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    • 2. 发明授权
    • Self-aligned contact structures using high selectivity etching
    • 使用高选择性蚀刻的自对准接触结构
    • US06172411B2
    • 2001-01-09
    • US09208921
    • 1998-12-10
    • Li-chih ChaoJhon-Jhy LiawYuan-Chang HuangJin-Yuan Lee
    • Li-chih ChaoJhon-Jhy LiawYuan-Chang HuangJin-Yuan Lee
    • H01L27088
    • H01L21/76897H01L21/31116Y10S257/90
    • A self-aligned structure and method of etching contact holes in the self-aligned structure are described. The dielectric materials, etching methods, and etchants are chosen to provide high selectivity etching. The structure comprises an electrode with a silicon oxy-nitride cap and silicon oxy-nitride spacers on the sidewalls of the electrode and the cap. An etch stop layer of silicon nitride is deposited over the substrate covering the spacers and cap. A layer of silicon oxide is deposited over the etch stop layer. Etching methods and etchants are used which provide a ratio of the etching rate of silicon oxide to the etching rate of silicon nitride or silicon oxy-nitride of at least eight and a ratio of the etching rate of silicon nitride to the etching rate of silicon oxy-nitride of at least two.
    • 描述了自对准结构和蚀刻自对准结构中的接触孔的方法。 选择介电材料,蚀刻方法和蚀刻剂以提供高选择性蚀刻。 该结构包括在电极和盖的侧壁上具有氮氧化硅帽和氮氧化硅间隔物的电极。 氮化硅的蚀刻停止层沉积在覆盖间隔物和盖的衬底上。 氧化硅层沉积在蚀刻停止层上。 使用蚀刻方法和蚀刻剂,其提供氧化硅的蚀刻速率与氮化硅或氮氧化硅的蚀刻速率的比率至少为8,氮化硅的蚀刻速率与硅氧化物的蚀刻速率的比率 至少两个。
    • 3. 发明授权
    • Method for monitoring self-aligned contact etching
    • 监测自对准接触蚀刻的方法
    • US06184149B2
    • 2001-02-06
    • US08918315
    • 1997-08-26
    • Li-Chih ChaoYuan-Chang Huang
    • Li-Chih ChaoYuan-Chang Huang
    • H01L21302
    • H01L21/76897H01L21/31116H01L22/20
    • The present invention provides a method for monitoring a self-aligned contact (SAC) etching process. A wafer with an oxide layer serves as an oxide control wafer. The oxide layer is formed on the substrate. The oxide control wafer and a SAC wafer with SAC structure are simultaneously treated with a SAC etching process in an etching chamber with the same etching recipe. A contact hole is formed by etching the oxide layer of the oxide control wafer after the SAC etching process. The depth of a profile transition point and the depth of etching stop for the oxide control wafer can be observed by cross-section SEM. The profile transition depth in the oxide control wafer corresponds to the etching thickness of SiN corner loss in the SAC wafer. Therefore, the profile transition depth and the depth of etching stop in the oxide control wafer can be used to monitor the etching chamber condition.
    • 本发明提供一种用于监测自对准接触(SAC)蚀刻工艺的方法。 具有氧化物层的晶片用作氧化物控制晶片。 在基板上形成氧化物层。 具有SAC结构的氧化物控制晶片和SAC晶片在蚀刻室中用SAC蚀刻工艺同时用相同的蚀刻配方进行处理。 在SAC蚀刻工艺之后通过蚀刻氧化物控制晶片的氧化物层形成接触孔。 通过横截面SEM可以观察到轮廓转变点的深度和氧化物控制晶片的蚀刻停止深度。 氧化物控制晶片中的轮廓转移深度对应于SAC晶片中SiN角损失的蚀刻厚度。 因此,可以使用氧化物控制晶片中的轮廓转移深度和蚀刻停止深度来监测蚀刻室状况。
    • 10. 发明授权
    • Use of a novel capped anneal procedure to improve salicide formation
    • 使用新型封端退火方法来改善自杀化合物的形成
    • US06211083B1
    • 2001-04-03
    • US09550263
    • 2000-04-17
    • Jiunn-Der YangChaucer ChungYuan-Chang Huang
    • Jiunn-Der YangChaucer ChungYuan-Chang Huang
    • H01L214763
    • H01L29/665H01L21/28518
    • A process for forming a low resistance, titanium disilicide layer, on regions of a MOSFET device, has been developed. The process features the deposition of a capping, silicon oxide layer, on first phase, high resistance, titanium disilicide regions. The capping, silicon oxide layer, featuring a compressive stress, reduces the risk of titanium disilicide regions, formed with a tensile stress, from adhesion loss, or peeling, from underlying regions of the MOSFET device, such as from the top surface of a narrow width, polysilicon gate structure. In addition the capping silicon oxide layer protects underlying titanium disilicide regions from the ambient used during the anneal cycle used to convert the first phase, high resistance, titanium disilicide region, to the second phase, low resistance, titanium disilicide region.
    • 已经开发了在MOSFET器件的区域上形成低电阻二硅化钛层的工艺。 该方法的特征在于在第一相,高电阻,二硅化钛区域上沉积封盖的氧化硅层。 封装,氧化硅层具有压缩应力,降低了形成有拉伸应力的二硅化钛区域从MOSFET器件的下面区域的粘附损失或剥离的风险,例如从狭窄的顶部表面 宽度,多晶硅栅结构。 此外,封盖氧化硅层保护下游的二硅化钛区域与用于将第一相,高电阻,二硅化钛区域转化为第二相,低电阻,二硅化钛区域的退火循环期间使用的环境。