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    • 2. 发明授权
    • Extension of shallow trench isolation by ion implantation
    • 通过离子注入扩展浅沟槽隔离
    • US06432798B1
    • 2002-08-13
    • US09636297
    • 2000-08-10
    • Mark Y. LiuLeonard C. PipesMitchell C. Taylor
    • Mark Y. LiuLeonard C. PipesMitchell C. Taylor
    • H01L2176
    • H01L21/76237
    • A shallow trench isolation (STI) structure is formed by etching trenches into the surface of a substrate in alignment with a patterned masking layer. An ion implantation of, for example, carbon, nitrogen, or oxygen, is performed so as to create an electrically insulating layer extending downwardly from a bottom surface of the trench. By implanting such extensions, STI structures with greater effective aspect ratios may be obtained which, in turn, allow greater packing density in integrated circuits. Implanted isolation structures may be formed without etching a trench by implanting into regions of the substrate. In this way, trench etch, dielectric back-fill, and planarization operations can be eliminated. Furthermore the implanted regions may be formed by multiple implants at different energies so as to obtain multiple, typically contiguous, target ranges. Ions of various masses or charges may be used so as to obtain the desired implant depth and concentration profile in the isolation structures, independent of whether these structures are trench extensions or formed directly beneath a planarized substrate surface.
    • 通过将沟槽蚀刻到与图案化掩模层对准的衬底的表面中来形成浅沟槽隔离(STI)结构。 进行例如碳,氮或氧的离子注入,以形成从沟槽的底表面向下延伸的电绝缘层。 通过植入这种扩展,可以获得具有更大有效纵横比的STI结构,这又可以在集成电路中允许更大的堆积密度。 可以通过注入到衬底的区域中而不蚀刻沟槽来形成植入式隔离结构。 以这种方式,可以消除沟槽蚀刻,电介质背面填充和平坦化操作。 此外,植入区域可以由不同能量的多个植入物形成,以便获得多个通常连续的目标范围。 可以使用各种质量或电荷的离子,以便在隔离结构中获得期望的注入深度和浓度分布,而不管这些结构是沟槽延伸还是直接形成在平坦化的衬底表面下方。
    • 6. 发明申请
    • SOURCE/DRAIN EXTENSIONS IN NMOS DEVICES
    • NMOS器件中的源/漏极扩展
    • US20080160683A1
    • 2008-07-03
    • US11618368
    • 2006-12-29
    • Aaron O. VanderpoolMitchell C. Taylor
    • Aaron O. VanderpoolMitchell C. Taylor
    • H01L21/8232H01L21/335
    • H01L21/26506H01L21/26513H01L21/2658H01L21/26586H01L29/1045H01L29/1083H01L29/6659H01L29/7833
    • A method including implanting carbon and fluorine into a substrate in an area of the substrate between a source/drain region and a channel, the area designated for a source/drain extension; and a source/drain extension dopant following implanting carbon and fluorine, implanting phosphorous in the area. A method including disrupting a crystal lattice of a semiconductor substrate in an area of the substrate between a source/drain region and a channel designated for a source/drain extension; after disrupting, implanting carbon and fluorine in the area; and implanting phosphorous in the area. A method including performing a boron halo implant before implanting phosphorous to form N-type source/drain extensions. An apparatus including an N-type transistor having a source/drain extension comprising carbon and phosphorous, formed in an area of a substrate between a source/drain region of the transistor and a channel of the transistor.
    • 一种方法,包括在源极/漏极区域和沟道之间的衬底区域中注入碳和氟,指定用于源极/漏极延伸的区域; 以及在注入碳和氟之后的源极/漏极扩展掺杂剂,在该区域中注入磷。 一种方法,包括在源极/漏极区域和指定用于源极/漏极延伸的沟道之间的衬底区域中破坏半导体衬底的晶格; 破坏后,在该地区植入碳氟; 并在该区域植入磷。 一种方法,包括在注入磷之前进行硼卤素注入以形成N型源/漏扩展。 一种包括形成在晶体管的源极/漏极区域和晶体管的沟道之间的衬底的区域中的包括碳和磷的源极/漏极延伸的N型晶体管的装置。