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    • 36. 发明申请
    • Low dielectric constant thin films and chemical vapor deposition method of making same
    • 低介电常数薄膜和化学气相沉积法制作相同
    • US20050038276A1
    • 2005-02-17
    • US10937434
    • 2004-09-09
    • Ravi LaxmanChongying XuThomas Baum
    • Ravi LaxmanChongying XuThomas Baum
    • C07F7/08C07F7/18C23C16/30C07F7/04H01L21/31C08J7/04H01L21/469
    • C23C16/30C07F7/0838C07F7/1896
    • A CVD process for producing low-dielectric constant, SiOC thin films using organosilicon precursor compositions having at least one alkyl group and at least one cleavable organic functional group that when activated rearranges and cleaves as a highly volatile liquid or gaseous by-product. In a first step, a dense SiOC thin film is CVD deposited from the organosilicon precursor having at least one alkyl group and at least one cleavable organic functional group, having retained therein at least a portion of the alkyl and cleavable organic functional groups. In a second step, the dense SiOC thin film is post annealed to effectively remove the volatile liquid or gaseous by-products, resulting in a porous low-dielectric constant SiOC thin film. The porous, low dielectric constant, SiOC thin films are useful as insulating layers in microelectronic device structures. Preferred porous, low-dielectric SiOC thin films are produced using di(formato)dimethylsilane as the organosilicon precursor.
    • 使用具有至少一个烷基和至少一个可裂解的有机官能团的有机硅前体组合物生产低介电常数的SiOC薄膜的CVD方法,当被激活重新排列并且作为高挥发性液体或气态副产物裂解时。 在第一步骤中,由具有至少一个烷基和至少一个可切割的有机官能团的有机硅前体CVD沉积致密的SiOC薄膜,其中保留有至少一部分烷基和可裂解的有机官能团。 在第二步骤中,将致密的SiOC薄膜进行后退火以有效地除去挥发性液体或气态副产物,导致多孔低介电常数SiOC薄膜。 多孔,低介电常数的SiOC薄膜可用作微电子器件结构中的绝缘层。 使用二(格式)二甲基硅烷作为有机硅前体制备优选的多孔,低介电SiOC薄膜。