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    • 5. 发明授权
    • Method of fabricating planar regions in an integrated circuit
    • 在集成电路中制造平面区域的方法
    • US5742095A
    • 1998-04-21
    • US752749
    • 1996-11-20
    • Frank Randolph BryantRobert Louis Hodges
    • Frank Randolph BryantRobert Louis Hodges
    • H01L21/76H01L21/28H01L21/314H01L21/32H01L21/762H01L21/768H01L23/522H01L29/51H01L29/78H01L23/58
    • H01L21/28176H01L21/28202H01L21/3145H01L21/32H01L21/76216H01L29/513H01L29/518
    • A method is provided for forming a planar surface of a semiconductor integrated circuit, and an integrated circuit formed according to the same. A gate oxide layer is formed over a silicon substrate. A first polysilicon layer is formed over the gate oxide layer and a nitride layer is formed over the first polysilicon layer. The first polysilicon and nitride layers are then patterned and etched to form an opening which exposes a portion of the gate oxide layer. An oxidation step is then performed to form a field oxide region in the opening. The field oxide region is formed to a thickness having an upper surface substantially planar with an upper surface of the first polysilicon layer. The nitride layer is then removed and the gate oxide and first polysilicon layers are patterned and etched to form a gate electrode and an interconnect. A silicide or other conductive layer, such as a second polysilicon layer, may be formed over the remaining first polysilicon regions and a portion of the field oxide layer to connect the gate and interconnect since the upper surface of the first polysilicon layer is substantially planar with the upper surface of the field oxide region and does not cross over the field oxide region.
    • 提供一种用于形成半导体集成电路的平面的方法和根据该集成电路形成的集成电路。 在硅衬底上形成栅氧化层。 在栅极氧化物层上形成第一多晶硅层,在第一多晶硅层上形成氮化物层。 然后对第一多晶硅和氮化物层进行构图和蚀刻,以形成露出栅极氧化物层的一部分的开口。 然后进行氧化步骤以在开口中形成场氧化物区域。 场氧化物区域形成为具有与第一多晶硅层的上表面大致平坦的上表面的厚度。 然后去除氮化物层,并对栅极氧化物和第一多晶硅层进行图案化和蚀刻以形成栅电极和互连。 可以在剩余的第一多晶硅区域和场氧化物层的一部分上形成硅化物或其它导电层,例如第二多晶硅层,以连接栅极和互连,因为第一多晶硅层的上表面基本上是平面的, 场氧化物区域的上表面并且不与场氧化物区域交叉。
    • 9. 发明授权
    • SRAM cell structure with dielectric sidewall spacers and drain and
channel regions defined along sidewall spacers
    • 具有介电侧壁间隔物的SRAM单元结构和沿着侧壁间隔物限定的漏极和沟道区域
    • US6140684A
    • 2000-10-31
    • US881342
    • 1997-06-24
    • Tsiu Chiu ChanFrank Randolph Bryant
    • Tsiu Chiu ChanFrank Randolph Bryant
    • H01L21/8244H01L27/11H01L29/786H01L29/76H01L29/94H01L31/062H01L31/116
    • H01L27/11H01L27/1108Y10S257/903
    • A six transistor static random access memory (SRAM) cell with thin-film pull-up transistors and method of making the same includes providing two bulk silicon pull-down transistors of a first conductivity type, two active gated pull-up thin-film transistors (TFTs) of a second conductivity type, two pass gates, a common word line, and two bit line contacts. The bulk silicon pull-down transistors, two active gated pull-up TFTs, and two pass gates are connected at four shared contacts. In addition, the two bulk silicon pull-down transistors and the two active gated pull-up TFTs are formed with two polysilicon layers, a first of the polysilicon layers (poly1) is salicided and includes poly1 gate electrodes for the two bulk silicon pull-down transistors. A second of the polysilicon layers (poly2) includes desired poly2 stringers disposed along side edges of the poly1 gate electrodes, the desired poly2 stringers forming respective channel regions of the pull-up TFTs.
    • 具有薄膜上拉晶体管的六晶体管静态随机存取存储器(SRAM)单元及其制造方法包括提供两个第一导电类型的体硅下拉晶体管,两个主动门控上拉薄膜晶体管 (TFT),第二导电类型,双通道,公共字线和两个位线触点。 大量硅下拉晶体管,两个有源选通上拉TFT和两个通过门连接在四个共享触点。 此外,两个体硅下拉晶体管和两个主动选通上拉TFT形成有两个多晶硅层,多晶硅层(poly1)中的第一个被浸渍,并且包括用于两个体硅片的多晶硅栅电极, 下降晶体管。 多晶硅层(poly2)中的第二个包括沿着多晶硅栅电极的侧边缘设置的期望的poly2桁条,形成上拉TFT的相应沟道区域的期望的poly2桁条。
    • 10. 发明授权
    • Mosfet isolation structure with planar surface
    • 具有平面表面的Mosfet隔离结构
    • US5874769A
    • 1999-02-23
    • US182809
    • 1994-01-14
    • Tsiu Chiu ChanFrank Randolph Bryant
    • Tsiu Chiu ChanFrank Randolph Bryant
    • H01L21/76H01L21/28H01L21/3105H01L21/32H01L21/762H01L29/423H01L29/49H01L29/78H01L23/58
    • H01L29/4933H01L21/28123H01L21/31055H01L21/32H01L21/76202H01L29/42376H01L2924/0002
    • A method is provided for a planar surface of a semiconductor integrated circuit, and an integrated circuit formed according to the same. A conductive layer is formed over a substrate. A silicon nitride layer is formed over the conductive layer. A photoresist layer is then formed and patterned over the silicon nitride layer. The silicon nitride layer and the conductive layer are etched to form an opening exposing a portion of the substrate. The photoresist layer is then removed. The exposed substrate and a portion of the conductive layer exposed along the sidewalls in the opening are oxidized. An planarizing insulating layer such as spin-on-glass is formed over the silicon nitride layer and in the opening. The insulating layer is etched back to expose the silicon nitride wherein an upper surface of the insulating layer is level with an upper surface of the conductive layer. The silicon nitride layer is then removed. A planar silicide layer is then formed over the conductive layer.
    • 提供了一种用于半导体集成电路的平面的方法和根据该集成电路形成的集成电路。 在衬底上形成导电层。 在导电层上形成氮化硅层。 然后在氮化硅层上形成并图案化光致抗蚀剂层。 蚀刻氮化硅层和导电层以形成露出衬底的一部分的开口。 然后除去光致抗蚀剂层。 暴露的基板和沿开口侧壁暴露的导电层的一部分被氧化。 在氮化硅层和开口中形成平面化绝缘层,例如旋涂玻璃。 将绝缘层回蚀刻以露出氮化硅,其中绝缘层的上表面与导电层的上表面平齐。 然后去除氮化硅层。 然后在导电层上形成平面硅化物层。