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    • 10. 发明公开
    • Sidewall spacers for cmos circuits stress relief/isolation and method for making
    • 侧壁间隔物用于接收电压和CMOS电路的隔离,以及制造过程。
    • EP0242506A2
    • 1987-10-28
    • EP87100962.7
    • 1987-01-23
    • International Business Machines Corporation
    • Dally, Anthony JohnOgura, SeikiRiseman, JacobRovedo, Nivo
    • H01L29/78H01L21/225H01L21/76
    • H01L21/76224
    • A method for forming fully recessed (planar) isolation regions (22,24) on a semiconductor for the manufacture of CMOS integrated circuits, and the resulting semiconductor structure, comprising in a P doped silicon substrate (10) with mesas (22,24) formed therein, forming low viscosity sidewall spacers (30) of borosilicate glass in contact with the sidewalls of those mesas designated to have N-channel devices formed therein; then filling the trenches (11,12) in the substrate adjacent to the mesas with TEOS 32); and heating the structure until the boron in the sidewall spacers diffuses into the sidewalls of the designated mesas to form channel stops (40,42). These sidewall spacers reduce the occurrence of cracks in the TEOS by relieving internal mechanical stress therein and permit the formation of channel stops via diffusion, thereby permitting mesa walls to be substantially vertical.
    • 一种用于形成在半导体完全凹入(平面)的隔离区(22,24),用于CMOS的制造方法的集成电路,产生的半导体结构,在P掺杂硅衬底与台面,其包含(10)(22,24) 形成于其中,形成与指定为具有N沟道器件形成于其中台面的那些侧壁接触的硼硅酸盐玻璃的低粘度侧壁间隔物(30); 然后填充在邻近与TEOS 32)的台面的衬底沟槽(11,12); 并加热该结构,直到在侧壁间隔件中的硼扩散进入指定台面以形成通道的侧壁停止(40,42)。 这些侧壁间隔物通过在其中缓和内部机械应力减小TEOS裂纹的产生,并允许信道的形成通过扩散停止,由此允许台面的壁是基本垂直的。