共查询到19条相似文献,搜索用时 62 毫秒
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利用液晶弹性理论和动力学理论对共面转换液晶显示器件响应时间参数进行了分析,将聚合物网络引入这种模式,利用聚合物网络对液晶的锚定作用,使得IPS液晶显示器件的下降响应时间得到极大改善。实验结果表明,聚合物的百分比含量对哗啦的响应时间、阈值电压、对比度有较大影响。 相似文献
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本文介绍一年多来液晶显示板取得的新进展。具体介绍液晶新材料 SFM(超氟液晶材料)的优越性能、CTM(电荷转移材料)的作用、新结构 LCD 板——PDCLC 板、新部件——偏振滤色器、新选址技术——等离子选址技术以及制造透明电极和滤色器的新工艺。 相似文献
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Videotex is an interactive information system which provides a variety of services to its users. Examples of such services are information retrieval, software distribution, transaction processing, and message handling. An important aspect of the quality of service experienced by a videotex user is the response time. We consider the use of mixed individual/broadcast delivery to enhance the response time performance. Broadcast delivery is attractive for information retrieval applications where several users may be requesting the same information page, and a single broadcast of this page will satisfy all requests simultaneously. Individual response, however, is required for transaction-oriented services and for the retrieval of confidential information. A queueing model is developed to study the performance of videotex systems under mixed delivery. Analytic results are derived for the mean response time. Numerical examples are presented to show the performance characteristics of mixed delivery, and how it can be used to enhance the response time performance without increasing the processing capacity of the system. 相似文献
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全息干板的时间响应特性 总被引:1,自引:0,他引:1
全息干板的感光过程涉及到银原子和光电子的动力学过程,这些动力学特性决定了全息干板对不同曝光时间尺度具有不同的感光效率。介绍了用随机过程方法建立的全息干板时间响应理论模型,用该模型分析了SlavichVRP-M型全息干板的时间响应特性并进行了数值模拟。设计了三套不同的曝光实验装置用于时间响应特性的研究,给出了8个时间点的实验数据,在曝光量不变的情况下,曝光时间范围为0.5 ns~10 s。实验结果与理论结果比较吻合,表明全息干板在曝光过程中存在低照度和高照度互易律失效。最后简要分析了互易律失效对全息照相的影响。 相似文献
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该文简述了光电传感器的基本工作原理、液晶显示器响应时间的基本概念,主要介绍了标准光源的选取,以及测量光电传感器响应时间的方法。 相似文献
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Sinanoglu O. Almukhaizim S. 《Very Large Scale Integration (VLSI) Systems, IEEE Transactions on》2009,17(10):1392-1404
While response compaction reduces the size of expected vectors that need to be stored on tester memory, the consequent information loss inevitably reflects into loss in test quality. Unknown x's further exacerbate the quality loss problem, as they mask out errors captured in other scan cells in the presence of response compactors. In this paper, we propose a technique that manipulates the x distribution in scan responses prior to their propagation into the response compactor. A block, which we refer to as x-align, inserted between the scan chains and the response compactor aligns response x's within the same slices as much as possible in order to increase the number of scan cells that can be observed through the compactor. The alignment of x's is achieved by delaying the scan-out operations in the scan chains, wherein the proper delay values are computed judiciously. We present an Integer Linear Programming (ILP) formulation and a computationally efficient greedy heuristic for the computation of the delay values for scan chains. The x-align hardware is generic yet reconfigurable. An analysis of x distribution in a captured response helps compute the proper delay values, with which x-align is reconfigured to maximize the alignment of x's. The scan cell observability enhancement delivered by x-align paves the way for the utilization of simple response compactors, such as parity trees, yet providing high levels of test quality even in the presence of a large density of response x's. X-align can also be utilized with any response compactor to manipulate the x distribution in favor of the compactor, thus improving the test quality attained. 相似文献
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研究了注F加固PMOSFET的总剂量辐照响应特性和辐照后由氧化物电荷、界面态变化引起的阈电压漂移与时间、温度、偏置等退火条件的关系,发现一定退火条件下注F加固PMOSFET由于界面态密度、特别是氧化物电荷密度继续增加,使得电路在电高辐照后继续损伤,探讨了加速MOS器件电离辐照感生界面态生长的方法。 相似文献