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    • 73. 发明申请
    • HIGH DENSITY TRENCH MOSFET WITH SINGLE MASK PRE-DEFINED GATE AND CONTACT TRENCHES
    • 高密度TRENCH MOSFET,具有单面罩预定门和接触孔
    • US20100190307A1
    • 2010-07-29
    • US12362414
    • 2009-01-29
    • Yeeheng LeeHong ChangTiesheng LiJohn ChenAnup Bhalla
    • Yeeheng LeeHong ChangTiesheng LiJohn ChenAnup Bhalla
    • H01L21/336
    • H01L29/66621H01L21/26586H01L29/4236H01L29/78
    • Trench gate MOSFET devices may be formed using a single mask to define gate trenches and body contact trenches. A hard mask is formed on a surface of a semiconductor substrate. A trench mask is applied on the hard mask to predefine a body contact trench and a gate trench. These predefined trenches are simultaneously etched into the substrate to a first predetermined depth. A gate trench mask is next applied on top of the hard mask. The gate trench mask covers the body contact trenches and has openings at the gate trenches that are wider than those trenches. The gate trench, but not the body contact trench, is etched to a second predetermined depth. Conductive material of a first kind may fill the gate trench to form a gate. Conductive material of a second kind may fill the body contact trench to form a body contact.
    • 沟槽栅极MOSFET器件可以使用单个掩模形成以限定栅极沟槽和主体接触沟槽。 在半导体基板的表面上形成硬掩模。 在硬掩模上施加沟槽掩模以预定义接触沟槽和栅极沟槽。 这些预定沟槽同时被蚀刻到衬底中到达第一预定深度。 接下来将栅极沟槽掩模施加在硬掩模的顶部上。 栅极沟槽掩模覆盖主体接触沟槽,并且在栅极沟槽处具有比那些沟槽更宽的开口。 栅极沟槽而不是体接触沟槽被蚀刻到第二预定深度。 第一种导电材料可以填充栅沟以形成栅极。 第二种导电材料可以填充身体接触沟槽以形成身体接触。
    • 74. 发明授权
    • Metal hard mask method and structure for strained silicon MOS transistors
    • 应变硅MOS晶体管的金属硬掩模方法和结构
    • US07709336B2
    • 2010-05-04
    • US11321767
    • 2005-12-28
    • Xian J. NingHanming WuJohn Chen
    • Xian J. NingHanming WuJohn Chen
    • H01L21/336
    • H01L29/7848H01L21/3081H01L21/32139H01L29/165H01L29/66628H01L29/66636
    • A semiconductor integrated circuit device. The device has a semiconductor substrate and a dielectric layer overlying the semiconductor substrate. The device also has a gate structure including edges. A metal hard mask layer is overlying the gate structure. A dielectric layer is formed sidewall spacers on the edges of the gate structure to protect the gate structure including the edges. An exposed portion of the metal hard mask layer is overlying the gate structure. A silicon germanium fill material is provided in an etched source region and an etched drain region. The etched source region and the etched drain region are each coupled to the gate structure. The device has a strained channel region between the filled source region and the filled drain region from at least the silicon germanium material formed in the etched source region and the etched drain region. An electrical connection is coupled to the metal hard mask overlying the gate structure. Optionally, the device has a second metal layer overlying the metal hard mask.
    • 半导体集成电路器件。 该器件具有覆盖半导体衬底的半导体衬底和电介质层。 该装置还具有包括边缘的门结构。 金属硬掩模层覆盖栅极结构。 电介质层在门结构的边缘上形成侧墙,以保护包括边缘的栅结构。 金属硬掩模层的暴露部分覆盖栅极结构。 在蚀刻源区域和蚀刻漏极区域中提供硅锗填充材料。 蚀刻的源极区域和蚀刻的漏极区域各自耦合到栅极结构。 该器件在至少形成在蚀刻源极区域和蚀刻漏极区域中的硅锗材料之间具有在填充源极区域和填充的漏极区域之间的应变通道区域。 电连接耦合到覆盖栅极结构的金属硬掩模。 可选地,该装置具有覆盖金属硬掩模的第二金属层。
    • 78. 发明申请
    • ETCHING METHOD AND STRUCTURE USING A HARD MASK FOR STRAINED SILICON MOS TRANSISTORS
    • 使用用于应变硅MOS晶体管的硬掩模的蚀刻方法和结构
    • US20080119032A1
    • 2008-05-22
    • US11609748
    • 2006-12-12
    • John ChenHanming WuDa Wei GaoBei ZhuPaolo Bonfanti
    • John ChenHanming WuDa Wei GaoBei ZhuPaolo Bonfanti
    • H01L21/3205
    • H01L29/7848H01L29/165H01L29/66628H01L29/66636Y10S438/938
    • A method for forming an strained silicon integrated circuit device. The method includes providing a semiconductor substrate and forming a dielectric layer overlying the semiconductor substrate. The method also includes forming a gate layer overlying the dielectric layer and forming a hard mask overlying the gate layer. The method patterns the gate layer to form a gate structure including edges using the hard mask as a protective layer. The method forms a dielectric layer overlying the gate structure to protect the gate structure including the edges. The method forms spacers from the dielectric layer, while maintaining the hard mask overlying the gate structure. The method etches a source region and a drain region adjacent to the gate structure using the dielectric layer and the hard mask as a protective layer, while the hard mask prevents any portion of the gate structure from being exposed. In a preferred embodiment, the method maintains the hard mask overlying the gate structure. The method includes depositing silicon germanium material into the source region and the drain region to fill the etched source region and the etched drain region, while maintaining any portion of the gate layer from being exposed using the hard mask such that the gate structure is substantially free from any permanent deposition of silicon germanium material, which causes a channel region between the source region and the drain region to be strained in compressive mode from at least the silicon germanium material formed in the source region and the drain region. In a preferred embodiment, the method removing the hard mask from the gate structure to expose a top portion of the gate structure and maintains the top portion of the gate structure being substantially free from any silicon germanium material.
    • 一种形成应变硅集成电路器件的方法。 该方法包括提供半导体衬底并形成覆盖半导体衬底的电介质层。 该方法还包括形成覆盖在电介质层上的栅极层,并形成覆盖栅极层的硬掩模。 该方法使栅极层形成包括使用硬掩模的边缘作为保护层的栅极结构。 该方法形成覆盖栅极结构的电介质层,以保护包括边缘的栅极结构。 该方法从电介质层形成间隔物,同时保持覆盖栅极结构的硬掩模。 该方法使用电介质层和硬掩模作为保护层来蚀刻与栅极结构相邻的源极区域和漏极区域,同时硬掩模防止栅极结构的任何部分暴露。 在优选实施例中,该方法保持覆盖栅极结构的硬掩模。 该方法包括将硅锗材料沉积到源极区域和漏极区域中以填充蚀刻的源极区域和蚀刻的漏极区域,同时保持栅极层的任何部分不被使用硬掩模曝光,使得栅极结构基本上是空的 来自硅锗材料的任何永久性沉积,其使得源极区域和漏极区域之间的沟道区域至少在形成于源极区域和漏极区域中的硅锗材料以压缩模式应变。 在优选实施例中,该方法从栅极结构去除硬掩模以露出栅极结构的顶部并且保持栅极结构的顶部基本上不含任何硅锗材料。
    • 79. 发明申请
    • Wet Scrubbing and Recycle of Effluent-Contaminating Catalyst Particles in an Oxygenate-to-Olefin Process
    • 污水 - 污染催化剂颗粒在氧化烯 - 烯烃工艺中的湿法洗涤和回收
    • US20080114197A1
    • 2008-05-15
    • US12014400
    • 2008-01-15
    • Bradford BjorklundJohn Chen
    • Bradford BjorklundJohn Chen
    • C07C1/26
    • C07C1/20C07C2529/85C10G3/49C10G3/57C10G2300/4081C10G2300/805C10G2400/20Y02P20/584Y02P30/20Y02P30/42C07C11/02
    • The economics of a catalytic process using a fluidized conversion zone and a relatively expensive catalyst for converting an oxygenate to light olefins are substantially improved by recovering and recycling effluent contaminating catalyst particles from the product effluent stream withdrawn from the conversion zone which are present despite the use of one or more vapor-solid cyclone separating means to clean up this effluent stream. The contaminating catalyst particles are separated from this product effluent stream using a wet scrubbing zone and an optional dewatering zone to recover a slurry containing the contaminated particles which, quite surprisingly, can be successfully directly recycled to the oxygenate conversion zone or to the associated catalyst regeneration zone without loss of any substantial amount of catalytic activity thereby decreasing the amount of fresh catalyst addition required to make up for this source of catalyst loss.
    • 使用流化转化区的催化方法的经济性和用于将含氧化合物转化成轻质烯烃的相对昂贵的催化剂的经济性通过回收和再循环流出物污染的催化剂颗粒而得到显着改善,所述流出物污染的催化剂颗粒从转化区提取的产物流出物流中, 的一种或多种蒸汽 - 固体旋风分离装置,以清理该流出物流。 使用湿式洗涤区和任选的脱水区将污染的催化剂颗粒与该产物流出物流分离,以回收含有污染颗粒的浆料,这相当令人惊奇地可以成功地直接再循环到含氧化合物转化区或相关联的催化剂再生 区,而不会损失任何相当大量的催化活性,从而减少了弥补该催化剂损失源所需的新鲜催化剂添加量。