LED显示屏色度校正原理与应用

随着逐点校正的技术进步,客户对LED屏的显示质量要求也越来越高,从仅仅追求亮度与白平衡指标,渐渐提升到了对显示均匀度和色保真度的要求。利用逐点校正技术大幅提升显示屏的均匀度,当前正处于快速的普及应用进程中,而色度校正的需求也渐渐浮出水面,越来越为业内所关注。本文将简要介绍LED显示屏色度校正的原理、应用、实现方法与技巧。     

基于PSPICE 9的数字电路元器件故障模型研究

文章提出了使用电路仿真实现电路故障注入与测试的方法，介绍了使用PSPICE 9实现电路故障注入的可行途径，论述了仿真自动故障注入的实现方法，讨论并建立了半导体集成数字器件的故障模式仿真模型．通过电路仿真实例进行了啄理验证。     

Robustness comparison of DG FinFETs with symmetric, asymmetric, tied and independent gate options with circuit co-design for ultra low power subthreshold logic

Double gate FinFETs are shown to be better candidates for subthreshold logic design than equivalent bulk devices. However it is not so clear which configuration of DG FinFETs will be more optimal for subthreshold logic. In this paper, we compare the different device and circuit level performance metrics of DG FinFETs with symmetric, asymmetric, tied and independent gate options for subthreshold logic. We observe that energy delay product (EDP) shows a better subthreshold performance metric than power delay product (PDP) and it is observed that the tied gate symmetric option has ≈78% lower EDP value than that of independent gate option for subthreshold logic. The asymmetry in back gate oxide thickness adds to further reduction in EDP for tied gate and has no significant effect on independent gate option. The robustness (measured in terms of % variation in device/circuit performance metrics for a ±10% variation in design parameters) of DG FinFETs with various options has also been investigated in presence of different design parameter variations such as silicon body thickness, channel length, threshold voltage, supply voltage and temperature, etc. Independent gate option has been seen to be more robust (≈40% less) than that of tied gate option for subthreshold logic. Comparison of logic families for subthreshold regime with DG FinFET options shows that for tied gate option, sub-CMOS, sub-Domino and sub-DCVSL have almost similar and better energy consumption and robustness characteristics with respect to PVT variations than other families.     

使用铜纳米和银纳米的电路形成技术

概述了使用纳米粒子的电路形成技术。     

HAODE基于Android平台的键盘输入技术研究

分析了智能终端技术在矿用平台的可行性,并根据矿业生产的实际需求,提出了引进传统键盘输入技术作为输入系统的补充技术,替代无法在矿业环境使用的触摸屏技术,实现Android系统终端在矿业生产领域的引进,促进了以高速CPU、智能控制技术为代表的先进平台在矿业环境使用,逐步实现矿场设备的更新升级。     

平板CRT的发展趋势

ＣＲＴ器件是当前显示器件中技术最为成熟应用最为普及的主导产品,由于存在着体积大,重量重等固有的严重缺陷。ＣＲＴ器件也一直受到众多新型平板显示器件的严峻挑战,实现ＣＲＴ器件的平板化设计。一直是ＣＲＴ科研工作者不断努力和艰苦工作目标。本文简要叙述了平板ＣＲＴ的发展经历、主要类型及工作原理,并进一步探讨了平板ＣＲＴ的发展前景。     

仿真软件Multisim10在桥式整流滤波电路理论课教学中的应用探讨

针对桥式整流滤波电路理论课教学特点,通过即时仿真手段,创设电路仿真情境,结合递进性情境操作,唤醒学生探究未知的主动性.     

TFT-LCD技术的研究进展与发展趋势

介绍了近年来世界ＴＦＴ ＬＣＤ技术的研究现状,论述了未来ＴＦＴ ＬＣＤ技术的发展趋势     

Unity direct chain with feedback series impedance based innovative negative group delay circuit

An innovative negative group delay (NGD) circuit theory on unity direct chain (UDC) topology is developed in this paper. The NGD UDC cells are based on the operational amplifier adder with feedback series impedance. Innovative topologies of high-pass NGD UDC cell composed of RL-series network, all-pass RC-parallel network and low-pass RC-series network are identified. It is a first time that all-pass NGD original topologies are defined. NGD analyses and synthesis methods of each NGD UDC cells are provided. The UDC cell based NGD functions are validated with SPICE simulations. The proofs-of-concept (POC) of UDCs behave as all-pass and low-pass NGD functions with group delay equal to −1 ms at very low frequencies. The low-pass NGD cut-off frequency is 424 Hz. The high pass NGD circuit generates −1 µs at the optimal NGD frequency of about 5.15 kHz. Further analysis of the operational amplifier gain and bandwidth effects is performed. The operational amplifier gain affects significantly the NGD level and bandwidth for the all considered UDC cells. Nevertheless, only the RC-parallel feedback based UDC cell is particularly sensitive to the operational bandwidth.     

基于PXA270处理器的18象素位深显示驱动设计与实现

基于PXA270处理器和WinCE操作系统,根据显示屏的时序特性,设计实现18 bit/pixel,象素位深)存储模式下的LCD显示驱动.重点介绍了在帧缓冲区中采用18 bit/pixel Packed(Bit Per Pixel_Packed,压缩象素位深)方式存储象素的处理方法,以及LCD控制器、屏接口硬件设计和显示驱动底层流程.实验表明,采用18 bit/pixel Packed的存储方式画质显示更为鲜明,视频文件播放更加流畅,采用BMQ软件测试系统总分达到745分.