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    • 9. 发明授权
    • Method for cleaning wafers with ionized water
    • 用离子水清洗晶片的方法
    • US06517637B1
    • 2003-02-11
    • US08899176
    • 1997-07-23
    • Chiang FuYu-Chyi Harn
    • Chiang FuYu-Chyi Harn
    • B08B704
    • H01L21/02052C11D7/08C11D7/265C11D11/0047
    • The present invention provides a method for cleaning wafer surfaces in a scrubber by ion doped deionized water without the electrostatic discharge problem. The method can be carried out by first doping a quantity of deionized water with at least one species of ions from the group consisting of OH−, F−, Cl−, NH4+ and H+ any other suitable ions. The added ions significantly reduce the resistivity of the DI water such that DI water is no longer a perfect insulator and therefore, when sprayed onto wafer surfaces covered by an insulating material, the generation of electrostatic charges is significantly reduced. As a result, the undesirable effect of electrostatic discharge can be significantly reduced or eliminated and the yield of the wafer fabrication process can be improved.
    • 本发明提供了一种用于通过离子掺杂的去离子水清洁洗涤器中的晶片表面而没有静电放电问题的方法。 该方法可以通过首先用至少一种离子从OH-,F-,Cl-,NH4 +和H +任意其它合适的离子掺杂一定量的去离子水进行。 添加的离子显着降低去离子水的电阻率,使得去离子水不再是完美的绝缘体,因此当喷涂在被绝缘材料覆盖的晶片表面上时,静电电荷的产生显着降低。 结果,可以显着地减少或消除静电放电的不良影响,并且可以提高晶片制造工艺的产量。