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随着集成电路日新月异的发展,当半导体器件工艺进展到纳米级别后,传统的二维领域封装已渐渐不能满足电路高性能、低功耗与高可靠性的要求。为解决这一问题,三维封装成为了未来封装发展的主流。文章简要介绍了三维封装的工艺流程,并重点介绍了硅通孔技术的现阶段在CSP领域的应用,以及其未来的发展方向。 相似文献
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本文主要从专利视角对硅通孔在LED封装中的应用进行了统计分析,总结了与硅通孔在LED封装中应用相关的国内外专利的申请趋势、主要申请人分布,并对重点技术的发展路线进行了梳理. 相似文献
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采用硅通孔(TSV)技术的三维堆叠封装,是一种很有前途的解决方案,可提供微处理器低延迟,高带宽的DRAM通道.然而,在3D DRAM电路中,大量的TSV互连结构,很容易产生开路缺陷和耦合噪声,从而导致了新的测试挑战.通过大量的模拟研究.本文模拟了在三维DRAM电路的字线与位线中出现的TSV开路缺陷的故障行为,它作为有效... 相似文献
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在集成电路的制造阶段延续摩尔定律变得越发困难,而在封装阶段利用三维空间可以视作对摩尔定律的拓展。硅通孔是利用三维空间实现先进封装的常用技术手段,现有技术中对于应用于CMOS图像传感器件封装的圆台硅通孔,采用的是在顶部不断横向刻蚀的方式实现的,不利于封装密度的提高,且对于光刻设备的分辨率有一定的要求。针对现有技术中的问题,一种严格控制横向刻蚀尺寸(仅占原始特征尺寸的3%~12%)的圆台硅通孔刻蚀方法被研究探索出来。该方法通过调节下电极功率(≤30 W),获得了侧壁角度可调(70°~88°)、通孔底部开口尺寸小于光刻定义特征尺寸的圆台硅通孔结构。这一方法有望向三维集成电路领域推广,有助于在封装阶段延续摩尔定律。 相似文献
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芯片叠层封装能够大幅提高集成度,硅通孔技术是集成电路三维封装的发展方向.但是随着封装密度增加功率密度增大,对散热的要求也愈加迫切.对芯片散热的最新进展进行了介绍,着重研究了微管液体冷却技术,在讨论了相关模型的基础上,对微管的制备方法进行了分析. 相似文献
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This study aims at developing an advanced clamped through-silicon via (C-TSV) interconnection technology for three-dimensional (3D) chip-to-chip or chip-to-wafer packaging. The special features of the C-TSV technology include (1) the proposal of metal caps on the pads of the chip to form a nearly symmetric double-side-metal-cap structure that firmly clamps the vias on the chip, (2) the employment of a temporary conductive layer on the active side of the wafer as a seed metal layer during the electro-plating of metal caps, and (3) the introduction of a “via first redistribution” (VFR) concept in the C-TSV process for heterogeneous 3D integration and maximal performance. Basically, the metal caps can act as a bonding layer for 3D chip stacking and also a protection stopper for backside drilling. The blind vias are created using a proven low-cost laser drilling process through the wafer backside with a laminated insulation layer on the via-hole wall. Unlike the typical TSV process, the present technology has no need to carry out the seed layer deposition and photo processes to facilitate the via-hole filling with metal through electro-plating, thus being more cost-effective. Besides, because of the structural symmetry and also the tightly-clamped via structure, it can potentially yield better bonding reliability for stacked chip bonding. To demonstrate the effectiveness of the C-TSV structure for wafer-level 3D integration, feasibility study of the implementation of the novel process and mechanics comparisons of these two 3D chip stacking structures under thermal loading through finite element (FE) stress simulation are made. At last, both the thermal humidity (TH) test of 85 °C/85%RH and the 288 °C solder dipping test are carried out to demonstrate the interconnect reliability and the interface quality of the 3D interconnect technology. 相似文献
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三维激光扫描技术是近年来国际上测绘行业快速发展起来的一项高新技术,其原理是通过激光测距原理(包括脉冲激光和相位激光)快速的扫描被测物体,整个过程不需要反射棱镜便可以直接获得高精度的扫描点云数据,即时快速的测出目标物体的三维空间坐标值.本文主要针对目前新疆地区该项技术的发展及应用现状展开分析,以期该技术可以在更多领域发挥其作用. 相似文献
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A unique substrate MCPM (Mitsubishi Copper Polyimide Metal-base) technology has been developed by applying our basic copper/polyimide
technology.1 This new substrate technology MCPM is suited for a high-density, multi-layer, multi-chip, high-power module/package, such
as used for a computer. The new MCPM was processed using a copper metal base (110 × 110 mm), full copper system (all layers)
with 50-μm fine lines. As for pad metallizations for the IC assembly, we evaluated both Ni/Au for chip and wire ICs and solder
for TAB ICs. The total number of assembled ICs is 25. To improve the thermal dispersion, copper thermal vias are simultaneously
formed by electro-plating. This thermal via is located between the IC chip and copper metal base, and promotes heat dispersion.
We employed one large thermal via (4.5 mm?) and four small vias (1.0 mm?) for each IC pad. The effect of thermal vias and/or base metal is simulated by a computer analysis and compared with an alumina
base substrate. The results show that the thermal vias are effective at lowering the temperature difference between the IC
and base substrate, and also lowering the temperature rise of the IC chip. We also evaluated the substrate’s reliability by
adhesion test, pressure cooker test, etc. 相似文献
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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。 相似文献
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This study uses electrochemical techniques with a rotating disk electrode (RDE) to investigate the effects of Cu2+ concentration and additives on electrodeposition of through-silicon vias (TSV). The plating bath with both PEG and SPS has an obvious suppression effect on Cu-RDE with a thin boundary layer from −350 to −634 mV (vs. Hg/Hg2SO4) and a wide potential range for the via-filling operation. The impedance and potentiodynamic scans show the adsorption of small molecule SPS is more stable than PEG, and the effect of PEG or SPS depends on the thickness of boundary layer obviously only in Tafel region. This study obtained high filling powers in both deep and shallow vias using the plating bath of 50 g/L Cu2+, and TSV filling in wafer-segment scale, with 20 μm via diameter and 100 μm via depth, verifies the performance predicted by the electrochemical techniques. 相似文献
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为了实现高分辨率集成成像三维显示,设计了一种基于数码相机实拍的集成成像高分辨率图像采集系统,给出3D图像的深度范围;对实、虚显示模式的图像分辨率进行分析研究。基于集成成像原理用数码相机进行高分辨率的图像采集,由微透镜阵列节距、焦距、物距等参数计算出显示分辨率与显示深度,结合计算机进行图像处理,通过高精度打印图像并与微透镜阵列粘合的方法进行实验验证,给出拍摄参数和显示参数并与传统视差显示模式和集成成像的聚焦显示模式进行比较。在参数匹配较好的情况下,集成成像实、虚显示模式的图像分辨率优于聚焦显示模式和传统视差显示模式,并可采用较宽节距的微透镜阵列,验证了集成成像实、虚显示模式下可实现高分辨率的三维显示。通过集成成像高分辨率图像采集,并以实模式、虚模式显示模式,可获得高分辨率的集成成像三维显示。 相似文献