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    • 152. 发明申请
    • APPARATUS AND METHOD FOR REMOVING INTERCONNECTIONS
    • 用于移除互连的装置和方法
    • US20020162880A1
    • 2002-11-07
    • US09850350
    • 2001-05-07
    • INTERNATIONAL BUSINESS MACHINES CORPORATION
    • Raymond A. JacksonScott A. BradleyStephen A. DeLaurentisMario J. InterranteDavid C. Linnell
    • B23K001/018B23K028/00B23K005/22
    • B08B1/008B08B7/0071H01L21/4864H05K3/3436H05K3/3457
    • A method for removing at least one molten or solid structure from a surface including: placing the surface with the at least one molten or solid structure in a fixture; disposing said wiper assembly acted on by a bias proximate the at least one molten or solid structure; retaining the wiper assembly in a first position with a device having a first temperature point level equivalent to or higher than a second melting point level of the at least one molten or solid structure; and raising the temperature of the fixture to the first temperature point level; wherein the at least one molten or solid structure is wiped from the surface when the device reaches the first temperature point level. An apparatus for removing at least one molten or solid structure from a substrate for rework, the apparatus comprising: a fixture for sustaining and biasing the substrate against a wiper assembly; the wiper assembly configured and positioned to slidably engage at least a portion of the substrate; a bias for translating the wiper assembly along a surface of the substrate having the at least one molten or solid structure to be removed; and a guide block assembly capable of guiding and locking the wiper assembly.
    • 一种用于从表面去除至少一种熔融或固体结构的方法,包括:将具有至少一种熔融或固体结构的表面放置在固定装置中; 将所述擦拭器组件布置成靠近所述至少一个熔融或固体结构的偏压; 将所述刮水器组件保持在具有等于或高于所述至少一个熔融或固体结构的第二熔点水平的第一温度点水平的装置的第一位置; 并将夹具的温度提高到第一温度点水平; 其中当所述装置达到所述第一温度点水平时,所述至少一个熔融或固体结构从所述表面擦拭。 一种用于从基板去除至少一个熔融或固体结构以进行返修的装置,所述装置包括:固定装置,用于将所述基板保持并偏置在刮水器组件上; 所述擦拭器组件被构造和定位成可滑动地接合所述衬底的至少一部分; 用于沿着具有要移除的至少一个熔融或固体结构的衬底的表面平移擦拭器组件的偏压; 以及能够引导和锁定刮水器组件的导块组件。
    • 153. 发明授权
    • Method and apparatus for cleaning and removing flux from an electronic component package
    • 用于清洁和去除电子部件封装中的焊剂的方法和装置
    • US06395097B1
    • 2002-05-28
    • US09465132
    • 1999-12-16
    • Abhay MaheshwariShirish Shah
    • Abhay MaheshwariShirish Shah
    • C03C2300
    • H01L21/4864C03C23/0075Y10S134/902Y10S438/906
    • The present invention is a method for cleaning the cavities in electronic components by providing a semiconductor component having an outside surface and a cavity therein. The component including hole in the outside surface enabling fluid flow in to or out of the cavity. The component is immersed in a solvent bath where solvent is flowed into the cavity using the hole, the solvent cleaning the cavity and then optionally being evacuated from the cavity. Specifically, the principles of the present invention may be used to clean the underfill space of a flip-chip package. The flip-chip package includes a packaging substrate with an evacuation port passing through the bulk of the packaging substrate such that the port is in communication with the underfill space and a bottom surface with the packaging substrate. This assembly is immersed in a solvent filled solvent bath. Solvent is drawn into the underfill space through said port. Alternatively, solvent may be injected into the underfill space through the port. Moreover, both approaches may be combined to modulate the solvent flow through the underfill space. The act of drawing or injecting solvent into the underfill space cleans the flux and residues from the underfill space of the die/substrate assembly. After cleaning, the underfill space can be rinsed. After which the assembly is subject to further processing. The present invention includes an apparatus for cleaning electronic components in accordance with the present invention. The system includes a solvent containing solvent bath, a solvent flow means for flowing solvent under pressure into or out of an underfill space of an electronic component, and a rack for holding a plurality of components in position such that the solvent flow means can effectively flow solvent into the underfill spaces of the components.
    • 本发明是一种通过在其中提供具有外表面和空腔的半导体部件来清洁电子部件中的空腔的方法。 该组件包括外表面中的孔,使得流体能够流入或流出空腔。 将该组分浸入溶剂浴中,其中使用孔将溶剂流入空腔,溶剂清洗空腔,然后可选地从空腔排空。 具体地,本发明的原理可以用于清洁倒装芯片封装的底部填充空间。 倒装芯片封装包括具有通过封装基板主体的抽空端口的封装基板,使得该端口与底部填充空间连通,并且底部表面与封装基板连接。 将该组件浸入溶剂填充的溶剂浴中。 溶剂通过所述端口被吸入底部填充空间。 或者,可以通过端口将溶剂注入底部填充空间。 此外,两种方法可以组合以调节通过底部填充空间的溶剂流。 将溶剂吸入或注入底部填充空间的作用清除了模具/基底组件的底部填充空间的助焊剂和残留物。 清洁后,可以冲洗底部填充空间。 之后组装进行进一步处理。 本发明包括根据本发明的用于清洁电子部件的设备。 该系统包括含溶剂的溶剂浴,用于在压力下将溶剂流入或流出电子部件的底部填充空间的溶剂流装置,以及用于将多个部件保持在适当位置的支架,使得溶剂流动装置能够有效地流动 溶剂进入组件的底部填充空间。
    • 156. 发明申请
    • Method and structure for preventing adhesive bleed onto surfaces
    • 防止粘合剂渗透到表面上的方法和结构
    • US20010028117A1
    • 2001-10-11
    • US09881466
    • 2001-06-14
    • International Business Machines Corporation
    • Bernd K. AppeltGary A. JohanssonGerald W. JonesLuis J. MatienzoYenloan H. NguyenKonstantinos I. Papathomas
    • H01L029/40
    • B82Y30/00B82Y10/00H01L21/4864H01L23/49894H01L24/80H01L2924/01006H01L2924/01029H01L2924/01033H01L2924/01046H01L2924/01047H01L2924/01078H01L2924/01079H01L2924/01087H01L2924/014H01L2924/14
    • A method and structure is provided for preventing wetting or bleed of an adhesive, such as an epoxy, onto noble metal wire bond pads on the surface of a dielectric substrate when attaching an I/C chip to the substrate. The method includes treating the wire bond pads with a chemical composition which prevents bleeding onto the surfaces of the wire bond pads by a component of the epoxy. The chemical composition is a chemical which will provide nullSelf-Assembled Monolayersnull (SAMs) on the surface of the gold. These compositions are characterized by a molecule having at least one group, such as a mercaptan or disulfide, connected to a hydrocarbon moiety, such as a (CH2)x chain. The affinity of the thiol or sulfur-containing portion of the molecule chemically bonding with the noble metal provides a relatively strong attachment of the molecule to the metal surface. The hydrocarbon segment presents a surface on the noble metal that has the characteristics of the hydrocarbon portion of the molecule which has a low surface tension, and, thus, prevents wetting of the noble metal by an epoxy adhesive component. The SAMs, once they provide protection from the bleed of the die attach adhesives, self desorb during the wire bonding or soldering temperatures.
    • 提供了一种方法和结构,用于当将I / C芯片附接到基板时,防止粘合剂(例如环氧树脂)在电介质基板的表面上的贵金属引线接合焊盘上的润湿或渗出。 该方法包括用化学成分处理引线接合焊盘,该化学组合物防止由环氧树脂的部件渗透到引线接合焊盘的表面上。 化学成分是一种在金表面提供“自组装单层”(SAM)的化学成分。 这些组合物的特征在于具有连接到烃部分如(CH 2)x链的至少一个基团的硫醇或二硫化物的分子。 与贵金属化学键合的分子的硫醇或含硫部分的亲和性提供了分子与金属表面相对较强的附着。 碳氢化合物段在贵金属上呈现具有低分子表面张力的分子的特征的表面,从而防止了环氧粘合剂组分对贵金属的润湿。 SAMs一旦提供防止裸片附着胶粘剂的泄漏,在引线接合或焊接温度期间自解吸。