系统集成封装技术

系统集成封装技术(SiP:System in Package)是近几年来为适应模块化开发系统硬件的需求而出现的封装技术,在已经开始的新一轮封装技术发展中将发挥重要作用.SiP利用已有的电子封装和组装工艺,组合多种集成电路芯片与无源器件,封闭模块内部细节,降低系统开发难度,具有成本低、开发周期短、系统性能优良等特点,目前已经在通信系统的物理层硬件中得到广泛应用.     

微系统三维(3D)封装技术

文章论述塑料三维(3D)结构微系统封装技术相关问题,描述了把微电机硅膜泵与3D塑料密封垂直多芯片模块封装(MCM-V)相结合的微系统集成化。采用有限元技术分析封装结构中的封装应力,根据有限元设计研究结果,改变芯片载体结构,降低其发生裂纹的危险。计划采用板上芯片和塑料无引线芯片载体的替代低应力和低成本的3D封装技术方案。     

集成两路射频SiP发射器的设计和研究

随着移动通信和其它电子应用领域的不断进步,系统集成需求日益紧迫。除了可以应对系统性能、功能、成本和小型化的更高要求,系统级封装(SiP)在降低开发成本、实施灵活设计、缩短开发周期,和集成异质芯片上也有突出优势。这篇文章介绍了一个可用于手机基站系统的双通路发射系统SiP模块的开发。我们用计算模拟方法辅助优化设计,并成功制造和验证了SiP模块。SiP为内嵌电磁干扰屏蔽罩的12mmx12mmx1.9mm的多层栅格阵列封装(LGA)。各种射频信号性能均通过测试,包括严格的隔离度要求。电磁屏蔽测试和计算模拟结果高度吻合。最后,文章介绍了一种高效的计算模拟方法,极大地缩短了计算模拟的时间,并对未来射频SiP开发将提供有力帮助。     

Linear推出高性能微型模块接收器子系统

Linear公司推出采用系统级封装(SiP)的信号链路接收器模块系列的首款产品LTM9001,该系列产品采用了Linear公司突破性的微型模块(μModule)封装技术。这个新的集成接收器子系统系列专为接通RF和数字领域设计,具更高易用性,并缩短了产品上市时间。LTM9001是一款可半定制的IF/基带接收器子系统,包括采样率达160Msps的高性能16位模数转换器(ADC)、     

功率模块封装结构及其技术

本文从封装角度评估功率电子系统集成的重要性。文中概述了多种功率模块的封装结构形式及其主要研发內容。另外还讨论了模块封装技术的一些新进展以及在功率电子电路系统集成中的地位和作用。     

智能卡非接触模块封装技术

简要介绍了IC封装中智能卡(Smart Card)模块封装这一专门领域总体的概况。对智能卡模块封装领域中非接触模块(MOA4)封装中出现的常见问题进行探讨并给出相应部分可行的解决方案。     

射频系统的系统级封装

论述了高速数据处理和高密度封装技术的特点及对射频系统封装的特殊要求,介绍了射频系统封装的基本技术和一种包含LNA、PPA、滤波器及天线开关的射频系统级封装模块.概述了射频系统级封装的设计、仿真和测试的方法和步骤.     

模块封装将通过半导体工艺技术而改变

过去通常直接组装到PCB板上的元器件,现在都集成到小型的单一封装基板——模块基板上,所构成的SiP(系统级封装)或RF模块等各种各样的功能模块已经越来越多地应用到电子设备中。模块基板是用于连接半导体器件和PCB板的部件,其尺寸、形状同封装的大小相当。具体来说,模块基板包括BGA基板、SiP及MCM(多芯片模块)基板、TAB(tape-automated bonding)基     

采用确好芯片开发MCP闪存系统

最近在手机存储器系统开发者中产生了一个增长的趋势，他们把管芯垂直堆叠在一个封装卦壳里——通常称为MCP（Multichip Packaging，多芯片封装)．设计者采用此方法去节约小巧的印刷电路板空间．这种方法在小型化的终端用户产品(比如移动电话)上应用日益广泛；这些设计采用多层布线，多模块，或者多层布线和多模块相结合的办法对各个不同厂商生产的存储器管芯进行多芯片或系统级封装。     

一种用于胎压传感器的新型系统级封装技术

TPMS IC是TPMS系统模块的关键核心器件,需要采用系统级封装(SiP)技术。对TPMS IC的一种新型SiP封装技术作了研究分析。在引线框架上引入电路板中介层,改善了芯片间电气互连与分布,增大了引入薄膜电阻电容元件的设计弹性。采用预成型模制部分芯片的封装技术,满足了IC与MEMS芯片不同的封装要求,还增强了SiP产品的可测试性和故障可分析性。采用敞口模封、灌装低应力弹性凝胶和传感器校准测试相结合的方法有效避免封装应力对MEMS压力传感器的影响。     

3D集成的发展现状与趋势

三维集成技术的发展是技术与理念的革新过程,本文根据集成封装技术的的发展历程,提出三维集成的发展特点,阐述理念的突破如何引导技术发展,以此为主线,可以更有逻辑性的了解三维集成的发展历史与趋势.封装从器件级向系统级的发展促使了多种系统级封装概念的出现;垂直堆叠方式推动互连长度不断降低;与晶圆级封装的结合可以大幅度降低成本;从同质向异质的转变则集成了多种学科、材料与技术,是实现复杂的系统的基础.     

Trends of power semiconductor wafer level packaging

A review of recent advances in power wafer level electronic packaging is presented based on the development of power device integration. The paper covers in more detail how advances in both semiconductor content and power advanced wafer level package design and materials have co-enabled significant advances in power device capability during recent years. Extrapolating the same trends in representative areas for the remainder of the decade serves to highlight where further improvement in materials and techniques can drive continued enhancements in usability, efficiency, reliability and overall cost of power semiconductor solutions. Along with next generation wafer level power packaging development, the role of modeling is a key to assure successful package design. An overview of the power package modeling is presented. Challenges of wafer level power semiconductor packaging and modeling in both next generation design and assembly processes are presented and discussed.     

Process-based cost modeling of photonics manufacture: the cost competitiveness of monolithic integration of a 1550-nm DFB laser and an electroabsorptive modulator on an InP platform

The monolithic integration of components holds promise to increase network functionality and reduce packaging expense. Integration also drives down yield due to manufacturing complexity and the compounding of failures across devices. Consensus is lacking on the economically preferred extent of integration. Previous studies on the cost feasibility of integration have used high-level estimation methods. This study instead focuses on accurate-to-industry detail, basing a process-based cost model of device manufacture on data collected from 20 firms across the optoelectronics supply chain. The model presented allows for the definition of process organization, including testing, as well as processing conditions, operational characteristics, and level of automation at each step. This study focuses on the cost implications of integration of a 1550-nm DFB laser with an electroabsorptive modulator on an InP platform. Results show the monolithically integrated design to be more cost competitive over discrete component options regardless of production scale. Dominant cost drivers are packaging, testing, and assembly. Leveraging the technical detail underlying model projections, component alignment, bonding, and metal-organic chemical vapor deposition (MOCVD) are identified as processes where technical improvements are most critical to lowering costs. Such results should encourage exploration of the cost advantages of further integration and focus cost-driven technology development.     

An approach to deal with packaging in power electronics

Current packaging technology in power electronics is based on assembling pre-manufactured discrete components. Each component consists of a number of parts, manufactured in a variety of manufacturing processes. This has resulted in a diversity of construction parts and mutually incompatible manufacturing processes in a typical power electronic converter and has brought power electronics to the edge where it becomes extremely difficult to reduce the cost and size of power electronic converters. This also makes integration of power electronic converters difficult. In this paper, we present a way to improve the physical construction of power electronic converters by increasing level of integration and using multifunctional construction parts. integration and packaging are two important aspects of physical construction of power electronic converters. Both of them and their mutual relationship are discussed in the paper. Three quantities intended to evaluate integration level and volumetric utilization namely functional elements integration level, K/sub I/; packaging elements integration level K/sub P/; and volumetric packaging efficiency /spl eta//sub v/ are introduced. Based on these values, a number of techniques to increase the integration level are presented. A design process in the form of a flowchart intended to implement these techniques in concrete design cases is presented.     

Status and prospects for phosphor-based white LED packaging

The status and prospects for high-power, phosphor-based white light-emitting diode (LED) pack-aging have been presented. A system view for packaging design is proposed to address packaging issues. Four aspects of packaging are reviewed: optical control, thermal management, reliability and cost. Phosphor materials play the most important role in light extraction and color control. The conformal coating method improves the spatial color distribution (SCD) of LEDs. High refractive index (RI) encapsulants with high transmittance and modified surface morphology can enhance light extraction. Multi-phosphor-based packaging can realize the control of correlated color temperature (CCT) with high color rendering index (CRI). Effective thermal management can dissipate heat rapidly and reduce thermal stress caused by the mismatch of the coefficient of thermal expansion (CTE). Chip-on-board (COB) technology with a multi-layer ceramic substrate is the most promising method for high-power LED packaging. Low junction temperature will improve the reliability and provide longer life. Advanced processes, precise fabrication and careful operation are essential for high reliability LEDs. Cost is one of the biggest obstacles for the penetration of white LEDs into the market for general illumination products. Mass production in terms of CoB, system in packaging (SIP), 3D packaging and wafer level packaging (WLP) can reduce the cost significantly, especially when chip cost is lowered by using a large wafer size.     

Integrated RF architectures in fully-organic SOP technology

Future wireless communications systems require better performance, lower cost, and compact RF front-end footprint. The RF front-end module development and its level of integration are, thus, continuous challenges. In most of the presently used microwave integrated circuit technologies, it is difficult to integrate the passives efficiently with required quality. Another critical obstacle in the design of passive components, which occupy the highest percentage of integrated circuit and circuit board real estate, includes the effort to reduce the module size. These issues can be addressed with multilayer substrate technology. A multilayer organic (MLO)-based process offers the potential as the next generation technology of choice for electronic packaging. It uses a cost effective process, while offering design flexibility and optimized integration due to its multilayer topology. We present the design, model, and measurement data of RF-microwave multilayer transitions and integrated passives implemented in a MLO system on package (SOP) technology. Compact, high Q inductors, and embedded filter designs for wireless module applications are demonstrated for the first time in this technology.     

多层陶瓷封装外壳的微波设计

随着微电子器件的发展，集成度越来越高，不断向高频、高功率应用迈进，对其封装技术的发展也提出了更高要求。本文以一个场效应管封装外壳的微波设计为例，探讨了微波三维结构仿真技术在封装外壳设计上的应用，证明对封装外壳进行合理的微波设计，可以有效地提高器件的微波性能。     

电子封装技术发展现状及趋势

现今集成电路晶圆的特征线宽进入微纳电子时代,而电子产品和电子系统的微小型化依赖先进电子封装技术的进步,封装技术已成为半导体行业关注的焦点之一。主要介绍了近年来国内外出现的有市场价值的封装技术,详细描述了一些典型封装的基本结构和组装工艺,并指出了其发展现状及趋势。各种封装方法近年来层出不穷,实现了更高层次的封装集成,因而封装具有更高的密度、更强的功能、更优的性能、更小的体积、更低的功耗、更快的速度、更小的延迟、成本不断降低等优势,其技术研究和生产工艺不可忽视,在今后的一段时间内将拥有巨大的市场潜力与发展空间,推动半导体行业进入后摩尔时代。     

系统模块(SiP)和三维封装(3D)在移动通讯中的应用

电子封装业界正遭受着前所未有的来自手机和其他移动通讯终端设备挑战。在这一领域里,IC封装的关键是尺寸微型化,缩减成本和市场时机。这一挑战的背后隐含着手机技术发展的两大趋势:系统模块化和日益增长的复杂性及功能。越来越多的功能正在被组合到手机上即PDA、MP3、照相机、互联网等等。功能的增加需要靠模块化来实现,而模块化又促进了更多功能的组合。同时,模块化使得移动通讯终端设备得以微型化、降低成本和缩短设计周期。业界越来越多地感受到整体射频模块和通讯模块解决方案的必要性。这些整体模块把手机设计师从电路设计的细节中解脱出来,从而能专著于高层的手机应用和系统的设计。为了满足上诉移动通讯产品的苛刻要求,大量的新兴电子封装技术和封装产品应运而生。最引人注目的例子在于对系统模块穴SiP雪和三维穴3D雪封装的重点资金和技术投入。这两项先进封装技术有着各自不同的特征和应用范围。总体介绍先进封装技术在移动通讯中的应用,重点讨论电子封装材料和工艺所面临的挑战和最新发展趋势。对移动通讯带来的新一轮集成化及其所产生的潜在供应链问题也做了适当的讨论。     

基于PLC的全自动包装码垛机器人控制系统设计

近年来我国的劳动力成本在逐年的增长,用工问题已经成为加工企业的一大问题,为了促进加工企业的发展,减轻人力和物力的成本,同时提高生产效率,总体上降低加工企业的生产成本,在包装码垛机器人的基础上,进一步开发和设计一种基于PLC的全自动包装码垛机器人控制系统,实现实时对包装码垛机器人的控制与监督,对包装码垛机器人的工作流程以及工作性质进行针对性的软件编程和设计,以增加包装码垛的实用性以及控制系统的稳定性,与此同时还要保证其控制系统有一定的扩展空间,以便根据包装码垛机器人在日常工作的实际需要进行有效的改进,切合实际工作内容的设计对于增加生产效率和降低生产成本都是极为关键的存在。