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    • 41. 发明授权
    • Deep bitline implant to avoid program disturb
    • 深位线植入,以避免程序干扰
    • US07671405B2
    • 2010-03-02
    • US11646157
    • 2006-12-26
    • Timothy ThurgateYi HeMing-Sang KwanZhizheng LiuXuguang Wang
    • Timothy ThurgateYi HeMing-Sang KwanZhizheng LiuXuguang Wang
    • H01L27/112H01L21/336
    • H01L27/11568G11C5/02G11C5/06H01L27/115
    • A method of forming at least a portion of a dual bit memory core array upon a semiconductor substrate, the method comprising performing front end processing, performing a first bitline implant, or pocket implants, or both into the first bitline spacings to establish buried first bitlines within the substrate, depositing a layer of the spacer material over the charge trapping dielectric and the polysilicon layer features, forming a sidewall spacer adjacent to the charge trapping dielectric and the polysilicon layer features to define second bitline spacings between adjacent memory cells, performing a deep arsenic implant into the second bitline spacings to establish a second bitline within the structure that is deeper than the first bit line, removing the sidewall spacers and performing back end processing.
    • 一种在半导体衬底上形成双位存储器核心阵列的至少一部分的方法,所述方法包括执行前端处理,执行第一位线注入或袋式注入或二者进入第一位线间隔以建立掩埋的第一位线 在衬底内,在电荷俘获电介质和多晶硅层特征之上沉积间隔物材料层,形成与电荷俘获电介质相邻的侧壁隔离层和多晶硅层特征以限定相邻存储器单元之间的第二位线间隔,执行深度 砷注入到第二位线间隔中,以在结构内建立比第一位线更深的第二位线,去除侧壁间隔件并执行后端处理。