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    • 1. 发明授权
    • Method of forming FET silicide gate structures incorporating inner spacers
    • 形成内置衬垫的FET硅化物栅极结构的方法
    • US06974736B2
    • 2005-12-13
    • US10707759
    • 2004-01-09
    • Victor KuAn SteegenHsing-Jen C. WannKeith Kwong Hon Wong
    • Victor KuAn SteegenHsing-Jen C. WannKeith Kwong Hon Wong
    • H01L21/335H01L21/04H01L21/28H01L21/336H01L21/8234H01L21/8238H01L27/092H01L29/423H01L29/49H01L29/78
    • H01L21/28194H01L29/513H01L29/518H01L29/66545H01L29/66553H01L29/6656
    • A method is provided for fabricating a gate structure for a semiconductor device in which the gate structure has an inner spacer. A replacement-gate process is used in which material is removed in a gate region to expose a portion of the substrate; a gate dielectric is formed on the exposed portion of the substrate; and an inner spacer layer is formed overlying the gate dielectric and the dielectric material. A silicon layer is then formed which overlies the inner spacer layer. The structure is then planarized so that portions of the silicon layer and inner spacer layer remain in the gate region. A silicide gate structure is then formed from the silicon; the silicide gate structure is separated from dielectric material surrounding the gate by the inner spacer layer. The semiconductor device may include a first gate region and a second gate region with an interface therebetween, with the inner spacer layer covering the interface. When the device has two gate regions, the process may be used in both gate regions, so as to produce separate silicide structures, with an inner spacer separating the two structures.
    • 提供了一种用于制造半导体器件的栅极结构的方法,其中栅极结构具有内部间隔物。 使用替代栅极工艺,其中在栅极区域中去除材料以暴露基板的一部分; 栅极电介质形成在衬底的暴露部分上; 并且形成覆盖栅极电介质和电介质材料的内部间隔层。 然后形成覆盖在内间隔层上的硅层。 然后将该结构平坦化,使得硅层和内部间隔层的部分保留在栅极区域中。 然后从硅形成硅化物栅极结构; 硅化物栅极结构通过内部间隔层与围绕栅极的介电材料分离。 半导体器件可以包括第一栅极区域和其间具有界面的第二栅极区域,内部间隔层覆盖界面。 当器件具有两个栅极区域时,该工艺可以在两个栅极区域中使用,以便产生分离的硅化物结构,其中分隔两个结构的内部间隔物。
    • 2. 发明授权
    • FET gate structure with metal gate electrode and silicide contact
    • FET栅极结构与金属栅电极和硅化物接触
    • US07056794B2
    • 2006-06-06
    • US10707757
    • 2004-01-09
    • Victor KuAn SteegenHsing-Jen C. Wann
    • Victor KuAn SteegenHsing-Jen C. Wann
    • H01L21/336H01L29/76
    • H01L29/66583H01L21/28079H01L21/28247H01L21/823835H01L29/66545
    • A method is provided for fabricating a single-metal or dual metal replacement gate structure for a semiconductor device; the structure includes a silicide contact to the gate region. A dummy gate structure and sacrificial gate dielectric are removed to expose a portion of the substrate; a gate dielectric is formed thereon. A metal layer is formed overlying the gate dielectric and the dielectric material. This metal layer may conveniently be a blanket metal layer covering a device wafer. A silicon layer is then formed overlying the metal layer; this layer may also be a blanket wafer. A planarization or etchback process is then performed, so that the top surface of the dielectric material is exposed while other portions of the metal layer and the silicon layer remain in the gate region and have surfaces coplanar with the top surface of the dielectric material. A silicide contact is then formed which is in contact with the metal layer in the gate region.
    • 提供一种用于制造用于半导体器件的单金属或双金属替代栅极结构的方法; 该结构包括与栅极区域的硅化物接触。 去除伪栅极结构和牺牲栅极电介质以暴露衬底的一部分; 在其上形成栅极电介质。 形成覆盖栅极电介质和电介质材料的金属层。 该金属层可以方便地覆盖覆盖器件晶片的覆盖金属层。 然后形成覆盖在金属层上的硅层; 该层也可以是覆盖晶片。 然后执行平面化或回蚀工艺,使得介电材料的顶表面被暴露,而金属层和硅层的其它部分保留在栅极区域中并具有与电介质材料的顶表面共面的表面。 然后形成与栅极区域中的金属层接触的硅化物接触。