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1.
铁电液晶红外探测研究   总被引:2,自引:0,他引:2  
史永基 《半导体光电》1992,13(3):268-272
某些碟状近晶相液晶具有铁电和热电性质。本文综述了铁电液晶的性质和介电、热电及脉冲响应特性;报道了我们对复合固体铁电液晶薄膜探测器的最新研究成果。  相似文献   

2.
我国铁电液晶材料研究进展   总被引:4,自引:1,他引:3  
自从Clark与Lagerwall提出表面双稳铁电液晶显示原理后,铁电液晶材料在显示领域中的应用一直是国内外研究的热点课题,总结了国内外近年来铁电液晶材料的合成与研究工作和目前在显示领域应用中遇到的问题,并阐述了在其他领域的应用前景。  相似文献   

3.
彩色滤波膜、透明导电膜,表面稳定的铁电液晶取向膜等构成了彩色铁电液晶显示器的主要材料。文章论述了彩色铁电液晶显示器的制造和性能,制出的铁电液晶显示器,其对比度达84:1,上升时间为110μs,下降时间为76μs。  相似文献   

4.
铁电液晶空间光调制器   总被引:1,自引:0,他引:1  
铁电液晶空间光调制器具有响应快、开关功耗低以及双稳态开关特性等优点,在光学信息处理、光计算和神经网络等中有特点诱人的优势。本文介绍了表面稳定型铁电液晶器件的特点及研究进展,并着重描述了光寻址铁电液晶/氢化非晶硅器件的结构、工作原理、主要研制技术关键及共应用。  相似文献   

5.
通过对过渡散射铁电液晶显示器和反铁电稳定化铁电液晶显示器的工作原理、工作特性分析,介绍了它们各自的动态特性-驱对电压,响应速度,对比度,透过率以及储存驱动性,同时也介绍了它们各自的用途。  相似文献   

6.
将铁电液晶分子的结构分为分子核、非手性尾和手性尾来讨论这些结构的变化对铁电液晶的相行为和铁电性能的影响,以期对铁电液晶的分子结构和其性能的关系有更深的认识。文章首先讨论分子核结构对铁电液晶性能的影响。  相似文献   

7.
Ha.  WJAM 张敏 《光电子技术》1989,9(3):45-49,19
尽管表面稳定的铁电液晶(SSFLC)有双稳态效应,但是,在多畴结构的基础上产生宽范围灰度的可能性得到了验证.已经实现有源矩阵铁电液晶(FLC)电视显示(黑白),证实了灰度性能.  相似文献   

8.
1、引言铁电液晶具有高速响应和存储特性而应用于显示器件.和向列型液晶一样,无需采用TFT驱动方式,可考虑采用简单矩阵电极的静态驱动和多路驱动.此外其高速响应特性可满足电视显示需要,现正广泛进行研究开发.在应用铁电液晶作液晶显示材料时,必须开发室温下稳定的铁电液晶、稳定地制备薄型大面积液晶板以及解决其取向方法、驱动方式等.  相似文献   

9.
铁电及反铁电液晶显示   总被引:1,自引:0,他引:1  
介绍铁电液晶及反铁电液晶显示的特点,对铁电液晶显示器中,分子排列不易均匀和容易受振动而破坏的难题,提出了解决办法,指出铁电液晶显示器和反铁电液晶显示器具有很好的发展前景。  相似文献   

10.
铁电液晶及其应用   总被引:5,自引:1,他引:4  
某些碟状近晶相液晶具有铁电和热电性质。最简单的铁电液晶是近晶 C相(碟状近晶 c 相)。文章综述了铁电液晶的电光效应、器件结构、取向方法和主要应用。报道了作者对复合铁电液晶材料的最新研究成果。  相似文献   

11.
《IEE Review》1996,42(5):187-189
Three-dimensional display systems generally require the user to wear special glasses. The author describes a research programme-aimed at providing a high-quality spectacle-free look into the third dimension. It is based on the Twin-LCD display concept developed by the Imaging Technology Department at Sharp Laboratories of Europe. The author describes how the Twin-LCD system works. It is based on two thin-film transistor (TFT) LCDs whose images are superimposed by a half-mirrored beam-combiner. The input optical arrangement creates two laterally displaced images at the nominal observer position. If an observer places an eye in a window, then an image from one of the LCDs can be seen. Each LCD panel displays one of the stereo pair images and so the observer sees the 3D image without the need for any special glasses  相似文献   

12.
A dynamic analysis of an amorphous silicon (a‐Si) thin film transistor liquid crystal display (TFT‐LCD) pixel is presented using new a‐Si TFT and liquid crystal (LC) capacitance models for a Simulation Program with Integrated Circuit Emphasis (SPICE) simulator. This dynamic analysis will be useful when predicting the performance of LCDs. The a‐Si TFT model is developed to accurately estimate a‐Si TFT characteristics of a bias‐dependent gate to source and gate to drain capacitance. Moreover, the LC capacitance model is developed using a simplified diode circuit model. It is possible to accurately predict TFT‐LCD characteristics such as flicker phenomena when implementing the proposed simulation model.  相似文献   

13.
多晶硅薄膜晶体管液晶显示器件的优化设计   总被引:3,自引:3,他引:0  
针对多晶硅薄膜晶体管液晶显示器件关态漏电流较大的问题,采用源漏轻掺杂结构以降低关态时电荷的泄漏,增加晶体管的开关电流比值,通过模拟轻掺杂区不同的物理参数,如掺杂浓度及掺杂区宽度等,研究薄膜晶体管的开关电流比值,由此确定像素各部分的尺寸,对液晶显示器件进行优化设计。  相似文献   

14.
Revolution of the TFT LCD Technology   总被引:1,自引:0,他引:1  
The introduction of flat panel displays that are fabricated with thin-film-transistor liquid-crystal displays (TFT LCDs) has changed human's lifestyle very significantly. Traditionally, the revolution of the TFT LCD technology has been presented by the timeline of product introduction. Namely, it first started with audio/video (AV) and notebook applications in the early 1990s, and then began to replace cathode-ray tubes (CRTs) for monitor and TV applications. Certainly, TFT LCDs will continue to expand in all areas of our daily life in the future. Here a new concept of the revolution of the TFT LCD technology is presented for the major TFT LCD makers. In this new concept, there are four waves of technology revolution with the following themes, respectively: 1) product introduction; 2) performance enrichment; 3) power and material utilization; and 4) functions for human interface. The role of the LCD-TV in the revolution is also discussed.  相似文献   

15.
嵌入式控制系统LCD驱动问题研究   总被引:1,自引:0,他引:1  
侯殿有  刘晓光  吉鹤 《现代显示》2009,20(11):54-60
文章讨论液晶(LCD)显示驱动问题。液晶显示模块一般由控制器、驱动器和显示屏组成,不同型号的显示模块只要使用同一型号的控制器,驱动程序基本相同。液晶显示控制器根据结构可分为TN、STN和TFT几种,根据功能则有字符型和点阵型之分。字符型LCD只能显示西文字符和笔划较少的汉字,功能较少,价格低廉,编程容易;点阵型LCD功能强大,可以显示较复杂的汉字和各种曲线。虽然LCD产品型号繁多,功能各异,但其驱动程序还是有规律可循。本文就液晶显示驱动规律谈自己的工作体会,供同行参考。  相似文献   

16.
平板显示技术的发展   总被引:11,自引:20,他引:11  
黄锡珉 《液晶与显示》2002,17(5):317-322
介绍了平板显示发展动态,重点介绍液晶显示发展动态。TFT-LCD发展速度符合西村-北原规则,其规则指出TFT-LCD增长速度为3年增长4倍,其数值是玻璃基板尺寸增长速度为1.8倍/3年,屏幕尺寸增长速度为1.44倍/3年,分辨率增长速度为2.5倍/3年及灰度增长速度为1.7倍/3年等相乘而得的。该结果表明TFT-LCD增长速度相当于遵守摩尔规则的微电子发展速度。  相似文献   

17.
The Korean display industry, led by the Samsung and LG Group, has been investing more than 3 billion US dollars in the development and production of large bright high-definition liquid-crystal displays (LCDs) and plasma display panels (PDPs) using new fifth-generation substrate glass. Recent developments have been significant and wide-ranging, with brighter and longer life characteristics as well as improving the manufacturing process for lowered production cost. Samsung Electronics has developed the world's largest 40-in ultra-extended graphics adapter (UXGA) thin-film transistor (TFT) LCD panel for high-definition televisions and engineering workstations, while LG Electronics manufactured a brighter high-definitional 65-in wide UXGA PDPs competing with projection televisions for home theater. Since the first-stage National Research Project for developing TFT LCDs and PDPs was terminated in September 2001, the second-stage Advanced New Research Program for developing more wearable and reliable organic light-emitting diodes than conventional types are proposed by a group of research scientists and engineers working for novel display materials in academia and government-funded research institutes as well as display industries in 2002  相似文献   

18.
《Spectrum, IEEE》2006,43(1):38-41
The Irish company, Ntera Ltd., has developed an alternative to the LCD display. Called NanoChromics display (NCD), it features a stark, razor sharpness, with nearly black images on almost luminous, paper-white background. Text is easy to read in most lighting conditions, with a contrast ratio of 6:1 and a brightness of at least four times that of an LCD. NCD is also power-thrifty because its high contrast ratio eliminates the need for any kind of separate lighting systems and they do not need to be constantly refreshed unlike LCDs. In addition, NCDs can be manufactured on almost the entirely the same equipment used to manufacture LCDs. Hence, manufacturing cost of both display technologies are almost equal.  相似文献   

19.
S3C2440A驱动RGB接口TFT LCD的研究   总被引:1,自引:1,他引:0  
介绍了一款较典型的TFI型液晶屏的接口时序和逻辑要求,设计了嵌入式微处理器S3C2440A与该款带触摸屏功能的TFT LCD模组的接口电路,基于嵌入式Linux系统开发驱动程序,完成了RGB接口显示参数设置、图形界面显示调整及触摸屏控制等功能,实现了系统清晰、稳定的显示.实验表明,该方案通用性好,可以驱动不同分辨率的TFT LCD并提供显示与触摸控制功能;可移植性强,可以为各种嵌入式系统提供一个驱动TFT LCD的完整解决方案.  相似文献   

20.
本文从AM-LCD应用于高信息容量图象显示的角度,提出了多适配性小型AM-LCD的设计方案,并通过用于眼科A/D超声仪对设计方案进行了验证。在多种输入信号的情况下均获得了对整机显示效果具有重要意义的Vsys,Hsys和点时钟信号。  相似文献   

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