光电显示技术发展研究

光电显示技术作为光电技术的重要组成部分,近年来发展迅速,应用广泛．研究了CRT器件技术的发展特征,综合分析了平板显示技术的研究进展,着重介绍了液晶显示（LCD）,等离子显示（PDP）、场致发射显示（FED）、有机电致发光显示（OLED）及数字光处理投影技术的发展现状和趋势,对新型微显技术——液晶硅显示和环保型电子纸技术的未来应用进行了探讨和说明．     

投影技术的最新发展

1.引言 目前正处于由模拟向数字过渡的时代,以光控制系统区分投影显示可分为两大类。一为自发射投影,一为光反射投影,即非发光光调制投影（图1）。在投影设备中,显示器件占有重要地位。显示器件按视频信号进行光调制,光发射显示器件采用发光显示器件,其中典型的为CRT。     

在FEA中使用的MOSFET技术

本文对以ＭＯＳＦＥＴ（金属氧化物硅场效应薄膜晶体管）技术提高ＦＥＤ（场致发射显示）等器件的ＦＥＡ（场致发射阵列）阴极发射电流的稳定性作了说明,并就对ＭＯＳＦＥＴ技术的改进作了介绍。     

STN-LCD发展趋势

介绍了显示器件的主要发展趋势,重点介绍了ＡＳＴＮ－ＬＣＤ（超曲向列相液晶显示器）的进步,对ＳＴＮ－ＬＣＤ的市场,也进行了讨论。     

碳纳米管场发射显示器件(CNT-FEDs)封接关键技术的研究

碳纳米管场发射显示器件（CNT—FEDs）现已成为场发射研究的热点。本文研究了碳纳米管场发射显示器件在其真空封接过程中出现的碳纳米管丢失的问题,对碳纳米管场发射显示器件的封接方法提出了一些改进,并提出一种新型的碳纳米管场发射显示器件的封接结构,有效的解决了真空封接过程中的碳纳米管丢失的问题,为碳纳米管场发射显示器件（CNT-FEDs）的发射均匀性,改善区域之间的亮度差异及延长使用寿命提供了保证。     

碳纳米管场致发射显示灰度调制方式的研究

碳纳米管的一个重要的应用是在场发射显示器件中作为电子的发射体。本文主要探讨了幅度调制、空间调制、时间调制等几种平板显示中常见的灰度等级实现方式以及其各自的优缺点，尤其针对碳纳米管场致发射显示（CNT-FED）中发射体的缺陷和功耗等问题进行了深入研究。脉宽调制（PWM，Pulse Width Modulation）能够一定程度上保护碳纳米管，降低碳纳米管显示器的功耗，而且实现简单。最后本文给出PWM方式实现CNT—FED的灰度显示的实验方案和在碳纳米管显示器样机上的显示效果图。     

几种新型显示技术的研究

本文重点分析了表面传导显示（ＳＥＤ）,纳晶电变色显示（Ｎ－ＥＣＤ）以及旋转球显示等新型显示技术,说明了了综们目前的研究状况。     

OLED技术及应用

当OLED显示器件成为主流时,设计工程师也面临着显示技术进步的压力 有机发光二极管（Organic LightEmitting Diode,OLED）器件正逐渐进入主流显示市场,它具有厚度薄、功耗低、能够显示亮度高和色彩鲜艳的图像等优点,并具有对任何物体进行全彩色显示的能力。     

平板显示技术的现状和发展趋势

平板显示一般是指显示器件的深平度小于显示屏对角线长度四分之一的显示技术。和传统的ＣＲＴ相比，它具有体积小、重量轻、电压低、无Ｘ射线等优点，能适应当今信息社会对信息便携和实时处理的要求，因而近年来获得了飞速的发展。世界平板显示产业的产值１９９５年达９０亿美元，到２０００年将超过２００亿美元，与当时ＣＲＴ的产值相当。专家们预言，平板显示是２１世纪的显示技术，是２１世纪显示技术的主流。根据不同的工作原理，平板显示技术可分为液晶显示（ＬＣＤ）、等离子显示（ＰＤＰ）、电致发光显示（ＥＬＤ）、场发射显示（Ｆ…     

聚合物LEC—一种新型聚合物平板显示器件

聚合物ＬＥＣ——一种新型聚合物平板显示器件李文连（中国科学院长春物理研究所长春１３００２１）自１９８７年美国柯达公司Ｔａｎｇ等人［１］及１９９０年英国剑桥大学Ｂｕｒｏｕｇｈｅｓ等人［２］分别研制出有机和聚合物光发射二极管（ＬＥＤｓ）以来，其发展速度...     

Technique of Position Sensitive Detector with Alternating Light Source^①

The signal processing circuits of position sensitive detector(PSD)with alternating light source are presented.The measuring device of PSD with alternating light source can effectively eliminate the interference made by light noise signal.     

交变光源型位敏器件应用技术

在利用直流光源型半导体位敏器件（ＰＳＤ）进行测量时，常因环境光强的改变而引起误差。本文介绍的交变调制光源及其相应的ＰＳＤ光电信号处理电路，可大大地降低和消除杂散光对测量的影响。     

硅烷偶联剂在PDP显示电极制作中的应用

提出用硅烷偶联剂对PDP基板玻璃进行预处理，降低其表面能，使得厚膜工艺制作的PDP上板显示电极线条宽度变窄，进而增加透射比，在一定程度上改善了PDP的发光亮度。     

MIDyM隧道发光二极管的研究

稀土元素Dy引入以玻璃为基底的隧道发光二极管（简称为MIDyMTD）后，其发光强度得到了明显提高，Ⅰ－Ⅴ特性的负阻现象变弱，并出现了较弱的量子共振隧穿现象。量子共振隧穿导致了起发光中介作用的SPP慢模式的增强，最终导致了MIDyMTD发光的增强。另外，以铌酸锂单晶片为基底的MIDYMTD出现了较大的负阻（峰：谷—7：1），并且发射光谱的短波方向出现了戏剧性的增加。     

Light Out‐Coupling Efficiencies of Organic Light‐Emitting Diode Structures and the Effect of Photoluminescence Quantum Yield

Results obtained from modeling the light out‐coupling efficiency of an organic light‐emitting diode (OLED) structure containing the recently developed first‐generation fac‐tris(2‐phenylpyridine) iridium‐cored dendrimer (Ir‐G1) as the emissive organic layer are reported. Comparison of the results obtained for this material with those of corresponding structures based upon small‐molecule and polymer emissive materials is made. The calculations of out‐coupling efficiency performed here take account of many factors, including the photoluminescence quantum yield (PLQY) of the emissive materials. Further, how each material system might perform with regard to out‐coupling efficiency when a range of possible PLQYs are considered is shown. The calculations show that the very high efficiency of dendrimer‐based OLEDs can be attributed primarily to their high PLQY.     

广义光束和广义ABCD定律

从广义光束的概念出发，推导了几类常用广义光束的Ｑ参数表达式，从而将广义ＡＢＣＤ定律的适用范围从几何光学，球面波和高斯光束推广到广义光束，并对广义ＡＢＣＤ定律的应用条件作了深入分析，指出了研究几类常用光束传输变换时较合适的分析方法。     

双反射面形成光驻波场的研究

分析了镜面的反射系数与光驻波场的关系，详细讨论了影响双反射面形成的驻波场的各种因素，并对TE波和MT波驻波场的光强分布进行了模拟和比较，最后得到了一些对实验有指导意义和结论。     

Extracting Light from Polymer Light‐Emitting Diodes Using Stamped Bragg Gratings

In this paper, we describe a method for increasing the external efficiency of polymer light‐emitting diodes (LEDs) by coupling out waveguided light with Bragg gratings. We numerically model the waveguide modes in a typical LED structure and demonstrate how optimizing layer thicknesses and reducing waveguide absorption can enhance the grating outcoupling. The gratings were created by a soft‐lithography technique that minimizes changes to the conventional LED structure. Using one‐dimensional and two‐dimensional gratings, we were able to increase the forward‐directed emission by 47 % and 70 %, respectively, and the external quantum efficiency by 15 % and 25 %.     

多孔硅发光器件的设计与试验

设计了多孔硅电致发光器件，讨论了工艺条件对器件Ｉ—Ｖ特性影响。试验中已观察到微弱的电致发光。认为利用多孔硅制备可见光发光器件是可行的。     

LOPE: A Low-Overhead Payment Verification Method for Blockchains

With its characteristics of decentralization, security, data traceability, and tamper-resistance, the blockchain has been widely used in various domains. Considering the difference in the performance of the devices, the light client is proposed so that devices without the ability to store a full blockchain copy can also participate in the blockchain transactions. However, the light client has to communicate with full nodes and verify the authenticity of a transaction which brings in some extent of communication, computation, and storage overheads to the light client. These overheads cannot be ignored for some low-performance devices, such as embedded devices or IoT chips, and therefore the current light client scheme does not work in this situation. We propose LOPE (a Low-overhead payment vErification method) for poor-capacity nodes in the blockchain system. In LOPE, a grouping protocol is designed to partition full nodes into groups to serve the verification requests of the light client. In addition, Practical byzantine fault tolerance (PBFT) is used to ensure the light client to get a credible result in spite of a few dishonest nodes existing in the group. We conduct LOPE and evaluate it in a testbed. The experiment results show that LOPE reduces more than half of the communication overhead, degrades the computation overhead of the light client to a large extent, and avoids the storage overhead of the hash roots of block headers in the light client. We also conduct theoretical analysis to show the performance improvement and security issues of LOPE.