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    • 81. 发明申请
    • THIN-BOX METAL BACKGATE EXTREMELY THIN SOI DEVICE
    • 薄盒金属背板超薄SOI器件
    • US20110227159A1
    • 2011-09-22
    • US12724555
    • 2010-03-16
    • Kevin K. ChanZhibin RenXinhui Wang
    • Kevin K. ChanZhibin RenXinhui Wang
    • H01L27/12H01L21/762
    • H01L29/7827H01L21/7624H01L29/66628H01L29/66772H01L29/78603H01L29/78645H01L29/78648H01L29/78696
    • Silicon-on-insulator (SOI) structures with silicon layers less than 20 nm thick are used to form extremely thin silicon-on-insulator (ETSOI) semiconductor devices. ETSOI devices are manufactured using a thin tungsten backgate encapsulated by thin nitride layers to prevent metal oxidation, the tungsten backgate being characterized by its low resistivity. The structure further includes at least one FET having a gate stack formed by a high-K metal gate and a tungsten region superimposed thereon, the footprint of the gate stack utilizing the thin SOI layer as a channel. The SOI structure thus formed controls the Vt variation from the thin SOI thickness and dopants therein. The ETSOI high-K metal backgate fully depleted device in conjunction with the thin BOX provides an excellent short channel control and significantly lowers the drain induced bias and sub-threshold swings. The present structure supports the evidence of the stability of the wafer having a tungsten film during thermal processing, and especially during STI and contact formation.
    • 使用具有小于20nm厚的硅层的绝缘体上硅(SOI)结构来形成极薄的绝缘体上硅(ETSOI)半导体器件。 ETSOI器件使用由薄氮化物层封装的薄钨背栅来制造,以防止金属氧化,钨背栅的特征在于其低电阻率。 该结构还包括至少一个FET,其具有由高K金属栅极和叠加在其上的钨区域形成的栅极堆叠,栅极堆叠的占用面积利用薄SOI层作为沟道。 这样形成的SOI结构控制了薄SOI厚度和其中的掺杂剂的Vt变化。 ETSOI高K金属后盖完全耗尽器件与薄BOX结合,提供了出色的短通道控制,显着降低了漏极引起的偏置和次阈值摆幅。 本结构支持在热处理期间具有钨膜的晶片的稳定性的证据,特别是在STI和接触形成期间。
    • 84. 发明申请
    • METHOD FOR MANUFACTURING A FINFET DEVICE
    • 制造FINFET器件的方法
    • US20110027948A1
    • 2011-02-03
    • US12533389
    • 2009-07-31
    • Zhibin RenXinhui WangKevin K. ChanYing Zhang
    • Zhibin RenXinhui WangKevin K. ChanYing Zhang
    • H01L21/336
    • H01L29/66795H01L29/785
    • A method for manufacturing a FinFET device includes: providing a substrate having a mask disposed thereon; covering portions of the mask to define a perimeter of a gate region; removing uncovered portions of the mask to expose the substrate; covering a part of the exposed substrate with another mask to define at least one fin region; forming the at least one fin and the gate region through both masks and the substrate, the gate region having side walls; disposing insulating layers around the at least one fin and onto the side walls; disposing a conductive material into the gate region and onto the insulating layers to form a gate electrode, and then forming source and drain regions.
    • 一种制造FinFET器件的方法包括:提供其上设置有掩模的衬底; 覆盖掩模的部分以限定栅极区域的周边; 去除所述掩模的未覆盖部分以暴露所述基底; 用另一掩模覆盖暴露的基底的一部分以限定至少一个鳍片区域; 通过所述掩模和所述基板形成所述至少一个翅片和所述栅极区域,所述栅极区域具有侧壁; 将所述至少一个翅片周围的绝缘层设置在所述侧壁上; 将导电材料设置在栅极区域和绝缘层上以形成栅电极,然后形成源极和漏极区域。
    • 90. 发明授权
    • Split poly-SiGe/poly-Si alloy gate stack
    • 分离多晶硅/多晶硅合金栅叠层
    • US07378336B2
    • 2008-05-27
    • US11124978
    • 2005-05-09
    • Kevin K. ChanJia ChenShih-Fen HuangEdward J. Nowak
    • Kevin K. ChanJia ChenShih-Fen HuangEdward J. Nowak
    • H01L21/3205
    • H01L21/2807H01L21/28052H01L21/28061H01L21/823835H01L21/823842H01L29/4916H01L29/4925H01L29/665
    • A multi-layered gate electrode stack structure of a field effect transistor device is formed on a silicon nano crystal seed layer on the gate dielectric. The small grain size of the silicon nano crystal layer allows for deposition of a uniform and continuous layer of poly-SiGe with a [Ge] of up to at least 70% using in situ rapid thermal chemical vapor deposition (RTCVD). An in-situ purge of the deposition chamber in a oxygen ambient at rapidly reduced temperatures results in a thin SiO2 or SixGeyOz interfacial layer of 3 to 4 A thick. The thin SiO2 or SixGeyOz interfacial layer is sufficiently thin and discontinuous to offer little resistance to gate current flow yet has sufficient [O] to effectively block upward Ge diffusion during heat treatment to thereby allow silicidation of the subsequently deposited layer of cobalt. The gate electrode stack structure is used for both nFETs and pFETs.
    • 在栅极电介质上的硅纳米晶种子层上形成场效应晶体管器件的多层栅电极堆叠结构。 硅纳米晶体层的小晶粒尺寸允许使用原位快速热化学气相沉积(RTCVD)沉积高达至少70%的[Ge]的均匀且连续的多晶硅层。 在快速降低的温度下在氧气环境中原位吹扫沉积室导致薄的SiO 2或Si x O x O O 3至4厚的界面层。 薄的SiO 2或Si x Si 2 O 3界面层足够薄且不连续以提供很小的电阻 到栅极电流仍具有足够的[O]以在热处理期间有效地阻挡Ge扩散,从而允许后续沉积的钴的硅化物。 栅电极堆叠结构用于nFET和pFET两者。