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    • 2. 发明申请
    • Method for forming a buried diffusion layer with reducing topography in a surface of a semiconductor substrate
    • 用于在半导体衬底的表面中形成具有减小的形貌的掩埋扩散层的方法
    • US20060154441A1
    • 2006-07-13
    • US11032045
    • 2005-01-11
    • Cheng-Ming YihHuei-Huarng ChenHsuan-Ling Kao
    • Cheng-Ming YihHuei-Huarng ChenHsuan-Ling Kao
    • H01L21/76
    • H01L27/115H01L27/11521
    • A method for forming a buried diffusion layer with reducing topography in a surface of a semiconductor substrate is provided. A patterned first dielectric layer is formed on a semiconductor substrate for being used as a first hard mask. A thermal oxidation process is performed to form field oxides on the exposed potions of the semiconductor substrate. The patterned first dielectric layer is then removed. A second patterned dielectric layer is formed on the field oxides and the semiconductor substrate for being used as a second hard mask. An isotropic etching process is performed to etch the exposed portions of the field oxides and the semiconductor substrate. The patterned second dielectric layer and the underlying field oxides are removed to form a plurality of trenches on the surface of the semiconductor substrate. A buried diffusion layer is formed along surroundings of the trenches in the semiconductor substrate.
    • 提供一种在半导体衬底的表面中形成具有减小的形貌的掩埋扩散层的方法。 图案化的第一介电层形成在半导体衬底上用作第一硬掩模。 进行热氧化处理以在半导体衬底的暴露的部分上形成场氧化物。 然后去除图案化的第一介电层。 在场氧化物和半导体衬底上形成用作第二硬掩模的第二图案化电介质层。 执行各向同性蚀刻工艺以蚀刻场氧化物和半导体衬底的暴露部分。 图案化的第二介电层和下面的场氧化物被去除以在半导体衬底的表面上形成多个沟槽。 沿着半导体衬底中的沟槽的周围形成掩埋扩散层。
    • 3. 发明授权
    • Method for forming a buried diffusion layer with reducing topography in a surface of a semiconductor substrate
    • 用于在半导体衬底的表面中形成具有减小的形貌的掩埋扩散层的方法
    • US07244661B2
    • 2007-07-17
    • US11032045
    • 2005-01-11
    • Cheng-Ming YihHuei-Huarng ChenHsuan-Ling Kao
    • Cheng-Ming YihHuei-Huarng ChenHsuan-Ling Kao
    • H01L21/76
    • H01L27/115H01L27/11521
    • A method for forming a buried diffusion layer with reducing topography in a surface of a semiconductor substrate is provided. A patterned first dielectric layer is formed on a semiconductor substrate for being used as a first hard mask. A thermal oxidation process is performed to form field oxides on the exposed potions of the semiconductor substrate. The patterned first dielectric layer is then removed. A second patterned dielectric layer is formed on the field oxides and the semiconductor substrate for being used as a second hard mask. An isotropic etching process is performed to etch the exposed portions of the field oxides and the semiconductor substrate. The patterned second dielectric layer and the underlying field oxides are removed to form a plurality of trenches on the surface of the semiconductor substrate. A buried diffusion layer is formed along surroundings of the trenches in the semiconductor substrate.
    • 提供一种在半导体衬底的表面中形成具有减小的形貌的掩埋扩散层的方法。 图案化的第一介电层形成在半导体衬底上用作第一硬掩模。 进行热氧化处理以在半导体衬底的暴露的部分上形成场氧化物。 然后去除图案化的第一介电层。 在场氧化物和半导体衬底上形成用作第二硬掩模的第二图案化电介质层。 执行各向同性蚀刻工艺以蚀刻场氧化物和半导体衬底的暴露部分。 图案化的第二介电层和下面的场氧化物被去除以在半导体衬底的表面上形成多个沟槽。 沿着半导体衬底中的沟槽的周围形成掩埋扩散层。
    • 8. 发明授权
    • Method of fabricating memory
    • 制造记忆的方法
    • US08043908B2
    • 2011-10-25
    • US12851790
    • 2010-08-06
    • Cheng-Ming Yih
    • Cheng-Ming Yih
    • H01L21/8238
    • H01L29/7881H01L21/28247H01L21/28273H01L29/42324
    • A method of fabricating a semiconductor device is provided. First, a stacked structure is formed on a substrate. The stacked structure includes, from the substrate, a dielectric layer and a conductive gate in order. An ion implant process is performed to form doped regions in the substrate on the opposite sides of the stacked structure. Thereafter, source-side spacer is formed on a sidewall of the stacked structure. A thermal process is performed to activate the doped regions, thereby forming a source in the substrate under the sidewall of the stacked structure having the source-side spacer and a drain in the substrate on another side of the stacked structure.
    • 提供一种制造半导体器件的方法。 首先,在基板上形成层叠结构。 叠层结构依次包括介质层和导电栅极。 执行离子注入工艺以在层叠结构的相对侧上的衬底中形成掺杂区域。 此后,在层叠结构的侧壁上形成源极间隔物。 执行热处理以激活掺杂区域,从而在层叠结构的侧壁的衬底内形成源,该层的结构具有源极侧隔离物和衬底中位于堆叠结构另一侧的漏极。
    • 9. 发明申请
    • Low-k spacer structure for flash memory
    • 用于闪存的Low-k间隔结构
    • US20070042544A1
    • 2007-02-22
    • US11204537
    • 2005-08-16
    • Chu-Ching WuCheng-Ming Yih
    • Chu-Ching WuCheng-Ming Yih
    • H01L21/336
    • H01L29/6656H01L21/28273H01L29/42324H01L29/66825H01L29/7881
    • A flash memory cell includes a silicon substrate having a main surface, a source region in a portion of the silicon substrate proximate the main surface and a drain region in a portion of the silicon substrate proximate the main surface. The drain region is spaced apart from the source region. The memory cell includes a first dielectric layer formed on the main surface, a floating gate disposed above the first dielectric layer, an inter-gate dielectric layer disposed above the floating gate, a control gate disposed above the inter-gate dielectric layer, a second dielectric layer and a low-k dielectric spacer layer disposed on the second dielectric layer. The first dielectric layer covers a portion of the main surface between the source and the drain. The second dielectric layer surrounds outer portions of the first dielectric layer, the control gate, the inter-gate dielectric layer and the floating gate.
    • 闪存单元包括具有主表面的硅衬底,位于主表面附近的硅衬底的一部分中的源极区域和位于主表面附近的硅衬底的一部分中的漏极区域。 漏极区域与源极区域间隔开。 所述存储单元包括形成在所述主表面上的第一介电层,设置在所述第一介电层上方的浮置栅极,设置在所述浮置栅极上方的栅极间电介质层,设置在所述栅极间电介质层上方的控制栅极, 电介质层和设置在第二电介质层上的低k电介质间隔层。 第一电介质层覆盖源极和漏极之间的主表面的一部分。 第二电介质层围绕第一电介质层,控制栅极,栅极间电介质层和浮置栅极的外部部分。