康宁发布超薄柔性玻璃

康宁Willow玻璃将带来更薄的新型应用产品,并将掀起显示制造行业的变革康宁公司已发布康宁Willow玻璃,这是一款超薄柔性玻璃,它可能会为下一代消费电子产品的外观和形式带来变革。公司在波士顿国际资讯显示学会的显示产品展会上发布了这一消息。康宁Willow玻璃将应用于轻薄且成本高效的应用产品,包括当前的超薄显示器和未来的智能表面。这种玻璃的薄度、强度和柔性使其有可能让显示器围绕着一个设备或结构"卷"     

柔性有机电致发光器件的寿命

综述了柔性有机电致发光器件(FOLED)的研究现状和发展趋势;针对提高其寿命问题的研究,选择和比较了聚合物、金属箔片、超薄玻璃3种柔性衬底材料的优缺点及发展概况;结合本课题组的实验分析,说明设计并选择合理的器件结构、发光材料和阴极材料对延长器件的使用寿命非常有效;提高FOLED寿命的另一重要步骤是减少水蒸汽和氧气向器件内部的渗透,最后也简介了以聚合物和超薄玻璃为衬底材料的器件封装方法。     

柔性OLED显示及封装技术的研究

有机发光二极管(OLED)是最具发展潜力的显示技术之一,而器件的使用寿命短的缺点影响了OLED的发展.有机电致发光器件在柔性衬底上的制备是下一代显示技术发展的重要方向.介绍了柔性OLED及封装技术和金属薄片、聚合物基片及超薄玻璃—聚合物系统的特点,OLED器件的有效封装可以延长器件的寿命.     

有机电致发光器件封装技术的研究进展

有机电致发光显示器件(OLED)被认为是最有潜力的平板显示器件之一.由于OLED具有低驱动电压、高亮度、宽视角及超薄等优点,逐渐成为各国研究的热点.OLED对水分和氧气都非常敏感,进入到器件内部的水分和氧气会严重影响器件的寿命,因而影响OLED的产业化发展.OLED器件的有效封装能延长器件的寿命.综述了玻璃衬底、柔性衬底OLED封装技术的研究现状,以及不同封装的优缺点.     

超薄柔性等离子体显示板的研究

超薄柔性等离子体显示板(Plasma Display Panel,PDP)的概念是在目前电子纸技术的出现和现有荫罩式PDP(SMPDP)的技术基础上提出的,超薄柔性PDP采用超薄玻璃取代荫罩式PDP中的钙钠玻璃,使柔性显示有了可能性.因为超薄玻璃本身的柔性,在制作工艺过程中可能会引起机械形变,进而对电场分布,以及放电特性方面产生一定的影响.因此有必要对超薄玻璃的机械形变进行研究.本文主要从超薄玻璃的机械形变和放电特性两方面对超薄柔性PDP的可行性进行了研究.     

柔性OLED的封装技术及其专利申请分析

柔性OLED是指将OLED衬底选择柔性衬底,如聚合物、金属和超薄玻璃。空气中的水汽和氧气等成分对柔性OLED的寿命影响很大,因此柔性OLED的封装格外重要。而柔性OLED的封装方法主要分为盖板封装和薄膜封装,薄膜封装又分为单层薄膜和多层薄膜封装。本文从专利文献的视角对柔性OLED的封装技术进行了全面的统计分析,总结了与柔性OLED封装相关的国内外专利的申请趋势、主要申请人分布以及主要技术原创国申请量分布情况。     

功率LED柔性封装结构的设计与热特性分析

根据功率LED的柔性封装要求,提出了基于贴片式(SMD)封装的功率型LED柔性封装结构。对各层结构进行了优化设计,采用有限元分析(FEA),模拟了柔性封装结构LED的热场分布。对比研究了柔性LED与传统封装结构LED的热特性,并对弯曲状态下柔性衬底材料对芯片的应力进行了分析。结果表明,采用金属Cu箔衬底的柔性封装结构,其散热特性较好;Cu/超薄玻璃复合衬底替代Cu箔衬底,可以减少弯曲的应力,减少幅度达到2.5倍,散热特性基本相同。SMD柔性封装的LED不仅具有较好的热稳定性,且具有柔性可挠曲特性,其应用潜力很大。     

OLED柔性衬底封装材料研究进展

有机电致发光器件在柔性衬底上的制备是下一代显示技术发展的重要方向。根据柔性显示对封装材料的要求,综述了柔性衬底材料的种类及研究应用现状,重点介绍了聚合物柔性衬底材料的研究进展。     

玻璃和柔性衬底上氧化铟锡薄膜特性的对比研究

对采用磁控溅射方法生长在玻璃和柔性聚对苯二甲酸乙二醇酯(PET)塑料上的氧化铟锡(ITO)薄膜的结构、光学和电学特性进行了对比研究.在两种不同的衬底上均得到了不分相的、高质量的多晶ITO薄膜,其中生长在玻璃衬底上的ITO薄膜(002)衍射峰的半峰宽为0.24°,生长在PET衬底上的为0.28°.两种样品在可见光区都具有很高的透过率,其中玻璃衬底上生长的薄膜的透过率约为92%,PET上生长的薄膜的透过率高达87%.两种薄膜均具有良好的导电性,玻璃衬底上薄膜的电阻率为4.2×10-4Ω·cm,柔性PET衬底上薄膜的电阻率为4.7×10-4Ω·cm.实验结果证明,完全可以采用磁控溅射的方法在柔性衬底上生长出高质量的ITO薄膜.     

玻璃和聚酰亚胺衬底上磁控溅射沉积的ZnO:Al透明导电膜的结构、电学和光学性能(英文)

利用射频磁控溅射方法在玻璃和聚酰亚胺膜(PI)衬底上沉积了氧化铝质量分数为2%的掺铝氧化锌透明导电薄膜(ZnO∶Al)。系统地研究了不同衬底材料对薄膜的结构、电学以及光学性能的影响。分析表明,衬底材料对薄膜的结晶性和电学性能有较大的影响,对可见光透射率却影响不大。X射线衍射(XRD)分析得出所有的ZnO∶Al具有良好的c轴择优取向性,在可见光区(400～800nm)两种衬底上的薄膜都达到了85%的透射率。玻璃衬底上的薄膜呈现出更强的(002)衍射峰及相对更小的半峰全宽(FWHM),薄膜电阻率达到了2.352×10-4Ω.cm。电镜分析表明,相对于PI上的ZnO∶Al膜,玻璃上ZnO∶Al膜表面有更致密的微观结构及更大的晶粒尺寸。PI衬底上的ZnO∶Al膜也有相对较好的电、光学性能,其中电阻率达到了6.336×10-4Ω.cm,而且由于PI衬底柔性可弯曲,使得它适于在柔性太阳电池和柔性液晶显示中做窗口层材料及透明导电电极。玻璃上的ZnO∶Al膜则可应用在平板显示和太阳电池技术中。     

用于低功耗、非刚性平面应用的柔性AMOLED器件

采用磷光OLED技术设计的柔性AMOLED器件极其适合用于低功耗、非刚性平面的全彩色影像显示应用。以柔性基片取代玻璃基板和采用薄膜封装可以为便携式应用带来更轻、更薄和不易破碎等吸引人的特点。不断增强的柔性和低功耗正为OLED技术带来一系列革命性的机会。     

The dawn of organic electronics

Organic semiconductors are poised to transform the world of circuit and display technology. Major electronics firms such as Philips and Pioneer, and smaller companies such as Cambridge Display Technology, Universal Display, and Uniax, are betting that the future holds tremendous opportunity for the low cost and sometimes surprisingly high performance offered by organic electronic and optoelectronic devices. Using organic light-emitting devices (OLEDs), organic full-color displays may eventually replace liquid-crystal displays (LCDs) for use with laptop and even desktop computers. Such displays can be deposited on flexible plastic foils, eliminating the fragile and heavy glass substrates used in LCDs, and can emit bright light without the pronounced directionality inherent in LCD viewing, all with efficiencies higher than can be obtained with incandescent light bulbs     

柔性塑料基板液晶镜片

普通液晶显示都是基于玻璃板的平板显示器．但用于眼镜不符合行业标准。本文的工作是在河北冀雅液晶显示有限公司完成的。使用柔性塑料基板来制作液晶镜片,替代原有的玻璃材料。利用液晶的性质来改变光强,利用塑料基板可弯曲的特性实现眼镜片的曲率。此产品的成功研发具有先进性。最后通过实验数据,对比分析了柔性塑料基板镜片和玻璃基板镜片的光透过率,对比度,响应时间等电光特性。     

Roll-up displays: fact or fiction?

Many companies have undertaken the challenge of creating flexible displays but the perfect specimen is still some way off. This article looks at the numerous technological challenges involved in making a display flexible, including the thickness of the display relative to its rigidity, and finding a set of technologies that can combine to create a large, stable matrix of individually addressable pixels that will flex. In addition, a number of flexible display technologies under development are described, including liquid crystal displays (LCDs), electrophoretic light-controlling material-based displays, plastic semiconductor backplanes and semiconductors based on organic polymers for plastic electronics, organic light emitting diode (OLED) displays, organic thin film transistor (TFT) technology, an enhanced ink jet-based patterning technique for organic polymer materials, and the development of new emissive materials to go with the flexible backplanes.     

Hydrogel‐Enabled Transfer‐Printing of Conducting Polymer Films for Soft Organic Bioelectronics

The use of conducting polymers such as poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) for the development of soft organic bioelectronic devices, such as organic electrochemical transistors (OECTs), is rapidly increasing. However, directly manipulating conducting polymer thin films on soft substrates remains challenging, which hinders the development of conformable organic bioelectronic devices. A facile transfer‐printing of conducting polymer thin films from conventional rigid substrates to flexible substrates offers an alternative solution. In this work, it is reported that PEDOT:PSS thin films on glass substrates, once mixed with surfactants, can be delaminated with hydrogels and thereafter be transferred to soft substrates without any further treatments. The proposed method allows easy, fast, and reliable transferring of patterned PEDOT:PSS thin films from glass substrates onto various soft substrates, facilitating their application in soft organic bioelectronics. By taking advantage of this method, skin‐attachable tattoo‐OECTs are demonstrated, relevant for conformable, imperceptible, and wearable organic biosensing.     

Active-Matrix Amorphous-Silicon TFTs Arrays at 180$^circhboxC$on Clear Plastic and Glass Substrates for Organic Light-Emitting Displays

An amorphous-silicon thin-film transistor (TFT) process with a 180$^circhboxC$maximum temperature using plasma-enhanced chemical vapor deposition has been developed on both novel clear polymer and glass substrates. The gate leakage current, threshold voltage, mobility, and on/off ratio of the TFTs are comparable with those of standard TFTs on glass with deposition temperature of 300$^circhboxC$–350$^circhboxC$. Active-matrix pixel circuits for organic light-emitting displays (LEDs) on both glass and clear plastic substrates were fabricated with these TFTs. Leakage current in the switching TFT is low enough to allow data storage for video graphics array timings. The pixels provide suitable drive current for bright displays at a modest drive voltage. Test active matrices with integrated polymer LEDs on glass showed good pixel uniformity, behaved electrically as expected for the TFT characteristics, and were as bright as 1500$hboxcd/hboxm^2$.     

单玻璃基板与各向异性聚合物膜的IPS-LCD的应用

介绍了一种使用单片玻璃基板和各向异性聚合物膜的轻型、共面转换液晶显示(IPS-LCD)技术。液晶分子由伸长的聚合物膜内的颗粒排列。各向异性聚合物膜的取向性能与聚酰亚胺(PI)摩擦层相当。良好的液晶取向性能使新器件的对比度(514:1)、驱动电压和响应时间都能够与双玻璃基板LCD相比拟。这种各向异性膜也能作为拓宽视角的相位补偿膜来使用。该技术特别引人注目之处在于制作单基板显示器,同时它也具有实现双层宾主显示和IPS-LCD柔性显示的潜在应用。     

柔性OLED封装方法的研究靠

有机电致发光二极管与其他显示器件相比,最大的优势就是可以制备在聚合物基板上,实现柔性显示,但聚合物对水、氧的阻挡能力远不如玻璃.因此,为了延长柔性OLED器件寿命,就要在柔性器件的基板和盖板上制作薄膜阻挡层,进行有效的封装.介绍了OLED的封装方式的进展,并提出了一些柔性OLED的封装方案.     

IPS-LCD using a glass substrate and an anisotropic polymer film

A lightweight in-plane-switching liquid crystal display (IPS-LCD) using a single glass substrate and an anisotropic polymeric film is demonstrated. The liquid crystal molecules are aligned by the elongated polymer grain of the film. The alignment capability of the anisotropic film is comparable to a buffed polyimide layer. Compared to the LCD using two glass substrates, our new device exhibits a comparable contrast ratio (/spl sim/514:1), driving voltage, and response time because of good LC alignment. Such an anisotropic film can also function as a phase compensation film for widening the viewing angle. This technology is particularly attractive for making single-substrate displays and also has potential for a double-layered guest-host display and a flexible display using IPS LCDs.