会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 9. 发明授权
    • METHOD FOR MANUFACTURING A SEMICONDUCTOR MEMORY
    • 一种用于生产半导体存储器
    • EP0920054B1
    • 2006-11-02
    • EP97929524.3
    • 1997-07-04
    • Hitachi, Ltd.
    • MIKI, HiroshiKUSHIDA, KeikoFUJISAKI, Yoshihisa
    • H01L21/8242H01L27/108H01L21/02
    • H01L28/56H01L21/02197H01L21/02323H01L21/0234H01L28/75
    • A semiconductor memory which is improved in reliability by preventing the lowering of capacitance and defective insulation, especially, electrode separation caused by the formation of the passivation film (insulating film) of a capacitor using a high ferroelectric material by plasma processing at a relatively low temperature and a method for manufacturing the memory. The semiconductor memory has an integrated capacitor composed of a capacitor structure constituted of an upper electrode (105), a lower electrode (102), and a high ferroelectric oxide thin film (103) which is held between electrodes (105 and 102) and serves as a capacitor insulating film and an insulating protective film (106) which covers the capacitor structure and is formed by plasma processing. An oxygen introducing layer (104) is further formed on the surface of the thin film (103) constituting the capacitor insulating film. In the manufacturing process of the memory, for example, the oxygen introducing layer (104) is formed on the surface of the high ferroelectric material (103) by introducing oxygen to the boundary between the electrode (105) and the material (103) by conducting heat treatment in an oxygen atmosphere before the protective insulating film (SiO2 passivation film) (106) is formed by plasma processing after the formation of the electrode (105). Therefore, lowering of capacitance, defective insulation, and especially, electrode separation, which are caused by the formation of the passivation film (insulating film), can be prevented. In addition, the occurrence of defective insulation can be reduced by suppressing the lowering of the capacitance when an alternating electric field is impressed. When a ferroelectric material is used as the dielectric film, moreover, such an effect as an increase in residual polarization, a decrease in coercive voltage, etc., can be obtained.
    • 10. 发明公开
    • SILICON OXIDE PATTERNING USING CVD PHOTORESIST
    • 使用CVD光刻机进行氧化硅图案化
    • EP1320877A2
    • 2003-06-25
    • EP01964510.0
    • 2001-08-30
    • Infineon Technologies North America Corp.
    • LEE, Gill
    • H01L21/312
    • H01L21/02126H01L21/02167H01L21/02211H01L21/02274H01L21/02304H01L21/02323H01L21/02337H01L21/02348H01L21/02362H01L21/3122
    • An integrated circuit, and method of forming thereof, in which a CVD photoresist (e.g., PPMS) is formed on a substrate (e.g., silicon 200), patterned and converted into silicon oxide, and is left on the substrate to function as a silicon oxide layer (e.g., PPMSO 204). A high quality cap layer (e.g., PECVD silicon oxide 206) may then be formed over the lower quality silicon oxide layer utilizing a maskless etch process. A high quality silicon oxide layer may be formed on the substrate prior to formation of the CVD photoresist layer to provide a buffer underneath the lower quality silicon oxide. Because etch selectivity is generally not required for the photoresist layer, a thinner photoresist may be used than that of prior art techniques, permitting a larger lithographic process window, increased depth of focus, and a more robust process.
    • 一种集成电路及其形成方法,其中在衬底(例如,硅200)上形成CVD光致抗蚀剂(例如PPMS),将其图案化并转化为氧化硅,并留在衬底上以充当硅 氧化物层(例如,PPMSO 204)。 然后可以利用无掩模蚀刻工艺在较低质量的氧化硅层上形成高质量盖层(例如,PECVD氧化硅206)。 可以在形成CVD光致抗蚀剂层之前在衬底上形成高质量的氧化硅层,以在较低质量的氧化硅下提供缓冲剂。 因为光致抗蚀剂层通常不需要蚀刻选择性,所以可以使用比现有技术更薄的光致抗蚀剂,允许更大的光刻工艺窗口,增加的焦深以及更稳健的工艺。