平板显示器中应用ACF的驱动IC封装技术

文章叙述了ACF（Anisotropic Conductive Film,各向异性导电膜）与驱动IC（Integrated Circuit,集成电路）芯片封装的历史,并强调了驱动IC封装在实现显示器微型化、高分辨率、低成本及高显示质量等方面的重要性。文章还对微细间距COF（Chip on Flex）连接用ACF的材料设计进行了介绍。文章指出低温固化ACF可以改善LCD（Liquid Crystal Display,液晶显示屏）模块的生产效率,降低大型LCD模块表面的热应力;同时指出COG（Chip on Glass）连接后LCD面板的翘曲变形引起LCD模块漏光事故。ACF焊接温度的降低可以有效减少翘曲变形,避免在应用COG封装大型LCD模块的驱动IC时所产生漏光。     

RTR（Roll to Roll）方式制作25μm／25μmCOF精细线路的参数优化

随着电子产品小型化和液晶显示器IC封装技术的快速发展,COF（Chipon Film）技术的应用市场得到了迅速扩大。按照片式减成方法制作的线宽／线距在50μm／50μm以下的精细线路,常常会出现导线过细或断线等缺陷。论文采用目前先进的RTR（Roll to Roll）生产工艺,选用12μm钢箔、15μm干膜,使用玻璃菲林进行图形转移,并运用正交设计法对影响精细线路品质的曝光能量、显影速度、蚀刻速度、蚀刻压力等因素进行优化试验。以精细线路的线宽和蚀刻系数作为评价标准,找出最佳参数,并分析了蚀刻压力对精细线路的影响机理。将最优化参数应用到生产中,使25μm／25μm的COF精细线路的成品率提高20％。最终实现25μm／25μm的COF精细线路的小批量生产。     

Phosphonates of Vegetable Oils—Characterization as Lubricants

Dialkyl phosphonates of vegetable oils were synthesized by reacting soybean (Soy) and high oleic sunflower (HOSuO) oils with dialkyl phosphites. Dimethyl, diethyl, and di-n-butyl phosphites were used in the synthesis and the resulting phosphonates were obtained in good yields and thoroughly characterized. All six phosphonates displayed poor solubility in polyalphaolefin-6; and four displayed adequate solubility (> 20% w/w) in HOSuO. Evaluation as anti-wear (AW) additives in HOSuO base oil blends showed the biobased phosphonates have similar coefficient of friction and similar or better wear scar diameter than zinc dialkyl dithio phosphates (ZDDP). It is concluded that vegetable oil phosphonates provide a promising biobased alternative to ZDDP and other commercial petroleum-based AW additives currently used in lubricant formulations.     

采用底部填料预涂工艺的Au-Sn粘结倒芯片COF技术

概述了COF粘结技术以及应用底部填料预涂工艺的Au-Sn粘结倒芯片COF技术。     

面临挑战的显示制造业

当前用于制作便携式显示器的STN-LCD和a-Si制造工艺，面对提高分辨率、增强色阶以及加快响应时间等方面的需求，将如何发展？     

应用于COF的无胶基材尺寸稳定性研究

COF技术由于具备诸多优势，已经成为LCD驱动IC的主要封装技术。对三种无胶基材进行实验，通过测量孔径和误差之间的关系，得出1．5mm孔为引入误差最小的孔；测量真空层压后基材的尺寸稳定性，三种基材能够符合COF技术要求。     

High-Sensitivity Acoustic Molecular Sensors Based on Large-Area,Spray-Coated 2D Covalent Organic Frameworks

2D covalent organic frameworks (2D COFs) are a unique materials platform that combines covalent connectivity, structural regularity, and molecularly precise porosity. However, 2D COFs typically form insoluble aggregates, thus limiting their processing via additive manufacturing techniques. In this work, colloidal suspensions of boronate-ester-linked 2D COFs are used as a spray-coating ink to produce large-area 2D COF thin films. This method is synthetically general, with five different 2D COFs prepared as colloidal inks and subsequently spray-coated onto a diverse range of substrates. Moreover, this approach enables the deposition of multiple 2D COF materials simultaneously, which is not possible by polymerizing COFs on substrates directly. When combined with stencil masks, spray-coated 2D COFs are rapidly deposited as thin films larger than 200 cm² with line resolutions below 50 µm. To demonstrate that this deposition scheme preserves the desirable attributes of 2D COFs, spray-coated 2D COF thin films are incorporated as the active material in acoustic sensors. These 2D-COF-based sensors have a 10 ppb limit-of-quantification for trimethylamine, which places them among the most sensitive sensors for meat and seafood spoilage. Overall, this work establishes a scalable additive manufacturing technique that enables the integration of 2D COFs into thin-film device architectures.     

大型液晶显示用COF带的细节距线路形成

概述了大型液晶显示用COF带的特征和制造技术以及细节距线路形成技术。     

Subjective assessment of floor slipperiness

Measured coefficients of friction of floor surfaces have not been shown to be consistent predictors of slipping and falling. However, human subjects appear to be able to perceive the slipperiness of a floor surface, and to modify their gait to mitigate the effects of slippery surfaces. This study investigated subjective rankings of floor surfaces (ceramic, steel, vinyl, plywood, and sandpaper) and the measured coefficients of friction. In addition, subjects reported a confidence rating on the occurence of a slip at “heel down”. The floor surfaces were selected a priori, to provide a range of slipperiness and subjects appeared to be able to reliably discriminate between those surfaces. Ceramic tile was the most frequently determined as the slippery floor with the high level of confidence ratings, CERTAIN and ALMOST CERTAIN. In other words, the confidence ratings were closely related to the subjective rankings. The higher the subjective rankings were, the higher the confidence ratings were. To prove subjective rankings by the quantitative measure, static coefficients of friction were measured and it appears that subjects were able to relate their sensations to a function of the static coefficient of friction.     

基于制作COF精细线路的液态光致抗蚀液性能研究

卷对卷丝网印刷机在超薄挠性覆铜箔层压板上丝网印刷液态光致抗蚀液,实现COF精细线路的制作。研究了液态光致抗蚀液的感光性能与分辨率力等性能,考察了制作出COF的线路效果。实验结果表明,液态光致抗蚀液网印的针孔数随厚度的减小而增加,液态光致抗蚀剂曝光级数随曝光能量的变化趋势与干膜是一致的,11μm厚液态光致抗蚀剂分辨的最小线路宽达到25μm,满足COF精细线路制作的要求。