloride(NaCl)concentration,the current density,the gelatin concentration,the pH,and the electrode distance,were *** variations in impurity levels concerning gelatin concentration were *** the gelatin and In3+concentration were moderately positively correlated with the Pb *** Sb concentration was associated positively with the NaCl concentration,while the Ti concentration had an adverse correlation with the NaCl *** Bi element content was positively linked to the electrode *** the current density increased,Cu,Pb,and Bi impurities initially rose and then eventually ***,a critical current density of 45 A·m^(-2) was identified in this behavior.

关键词： High-purity indium Electrolysis Multiple factors Electrochemistry Purification

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CQD-LEDs with High Colour Rendering Index

CQD-LEDs with High Colour Rendering Index

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17th China International Forum on Solid State Lighting &2020 International Forum on Wide Bandgap Semiconductors (第十七届中国国际半导体照明论坛暨2020国际第三代半导体论坛)

作者： Yuxian Yan Doudou Zhang Luqiao Yin Jianhua Zhang School of Materials Science and Engineering Shanghai UniversityShanghai 200072China Key Laboratory Key Laboratory of Advanced Display and System Applications Shanghai UniversityMinistry of Education Key Laboratory of Advanced Display and System Applications Shanghai UniversityMinistry of Education

ISBN: (数字)9780738111889

ISBN: (纸本)9781665419642

Quantum dots(QD),which is considered the ideal candidate of third generation semiconductor lighting,has the advantages of high quantum yield,adjustable emission wavelength and narrow full width at half maxima(FWHM),thus it is an ideal choice as the colour converting materials for *** LEDs are the main choice of solid-state lighting,which is always applied with Ce-doped yttrium aluminum garnet(YAG: Ce3+)yellow phosphor to achieve white ***,white light achieved by this method has a low colour rendering index(CRI),mainly because of the missing of red spectral components in YAG: Ce3+,thus the CRI is lower than 80 and the correlated colour temperature(CCT)is always above *** order to increase the CRI of white LEDs,in this paper,we fabricated yellow CQDs and applied it on blue LED chips,red QD films were also used to increase the CRI of our white *** result shows that the white LEDs with yellow CQDs and red QD films has a max CRI of 94.3 at a driving current of 70mA,the Commission International de L'Eclairage(CIE)chromaticity coordinates are(0.325,0.3435),and the CCT is 5832K,which is white light with high CRI and can be used in indoor lighting.

关键词： Light emitting diodes Films Color Absorption Phosphors Fluorescence Quantum dots

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Design of intelligent temperature control driving circuit for high power LED array

Design of intelligent temperature control driving circuit fo...

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16th China International Forum on Solid State Lighting & 2019 International Forum on Wide Bandgap Semiconductors (第十六届中国国际半导体照明论坛暨2019国际第三代半导体论坛)

作者： Fei Wang Houda Zhou Jingjing Liu Luqiao Yin Jianhua Zhang Key Laboratory of Advanced Display and System Applications Shanghai UniversityMinistry of Education Shanghai Electric Power University Shanghai200090China Key Laboratory of Advanced Display and System Applications Shanghai UniversityMinistry of Education

ISBN: (数字)9781728157566

ISBN: (纸本)9781728157573

A new type of high-power underwater lighting LED driver circuit is *** design studies and designs the electrical performance stability,temperature regulation and LED array arrangement of LED array *** temperature control mainly uses the temperature sensor module for detection,and the temperature feedback is timely performed by the *** the temperature reaches the set temperature gradient threshold,the PWM is adjusted in time to adjust the current to achieve the brightness *** purpose of heat generation is to adjust the temperature;the other point is mainly to design the voltage regulator circuit *** stability of the circuit is very important for the LED array circuit and the peripheral circuit in this design,which also becomes the judgment *** of the key *** paper mainly designs the circuit stability for input voltage regulation and temperature control *** illumination flux will also have certain requirements,LED array arrangement is also very *** the simulation experiment,the hexagonal array arrangement is *** the above three points,a high-power LED driver circuit is ***,through the specific experiment to verify the operation of the circuit,the overall operation of the circuit is good,the dimming,voltage regulation is good and the efficiency is high,and the design goal is achieved.

关键词： LED array voltage regulation temperature regulation efficiency

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A dynamic interactive pooling based human-computer interaction

International Journal of Multimedia and Ubiquitous Engineeri...

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International Journal of Multimedia and Ubiquitous Engineering 2015年第8期10卷 125-138页

作者： Li, Yulong Guan, Yepeng Ma, Jinfeng School of Communication and Information Engineering Shanghai University China Key Laboratory of Advanced Displays and System Application Ministry of Education China

Human-computer interaction (HCI) has great potential for applications in many fields. A HCI method has been developed based on audio-visual perceptive features and dynamic interactive pooling. A mode analysis based fusion strategy is proposed to fuse the interactive responses from audio-visual modalities especially for the case there are deviations from the modalities at the same time. The developed approach can be applied with a better performance even in single modal with multiple interactive users in the scenario. The users in the scenario are endowed with a fair chance to perform HCI by their interactive priorities no matter how many modalities used, and the interactive authority and priority are updated dynamically according to the variation of HCI content. The scenario and multiple users altogether are regarded as a dynamic HCI pooling. The diversity of interactive habits among multiple users is considered in an ordinary hardware from a crowded scene without any hypothesis for the scenario contents in advance. The pooling is updated dynamically to meet the user demands with the most intentions preferentially. Comparative study with state-of-the-arts has indicated the superior performance of the proposed method. © 2015 SERSC.

关键词： Human computer interaction

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Design and implementation of FPD system based on the fractal scanning IP core

Design and implementation of FPD system based on the fractal...

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作者： Xu, Meihua Ran, Feng Chen, Zhangjin Zhang, Qing Key Laboratory of Advanced Displays and System Application Ministry of Education Shanghai University China School of Mechanical Engineering and Automation Shanghai University Campus 149 Yanchang Rd. Shanghai 200072 China

ISBN: (纸本)9787561752289

This paper presents the design and implementation of FPD system based on the fractal scanning IP core. The system is made up of the multimedia video card, the Ethernet video transmitter unit, the fractal scanning controller and the LED flat panel display. Using the fast Ethernet agreement technique to substitute the traditional difference data transfer method obtained the advantages such as fast speed, long distance data transmission and the high reliability of transceiving data. The novel control mode that the fractal scanning IP core described with Verilog language is embedded in the FPGA hardware frame can efficiently increase the imaging gray scales, and speed up frame frequency of display system. Serial applications and tests indicate that there is no need to using high-speed IC circuits to realize the high articulation and resolution display of video image with the proposed method.

关键词： Scanning

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IC design for OLED scan driver with dual radix clock and acyustable grey scale

IC design for OLED scan driver with dual radix clock and acy...

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作者： Feng, Ran Xu, Mei-Hua Chen, Zhang-Jin Key Laboratory of Advanced Displays and System Application Ministry of Education Shanghai University China School of Mechanical Engineering and Automation Shanghai University Campus 149 Yanchang Rd. Shanghai 200072 China

ISBN: (纸本)9787561752289

The paper first argues the system level design of the OLED drive chip. After analyzing the the feature of OLED and the display pane[1] , it presents the process to eliminate the cross talk effect by the precharge circuit, and compares the drive efficiency between two precharge schemes, then proposes the dual radix interleaving clock architecture to enhance the lighting efficiency and dynamic feature of the OLED display panel. The circuit is realized by the Dual State Machine Locks. At last it demonstrates the effect on the efficiency of both display and transmission among three RAM management architecture, which is to enable the OLED drive chip to be adapt to different gray scales.

关键词： Locks (fasteners)

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Methodology research & ASIC design for OLED-on-silicon pixel circuit

Methodology research & ASIC design for OLED-on-silicon pixel...

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作者： Feng, Ran Zhou, Jie Xu, Mei-Hua Wu, Ming Key Laboratory of Advanced Displays and System Application Ministry of Education Shanghai University China School of Mechanical Engineering and Automation Shanghai University Campus 149 Yanchang Rd. Shanghai 200072 China

ISBN: (纸本)9787561752289

This paper proposes a time grayscale control method associated with source current mirror using binary latch scheme to take place conventional structure which uses capacitance with MOSFET. The time grayscale control method based on the characteristics that the Luminance can "stay for a while" in human eyes controls the time period of pixel work to make different gray scales, and it solves the division limitation of magnitude control. The data we used has 2 states, high or low, just make the OLED on or off. In the pixel select period, the data is locked in the binary latch, and during the unselect period, the data in the latch will still make the OLED work as the situation just in the select period. Here we use high impedance , high precise constant current source mirror structure to drive the OLED, which can solve the problems including delay of the capacitance and nonuniform over display in the drive circuit of AM-OLED in existence.

关键词： Capacitance

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