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    • 10. 发明公开
    • Fixture and a method for plating contact bumps for integrated circuits
    • 保持装置和方法用于镀覆驼峰形端子为集成电路。
    • EP0379289A2
    • 1990-07-25
    • EP90300208.7
    • 1990-01-09
    • TEXAS INSTRUMENTS INCORPORATED
    • Stierman, Roger J.Lessard, Robert J.
    • C25D7/12
    • C25D17/06C25D7/12H01L21/67138H01L24/11H01L2224/13099H01L2924/01005H01L2924/01006H01L2924/01033H01L2924/01078H01L2924/14
    • @ This disclosure describes a plating fixture to hold a silicon wafer containing integrated circuits in a metal plating bath. The wafer (11) is coated with photoresist to a thickness equal to the desired bump height and the desired bump locations patterned by standard photolithographic techniques. The wafer is then loaded in the fixture and the fixture placed in the plating bath so that the patterned side of the wafer is facing up and the plating anode (3) is located directly above the wafer (11). Systems presently on the market have the wafer positioned with the patterned side facing down and the anode located below it, or the wafer faces sideways and the anodes are access from it. These present systems allow air to be entrapped in the pattern of the photoresist, lowering yield by under plating or uneven plating of the bumps on the wafer. This disclosure prevents such yield loss and also allows cleanups on the wafer after it is loaded in the fixture.
    • 本发明描述一种电镀夹具保持容纳集成电路的金属镀浴的硅晶片。 晶片(11)涂覆有光刻胶的厚度等于期望凸块高度,并通过标准的光刻技术构图所需的凸块的位置。 然后将晶片装载到夹具和在镀浴中放置在夹具所以没有晶片的图案的一面朝上和电镀阳极(3)直接位于所述晶片(11)的上方。 系统目前市场上有图案化的面朝下,位于其下方的阳极位于晶片,或晶片面向侧向和阳极是从它的访问。 这些本发明的系统允许空气在光致抗蚀剂的图案来截留,降低下电镀或晶片上的凸块的不均匀的电镀产生通过。 本发明防止了寻求的产率损失,并且因此它被加载到夹具后允许在晶片上的清理。