Integrated circuit chip carrier
    1.
    发明授权
    Integrated circuit chip carrier 失效
    集成电路芯片载体

    公开(公告)号:US5293067A

    公开(公告)日:1994-03-08

    申请号:US898231

    申请日:1992-06-12

    摘要: An integrated circuit chip carrier assembly, comprising a semiconductor device (10) having interconnection pads (14) disposed on an active surface (12) of the device. The device (10) is attached by means of electrically conducting bumps (26) to a circuitry pattern (18) on a first side of a circuit carrying substrate (16). The substrate is typically an aramid reinforced organic resin, such as epoxy. The circuitry (18, 20) is electrically connected by conductive through-holes (22) to an array of solder pads on a second side of the substrate. Some or all of the through-holes (22) are covered by the device. The overall length and width of the circuit carrying substrate (16) are each a maximum of about 0.15 inches greater than the equivalent dimensions of the device (10), creating a carrier that is only slightly larger than the semiconductor device itself.

    摘要翻译: 一种集成电路芯片载体组件,包括具有布置在所述装置的有效表面(12)上的互连焊盘(14)的半导体器件(10)。 装置(10)通过导电凸块(26)连接到电路承载衬底(16)的第一侧上的电路图案(18)。 基底通常是芳族聚酰胺增强的有机树脂,例如环氧树脂。 电路(18,20)通过导电通孔(22)电连接到衬底的第二侧上的焊盘阵列。 一些或全部通孔(22)被装置覆盖。 电路承载基板(16)的总长度和宽度各自最大大约为装置(10)的等效尺寸约0.15英寸,从而形成仅略大于半导体装置本身的载体。

    Single alloy solder clad substrate
    2.
    发明授权
    Single alloy solder clad substrate 失效
    单合金焊包覆基板

    公开(公告)号:US5623127A

    公开(公告)日:1997-04-22

    申请号:US348427

    申请日:1994-12-02

    摘要: A solder clad printed circuit board (100) consists of an electrically insulating substrate that has copper circuit traces (105), portions of which are solderable. A substantially planar layer (120) of a soldering composition is fused to the solderable traces, to form a solder pad that is not domed. The layer is composed of a mass of off-eutectic solder particles (115) that are fused together to form an agglomeration (120) having a porous structure. The solder particles are fused together by heating the off-eutectic solder to a temperature that is between the solidus temperature and the liquidus temperature of the solder. The solder is then cooled below the solidus temperature to solidify it.

    摘要翻译: 焊料包覆印刷电路板(100)由具有铜电路迹线(105)的电绝缘基板组成,其一部分是可焊接的。 焊接组合物的基本平坦的层(120)被熔合到可焊接迹线,以形成不是圆顶的焊盘。 该层由大量的非共熔焊料颗粒(115)组成,它们被熔合在一起以形成具有多孔结构的附聚物(120)。 通过将非共晶焊料加热到固相线温度和焊料的液相线温度之间的温度将焊料颗粒熔合在一起。 然后将焊料冷却至固相线温度以使其固化。

    Soldering process
    5.
    发明授权
    Soldering process 失效
    焊接工艺

    公开(公告)号:US5540379A

    公开(公告)日:1996-07-30

    申请号:US236611

    申请日:1994-05-02

    IPC分类号: B23K35/02 B23K35/26 H05K3/34

    摘要: A soldering process using two different types of solder alloys is disclosed. The first solder alloy (115) undergoes a solid-to-liquid transition at a first temperature. The second solder alloy (120) undergoes this solid-to-liquid transition at a second temperature, the second temperature being greater than the first temperature. The soldering composition is deposited (20) on a substrate (100) having solderable portions (105) and is heated to a temperature that is above the first temperature but below the second temperature (32). During this time, the first solder alloy liquifies, while the second solder alloy remains solid. The soldering composition is subsequently cooled (40) to solidify the first solder material. A part or electronic component is added (80) to the solidified solder material and the solder materials is again heated above the second temperature (30) in order to reflow the solder and form a metallurgical bond between the substrate and the electronic component.

    摘要翻译: 公开了使用两种不同类型的焊料合金的焊接工艺。 第一焊料合金(115)在第一温度下经历固 - 液转变。 第二焊料合金(120)在第二温度下经历该固 - 液转变,第二温度大于第一温度。 将焊接组合物沉积在具有可焊接部分(105)的基底(100)上,并被加热到高于第一温度但低于第二温度(32)的温度。 在此期间,第一焊料合金液化,而第二焊料合金保持固体。 焊接组合物随后被冷却(40)以固化第一焊料材料。 向固化的焊料材料添加部件或电子部件(80),并且焊料材料再次被加热到高于第二温度(30)以便回流焊料并在基板和电子部件之间形成冶金结合。

    Vacuum infiltration of underfill material for flip-chip devices
    9.
    发明授权
    Vacuum infiltration of underfill material for flip-chip devices 失效
    用于倒装芯片的底部填充材料的真空渗透

    公开(公告)号:US5203076A

    公开(公告)日:1993-04-20

    申请号:US812332

    申请日:1991-12-23

    IPC分类号: H01L21/56

    摘要: A method of attaching an integrated circuit (10) to a substrate (20) starts with electrically interconnecting (14) the integrated circuit on the substrate. Next, a bead of underfill material (22) is provided on the substrate (20) about the periphery (24) of the integrated circuit (10). At least a partial vacuum (34) is then applied to the integrated circuit (10) and the substrate (20) to substantially evacuate the area (18) between the integrated circuit (10) and the substrate (20). Finally, fluid pressure (42) is applied to the integrated circuit (10) and the substrate (20) to force at least a portion of the underfill material (22) into the area (18) between the integrated circuit (10) and the substrate (20).

    摘要翻译: 将集成电路(10)附接到衬底(20)的方法从将衬底上的集成电路电连接(14)开始。 接下来,围绕集成电路(10)的周边(24)在基板(20)上设置有底部填充材料(22)的小珠。 至少部分真空(34)然后被施加到集成电路(10)和基板(20),以基本上抽出集成电路(10)和基板(20)之间的区域(18)。 最后,将流体压力(42)施加到集成电路(10)和基板(20)以迫使底部填充材料(22)的至少一部分进入集成电路(10)和集成电路(10)之间的区域(18) 衬底(20)。

    Soldering process
    10.
    发明授权
    Soldering process 失效
    焊接工艺

    公开(公告)号:US5429293A

    公开(公告)日:1995-07-04

    申请号:US358295

    申请日:1994-12-19

    摘要: A soldering process uses two or more different solder alloys. A first solder alloy (115) that undergoes a solid-to-liquid transition at a first temperature is coated (20) onto the solderable surfaces (105) of a printed circuit board (100). A solder paste (120) that undergoes this solid-to-liquid transition at a temperature greater than the first temperature is deposited on the coated solderable potions, and is heated to a temperature that is above the first temperature but below the second temperature. During this time, the first solder alloy liquifies, while the solder paste does not. The first solder alloy wets to the individual particles in the solder paste, and alloys to the solderable surfaces and the solder particles in the solder paste. The soldering composition is subsequently cooled (40) to solidify the first solder material, forming a solid and substantially planar coating on the solderable potions of the printed circuit board.

    摘要翻译: 焊接工艺使用两种或更多种不同的焊料合金。 在第一温度下经历固 - 液过渡的第一焊料合金(115)涂覆(20)到印刷电路板(100)的可焊接表面(105)上。 在大于第一温度的温度下经历该固 - 液过渡的焊膏(120)沉积在涂覆的可焊接部分上,并被加热到高于第一温度但低于第二温度的温度。 在此期间,第一焊料合金液化,而锡膏不发生。 第一焊料合金润湿焊锡膏中的各个颗粒,并将其焊接到可焊接表面和焊膏中的焊料颗粒。 焊接组合物随后被冷却(40)以固化第一焊料材料,在印刷电路板的可焊接部分上形成固体和基本上平面的涂层。