期刊文献+
共找到41篇文章
< 1 2 3 >
每页显示 20 50 100
Integration and verification case of IP-core based system on chip design 认领 引用 被引量:3
1
作者 胡越黎 周谌 《Journal of Shanghai University(English Edition)》 2010年第5期349-353,共5页
In this paper, the design and verification process of an automobile-engine-fan control system on chip (SoC) are introduced. The SoC system, SHU-MV08, reuses four new intellectual property (IP) cores and the design... In this paper, the design and verification process of an automobile-engine-fan control system on chip (SoC) are introduced. The SoC system, SHU-MV08, reuses four new intellectual property (IP) cores and the design flow is accomplished with 0.35 btm chartered CMOS technology. Some special functions of IP cores, the detailed integration scheme of four IP cores, and the verification method of the entire SoC are presented. To settle the verification problems brought by analog IP cores, NanoSim based chip-level mixed-signal verification method is introduced. The verification time is greatly reduced and the first tape-out achieves success which proves the validity of our design. 展开更多
关键词 system on chip (SoC) intellectual property (IP)-core integration verification pulse width modulation (PWM)- analog digital converter (ADC) linkage running
暂未订购 下载PDF
Systematic studies on scan and driving model for flat panel display 认领 引用
2
作者 徐美华 冉峰 +1 位作者 陈章进 翁世浩 《Journal of Shanghai University(English Edition)》 2011年第4期279-286,共8页
Aiming at the time redundancy in the fiat panel display (FPD) imaging process, the paper studied some problems for FPD gray scale controlling based on the fraetal theory, dissertates the construction of the space-ti... Aiming at the time redundancy in the fiat panel display (FPD) imaging process, the paper studied some problems for FPD gray scale controlling based on the fraetal theory, dissertates the construction of the space-time mapping topology architecture, the proposition of optimal scanning structure for FPD's gray imaging, and the creation of the fractal theoretic model. Then the logic implementation and system application are presented based on the fraetal model of the optimal scan architecture, and the application results achieved target of eliminating time redundancy and increasing the scanning availability. The novel control mode that the fractal scanning IP core described with Verilog language embedded in the FPGA hardware frame can efficiently increase the imaging gray scales and quality in the FPDs scanning controller and speed up the frame frequency of display system. 展开更多
关键词 fiat panel display (FPD) space-time mapping optimal scan architecture fractal model logic implementation IP core
暂未订购 下载PDF
Early stage of explosive expansion in extreme ultraviolet source vessel 认领 引用
3
作者 Qihang Ma Kai Leong Chong +2 位作者 Bofu Wang Jianhua Zhang Quan Zhou 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2026年第5期1-10,共10页
In an extreme ultraviolet(EUV)vessel,intense heating occurs when a high-power laser irradiates tin droplets,generating extreme thermal pressure gradients that drive complex flow dynamics.This review focuses on two cri... In an extreme ultraviolet(EUV)vessel,intense heating occurs when a high-power laser irradiates tin droplets,generating extreme thermal pressure gradients that drive complex flow dynamics.This review focuses on two critical aspects governing flow properties and debris transport within the vessel:main shock behavior and thermal expansion dynamics.Key considerations include finite-source shock dynamics,environmental effects on shock propagation,gas contact motion,and interface instabilities.The evolution of the main shock and gas contact is primarily determined by the initial pressure ratio and sound speed ratio between the heat source and ambient gas.Furthermore,Rayleigh-Taylor and Richtmyer-Meshkov instabilities dominate the evolution of gas-gas interfaces.This work presents a comprehensive analysis of the complex flow mechanisms underlying early-stage,high-temperature flow expansion in EUV source vessels. 展开更多
关键词 Extreme ultraviolet lithography Extreme high thermal pressure Main shock Gas contact
暂未订购 下载PDF
High-performance n-channel organic thin-film transistors based on the dual effects of heterojunction and surface modification 认领 引用 被引量:1
4
作者 曹进 洪飞 +6 位作者 邢菲菲 顾文 郭新安 张浩 魏斌 张建华 王军 《Chinese Physics B》 SCIE EI CAS 2010年第3期456-461,共6页
This paper presents two n-channel organic heterojunction transistors with modified insulator by using hexadecafiuorophthalocyaninatocopper (F16CuPc)/copper phthalocyanine (CuPc) and F16CuPc/pentacene as the active... This paper presents two n-channel organic heterojunction transistors with modified insulator by using hexadecafiuorophthalocyaninatocopper (F16CuPc)/copper phthalocyanine (CuPc) and F16CuPc/pentacene as the active layers. Compared with a single-layer device, it reports that an improved field-effect mobility and a 6-fold higher drain current are observed. The highest mobility of 0.081 cm^2/(V. s) was obtained from F16CuPc/CuPc heterojunction devices. This result is attributed to the dual effects of the organic heterojunction and interface modification. Furthermore, for two heterojunction devices, the performance of the F16CuPc/CuPc-based transistor is better than that of F16CuPc/pentacene. This is attributed to the morphologic match of two organic components. 展开更多
关键词 n-channel heterojunction effect surface modification
暂未订购 下载PDF
Dependence of electrical and optical properties of IGZO films on oxygen flow 认领 引用 被引量:1
5
作者 石继锋 陈龙龙 +2 位作者 李倩 李喜峰 张建华 《Journal of Shanghai University(English Edition)》 2011年第4期242-244,共3页
Amorphous InGaZnO (a-IGZO) films were deposited on the corning eagle XG (EXG) glass substrates using magnetron sputtering method. The structure, surface morphology, electrical and optical properties of these films... Amorphous InGaZnO (a-IGZO) films were deposited on the corning eagle XG (EXG) glass substrates using magnetron sputtering method. The structure, surface morphology, electrical and optical properties of these films were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), semiconductor parameter analyzer and 'spectrophotometry, respectively. The influence of oxygen flow on the electrical properties of IGZO thin films was studied, showing that increasing oxygen flow changes the resistivity with six orders of magnitude. The contact resistance of ITO/IGZO is 7.35×10^-2 Ω-cm2, which suggests that a good ohmic contact exists between In2O3 : Sn (ITO) and IGZO film. 展开更多
关键词 InGaZnO (IGZO) sputtering contact resistance
暂未订购 下载PDF
Technical analysis of 3DTV and outstanding issues 认领 引用
6
作者 张兆杨 程浩 +1 位作者 沈礼权 杨高波 《Journal of Shanghai University(English Edition)》 2011年第4期316-320,共5页
This paper analyzes the technical characteristic of three-dimensional display technology (3DTV) system and some core technologies yet to be solved. It points out the ways to solve these problems and presents an effe... This paper analyzes the technical characteristic of three-dimensional display technology (3DTV) system and some core technologies yet to be solved. It points out the ways to solve these problems and presents an effective solution for thediscomfort of watching the three-dimensional TV. 展开更多
关键词 three-dimensional (3D) display multi-view/depth coding inter-view rendering discomfort of watching threedimensional display technology (3DTV)
暂未订购 下载PDF
Area-time associated test cost model for SoC and lower bound of test time 认领 引用
7
作者 张金艺 翁寒一 +1 位作者 黄徐辉 蔡万林 《Journal of Shanghai University(English Edition)》 2011年第1期43-48,共6页
A novel test access mechanism (TAM) architecture with multi test-channel (TC) based on IEEE Standard 1500 is proposed instead of the traditional sub-TAM structure. The cost model of an area-time associated test an... A novel test access mechanism (TAM) architecture with multi test-channel (TC) based on IEEE Standard 1500 is proposed instead of the traditional sub-TAM structure. The cost model of an area-time associated test and the corresponding lower bound of system-on-chip (SoC) test time are established based on this TAM architecture. The model provides a more reliable method to control the SoC scheduling and reduces the complexity in related algorithm research. The result based on the area time associated test cost model has been validated using the ITC02 test benchmark. 展开更多
关键词 system-on-chip design for testability (SoC DriP) test cost test time lower bound
暂未订购 下载PDF
High-brightness blue organic light emitting diodes with different types of guest-host systems 认领 引用
8
作者 王肖 张敬爽 +3 位作者 彭翠云 郭坤平 魏斌 张浩 《Optoelectronics Letters》 EI 2016年第2期89-92,共4页
We demonstrate high-brightness blue organic light emitting diodes(OLEDs) using two types of guest-host systems. A series of blue OLEDs were fabricated using three organic emitters of dibenz anthracene(perylene), di(4-... We demonstrate high-brightness blue organic light emitting diodes(OLEDs) using two types of guest-host systems. A series of blue OLEDs were fabricated using three organic emitters of dibenz anthracene(perylene), di(4-fluorophenyl) amino-di(styryl) biphenyl(DSB) and 4,4'-bis[2-(9-ethyl-3-carbazolyl)vinyl]biphenyl(BCzV Bi) doped into two hosting materials of 4,4'-bis(9-carbazolyl) biphenyl(CBP) and 2-(4-biphenylyl)-5(4-tert-butyl-phenyl)-1,3,4-oxadiazole(PBD) as blue emitting layers, respectively. We achieve three kinds of devices with colors of deep-blue, pure-blue and sky-blue with the Commission Internationale de L'Eclairage(CIE) coordinates of(0.16, 0.10),(0.15, 0.15) and(0.17, 0.24), respectively, by employing PBD as host material. In addition, we present a microcavity device using the PBD guest-host system and achieve high-purity blue devices with narrowed spectrum. 展开更多
关键词 guest biphenyl brightness coordinates colors normalized Internationale vinyl butyl biochemistry
暂未订购 下载PDF
Power test method for LED backlight LCD TVs and software development 认领 引用
9
作者 刘臻 张建华 《Journal of Shanghai University(English Edition)》 2011年第4期267-271,共5页
As the appearance of local dimming technique, the current existing test methods are not suitable for testing the power consumption of the LCD TVs using the local dimming technique any longer. A test method appropriate... As the appearance of local dimming technique, the current existing test methods are not suitable for testing the power consumption of the LCD TVs using the local dimming technique any longer. A test method appropriate to LED backlight LCD TVs using the local dimming technique is proposed in this paper, and then the test software is developed. The results demonstrate that the test software developed can show the real average power consumption of the LCD using local dimming technique, and by normalization the power consumption become comparable for not only local dimming LCD TVs but global dimming LCD TVs. Using the software developed in this paper, the ratio of power saving is clear when an LCD TV using the local dimming technique compared with one without local dimming technique. 展开更多
关键词 local dimming global dimming power consumption test comparison
暂未订购 下载PDF
Smart tri-mode imaging material for on-demand visual encryption and dynamic displays 认领 引用
10
作者 Xue Yang Yucheng Li +12 位作者 Yibo Hu Meng Gu Yanshuo Han Guibin Zhai Jingkun Chen Naixin Li Sihan Yang Kuan Ren Jingtai Zhao Jianguo Chen Yan Zhao Xuyong Yang Qianli Li 《Inorganic Chemistry Frontiers》 SCIE EI CAS CSCD 2026年第2期420-431,共12页
This study demonstrates the synergistic integration of X-ray-induced radioluminescence(RL),persistent luminescence(PersL)and radio-photoluminescence(RPL)in a single material system,which provides innovative multimodal... This study demonstrates the synergistic integration of X-ray-induced radioluminescence(RL),persistent luminescence(PersL)and radio-photoluminescence(RPL)in a single material system,which provides innovative multimodal applications for radiometric information sensing,storage and reading,anti-counterfeiting and imaging.A novel radiation-sensing material,BaMgP2O7:Sm,was prepared using a high temperature solid state method.Under X-ray irradiation,the pale pink phosphor shows distinct luminescence from defects.Under 365 nm ultraviolet(UV)light(bright-field),it emits bright red light,confirming trivalent samarium(Sm3+)reduction to divalent samarium(Sm2+).In dark-field,orange fluorescence appears,indicating defect-mediated charge storage and slow release.Notably,the material enables single-irradiation multiple imaging,effectively overcoming the limitation of conventional materials that only allow single imaging per irradiation event,thereby greatly enhancing information utilization and imaging flexibility.Moreover,the flexible film based on polydimethylsiloxane(BaMgP2O7:Sm@PDMS)demonstrates remarkable tri-mode X-ray detection and imaging capabilities,it has a high spatial resolution of 14.4 lp mm−1,integrating real-time readout,delayed readout,and long-term information storage.BaMgP2O7:Sm enables dynamic anti-counterfeiting via time-dependent luminescence and precise radiation dose monitoring through X-ray responsive emission,these features make it a promising multifunctional material. 展开更多
关键词 synergistic integration multimodal applications radio photoluminescence high temperature solid state methodunder persistent luminescence smart tri mode imaging material pale pink phosphor radiometric information sensingstorage
Effects of ultrasonic bonding parameters on reliability of flip chip GaN-based light emitting diode 认领 引用 被引量:2
11
作者 杨连乔 袁方 张建华 《Journal of Shanghai University(English Edition)》 2011年第4期262-266,共5页
This work applied the ultrasonic bonding to package flip chip GaN-based light emitting diodes (flip chip LEDs) on Si substrates. The effects of ultrasonic bonding parameters on the reliability of flip chip GaN-based... This work applied the ultrasonic bonding to package flip chip GaN-based light emitting diodes (flip chip LEDs) on Si substrates. The effects of ultrasonic bonding parameters on the reliability of flip chip GaN-based LED were investigated. In the sequent aging tests, samples were driven with a constant current of 80 mA for hundreds hours at the room temperature. It was found that the electroluminescence (EL) intensity variation had a large correlation to the ultrasonic power, and then to the bonding temperature and force. A high bonding temperature and ultrasonic power and a proper bonding force improved the EL intensity significantly. It was contributed to a strong atom inter-diffusion forming a stable joint at the bonding interface, The temperature fluctuation in the aging test was the main factor to generate a high inner stress forming delamination at the interface between the chip and Au bump. As a result, delamination had retarded the photons to emit out of the LED packaging and decay its EL intensity. 展开更多
关键词 light emitting diode (LED) flip chip LED electroluminescence (EL) intensity ultrasonic bonding delamination
暂未订购 下载PDF
Robust video foreground segmentation and face recognition 认领 引用 被引量:7
12
作者 管业鹏 《Journal of Shanghai University(English Edition)》 2009年第4期311-315,共5页
Face recognition provides a natural visual interface for human computer interaction (HCI) applications. The process of face recognition, however, is inhibited by variations in the appearance of face images caused by... Face recognition provides a natural visual interface for human computer interaction (HCI) applications. The process of face recognition, however, is inhibited by variations in the appearance of face images caused by changes in lighting, expression, viewpoint, aging and introduction of occlusion. Although various algorithms have been presented for face recognition, face recognition is still a very challenging topic. A novel approach of real time face recognition for HCI is proposed in the paper. In view of the limits of the popular approaches to foreground segmentation, wavelet multi-scale transform based background subtraction is developed to extract foreground objects. The optimal selection of the threshold is automatically determined, which does not require any complex supervised training or manual experimental calibration. A robust real time face recognition algorithm is presented, which combines the projection matrixes without iteration and kernel Fisher discriminant analysis (KFDA) to overcome some difficulties existing in the real face recognition. Superior performance of the proposed algorithm is demonstrated by comparing with other algorithms through experiments. The proposed algorithm can also be applied to the video image sequences of natural HCI. 展开更多
关键词 face recognition human computer interaction (HCI) foreground segmentation face detection threshold
暂未订购 下载PDF
Characteristics of bottom gate a-Si TFT array for AM-OLEDs 认领 引用
13
作者 张浩 陈龙龙 +4 位作者 石继锋 李春亚 路林 李喜峰 张建华 《Journal of Shanghai University(English Edition)》 2011年第4期239-241,共3页
The authors have fabricated bottom gate amorphous silicon thin film transistor (a-Si TFT) array using five-step lithography process. The device shows a field effect mobility of 0.43 cm2/(V.s), on/off ratio of 7.5&... The authors have fabricated bottom gate amorphous silicon thin film transistor (a-Si TFT) array using five-step lithography process. The device shows a field effect mobility of 0.43 cm2/(V.s), on/off ratio of 7.5×10^6 and threshold voltage of 0.87 V. The instability of a-Si TFT is ascribed to the defect state in the a-Si channel and SiNx/a-Si interface. The present a-Si TFT array with SiNs insulator could be a significant step towards the commercialization of active matrix organic lighting diode (AM-OLED) technology. 展开更多
关键词 morphous silicon (aoSi) transistor array stability
暂未订购 下载PDF
Non-reference virtual view quality evaluation of MVD 认领 引用
14
作者 张艳 安平 +2 位作者 张秋闻 王元庆 张兆杨 《Journal of Shanghai University(English Edition)》 2011年第4期342-346,共5页
The quality of virtual view based on multi-view video (MVD) plus depth format is often evaluated by PSNR or subjectively judged. However, due to synthesizing arbitrary view images, the virtual view images mostly hav... The quality of virtual view based on multi-view video (MVD) plus depth format is often evaluated by PSNR or subjectively judged. However, due to synthesizing arbitrary view images, the virtual view images mostly have no reference images and are only assessed using non-reference. Virtual view images synthesized by depth estimation reference software (DERS) and view synthesis reference software (VSRS) often accompanied with blockiness and other distortions on the edge. In addition, matching level for the depth map and the corresponding texture maps of left and right views also affects the quality of the virtual view. This paper compares the edge similarity of the depth and the corresponding texture maps which generate the intermediate virtual view and combined with the virtual view's blockiness which causing blur to evaluate the quality of the virtual view. Experiment results show that the proposed method can reflect the quality of the virtual view better. 展开更多
关键词 non-reference quality evaluation virtual view multi-view video (MVD) plus depth free viewpoint television (FTV)
暂未订购 下载PDF
High efficient and high color rendering index white organic light-emitting diodes 认领 引用
15
作者 张民艳 尚玉柱 +3 位作者 徐红 吕燕芳 于建宁 魏斌 《Journal of Shanghai University(English Edition)》 2011年第4期252-255,共4页
We have fabricated high-efficient white organic light-emitting diodes (WOLEDs) using two types of electron transport materials with different electron mobility. The effect of the electron mobility on the device perf... We have fabricated high-efficient white organic light-emitting diodes (WOLEDs) using two types of electron transport materials with different electron mobility. The effect of the electron mobility on the device performance is discussed. In addition, to generate the desired white emission and high color rendering index, we perform the structure design of OLED, in which the functions of co-host of blue and green dopants on chromatic-stability are investigated. Experimental results find that the maximum color rendering index reaches as high as 91 at the voltage of 8 V. 展开更多
关键词 white organic light emitting diodes (WOLEDs) charge balance energy transfer color rendering index
暂未订购 下载PDF
Effect of annealing on wet etch of amorphous IGZO thin film 认领 引用
16
作者 陈龙龙 石继锋 +2 位作者 李倩 李喜峰 张建华 《Journal of Shanghai University(English Edition)》 2011年第4期245-247,共3页
Amorphous InGaZnO (a-IGZO) film is deposited on the glass substrate by radio-frequency sputtering and the influence of annealing on wet etch of a-IGZO films were investigated. The results show that etch rate of IGZO... Amorphous InGaZnO (a-IGZO) film is deposited on the glass substrate by radio-frequency sputtering and the influence of annealing on wet etch of a-IGZO films were investigated. The results show that etch rate of IGZO films decrease with the increase of annealing temperature. Etching taper angle is less than 60° and critical dimension (CD) loss is less than 1μm in over-etching time of 30 s. The fact implies that IGZO films etching with oxalic acid may be a good wet etching way for the thin-film transistor (TFT) array process. 展开更多
关键词 amorphous InGaZnO (a-IGZO) annealing etching
暂未订购 下载PDF
3DV quality model based depth maps for view synthesis in FTV system 认领 引用
17
作者 张秋闻 安平 +2 位作者 张艳 张兆杨 王元庆 《Journal of Shanghai University(English Edition)》 2011年第4期335-341,共7页
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 ... 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. 展开更多
关键词 free-viewpoint television (FTV) 3D video quality model base depth maps (D-3DV) view synthesis
暂未订购 下载PDF
Numerical investigation on thermal properties of micro-pin-fin cooler 认领 引用
18
作者 张燕 刘扬名 +1 位作者 樊靖郁 刘建影 《Journal of Shanghai University(English Edition)》 2011年第4期272-278,共7页
Micro-pin-fin cooler mounted on the power chip enables the heat removal to meet modern microsystem requirement. Carbon nanotubes (CNTs) have been proven as a potential material for micro-coolers due to the superior ... Micro-pin-fin cooler mounted on the power chip enables the heat removal to meet modern microsystem requirement. Carbon nanotubes (CNTs) have been proven as a potential material for micro-coolers due to the superior thermal conductivity, good mechanical property and so forth, and there appear various applications of CNTs in the micro-cooler technology. In the present paper, an analysis of the thermal and hydraulic characteristics of the micro-pin-fin heat sink was conducted, where air was used as the cooling medium and an impinging jet was introduced to enhance the heat transfer. Three-dimension computational fluid dynamics (CFD) simulations were carried out for micro-pin-fin coolers with various parameters, including the pin-fin size and pattern as well as the jet velocity and nozzle diameter. The flow field and thermal properties of the. micro-pin-fin heat sink were obtained, and the heat removal efficiency was evaluated. 展开更多
关键词 computational fluid dynamics (CFD) micro-cooler pin-fin heat transfer
暂未订购 下载PDF
Exciplex formation and properties at organic solid interface in organic light emitting devices 认领 引用
19
作者 朱文清 蒋雪茵 张志林 《Journal of Shanghai University(English Edition)》 2006年第2期156-160,共5页
The bilayer organic light emitting devices (OLEDs) using two common aromatic diamines as hole transporting materials (HTMs) and BBOT (2,5-bis(5-tert-butyl-2-benzoxazolyl)thiophene) as electron transporting mat... The bilayer organic light emitting devices (OLEDs) using two common aromatic diamines as hole transporting materials (HTMs) and BBOT (2,5-bis(5-tert-butyl-2-benzoxazolyl)thiophene) as electron transporting material have been prepared, in which the electroluminescent spectra are different from the fluorescent spectra of each of the constituent materials. The electroluminescence is mainly attributed to exciplex confirmed by photoluminescence and electroluminescence measurements, and the type of exicplex is deternfined in terms of the energy level diagram of the bilayer devices, By comparing the molecular structures and energy levels of TPD and NPB, it is demonstrated that the structure of a molecule as well as its energy level has an effect on the exciplex formation. 展开更多
关键词 organic electroluminescence photoluminescence exciplex color tuning molecular structure
暂未订购 下载PDF
Optimal strategy of searching FPD weights scanning matrix using GA-PSO 认领 引用
20
作者 严利民 顾裕灿 李建东 《Journal of Shanghai University(English Edition)》 2011年第4期292-296,共5页
This paper discusses a kind of optimal method used for searching flat panel display (FPD) scanning matrix. The method adopts bionic algorithm: genetic algorithm (GA) and particle swarm optimization (PSO) algori... This paper discusses a kind of optimal method used for searching flat panel display (FPD) scanning matrix. The method adopts bionic algorithm: genetic algorithm (GA) and particle swarm optimization (PSO) algorithm. The method using single GA is more time-consuming, and the search efficiency is low in later evolution; the PSO algorithm is easily falling into the local optimal solution and appears the premature convergent phenomenon. Hence, a hybrid approach of GAPSO is found to optimize the search for high grayscale weights scanning matrix. Finally in the acceptable time, it finds a weight scanning matrix (WSM) of 256 gray scales with Matlab, whose scanning efficiency reaches 94.73% and the linearity is very good. 展开更多
关键词 fiat panel display (FPD) weights scanning matrix (WSM) genetic algorithm (GA) particle swarm optimization (PSO) algorithm
暂未订购 下载PDF
上一页 1 2 3 下一页 到第
在线咨询 使用帮助 返回顶部 意见反馈