共查询到20条相似文献,搜索用时 109 毫秒
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刚挠结合板孔内金属化工艺探讨 总被引:1,自引:1,他引:0
文章对刚挠结合板孔内金属化制作工艺进行探讨,分别对钻孔、去钻污及化学沉镀铜工艺进行陈述,利用实验分析钻孔作业参数对刚挠结合板孔内金属化的重要性,在现有制程条件下以实现刚挠结合板孔内金属化的质量要求。 相似文献
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文章从一个全面的角度阐述了刚挠结合板的制作流程,分析并解决了软硬结合板制作中的技术难点,可以有效的指导该类型产品批量生产,具有较强的市场推广性。 相似文献
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刚挠结合板是近几年PCB行业重点发展的新产品,广泛应用于航空航天、医疗、高端电子产品。作为目前PCB行业中利润最高的产品,全球众多的在PCB行业有重大影响力的PCB制造商都在积极地研发和制造相关产品。然而,由于其与普通的硬板绝然不同的结构,在制造工艺上也存在着不同的地方,特别是有些传统的制作工艺难以解决的问题,也阻碍了它的进一步发展。激光作为一种新型的加工工具,特别是进入21世纪以来,在各行各业都得到了广泛的应用。近来,在PCB设备厂商的积极研发及推动下,激光在PCB行业的应用也越来越广泛。在刚挠结合板的制作中,开盖和外形成型一直是制造过程中的难点,而激光基于自身的特点,在这些制程中相比传统机械加工方式有许多优点,如高效率、高精度、高良品率、挠性便捷的加工方式等。另外,在R-Flex板的制作中,激光还可加工P/P料的异型槽孔。本文将对激光在R-Flex板的制作中的这些应用最前沿的研究成果进行总结和阐述,相信在这些技术的推动下,刚挠结合板一定能够得到更快速的发展和更广泛的应用。 相似文献
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文章着重讲述在刚挠结合板制作过程中,外层为挠板结构设计的刚挠结合板线路及通孔铜厚的实现方法,以及制作过程中制作难点和易产生缺陷的解决途径。 相似文献
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Research on Crucial Manufacturing Process of Rigid-Flex PCB 总被引:3,自引:0,他引:3
WANG Yang HE Wei HE Bo LONG Hai-rong LIU Mei-cai WU Su 《中国电子科技》2006,4(1):24-28
The main characteristics, applications, the emphases of manufacturing process are introduced, and the research of new product of rigid-flex Printed Circuit Board (PCB) is also described. In particular, the plasma desmear process, which is the crucial problems of manufacturing process, is discussed in detail. Samsung 4-layer rigid-flex PCB has been developed successfully, and the qualification rate reaches to 89.4%. 相似文献
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Zhuo Li Rongwei Zhang Kyoung‐Sik Moon Yan Liu Kristen Hansen Taoran Le C. P. Wong 《Advanced functional materials》2013,23(11):1459-1465
Flexible interconnects are one of the key elements in realizing next‐generation flexible electronics. While wire bonding interconnection materials are being deployed and discussed widely, adhesives to support flip‐chip and surface‐mount interconnections are less commonly used and reported. A polyurethane (PU)‐based electrically conductive adhesive (ECA) is developed to meet all the requirements of flexible interconnects, including an ultralow bulk resistivity of ≈1.0 × 10?5 Ω cm that is maintained during bending, rolling, and compressing, good adhesion to various flexible substrates, and facile processing. The PU‐ECA enables various interconnection techniques in flexible and printed electronics: it can serve as a die‐attach material for flip‐chip, as vertical interconnect access (VIA)‐filling and polymer bump materials for 3D integration, and as a conductive paste for wearable radio‐frequency devices. 相似文献
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Cheng Yang Wei Lin Zhongyu Li Rongwei Zhang Haoran Wen Bo Gao Guohua Chen Ping Gao Matthew M. F. Yuen Ching Ping Wong 《Advanced functional materials》2011,21(23):4582-4588
This paper reports the first high‐performance water‐based isotropically conductive adhesives (WBICAs) – a promising material for both electrical interconnects and printed circuits for ultralow‐cost flexible/foldable printed electronics. Through combining surface iodination and in situ reduction treatment, the electrically conductivity of the WBICAs are dramatically improved (8 × 10‐5 Ω cm with 80 wt% of silver); moreover, their reliability (stable for at least 1440 h during 85 °C/85% RH aging) meets the essential requirements for microelectronic applications. Prototyped applications in carrying light emitting diode (LED) arrays and radio frequency identification (RFID) antennas on flexible substrates were demonstrated, which showed satisfactory performances. Moreover, their water‐based character may render them more environmentally benign (no volatile organic chemicals involved in the printing and machine maintenance processes), more convenient in processing (reducing the processing steps), and energy economic (thermally sintering the silver fillers and curing the resin is not necessary unlike conventional ICAs). Therefore, they are especially advantageous for mass‐fabricating flexible electronic devices when coupled with paper and other low‐cost substrate materials such as PET, PI, wood, rubber, and textiles. 相似文献
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Zehong Chen Yijie Hu Ge Shi Hao Zhuo Mohammed Azam Ali Ewelina Jamróz Huili Zhang Linxin Zhong Xinwen Peng 《Advanced functional materials》2023,33(18):2214245
With the increase of environmental pollution and depletion of fossil fuel resources, the utilization of renewable biomass resources for developing functional materials or fine chemicals is of great value and has attracted considerable attention. Nanocellulose, as a well-known renewable nanomaterial, is regarded as a promising nano building block for advanced functional materials owing to its unique structure and properties, as well as natural abundance. Typically, its high mechanical strength, structural flexibility, reinforcing capabilities, and tunable self-assembly behavior makes it highly attractive to fabricate flexible materials for various applications. Herein, the recent progress in the design, properties, and applications of advanced flexible materials from nanocellulose is comprehensively summarized. The preparation and properties of nanocellulose are first briefly introduced and discuss its merits in fabricating flexible materials. Then, various advanced flexible materials from nanocellulose are introduced, and the critical role of nanocellulose in constructing flexible materials is highlighted based on its intrinsic properties. After that, their applications in energy storage, electronics, sensor, biomedical, thermally insulating, photonic devices, etc., are presented. At last, the outlook of the current challenges and future perspectives for developing nanocellulose-derived flexible materials are discussed. 相似文献
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应用于刚挠印制板无铅工艺兼容的不流动性半固化片 总被引:1,自引:1,他引:0
当今电子产品的功能不断增加,随之而来的是对电子产品设计多样化的要求。正是由于这种需求,刚挠结合板以其巨大的技术进步和不断增加的需求而获得关注。这其中的不流动性半固化片是将刚性板与挠性板结合在一起的关键材料,它的主要功能是在刚性材料和挠性材料之间形成可靠性的粘接层,所以对该材料界面性质和功能进行研究。对于不流动性半固化片的应用来说是至关重要的。现在,一种新的基于酚醛固化树脂体系的不流动性半固化片已经被开发出来,这种新型材料显示了优异的耐热性和可靠性。经过热性能分析和热冲击测试,这种新型材料的性能比传统的DICY固化环氧树脂体系材料更加优越。 相似文献
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Jiamin Ding Wenrui Zhao Wenlong Jin Chong-an Di Daoben Zhu 《Advanced functional materials》2021,31(20):2010695
Flexible cooling devices, which aim to fulfill the essential requirement of complex working environments and enable local heat dissipation, have become the cutting-edge area of refrigeration technology. Thermoelectric (TE) material represents a promising candidate for various flexible cooling applications, including wearable personal thermoregulation devices. With the increasing interest in the Peltier effect of conductive polymers and inorganic films on flexible substrates, flexible cooling devices have undergone rapid development. Herein, the fundamental mechanisms, basic parameters, and temperature measurement techniques for evaluating the cooling performance are summarized. Moreover, recent progress on TE materials, such as flexible inorganic and organic materials for Peltier cooling studies, is reviewed. More importantly, insights are provided into the key strategies for high-performance Peltier devices. The final part details the existing challenges and perspectives on flexible TE cooling to inspire additional research interests toward the advancement of refrigeration technology. 相似文献
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介绍了具有可弯曲的和可用于HDI板积层的新材料而生产的阶跃式刚-挠性PCB.这种新材料既可用于HDI的积层上,又可以应用刚性HDI的设计规则进行设计和采用刚性PCB生产技术与工艺进行生产. 相似文献
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尽管柔性显示技术面临性能的挑战,第一款商业化的产品仍计划在2006-2007年度投入市场。 相似文献