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    • 3. 发明授权
    • Method of forming trench isolation regions
    • 形成沟槽隔离区域的方法
    • US06335287B1
    • 2002-01-01
    • US09637788
    • 2000-08-11
    • Hong-kyu HwangBo-un YoonKyu-hwan ChangSang-rok Hah
    • Hong-kyu HwangBo-un YoonKyu-hwan ChangSang-rok Hah
    • H01L12302
    • H01L21/76229H01L21/31053H01L21/31055
    • To form isolation trenches on a semiconductor substrate, chemical mechanical polishing (CMP) stopping patterns are formed on the substrate, and the substrate is then etched using the CMP stopping patterns as a mask. Then an insulating material is deposited to fill the trenches and cover the CMP stopping patterns. The insulating material is etched using a CMP process until the CMP stopping patterns become exposed, and is then etched using a wet or dry etching process. The wet or dry etching is continued until protruding insulating material above a surface of the substrate is a predetermined thickness, which corresponds to an amount of the insulating material that is etched during removal of the CMP stopping patterns and during intermediate processes prior to formation of a gate oxide layer.
    • 为了在半导体衬底上形成隔离沟槽,在衬底上形成化学机械抛光(CMP)停止图案,然后使用CMP停止图案作为掩模蚀刻衬底。 然后沉积绝缘材料以填充沟槽并覆盖CMP停止图案。 使用CMP工艺蚀刻绝缘材料,直到CMP停止图案露出,然后使用湿法或干蚀刻工艺进行蚀刻。 继续进行湿法或干蚀刻蚀刻,直到基片表面上方的突出的绝缘材料为预定的厚度,这对应于在去除CMP停止图案期间以及在形成CMP停止图案之间的中间工艺期间被蚀刻的绝缘材料的量 栅氧化层。
    • 4. 发明授权
    • Chemical mechanical polishing apparatus having a cleaner for cleaning a conditioning disc and method of conditioning a polishing pad of the apparatus
    • 具有用于清洁调节盘的清洁剂的化学机械抛光装置和调节该装置的抛光垫的方法
    • US06695684B2
    • 2004-02-24
    • US09969992
    • 2001-10-04
    • Young-rae ParkHo-young KimHong-kyu Hwang
    • Young-rae ParkHo-young KimHong-kyu Hwang
    • B24B100
    • B24B53/017H01L21/67046
    • A chemical mechanical polishing apparatus includes a polishing pad on which a wafer requiring planarization is placed, a conditioning disc having an abrasive surface for conditioning the polishing pad, a tank containing de-ionized water in which the conditioning disc soaks while standing by, and a cleaner for cleaning the conditioning disc. The conditioning disc cleaner is disposed in the tank of de-ionized water to remove polishing impurities from an abrasive surface of the conditioning disc. The cleaner may include a brush having bristles against which the abrasive surface of the conditioning disc is placed when it is lowered into the tank. In operation, after the wafer is polished, an abrasive surface of the conditioning disc is run over the upper surface of the polishing pad to condition the surface of the polishing pad. Then the conditioning disc is moved off of the upper surface of the polishing pad and to a stand-by position in which the abrasive surface of the disc is submerged in a liquid. Finally, while the conditioning disc is in its stand-by position, impurities are forced off of the abrasive surface and into the liquid by the cleaner disposed in the liquid. The conditioning disc is thus cleaned so that impurities are not transferred to the polishing pad during the next conditioning process.
    • 化学机械抛光装置包括其上放置有需要平面化的晶片的抛光垫,具有用于调节抛光垫的研磨表面的调节盘,包含调节盘在静置时浸泡的去离子水的罐,以及 用于清洁调理盘的清洁剂。 调节盘清洁器设置在去离子水的罐中,以从调理盘的研磨表面去除抛光杂质。 清洁器可以包括具有刷毛的刷子,当调节盘的研磨表面下降到罐中时,该刷头与该刷头对准。 在操作中,在抛光晶片之后,调节盘的研磨表面在抛光垫的上表面上延伸以调节抛光垫的表面。 然后调节盘从抛光垫的上表面移动到盘的研磨表面浸没在液体中的待机位置。 最后,当调节盘处于其待机位置时,通过设置在液体中的清洁剂将杂质从研磨表面强制离开液体。 因此,调节盘被清洁,使得杂质在下一个调理过程中不会转移到抛光垫。