基于LTPS制程工艺的LCD/OLED显示用玻璃基板发展综述

随着显示行业高端消费品的发展要求,LTPS成为目前显示领域炙手可热的先进技术,但是由于国外技术封锁,国内全部依赖进口,因而我们必须自主研发,提升综合竞争力。本文基于平板显示最新发展动态和研发热点,综述了高分辨率LCD/OLED显示产品所用LTPS制程工艺种类与特点,以及LTPS制程工艺对玻璃基板的理化性能要求,其中,玻璃基板耐热性、热膨胀系数、紫外透过率、弹性模量是十分关键的技术指标;论述了溢流法生产工艺和浮法生产工艺所生产的LTPS玻璃基板的优势与劣势;总结了美国和日本开发满足LTPS制程工艺的玻璃基板产品状况;讲述了我国尚未形成技术和产业突破,亟须加大对LTPS制程工艺的玻璃基板的研发投入和产业探索的现状。     

2.彩虹液晶玻璃基板生产线动工为打破国外垄断迈出关键一步

事件:2007年1月,中国第一条自主建设的液晶玻璃基板生产线在彩虹集团公司开工建设.该项目总投资为13亿元人民币,首期投资8亿元,建设1条TFT-LCD第5代液晶玻璃基板生产线,在一期工程生产正常时,将启动二期工程.     

TFT-LCD玻璃基板材料性能与生产特点

薄膜晶体管液晶显示器(Thin-film transistor liquid crystal display,TFT-LCD)的兴起为TFT-LCD玻璃提供了巨大的市场需求。作为TFT-LCD的消费大国,中国也正在成为TFT-LCD显示器件的生产大国,在此背景下,国内TFT-LCD玻璃生产设施的建设也将成为必然。因此,及时分析TFT-LCD玻璃生产的工艺特点,研究TFT-LCD玻璃生产设施的规划原则和设计要点,     

TFT-LCD用聚酰亚胺液晶取向层的研究与应用进展

综述了薄膜晶体管驱动液晶显示器(TFT-LCD)用聚酰亚胺(PI)取向层的研究应用进展以及未来发展趋势。从TFT-LCD对PI液晶取向层的性能需求、PI液晶取向层的分子结构设计与研究开发现状以及PI液晶取向层在TFT-LCD中的实际应用等方面进行了阐述,重点介绍了摩擦型PI液晶取向层以及光控型PI液晶取向层的研究与应用进展。     

PMMA光学模塑料生产新技术

目前聚合物光学模塑料的应用越来越广泛。聚甲基丙烯酸甲酯(PMMA作为透明性塑料不仅光学特性好,而且由于具有质轻、耐冲击和容易成型加工等塑料性能的优点,因而可替代无机玻璃,在光学领域获广泛应用,现在PM-MA光学模塑料已成为镜片、光盘、光纤、液晶显示器等光学领域不可缺少的材料。特别是近几年液晶显示器LCD的市场增长十分迅速,作为液晶显示器LCD导光板的材料,光学级PMMA模塑料使用量有了大幅度的增长,而我国目前还不能生产光学级PMMA模塑料,所需材料全部依赖进口。据预测,2005年全球电脑用液晶显示器LCD的消费量将赶上传统的…     

TFT-LCD液晶显示器项目落户包头

包头稀土高新区与华晶电子集团有限公司,日前在稀土高新区投资建设TFT-LCD液晶显示器及相关IT产品项目签订了合作协议。按照协议,华晶电子集团将在包头稀土高新区投资3亿元建设TFT-LCD液晶显示器项目,主要开发、生产经营TFT液晶显示器模组及开发研究相关高科技电子产品。项目主要针对24英寸以下的TFT-LCD显示器产品,项目设计年生产能力为(以19英寸显示器计算)年产量60万台,将来逐步增加到300万台。其中一期工程为年产10万台。该项目达产后可实现产值30亿元。     

量子点显示：让“视界”更精彩

正1量子点材料发展及应用探索现代显示器技术经历了阴极射线显像管(Cathode Ray Tube,CRT)显示器、液晶显示器和自主发光显示器几个阶段,目前的主流产品仍是液晶显示器。在第3代显示器中,有机电激光显示(OrganicLight—Emitting Diode,OLED)已经初步实现产业化,Micro—LED虽异军突出但尚有产业化瓶颈未突破。第3代显示器有许多优点,例如自主发光、低功耗、轻     

液空在华签订尖端显示器供气合同

正液化空气集团(液空)近日与中电熊猫液晶显示科技有限公司(中电熊猫与夏普液晶显示器的合资企业)在华签订长期合同,为其首家工厂供应高纯载气。该工厂将生产用于移动设备和电视机的基于第8.5代玻璃基板的氧化物薄膜晶体管显示器。根据合同,液空将投资约2500万欧元,在位于江苏省南京液晶谷的中电熊猫新工厂建造一套大型     

液化空气集团在华签订为尖端显示器技术供气合同

<正>液化空气(中国)投资有限公司网站2014年5月28日报道,液化空气集团新近与中电熊猫液晶显示科技有限公司(中电熊猫与夏普液晶显示器的合资企业)在华签订了一项重要的长期合同,为其首家工厂供应高纯载气。该工厂将生产用于移动设备和电视机的基于第8.5代玻璃基板的氧化物薄膜晶体管显示器。氧化物薄膜晶体管显示器是一种复杂的高清显示技术,仅有为数不多的几家企业掌握了量化生产工艺。该显示器     

京东方推出低成本高性能的新型液晶显示屏

国内规模最大的TFT-LCD(薄膜晶体管液晶显示器件)制造商——京东方日前宣布,该公司成功研制采用COG(chiponGlass)技术的液晶面板。该产品将芯片直接焊接在液晶玻璃基板上,从而减少了玻璃基板和印刷线路板之间的连线数量,产品的可靠性因此得以大幅度提高。据京东方方面介绍,COG技术通过削减用于承载驱动IC的COF(ChiponFilm),以及缩小印刷电路板的面     

Elucidating the hydration properties of paste containing thin film transistor liquid crystal display waste glass

This study discusses the thin film transistor liquid crystal display (TFT-LCD) waste glass-blended cement (WGBC) pastes. It presents their compressive strength, their products of hydration and solid silicates changes. The samples were subjected to Fourier transformation infrared spectroscopy, differential thermal and thermo-gravimetric analysis and (29)Si magnetic angle spinning/nuclear magnetic resonance. The experimental XRD results demonstrated the speciation of the TFT-LCD waste glass, and that the major component was SiO(2). At 40% substitution of TFT-LCD waste glass, at 28 days and 56 days, the compressive strength was 35% and 30% lower, respectively, than that of the Portland cement paste. The intensity of the Ca(OH)(2) band at 3,710 cm(-1) in the 56-day hydrated products of the WGBC pastes that contain TFT-LCD waste glass exhibit comparatively weak peaks suggesting that much Ca(OH)(2) during hydration was consumed. Later, the CSH contents of the WGBC pastes increased, revealing that liberated Ca(OH)(2) was consumed in pozzolanic reactions.     

液晶垂直取向膜材料的研究

叙述了近几年来液晶垂直取向材料领域的发展。对目前常见的几种具有应用前景的垂直取向技术分别给予了关注,同时初步探讨了其各自的取向机理,并展望了该技术在未来几年可能获得的发展。     

The influence of knowledge source and ambidexterity in the thin film transistor and liquid crystal display industry: evidence from Japan,Korea, and Taiwan

Based on country-level comparisons, this study applies geographic (internal vs. external) and knowledge (exploitation vs. exploration) boundaries to explore the influence of knowledge sources and ambidexterity on production and innovation performance in the thin film transistor-liquid crystal display (TFT-LCD) industries of the three major players, Japan, Korea, and Taiwan, from 1995 to 2009. Our findings suggest that different resource-based industrial development strategies are associated with the specific knowledge acquisition strategies in the technology leader, Japan and its followers, Korea and Taiwan. The contribution of this study is empirical verification of the influence of knowledge sources and ambidextrous capabilities on production and innovation activities in the TFT-LCD industries of these countries. Since each country is endowed with different resources, this study aims to reveal the strong implications of this for the design of an industrial strategy that has to acquire both known and new knowledge through internal and external sources simultaneously, while carefully integrating them and exploiting their interactions.     

The utilization of thin film transistor liquid crystal display waste glass as a pozzolanic material

This investigation elucidates the pozzolanic behavior of waste glass blended cement (WGBC) paste used in thin film transistor liquid crystal displays (TFT-LCD). X-ray diffraction (XRD) results demonstrate that the TFT-LCD waste glass was entirely non-crystalline. The leaching concentrations of the clay and TFT-LCD waste glass all met the current regulatory thresholds of the Taiwan EPA. The pozzolanic strength activity indices of TFT-LCD waste glass at 28 days and 56 days were 89% and 92%, respectively. Accordingly, this material can be regarded as a good pozzolanic material. The amount of TFT-LCD waste glass that is mixed into WGBC pastes affects the strength of the pastes. The strength of the paste clearly declined as the amount of TFT-LCD waste glass increased. XRD patterns indicated that the major difference was the presence of hydrates of calcium silicate (CSH, 2 theta=32.1 degrees), aluminate and aluminosilicate, which was present in WGBC pastes. Portland cement may have increased the alkalinity of the solution and induced the decomposition of the glass phase network. WGBC pastes that contained 40% TFT-LCD waste glass have markedly lower gel/space ratios and exhibit less degree of hydration than ordinary Portland cement (OPC) pastes. The most satisfactory characteristics of the strength were observed when the mixing ratio of the TFT-LCD waste glass was 10%.     

Using an attribute conversion approach for sample generation to learn small data with highly uncertain features

Accelerating new product development has become an important marketing strategy for manufacturers who are competing globally. However, this may lead to the small data learning issue. Although machine learning algorithms are used to extract knowledge from training samples, algorithms may not output satisfactory predictions when training sizes are small. This paper provides a real case of a TFT-LCD (thin film transistor liquid crystal display) maker when a new strengthened cover glass is developed using chemical processes. With very little prior experience about the processes involved, engineers attempted to improve the yield rates by determining the parameters from a few pilot-run data. However, owing to the fact that the processes were different from those required to make TFT-LCD panels, the highly uncertain characteristics of the processes led to the use of two virtual sample generation (VSG) approaches, bootstrap aggregating (bagging) and the synthetic minority over-sampling technique, from which unsatisfactory results were obtained. Accordingly, this study was used to develop a systematic VSG method based on fuzzy theory to tackle the learning issue. The experimental results show that support vector regressions built with training sets containing the proposed samples present more precise predictions and thus can help engineers infer more correct manufacturing parameters.     

铝诱导晶化法低温制备多晶硅薄膜

为了满足在普通玻璃衬底上制备多晶硅薄膜晶体管有源矩阵液晶显示器,低温（＜６００℃）制备高质量多晶硅薄膜已成为研究热点．本文研究了一种低温制备多晶硅薄膜的新工艺：金属诱导非晶硅薄膜低温晶化法．在非晶硅薄膜上蒸镀金属铝薄膜,并光刻形成铝膜图形,而后于氮气保护中退火．利用光学显微镜和拉曼光谱等测试方法,研究了Ａｌ诱导下非晶硅薄膜的晶化过程,结果表明;在５６０℃退火６ｈ后;铝膜下的非晶硅已完全晶化,确定了所制备的是多晶硅薄膜．初步探讨了非晶硅薄膜金属诱导横向晶化机理．     

OLED技术及其在中国的产业化之路

OLED以其主动发光、广视角、快响应速度等出众的显示特性享有"终极显示器"之称,尤其具有可以弯曲折叠、透明显示的特点,更有"梦幻显示器"的美誉,除可以广泛用于手机、数码相机、电脑显示器、平板电视及特种显示等领域外,还可以用于绿色照明。在世界信息产业三大核心技术中,中国唯一可以崛起的是显示技术,而在CRT、LCD、OLED三代显示技术中,中国唯有OLED技术与世界站在了同一起跑线上,因此发展OLED产业,是我国实现显示产业大国梦想最佳的机会。但是,要掌握行业话语权,走我国自主的OLED产业化之路,就必须瞄准大尺寸化AMOLED等技术方向,自主突破LTPSTFT等关键技术,必须有综合实力较强的领军企业,必须打造包括科研院校在内的产业链集群,必须站在国家长期发展的战略高度,有政府的产业政策支持。     

Lean-pull strategy in a re-entrant manufacturing environment: a pilot study for TFT-LCD array manufacturing

The increase of a panel's size in thin film transistor – liquid crystal display (TFT-LCD), results in an increase in stock space and increased cost from work-in-process (WIP). This paper proposes a lean-pull strategy, combining buffers with CONWIP (CONstant work-in-process), which results in shared resources to a re-entrant process in TFT-LCD manufacturing. The buffer size and CONWIP levels are the decision variables and are solved by simulation optimisation. The proposed procedure is applied to a factory that manufactures TFT-LCD. The study shows that the proposed lean-pull strategy can reduce the cycle time and achieve a reduction of 34.57% in WIP. The automated material handling systems (AMHS) stocker utilisation can be reduced from 62.13% to 18.49% without additional investment or facilities. Sensitivity analysis indicates the maximum daily throughput will achieve over 10% improvement. The empirical results from this pilot study provide useful managerial insights for the production control of array manufacturing.     

Robust production and transportation planning in thin film transistor-liquid crystal display (TFT-LCD) industry under demand and price uncertainties

This paper studies the production and transportation control (PTC) problems under demand and price uncertainties in a multi-product, two-echelon, and hybrid thin film transistor-liquid crystal display (TFT-LCD) production chain. The unique characteristics of the TFT-LCD industry, including quality grades and alternative bill-of-materials (BOMs), are considered in this study. The objective is to determine a production and transportation policy that is robust to price and demand uncertainties. This two-echelon PTC problem is formulated as several two-stage robust optimisation models. An iterative procedure is developed to apply and solve these two-stage models in a TFT-LCD production chain. Our simulation study shows that the proposed method can significantly increase profits while reducing transportation and inventory costs. In addition to improving mean and variance of profits, we use several risk measures to verify the robustness of the iterative optimisation procedure.