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    • 9. 发明授权
    • Global planarization using SOG and CMP
    • 使用SOG和CMP的全局平面化
    • US6010963A
    • 2000-01-04
    • US567504
    • 1995-12-05
    • Derryl D. J. AllmanKenneth P. Fuchs
    • Derryl D. J. AllmanKenneth P. Fuchs
    • H01L21/3105H01L21/316H01L21/768H01L21/20
    • H01L21/76819H01L21/31053H01L21/31055H01L21/316
    • A method for planarizing the surface of a semiconductor device which employs spin on glass (SOG) and an etching operation to remove high portions of the SOG prior to a chemical metal polish (CMP) operation. The SOG is baked and cured before etching. Additional layers of SOG and etching operations may be employed as necessary. A thick encapsulating oxide layer is deposited over the SOG layer. For surface irregularities caused by metal lines, an insulating layer may be deposited over the surface before the SOG. Where an additional metal line is to be deposited on the surface, an additional insulating layer is deposited after the CMP operation. In the case of metal lines made of aluminum, provision is also made for preventing Hillock formations on the metal lines.
    • 在化学金属抛光(CMP)操作之前,使用旋涂玻璃(SOG)的半导体器件的表面平坦化的方法和蚀刻操作来去除SOG的高部分。 SOG在蚀刻前烘烤和固化。 根据需要可以采用附加的SOG层和蚀刻操作。 在SOG层上沉积厚的封装氧化物层。 对于由金属线引起的表面凹凸,绝缘层可能沉积在SOG之前的表面上。 在附加金属线要沉积在表面上的情况下,在CMP操作之后沉积附加的绝缘层。 在由铝制成的金属线的情况下,还提供用于防止金属线上的小丘形成。