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    • 4. 发明申请
    • Methods of post-contact back end of line through-hole via integration
    • 通过一体化的后通孔后端的方法
    • US20080315418A1
    • 2008-12-25
    • US11820811
    • 2007-06-20
    • John BoydFritz RedekerYezdi DordiHyungsuk Alexander YoonShijian Li
    • John BoydFritz RedekerYezdi DordiHyungsuk Alexander YoonShijian Li
    • H01L21/4763H01L23/48
    • H01L23/48H01L21/4763H01L21/76898H01L2924/14
    • Presented are methods of fabricating three-dimensional integrated circuits that include post-contact back end of line through-hole via integration for the three-dimensional integrated circuits. In one embodiment, the method comprises forming metal plug contacts through a hard mask and a premetal dielectric to transistors in the semiconductor. The method also includes etching a hole for a through-hole via through the hard mask to the semiconductor using a patterned photoresist process, removing the patterned photoresist and using a hard mask process to etch the hole to an amount into the semiconductor. The method further includes depositing a dielectric liner to isolate the hole from the semiconductor, depositing a gapfill metal to fill the hole, and planarizing the surface of the substrate to the hard mask. Another aspect of the present invention includes three-dimensional integrated circuits fabricated according to methods of the present invention.
    • 提出了制造三维集成电路的方法,其包括用于三维集成电路的集成的线路通孔的后接触后端。 在一个实施例中,该方法包括通过硬掩模和前金属电介质形成金属插头触点到半导体中的晶体管。 该方法还包括使用图案化的光致抗蚀剂工艺将用于通孔的通孔穿过硬掩模蚀刻到半导体,去除图案化的光致抗蚀剂并使用硬掩模工艺将孔蚀刻到半导体中的量。 所述方法还包括沉积介电衬垫以将所述孔与所述半导体隔离,沉积间隙填充金属以填充所述孔,以及将所述衬底的表面平面化至所述硬掩模。 本发明的另一方面包括根据本发明的方法制造的三维集成电路。
    • 8. 发明授权
    • Cu CMP polishing pad cleaning
    • Cu CMP抛光垫清洗
    • US07220322B1
    • 2007-05-22
    • US09645690
    • 2000-08-24
    • Lizhong SunShijian LiFred C. Redeker
    • Lizhong SunShijian LiFred C. Redeker
    • B08B7/04H01L21/302
    • B24B53/017
    • A polishing pad is cleaned of Cu CMP by-products, subsequent to planarizing a wafer, to reduce pad-glazing by applying to the polishing pad surface a composition comprising about 0.1 to about 3.0 wt. % of at least one organic compound having one or more amine or amide groups, an acid or a base in an amount sufficient to adjust the pH of the composition to about 5.0 to about 12.0, the remainder water. Embodiments comprise ex situ cleaning of a rotating polishing pad by applying a solution having a pH of about 5.0 to about 12.0 at a flow rate of about 100 to about 600 ml/min. for about 3 to about 20 seconds after polishing a wafer having a Cu-containing surface and then removing the cleaning solution from the polishing pad by high pressure rinsing with water.
    • 在平坦化晶片之后,将抛光垫清除为Cu CMP副产物,通过向抛光垫表面施加包含约0.1至约3.0重量%的组合物的组合物来减少垫玻璃。 %的至少一种具有一个或多个胺或酰胺基团的有机化合物,酸或碱的量足以将组合物的pH调节至约5.0至约12.0,其余为水。 实施例包括通过以约100至约600ml / min的流速施加pH为约5.0至约12.0的溶液来旋转抛光垫的原位清洁。 在研磨具有含Cu表面的晶片之后约3至约20秒,然后通过用水高压冲洗从抛光垫除去清洁溶液。