Debondable metallic bonding method
    2.
    发明授权
    Debondable metallic bonding method 失效
    可剥离金属接合方法

    公开(公告)号:US5234149A

    公开(公告)日:1993-08-10

    申请号:US938194

    申请日:1992-08-28

    IPC分类号: H01L21/60 G01R1/04 H05K3/34

    摘要: One or more metallized chip terminals of an electronic device, such as an integrated circuit chip or a laser chip, in one embodiment are temporarily bonded to one or more metallized substrate pads of a wiring substrate, as for the purpose of electrically testing the electronic device. The composition of the metallized chip terminals is suitably different from that of the metallized substrate pads. The pads and terminals are aligned and electrically connected together with a solder located between them under pressure and a temperature above the melting point of the solder. The solder is cooled, and electrical tests of the electronic device are performed by means of electrical access from testing circuitry to the chip terminals through the substrate pads. Then the solder is heated again above its melting point while being immersed in a liquid flux, whereby the liquid solder wets the metallized chip terminals but not the metallized substrate pads, and the device is gently mechanically pulled away from the wiring substrate and is cooled thereafter. This substrate can thereafter be reused for testing other electronic devices that have similarly suitably metallized terminals. In another embodiment, testing can be performed or not as may be desired; and, as for the purpose of chip operation as an integrated circuit or laser, the chip can be allowed to remain permanently bonded to the substrate in the form of a heat-sinking or heat-spreading submount, or it can be allowed to remain only temporarily bonded to the submount and subsequently pulled away from the submount for the purpose of reuse of the submount for another chip.

    摘要翻译: 在一个实施例中,诸如集成电路芯片或激光芯片的电子器件(10)的一个或多个金属化布线或芯片端子(8,9)暂时地接合到布线基板的一个或多个金属化的基板焊盘 10),用于电子设备的电气测试。 金属化芯片端子的组成与金属化衬底焊盘的组成适当地不同。 焊盘和端子在压力和高于焊料熔点的温度下对齐并电连接在一起,焊料位于它们之间。 焊料被冷却,并且通过从测试电路通过衬底焊盘到芯片端子的电接入来执行电子器件的电气测试。 然后将焊料再次加热到其熔点以上,同时浸入液体焊剂中,由此液体焊料润湿金属化的芯片端子而不是金属化的衬底焊盘,并且通过机械力(F)从布线轻轻地将器件拉出 然后冷却。 该衬底此后可重新用于测试具有类似适当金属化端子的其它电子器件。 在另一个实施例中,可以根据需要进行或不执行测试; 并且,对于作为集成电路或激光器的芯片操作的目的,可以允许芯片以散热或散热底座的形式保持永久地结合到基板,或者可以仅允许该芯片保持 临时绑定到基座并随后从基座上拉出,以便重新使用另一个芯片的基座。

    Interconnection lines for wafer-scale-integrated assemblies
    5.
    发明授权
    Interconnection lines for wafer-scale-integrated assemblies 失效
    用于晶片级集成组件的互连线

    公开(公告)号:US4703288A

    公开(公告)日:1987-10-27

    申请号:US719533

    申请日:1985-04-03

    摘要: In wafer-scale-integrated assemblies, microminiature transmission lines are utilized as interconnects on the wafer. The extremely small cross-sectional area of a typical such line results in its total line resistance being relatively large. Such a line exhibits signal reflections and resonances. In practice, it is not feasible to eliminate these effects by conventional load termination techniques. As a result, the frequency at which digital signals can be transmitted over such a line is typically limited to well below its so-called resonance limit. In accordance with a feature of the invention, the structural parameters of each line are selected to meet specified design criteria that ensure optimal high-frequency performance of the line.

    摘要翻译: 在晶片级集成组件中,微型传输线被用作晶片上的互连。 典型的这种线的极小的横截面积导致其总线路电阻相对较大。 这样一条线表现出信号反射和谐振。 在实践中,通过传统的负载终止技术消除这些影响是不可行的。 结果,数字信号可以通过这种线传输的频率通常被限制在远远低于其所谓的共振极限。 根据本发明的特征,选择每条线的结构参数以满足确保线路的最佳高频性能的规定设计标准。

    Optical fiber switch
    7.
    发明授权
    Optical fiber switch 失效
    光纤开关

    公开(公告)号:US5000532A

    公开(公告)日:1991-03-19

    申请号:US431941

    申请日:1989-11-06

    IPC分类号: G02B6/35 G02B6/36

    摘要: A precisely aligned optical fiber switch assembly. A base member has a vee groove for supporting a fixed optical fiber and a second optical fiber in optical alignment with the fixed fiber. The groove contains sections of different dimensions that receive and align sheathed portions of the fibers and groove sections that receive and align unsheathed portions of the fibers. First aligning means on the base member longitudinally position the fixed and second fibers in the groove. Covering means mate with the base member for covering at least part of the sheathed portions of the fibers. Aligning means position the covering means precisely with respect to the base member.

    摘要翻译: 精密对准的光纤开关组件。 基座构件具有用于支撑固定光纤的vee槽和与固定光纤对准的第二光纤。 凹槽包含不同尺寸的部分,其接收和对准纤维的护套部分和容纳和对准纤维未固化部分的凹槽部分。 基体上的第一对准装置将固定和第二纤维纵向定位在槽中。 覆盖装置与基部构件配合以覆盖纤维的至少一部分护套部分。 对准装置将覆盖装置相对于基座构件精确地定位。

    Temporary connections for fast electrical access to electronic devices
    9.
    发明授权
    Temporary connections for fast electrical access to electronic devices 失效
    用于快速电气接入电子设备的临时连接

    公开(公告)号:US5481205A

    公开(公告)日:1996-01-02

    申请号:US344393

    申请日:1994-11-23

    摘要: A given testing substrate for fast-testing many integrated-circuit electronic devices, one after the other, has a set of mutually insulated collated wiring areas that can be aligned with solder-bump I/O pads of the electronic devices. At the surface of each of the corrugated areas is located a layer that is an electrically conductive durable oxide, or that is itself durable, electrically conductive, and non-oxidizable. During testing, the solder-bump I/O pads of the electronic device being tested are aligned with and pressed against the corrugated wiring areas of the given substrate. Alternatively, the electronic devices being of the electrically programmable variety, such as EPROMs, programming voltages can be delivered to each of the devices, one after the other, through the corrugated wiring areas of a single substrate.

    摘要翻译: 给定的用于快速测试许多集成电路电子器件的测试基板,一个接一个地具有一组可以与电子器件的焊料凸块I / O焊盘对准的相互绝缘的整理布线区域。 在每个波纹区域的表面上设置有导电耐用氧化物的层,或者其本身是耐用的,导电的和不可氧化的。 在测试期间,正在测试的电子器件的焊料凸块I / O焊盘与给定衬底的波纹布线区域对准并压紧。 或者,可以通过单个基板的波纹布线区域,一个接一个地将诸如EPROM的编程电压的电可编程品种的电子装置传送到每个装置。