液晶显示器用偏光片技术及市场分析

首先介绍偏光片在液晶显示器中的应用原理,接着介绍偏光片的基本结构与组成偏光片的各膜层材料,最后分析目前偏光片的主要的国内外生产企业和近几年偏光片的市场情况。     

偏光片中的染料剖析

由于偏光片独具的光学特性,又是一种薄型的片状材料,便于加工使用,因而在生活用品、工业交通、国防和尖端科学技术中都有广泛的应用。本文的工作是采用波谱技术对国外的优质偏光片进行染料结构的剖析研究,结合相关资料查阅,从而掌握国际上优质偏光片所应用染料的结构信息,了解此项技术的发展动态。     

染料吸光系数在PVA膜染色中的应用研究

通过进行直接染料标准溶液的吸光度A-浓度[C]的标准曲线和PVA膜染色实验,分析了染料的吸光系数与PVA膜的染色深度成正比关系,与偏光子的透过率成反比关系。并阐述了染料吸光系数在染料系偏光片PVA膜染色中的应用,为染料系偏光片试验、生产使用各种染料的需用量提供了一个有效的分析方法,不同染料可以根据吸光系数来判断达到规定透过率的染料用量,同时可以选择吸光系数较大的染料进行生产,既提高效率降低成本,又大大降低环境染料。这些研究对于染料系偏光片的工艺完善有着重大研究意义。     

光学薄膜的数字滤波器设计方法

本文给出利用数字滤波器的设计方法设计光学薄膜的具体过程.由数字滤波器设计软件,按照光学薄膜的设计要求给出光学薄膜目标谱传递函数,将光学薄膜传榆矩阵表示为格型数字滤波器传输矩阵的数学形式,导出等光学厚度光学薄膜传递函数的递归关系式.利用光学薄膜传递函数递归关系,采用剥层算法计算出各膜层的折射率,得到满足目标谱传递函数的膜...     

光学薄膜及其发展现状

介绍了传统光学薄膜的原理,并对反光膜、增透膜、纳米光学薄膜等传统光学薄膜的研究现状及应用情况,以及几种新型光学薄膜如高强度激光器、金刚石及类金刚石膜、软X射线多层膜、光电通信用光学薄膜的研究现状及应用进行了详细分析;最后对光学薄膜的发展前景进行了展望。     

膜层的光学薄膜参数测量方法研究

简述了研究膜层光学薄膜参数测量方法的必要性。详细介绍了各种测量方法的理论思想、测量准确度、测量范围。综合比较了各种测量方法的优缺点和适用性,研究了测量不同类型薄膜系统膜层光学薄膜参数的最佳测量方法。最后总结了膜层光学薄膜参数测量方法的发展,并提出了建议。     

真空淀积光学薄膜用的材料

前言薄膜可以改变光学元件表面的物理性质和化学性质。利用薄膜改变光学仪器中的光线方向、强度和光谱成分(即所谓干涉膜),或者用来提高化学性质很差的光学元件表面的化学性能和环境性能,例如抗酸、碱、盐溶液及抗潮湿、抗盐雾、抗霉菌等的腐蚀(即所谓三防保护膜)。所以光学薄膜已经被广泛地应用在光学工业上。近几年来由于新技术,如,量子电子学、彩色电视、全息照像等的发展,光学薄膜材料的研究也不断地深入,尤其是用真空     

原子层沉积技术及其在光学薄膜中的应用

回顾了原子层沉积(ALD)技术的发展背景,通过分析ALD的基本工艺,并与传统薄膜制备工艺进行了对比研究.介绍了它在膜层的均匀性、保形性以及膜厚控制能力等方面的优势.着重列举ALD在减反膜、紫外截止膜、折射率可调的薄膜、抗激光损伤薄膜及复杂结构光子晶体等方面的应用.同时指出了目前ALD工艺在光学薄膜应用中存在的主要问题,并对ALD未来的发展进行了展望.     

液晶面板高温寿命试验相对于常温寿命试验加速因子的研究

本文通过对液晶面板(LCD)的高温寿命试验(HLT)及常温寿命试验(RLT)的中期结果分析,估算温度加速因子,以计算液晶面板的平均寿命。     

导波光学技术在测量“夹心”光学薄膜各向异性方面的应用:不同膜堆结构中同类薄膜特性的比较

本文介绍了应用导波光学技术测量“夹心”光学薄膜的特征参数的方法,并研究了比较简单的结构(由二、三层膜组成),检测到了高折射率薄膜的各向异性。从不同结构的膜系中的同类薄膜的比较中发现了单层膜与膜堆中对应的“夹心”膜之间在折射率和各向异性上的差别。     

液晶显示屏(LCD)用三醋酸纤维素(TAC)薄膜的发展现状与前景

本文阐述了三醋酸纤维素(TAC)薄膜的一些最新发展情况。三醋酸纤维素薄膜作为片基(0.12-0.14毫米厚)应用于制作照相胶片已有多年,近年却作为偏光板的支持体(0.04-0.08毫米厚),大量应用于制作液晶显示屏LCD,代替长期以来一直应用的阴极射线管CRT,由于其不产生对人体有害的射线,因而问世后大受欢迎,更因质量迅速提高,生产技术日益成熟,成本显著下降,故其生产规模和市场发展极为迅速。     

聚乙烯醇偏光膜的制备与评价

采用流延法制备出聚乙烯醇偏光膜．并用紫外可见分光光度仅对含碘及碘、镍、钴偏光膜的光学性能进行了研究．结果表明,偏光膜中加入镍、钴后．偏光膜的单片透光率增加,单片偏光系数及组合偏光率增加．垂直组合时,泄漏光的波峰值左移．     

Optimization of the LCD optical film cutting problem

The manufacturing of liquid crystal display (LCD) plays an important role in electronics manufacturing industries, such as televisions, smart phones, pads, laptops, monitors and electronic appliances. Due to the fact that the cost of LCD’s film materials may reach 60–70% of the production cost, appropriate cutting schemes can lead to better raw material utilisation and thus enhance manufacturers’ profitability. Accordingly, the determination of the optimal production plan for cutting different-sized LCD optimal films with the designed cutting angles to fulfil the customers’ orders is a critical issue for the LCD industry. In the past, few studies integrated the different cutting allocation strategies into a synthetic decision. This study proposes a mathematical programming model for the two-stage cutting problem for LCD optical films to determine the optimal cutting allocation strategy with consideration of the costs of raw materials, processing and disposal during the manufacturing process. For large-scale problems in which the runtime for obtaining the optimal solution may grow exponentially as the problem size increases, a heuristic algorithm is also provided to obtain the approximate solution within a reasonable time. Finally, the results of the practical case shows that, compared with the existing fixed-angle cutting method, the proposed approach reduces the total cost by 6.2% due to the better material utilisation. In addition, the processing cost is also reduced due to a decrease in the required materials.     

液晶显示器及其偏光板的研发新进展

本文简述了液晶显示屏的基本结构和偏光板所用塑料薄膜的种类、性能及其研发新进展。介绍了将聚酰亚胺及其薄膜材料应用于图像显示领域的重要性。阐明强化液晶显示器及其偏光板产业链上游产品及其关键电子材料开发的重要性和我国聚酰亚胺行业应挺进现代影像技术领域,感光材料行业应介入聚酰亚胺研发的观点。     

Preparation of ZnO:Al thin film on transparent TPT substrate at room temperature by RF magnetron sputtering technique

Aluminum doped ZnO thin films (ZnO:Al) deposited on flexible substrates are suitable to be used as transparent conductive oxide (TCO) thin films in solar cells because of the excellent optical and electrical properties. TPT films are a kind of composite materials and are usually used as encapsulation material of solar panels. In this paper, ZnO:Al film was firstly deposited on transparent TPT substrate by RF magnetron sputtering. The structural, optical, and electrical properties of the film were investigated by X-ray diffractometry (XRD), scanning electron microscope (SEM), UV–visible spectrophotometer, as well as Hall Effect Measurement System. Results revealed that the obtained film had a hexagonal structure and a highly preferred orientation with the c-axis perpendicular to the substrate. Also, the film showed a high optical transmittance over 80% in the visible region and a resistivity of about 3.03 × 10^? 1 Ω·cm.     

High conductivity transparent carbon nanotube films deposited from superacid

Carbon nanotubes (CNTs) were deposited from a chlorosulfonic superacid solution onto PET substrates by a filtration/transfer method. The sheet resistance and transmission (at 550 nm) of the films were 60 Ω/sq and 90.9% respectively, which corresponds to a DC conductivity of 12,825 S cm(-1) and a DC/optical conductivity ratio of 64.1. This is the highest DC conductivity reported for CNT thin films to date, and attributed to both the high quality of the CNT material and the exfoliation/doping by the superacid. This work demonstrates that CNT transparent films have not reached the conductivity limit; continued improvements will enable these films to be used as the transparent electrode for applications in solid state lighting, LCD displays, touch panels, and photovoltaics.     

数字中间片系统概观

广义的数字中间片系统是处于胶片电影、数字电影及电视、DVD等多种媒体形式中心环节的用于电影后期加工的软、硬平台。本文对数字中间片在当前及未来电影后期制作中的作用和地位等作出了简要介绍。     

Optical characteristics of stretched silver island multilayers for submicrometer-thick optical polarizing films

We fabricated submicrometer-thick optical polarizing films at a wavelength of 1300 nm with extinction ratios of >/=30 dB by stretching periodic multilayers of silver island layers and glass layers. We compared the measured and theoretical optical characteristics of the polarizing films. The measured optical characteristics were quantitatively different from preliminary theoretical ones reported in an earlier paper [Opt. Lett. 16, 964 (1991)]. We have improved the theory by considering the distribution in silver island shapes and the difference between the stretching ratios of the glass layers and the silver islands. We have successfully elucidated the optical characteristics of the fabricated optical polarizing films.     

High rate deposition of mixed oxides by controlled reactive magnetron-sputtering from metallic targets

Mixed optical materials open new possibilities for the design and optimization of thin film properties. For example the refractive index may be tuned between the refractive indices of the pure materials. Low film stress of mixed optical materials can lead to high mechanical and optical capability. Therefore such materials are of great interest for optical applications, especially if the dielectric properties can be tailored during film deposition.A reactive pulsed magnetron deposition using two different pure metallic targets is proposed to alleviate the unfavorable performance of existing mixed optical film deposition methods. Co-sputtering of different materials in such a dual magnetron setup leads to separate hysteresis for each target. Each target is individually controlled using an optical emission spectroscopy system with separated optical fibers integrated in a closed-loop control. Embedded proportional-integral controllers modify a digital pulse pattern used for pulsed discharge power control to stabilize the emission intensity at the set point for pre-selected wavelengths. In this way the composition of the resulting films can be adjusted while the process is controlled in the high-rate transition mode. It was shown that the proposed deposition method is capable to provide continuous tuning of the refractive index of the mixed optical materials throughout the whole range defined by the single-material films.After discussing the process control system, deposition results of hafnium-aluminum-oxide and zirconium-aluminum-oxide films prepared with this technique are presented. Optical and mechanical film properties of the mixtures are compared to the properties of single homogeneous films.     

磁控溅射制备Cu2ZnSnS4薄膜的研究进展

Cu_2ZnSnS_4(CZTS)薄膜由于其合适的禁带宽度、高的光吸收系数以及组分无毒、储量丰富等特性,被视为薄膜太阳能电池最佳的吸收层材料之一。磁控溅射是制备CZTS薄膜的主要方法之一,因为其制备过程相对简单且可以产业化,一直是太阳能电池领域的研究热点。从磁控溅射制备CZTS薄膜的3种路径出发,综述了近年来各种路径在制备CZTS薄膜方面的研究进展,比较了3种路径的优缺点,同时对磁控溅射制备CZTS薄膜的发展前景进行了展望。