Structure and method for making a compliant lead for a microelectronic
device
    9.
    发明授权
    Structure and method for making a compliant lead for a microelectronic device 失效
    用于制造微电子器件的柔性引线的结构和方法

    公开(公告)号:US5966592A

    公开(公告)日:1999-10-12

    申请号:US560272

    申请日:1995-11-21

    摘要: A method of treating a lead in a chip package. A conductive lead is positioned such that it extends across a gap in a dielectric substrate and is secured at either end to a first surface of the substrate. Directed energy is then applied to a desired portion of the surface of the lead within the gap. As a result of the application of energy, a surface layer of the lead is recrystallized thereby creating a fine grain, dense surface layer of lead material. Surface contaminates may be vaporized and contaminants at the grain boundaries of the recrystallized surface layers may be driven away from the grain boundaries such that a treated lead is more ductile and has better resistance to thermal cycling after the lead has been attached to a chip contact.

    摘要翻译: 一种处理芯片封装中的引线的方法。 导电引线定位成使得其延伸穿过电介质基板中的间隙,并且在任一端固定到基板的第一表面。 然后将定向能量施加到间隙内的引线表面的期望部分。 作为施加能量的结果,铅的表面层被再结晶,从而形成细晶粒,致密的铅材料表面层。 表面污染物可能被蒸发,并且再结晶表面层的晶界处的污染物可能被驱离离开晶界,使得处理的引线更具延展性,并且在引线已经附着到芯片接触之后具有更好的耐热循环性。

    Microelectronic encapsulation methods and equipment
    10.
    发明授权
    Microelectronic encapsulation methods and equipment 失效
    微电子封装方法和设备

    公开(公告)号:US5766987A

    公开(公告)日:1998-06-16

    申请号:US532235

    申请日:1995-09-22

    IPC分类号: H01L21/56 H01L21/44

    CPC分类号: H01L21/565 H01L2924/0002

    摘要: Microelectronic assemblies such as semiconductor chip assemblies are encapsulated. During encapsulation, the terminals carried by a dielectric layer in each assembly, and the bottom surface of the semiconductor chip in each assembly are protected by covering layers. The covering layers confine the liquid encapsulant and prevent contamination of the terminals and chip bottom surfaces. The encapsulation process may be conducted by using a tilting fixture. The liquid encapsulant and the assemblies are placed into the fixture, the fixture is closed and evacuated, and the encapsulant is then poured onto the assemblies while maintaining the fixture under vacuum. The fixture is then pressurized and maintained under pressure during cure of the encapsulant.

    摘要翻译: 诸如半导体芯片组件的微电子组件被封装。 在封装期间,每个组件中由介电层承载的端子和每个组件中的半导体芯片的底表面由覆盖层保护。 覆盖层限制液体密封剂,并防止端子和芯片底面的污染。 封装过程可以通过使用倾斜夹具进行。 将液体密封剂和组件放入固定装置中,将固定装置关闭并抽真空,然后将密封剂倒入组件上,同时将固定装置保持在真空状态。 然后将固定装置加压并在密封剂固化期间保持压力。