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    • 3. 发明授权
    • Semiconductor device structure including a tantalum pentoxide layer sandwiched between silicon nitride layers
    • 包括夹在氮化硅层之间的五氧化二钽层的半导体器件结构
    • US06482694B2
    • 2002-11-19
    • US09878657
    • 2001-06-11
    • Sailesh ChittipeddiCharles Walter Pearce
    • Sailesh ChittipeddiCharles Walter Pearce
    • H01L218242
    • H01L28/40H01L21/3144H01L21/31604H01L21/3185H01L27/0805H01L27/1085
    • An insulating structure includes a first silicon nitride layer, a tantalum pentoxide layer formed above the first silicon nitride (SiNx) layer, and a second silicon nitride layer formed above the tantalum pentoxide (Ta2O5) layer. The SiNx cladding layers prevent diffusion of the tantalum during heating. A high dielectric constant is provided. The thermal stability of the insulating structure is improved. The insulating structure may be included in a capacitor or a shallow trench isolation structure. An exemplary capacitor is formed with a substrate, a lower electrode, the three-layer SixNy/Ta2O5/SixNy structure and an upper electrode. The lower electrode may include a TiN layer formed over an aluminum layer, or a TiN layer formed over a polysilicon layer, or a polysilicon layer having an oxide barrier layer formed on it. The upper electrode may be a TiN layer or a polysilicon layer. An exemplary shallow trench isolation structure includes the SixNy/Ta2O5/SixNy structure as a liner on the sides and bottom of a shallow trench in the surface of a substrate. The shallow trench is filled with an oxide, such as TEOS. A variety of methods may be used for fabricating devices that include the SixNy/Ta2O5/SixNy structure.
    • 绝缘结构包括第一氮化硅层,形成在第一氮化硅(SiNx)层上方的五氧化二钽层和形成在五氧化二钽(Ta2O5)上方的第二氮化硅层。 SiNx覆层在加热期间防止钽的扩散。 提供高介电常数。 绝缘结构的热稳定性提高。 绝缘结构可以包括在电容器或浅沟槽隔离结构中。 示例性电容器由基板,下电极,三层SixNy / Ta2O5 / SixNy结构和上电极形成。 下电极可以包括在铝层上形成的TiN层,或者形成在多晶硅层上的TiN层,或者在其上形成有氧化物阻挡层的多晶硅层。 上电极可以是TiN层或多晶硅层。 示例性的浅沟槽隔离结构包括作为衬底在衬底表面的浅沟槽的侧面和底部上的SixNy / Ta2O5 / SixNy结构。 浅沟槽中填充有氧化物,如TEOS。 可以使用各种方法来制造包括SixNy / Ta2O5 / SixNy结构的器件。
    • 4. 发明授权
    • Semiconductor device structure including a tantalum pentoxide layer sandwiched between silicon nitride layers
    • 包括夹在氮化硅层之间的五氧化二钽层的半导体器件结构
    • US06294807B1
    • 2001-09-25
    • US09259001
    • 1999-02-26
    • Sailesh ChittipeddiCharles Walter Pearce
    • Sailesh ChittipeddiCharles Walter Pearce
    • H01L27108
    • H01L28/40H01L21/3144H01L21/31604H01L21/3185H01L27/0805H01L27/1085
    • An insulating structure includes a first silicon nitride layer, a tantalum pentoxide layer formed above the first silicon nitride (SiNx) layer, and a second silicon nitride layer formed above the tantalum pentoxide (Ta2O5) layer. The SiNx cladding layers prevent difflusion of the tantalum during heating. A high dielectric constant is provided. The thermal stability of the insulating structure is improved. The insulating structure may be included in a capacitor or a shallow trench isolation structure. An exemplary capacitor is formed with a substrate, a lower electrode, the three-layer SixNy/Ta2O5/SixNy structure and an upper electrode. The lower electrode may include a TiN layer formed over an aluminum layer, or a TiN layer formed over a polysilicon layer, or a polysilicon layer having an oxide barrier layer formed on it. The upper electrode may be a TiN layer or a polysilicon layer. An exemplary shallow trench isolation structure includes the SixNy/Ta2O5/SixNy structure as a liner on the sides and bottom of a shallow trench in the surface of a substrate. The shallow trench is filled with an oxide, such as TEOS. A variety of methods may be used for fabricating devices that include the SixNy/Ta2O5/SixNy structure.
    • 绝缘结构包括第一氮化硅层,形成在第一氮化硅(SiNx)层上方的五氧化二钽层和形成在五氧化二钽(Ta2O5)上方的第二氮化硅层。 SiNx覆层在加热期间防止了钽的杂散。 提供高介电常数。 绝缘结构的热稳定性提高。 绝缘结构可以包括在电容器或浅沟槽隔离结构中。 示例性电容器由基板,下电极,三层SixNy / Ta2O5 / SixNy结构和上电极形成。 下电极可以包括在铝层上形成的TiN层,或者形成在多晶硅层上的TiN层,或者在其上形成有氧化物阻挡层的多晶硅层。 上电极可以是TiN层或多晶硅层。 示例性的浅沟槽隔离结构包括作为衬底在衬底表面的浅沟槽的侧面和底部上的SixNy / Ta2O5 / SixNy结构。 浅沟槽中填充有氧化物,如TEOS。 可以使用各种方法来制造包括SixNy / Ta2O5 / SixNy结构的器件。
    • 5. 发明申请
    • MOSFET DEVICE HAVING DUAL INTERLEVEL DIELECTRIC THICKNESS AND METHOD OF MAKING SAME
    • 具有双重交互电导厚度的MOSFET器件及其制造方法
    • US20090267145A1
    • 2009-10-29
    • US12108045
    • 2008-04-23
    • Charles Walter PearceSimon J. MolloyShuming XuXiao Rui Li
    • Charles Walter PearceSimon J. MolloyShuming XuXiao Rui Li
    • H01L29/78H01L21/336
    • H01L29/0847H01L29/402H01L29/66659H01L29/7835
    • A method of forming a metal-oxide-semiconductor (MOS) device includes the following steps: forming a semiconductor layer of a first conductivity type having source and drain regions of a second conductivity type, a channel region and a lightly-doped drain region formed therein; forming a gate over the channel region proximate an upper surface of the semiconductor layer; after the forming steps, depositing a first dielectric layer having a first thickness over an upper surface of the semiconductor layer; etching the first dielectric layer in a region over the lightly-doped drain proximate to the gate to reduce its thickness; conformably depositing a second dielectric layer having a second thickness over the first dielectric layer, including in the etched region, the second thickness being less than the first thickness; and forming a shielding electrode over the second dielectric layer.
    • 形成金属氧化物半导体(MOS)器件的方法包括以下步骤:形成第一导电类型的半导体层,其具有第二导电类型的源极和漏极区域,沟道区域和形成的轻掺杂漏极区域 其中 在靠近半导体层的上表面的沟道区上形成栅极; 在形成步骤之后,在半导体层的上表面上沉积具有第一厚度的第一介电层; 在靠近栅极的轻掺杂漏极上的区域中蚀刻第一介电层以减小其厚度; 在所述第一介电层上沉积具有第二厚度的第二介电层,所述第二介电层包括在所述蚀刻区域中,所述第二厚度小于所述第一厚度; 以及在所述第二电介质层上形成屏蔽电极。
    • 8. 发明授权
    • Dark spin rinse/dry
    • 黑暗旋转冲洗/干燥
    • US06361614B1
    • 2002-03-26
    • US09510015
    • 2000-02-22
    • Bryan Chaeyoo ChungGlenn Alan MarshallCharles Walter PearceKevin Paul Yanders
    • Bryan Chaeyoo ChungGlenn Alan MarshallCharles Walter PearceKevin Paul Yanders
    • C23G102
    • H01L21/67057B08B3/00Y10S134/902
    • A method and apparatus for eliminating the exposure of semiconductor wafers to light during rinsing and drying in wafer cleaning machines having windows is used to reduce scrap and improve the reliability of the integrated circuit devices. An opaque window assembly or a light blocking material is applied to the transparent window to prevent ambient light from entering the processing chamber of the wafer cleaning machine and thereby eliminate light-induced galvanic corrosion produced during rinsing and drying of semiconductor wafers in wafer cleaning machines having windows. This makes the fabrication of advanced integrated circuit devices of increasingly smaller dimensions feasible by eliminating the degradation in reliability caused by light-induced galvanic corrosion produced during cleaning of the semiconductor wafers. The application of a light blocking material to the transparent windows of wafer cleaning machine is cost effective and easily implemented in existing wafer cleaning machines.
    • 用于在具有窗户的晶片清洁机中清洗和干燥期间消除半导体晶片曝光的方法和装置用于减少废料并提高集成电路器件的可靠性。 将不透明窗组件或遮光材料施加到透明窗口以防止环境光进入晶片清洁机的处理室,从而消除在晶片清洗机中的半导体晶片的漂洗和干燥过程中产生的光诱导的电偶腐蚀, 视窗。 这使得通过消除在半导体晶片的清洁期间产生的光诱导的电偶腐蚀导致的可靠性降低,使得尺寸越​​来越小的先进集成电路器件的制造变得可行。 将光阻材料应用于晶圆清洗机的透明窗口是经济有效的并且容易在现有的晶圆清洗机中实现。