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1.
《印制电路信息》2008,(7):71-72
“绿色”PCB生产过程,在高速设计中埋置电容的应用,高密度互连印制板塞孔工艺和填料,用于高速、高密度有机微电子封装中Z方互连的纳米和微米级填充导电胶  相似文献   

2.
介绍了导电胶的基本分类以及导电胶的渗透理论;讨论了各向异性导电胶(ACA)、各向同性导电胶(ICA)、绝缘粘合剂(NCA)在倒装芯片互连结构中的应用;分析了导电胶互连的可靠性。最后展望了导电胶的发展趋势。  相似文献   

3.
纳米科技的快速发展对组装纳米结构单元并实现具有复杂功能系统的技术提出高的要求,而纳米材料的互连是这项技术的基础,也是纳米级产品集成的基础。本文综述了纳米连接领域的最新进展,特别是各种同质和异质纳米材料之间的互连机理。首先,介绍了纳米材料的互连概念,重点论述了在同质纳米材料烧结互连、冷焊互连、辐照互连以及液相环境中的纳米互连的行为过程和连接机理,涉及零维和一维纳米材料;其次,对金属-金属和金属-非金属两种异质纳米材料的互连机理及应用进行论述;最后,针对当前同质和异质纳米材料互连研究现状,指出纳米材料互连研究面临的挑战并分析其发展前景。  相似文献   

4.
概述了含有金属纳米粒子的低温烧结型纳米导电胶及其应用,适用于形成细线化图形等。  相似文献   

5.
导电胶正广泛地应用于电子封装中,例如,裸芯片的粘贴与互连,元器件的固定,以及作热转换和电互连的目的,本文将介绍导电胶应用于电子元器件组装中的最新进展,着重描述各向 异性导电胶(以下称ACA)这种新兴的电子互连材料及其组装工艺,同时介绍导电胶在电子封装领域以及在不久将来的更多产品的应用中所起举足轻重的作用,最后,讨论了发展趋势和存在的问题。  相似文献   

6.
本文介绍了导电胶的组成和特点及其在印制板中的应用,如用于在多层板内层埋入电阻,多层板层间互连,在底板上印刷线路等.阐述了银导电胶和铜导电胶在印制电路板应用中各自的优缺点及其应用的可能性.  相似文献   

7.
随着微电子封装技术的发展,各向异性导电胶作为一种绿色的连接材料,广泛应用于电子产品中。文中主要介绍各向异性导电胶互连器件的粘接原理和影响其可靠性的各种因素,如粘接工艺参数、外界环境的干扰、各向异性导电胶的物理特性等。  相似文献   

8.
概述了积层多层板制造工艺,其特征在于采用导电胶实现层间互连,可以有效地制造微细导线图形,部品安装性和可靠性优良的高密度积层多层板。  相似文献   

9.
4.高密度互连技术(HDI) 此处所说的互连技术是指PCB内层间的互连技术。因此PCB的互连技术可分为传统的孔化电镀技术、直接电镀技术和导电胶技术等。4.1 常规的孔化电镀技术 已有30多年的历史,目前全世界6000多家的PCB厂中采用常规的孔化电镀技术仍占  相似文献   

10.
以银粉为填料的导电性胶粘剂,目前在国内已有相当广泛的应用。据国外资料报道,以银粉为填料的导电胶在粘接金属时存在一定的腐蚀问题,在某种情况下也存在银离子迁移之弊病。导电胶的耐环境性能是导电胶应用中一个相当重要的问题。为此,我们进行了大量的试验,测  相似文献   

11.
Five different types of surfactants were employed for nanoparticle functionalization and the effects of the surfactants on electrical properties of nano silver (Ag)-filled conductive adhesives were investigated. The Ag nanoparticles pretreated with the surfactants were incorporated into isotropic conductive adhesives (ICA) formulations as conductive fillers. By using the surfactants (S3, S4, and S5), the reduced resistivity of the nano Ag-filled adhesives could be achieved with 2×10−4 Θ-cm. The morphology studies showed that the low resistivity resulted from the sintering of nanoparticles.  相似文献   

12.
用于微电子组装的导电胶粘接剂的研究现状   总被引:4,自引:0,他引:4  
综述了当前电子组装业中导电胶粘接剂的研究情况,主要介绍国外正在重点研究的几大类导电胶粘接剂及其组成,与传统锡铅焊料的对比,以及它们的电性能、机械性能、热性能等,并简要介绍其发展趋势。  相似文献   

13.
微电子封装用导电胶的研究进展   总被引:5,自引:0,他引:5  
介绍了导电胶的组成、分类及与传统锡-铅焊料相比导电胶的优点。阐述了导电胶的导电机理、失效机理以及国内外的研究现状。  相似文献   

14.
《Microelectronics Reliability》2014,54(9-10):2017-2022
The attachment and packaging of temperature sensors may be challenging due to their structure and materials. Sensing requires a structure which is open to the environment and the materials often differ from those used in silicon-based electronics. Thus, traditional attachment techniques and materials such as soldering may be inappropriate. Polymer-based electrically conductive adhesives (ECA) are an alternative. The operating environment of a sensor may, however, be very demanding. Very little research data is available on the use of ECAs in challenging conditions, thus restricting their use in many applications. This study tested the behaviour of temperature sensors attached with ECAs onto flexible polyimide (PI) substrates in thermal storage at 200 °C. More than 1000 h of testing without failures were conducted on the ECA sensor structures. Good high temperature reliability therefore seems to be possible with ECAs. However, the PI substrate was observed to be critical to reliability. An adhesive layer used in the PI substrate reacted at the test temperature and severe oxidation of the copper pads and reaction between the materials consequently destroyed the interconnection and caused failures.  相似文献   

15.
导电胶粘剂的研究   总被引:1,自引:0,他引:1  
文章综述了当前电子组装业中导电胶粘剂的研究情况,主要介绍国外正在重点研究的几大类导电胶粘剂及其组成,与传统锡铅焊料的对比,以及它们的电性能、机械性能、热性能等。同时简要介绍其发展趋势。  相似文献   

16.
介绍了ACF的结构、原理、组成、应用及发展前景,详述了导电粒子、粘结剂、添加剂等组分在体系中的作用和对ACF性能的影响,综述了热固性树脂中离子聚合树脂型ACF和自由基聚合树脂型ACF的现状,并指出自由基聚合树脂型ACF是将来的发展趋势。  相似文献   

17.
精细电路连接用紫外光固化各向异性导电胶   总被引:15,自引:0,他引:15  
为适应高密度超细线路连接的需要,研究了紫外光固化各向异性导电胶。得到了可以用UV(紫外光)有效固化的各向异性导电胶(ACA)。通过对固化过程和应用于氧化铟锡连接实验的分析,研究了各组分在体系中的作用和添加量对导电胶的连接性能和导电性能的影响。结果表明,紫外光固化各向异性导电胶为液晶显示(LCD)和电致发光显示(ELD)技术提供了一种新的连接方式。  相似文献   

18.
国外微电子组装用导电胶的研究进展   总被引:7,自引:1,他引:6  
介绍导电胶的组成、分类、较之于传统共晶锡铅焊料的优点以及导电胶的研究现状。重点阐述国外在导电胶导电机理研究、可靠性研究及新型高性能导电胶研制方面的现状和进展。  相似文献   

19.
各向异性导电胶粘接可靠性研究进展   总被引:12,自引:0,他引:12  
介绍各向异性导电胶导电机理和粘接工艺,以及影响它的粘接可靠性因素和最佳参数的研究,如粘接温度、固化时间、粘接压力、粒子含量等。对各向异性导电胶粘接可靠性中的开路、短路、接触电阻与粘接压力和温度循环的关系进行了讨论,并介绍了各向异性导电胶可靠性的理论计算模型。  相似文献   

20.
Soldering processes using tin/lead solder are standard interconnection technologies for electronic manufacturing. These processes are currently under threat from the Waste Electrical and Electronic Equipment and the Restriction of Hazardous Substances (RoHS) environmental directives, issued by the European Union in 2000. These directives explain that solder is to be free from lead by 1986, as lead has been recognized by the European Union as an environmentally harmful material. One solder alternative that has been investigated by the electronics industry is the area of electrically conductive adhesives (ECAs). This paper outlines the electrical and mechanical analysis of two isotropic conductive adhesives where the main properties of joint resistance and adhesive strength were examined before and after different environmental treatments. Joint resistance was measured with a four-probe tester and adhesive strength was examined with the use of shear testing. Cross-sectional and scanning electron microscopy analyses were used to determine problems such as oxidation and moisture absorption that may have an affect on the adhesive properties of the connection. An experimental design was carried out to examine the adhesives on a standard production line. Taguchi analysis was used to determine the build parameters required to produce an optimal adhesive joint. The results show that although ECAs can pass a functionality test, the electrical properties of ECAs are inferior to that of solder with ECAs having a high joint resistance. They also exhibit poor mechanical strength when shear or drop tested and illustrate that current visual inspection techniques used to examine solder joints are not applicable to conductive adhesives.  相似文献   

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