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    • 71. 发明授权
    • Method of manufacturing a semiconductor device with reduced masking and without ARC loss in peripheral circuitry region
    • 制造半导体器件的方法,该半导体器件在外围电路区域中具有减小的掩蔽并且没有ARC损耗
    • US06197635B1
    • 2001-03-06
    • US09417130
    • 1999-10-13
    • Tommy C. HsaioMark T. RamsbeyYu Sun
    • Tommy C. HsaioMark T. RamsbeyYu Sun
    • H01L21336
    • H01L27/11526H01L27/105H01L27/11543
    • Improved dimensional accuracy of the gate electrode structure in the peripheral circuitry region of a semiconductor device is achieved by avoiding ARC loss during photoresist stripping associated with plural maskings in the core memory cell region during patterning and ion implantations. Processing is simplified by employing the same mask in the memory cell region for patterning the stacked gate electrode structure and for ion implanting the shallow source/drain extensions. Embodiments include initially etching to form the gate electrode structure in the peripheral circuitry region. Subsequently, processing in the core memory cell region is conducted by etching the stacked gate electrode structure and ion implanting to form the source/drains with attendant stripping of photoresist layers.
    • 半导体器件的外围电路区域中的栅电极结构的改进的尺寸精度通过在图案化和离子注入期间避免与芯存储器单元区域中的多个掩模相关联的光致抗蚀剂剥离期间的ARC损耗来实现。 通过在存储单元区域中采用相同的掩模来简化处理,用于图案化堆叠的栅电极结构和用于离子注入浅源/漏扩展。 实施例包括初始蚀刻以在外围电路区域中形成栅电极结构。 随后,通过蚀刻堆叠的栅极电极结构和离子注入来进行核心存储单元区域中的处理,以形成具有光刻胶层的伴随剥离的源极/漏极。
    • 72. 发明授权
    • Methods for forming nitrogen-rich regions in a floating gate and
interpoly dielectric layer in a non-volatile semiconductor memory device
    • 在非易失性半导体存储器件中的浮栅和互聚电介质层中形成富氮区的方法
    • US6001713A
    • 1999-12-14
    • US154074
    • 1998-09-16
    • Mark T. RamsbeyVei-Han ChanSameer HaddadChi ChangYu SunRaymond Yu
    • Mark T. RamsbeyVei-Han ChanSameer HaddadChi ChangYu SunRaymond Yu
    • H01L21/28H01L21/265
    • H01L21/28273
    • Methods are provided for significantly reducing electron trapping in semiconductor devices having a floating gate and an overlying dielectric layer. The methods form a nitrogen-rich region within the floating gate near the interface to an overlying dielectric layer. The methods include selectively introducing nitrogen into the floating gate prior to forming the overlying dielectric layer. This forms an initial nitrogen concentration profile within the floating gate. An initial portion of the overlying dielectric layer is then formed of a high temperature oxide (HTO). The temperature within the floating gate is purposely raised to an adequately high temperature to cause the initial nitrogen concentration profile to change due to the migration of the majority of the nitrogen towards the interface with the overlying dielectric layer and an interface with an underlying layer. Consequently, the floating gate is left with a first nitrogen-rich region near the interface to the overlying dielectric layer and a second nitrogen-rich region near the interface to the underlying layer. The first nitrogen-rich region has been found to reduce electron trapping within the floating gate, which could lead to false programming of the floating gate. Unlike a conventional thermally grown oxide film, the high temperature oxide film within the interpoly dielectric layer advantageously prevents the surface of the floating gate from becoming too granular. As such, the resulting interpoly dielectric layer, which typically includes several films, can be formed more evenly.
    • 提供了用于显着减少具有浮置栅极和上覆电介质层的半导体器件中的电子俘获的方法。 该方法在与上覆电介质层的界面附近的浮栅内形成富氮区。 所述方法包括在形成上覆电介质层之前将氮气选择性地引入浮栅。 这在浮动栅极内形成初始氮浓度分布。 然后由上覆电介质层的初始部分由高温氧化物(HTO)形成。 浮置栅极内的温度有意地升高到足够高的温度,以使得初始氮浓度分布由于大部分氮向与上覆介质层的界面的迁移以及与下层的界面而改变。 因此,浮置栅极在与上覆电介质层的界面附近的第一富氮区域和与下层的界面附近的第二富氮区域留下。 已经发现第一个富氮区域减少了浮动栅极内的电子俘获,这可能导致浮动栅极的错误编程。 与传统的热生长氧化膜不同,多聚电介质层内的高温氧化膜有利地防止浮栅的表面变得太细。 因此,可以更均匀地形成通常包括几个膜的所得到的互间介电层。
    • 78. 发明授权
    • Anti-reflective interpoly dielectric
    • 防反射层间电介质
    • US07964905B1
    • 2011-06-21
    • US09591266
    • 2000-06-09
    • Robert B. Ogle, Jr.Marina V. PlatMark T. Ramsbey
    • Robert B. Ogle, Jr.Marina V. PlatMark T. Ramsbey
    • H01L29/94
    • H01L29/518H01L21/28273H01L29/42324H01L29/513
    • The invention provides core stacks for flash memory with an anti-reflective interpoly dielectric. Instead of requiring an anti-reflective coating at the top of the a stack, the present invention uses the interpoly layer as an anti-reflective coating in conjunction with a transmissive second polymer layer. Light is transmitted through the transmissive second polymer layer to the anti-reflective interpoly dielectric layer. The transmissive second polymer layer is formed from an amorphous silicon or polysilicon. Silicon oxynitride (SiON), as formed in the present invention, having a good dielectric constant K, is tailored in its index of refraction and in its thickness for utilization as both a good interpoly material and an anti-reflective coating.
    • 本发明提供了具有抗反射互聚电介质的闪存的核心堆叠。 代替在堆叠的顶部需要抗反射涂层,本发明使用互聚层作为与透射性第二聚合物层结合的抗反射涂层。 光通过透射的第二聚合物层传输到抗反射的多聚电介质层。 透射的第二聚合物层由非晶硅或多晶硅形成。 在本发明中形成的具有良好的介电常数K的氮氧化硅(SiON)在其折射率和其厚度方面被适应为良好的间隙材料和抗反射涂层。