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    • 43. 发明授权
    • Semiconductor device for reducing photovolatic current
    • 用于降低光伏电流的半导体器件
    • US07238579B2
    • 2007-07-03
    • US11003279
    • 2004-12-03
    • Bradley P. SmithEdward O. Travis
    • Bradley P. SmithEdward O. Travis
    • H01L21/8236
    • H01L23/552H01L2924/0002Y02P80/30H01L2924/00
    • A semiconductor device that has a common border between P and N wells is susceptible to photovoltaic current that is believed to be primarily generated from photons that strike this common border. Photons that strike the border are believed to create electron/hole pairs that separate when created at the PN junction of the border. The photovoltaic current can have a sufficient current density to be destructive to the metal connections to a well if the area of these metal connections to the well is small relative to the length of the border. This photovoltaic current can be reduced below destructive levels by covering the common border sufficiently to reduce the number of photons hitting the common border. The surface area of the connections can also be increased to alleviate the problem.
    • 在P和N阱之间具有共同边界的半导体器件易于被认为主要由撞击该共同边界的光子产生的光电流。 据认为,在边界PN结处产生的电子/空穴对被分离出来。 如果与井的这些金属连接的面积相对于边界的长度小,则光电流可以具有足够的电流密度来破坏与阱的金属连接。 通过充分覆盖公共边界以减少击中共同边界的光子的数量,该光电流可以降低到破坏性水平以下。 连接的表面积也可以增加以减轻问题。
    • 45. 发明申请
    • Semiconductor fabrication process employing spacer defined vias
    • 半导体制造工艺采用间隔件定义的通孔
    • US20070072334A1
    • 2007-03-29
    • US11239282
    • 2005-09-29
    • Marius OrlowskiKathleen Yu
    • Marius OrlowskiKathleen Yu
    • H01L21/00H01L21/8236
    • H01L21/76835H01L21/76808H01L21/76811
    • A semiconductor fabrication process includes forming a first etch mask (131) that defines a first opening (132) and a second etch mask (140) that defines a second opening (142) overlying an interlevel dielectric (ILD) (108). The ILD (108) is etched to form a first via (154) defined by the first opening (132) and a second via (152) defined by the second opening (142). The first etch mask (131) may include a patterned hard mask layer (122) and the second etch mask may be a patterned photoresist layer (140). The first etch mask may further include spacers (130) adjacent sidewalls of the patterned hard mask layer (122). The patterned hard mask layer (122) may be a titanium nitride and the spacers (130) may be silicon nitride. The ILD (108) may be an CVD low-k dielectric layer overlying a CVD low-k etch stop layer (ESL) (106).
    • 半导体制造工艺包括形成限定第一开口(132)的第一蚀刻掩模(131)和限定覆盖层间电介质(IL))的第二开口(142)的第二蚀刻掩模(140)。 蚀刻ILD(108)以形成由第一开口(132)限定的第一通孔(154)和由第二开口(142)限定的第二通孔(152)。 第一蚀刻掩模(131)可以包括图案化的硬掩模层(122),并且第二蚀刻掩模可以是图案化的光致抗蚀剂层(140)。 第一蚀刻掩模还可以包括与图案化的硬掩模层(122)的侧壁相邻的间隔物(130)。 图案化的硬掩模层(122)可以是氮化钛,并且间隔物(130)可以是氮化硅。 ILD(108)可以是覆盖CVD低k蚀刻停止层(ESL)(106)的CVD低k电介质层。