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    • 1. 发明授权
    • Method of forming borderless contact
    • 形成无边界接触的方法
    • US06316311B1
    • 2001-11-13
    • US09203036
    • 1998-12-01
    • Tung-Po ChenTong-Yu ChenKeh-Ching HuangJacob Chen
    • Tung-Po ChenTong-Yu ChenKeh-Ching HuangJacob Chen
    • H01L218242
    • H01L21/76897H01L27/10873H01L27/10894
    • A method of forming borderless contacts is provided. A substrate is provided. The substrate has at least a logic region and a memory region. A MOS transistor and a STI structure are formed on the logic region. The MOS transistor comprises a gate, a source/drain region and a cap insulating layer on the gate. An etching stop layer is formed on the substrate to cover the MSO transistor and the STI structure. A dielectric layer is formed in the etching stop layer. The dielectric layer, the etching stop layer and the cap insulating layer are partially removed to form a first opening according to the pattern of a first mask layer. The first opening exposes the gate. According to the pattern of a second mask layer, the dielectric layer and the etching stop layer are partially removed to form openings, which expose the source/drain region, in the dielectric layer.
    • 提供了形成无边界接触的方法。 提供基板。 衬底至少具有逻辑区域和存储区域。 在逻辑区域上形成MOS晶体管和STI结构。 MOS晶体管包括栅极,源极/漏极区域和栅极上的帽绝缘层。 在衬底上形成蚀刻停止层以覆盖MSO晶体管和STI结构。 在蚀刻停止层中形成介电层。 根据第一掩模层的图案,介电层,蚀刻停止层和盖绝缘层被部分去除以形成第一开口。 第一个开放暴露了大门。 根据第二掩模层的图案,电介质层和蚀刻停止层被部分地去除以形成在电介质层中暴露源/漏区的开口。
    • 2. 发明授权
    • Method for forming a contact opening with multilevel etching
    • 用多层蚀刻形成接触孔的方法
    • US6010968A
    • 2000-01-04
    • US220541
    • 1998-12-24
    • Chan-Lon YangTong-Yu ChenKeh-Ching Huang
    • Chan-Lon YangTong-Yu ChenKeh-Ching Huang
    • H01L21/311H01L21/00
    • H01L21/31116
    • A multilevel contact etching method to form a contact opening is provided. The method contains using an inductively coupled plasma (ICP) etcher to produce a high plasma density condition. The plasma gas etchant is composed of C.sub.4 F.sub.8 /CH.sub.2 F.sub.2 /CO/Ar with a ratio of 3:4:12:80 so that silicon nitride can be selectively etched while the silicon and silicide are not etched. Each content ratio of the plasma gas etchant allows a variance of about 20%. Wall temperature of the ICP etcher is about 100.degree. C.-300.degree. C. A cooling system for a wafer pad is about -20.degree. C.-20.degree. C. Chamber pressure is about 5-100 mtorr. Bias power on the wafer pad is about 1000 W-3000 W. Source power of an inductance coil is about 500 W-3000 W.
    • 提供了形成接触开口的多层接触蚀刻方法。 该方法包括使用电感耦合等离子体(ICP)蚀刻器来产生高等离子体密度条件。 等离子体气体蚀刻剂由比例为3:4:12:80的C4F8 / CH2F2 / CO / Ar组成,以便在不蚀刻硅和硅化物的情况下,可以选择性地蚀刻氮化硅。 等离子体气体蚀刻剂的每个含量比允许约20%的变化。 ICP蚀刻器的壁温为约100℃-300℃。晶片垫的冷却系统为约-20℃-20℃。室压力为约5-100mtorr。 晶片垫上的偏置功率约为1000W-3000W。电感线圈的功率为约500W-3000W。
    • 4. 发明授权
    • Method for forming a high aspect ratio borderless contact hole
    • 用于形成高纵横比无边界接触孔的方法
    • US06184147B2
    • 2001-02-06
    • US09263421
    • 1999-03-05
    • Chan-Lon YangTong-Yu ChenKeh-Ching Huang
    • Chan-Lon YangTong-Yu ChenKeh-Ching Huang
    • H01L21302
    • H01L21/76897H01J37/32082H01J2237/3347H01L21/31116H01L21/31144H01L21/76802
    • A method for forming a high aspect ration (HAR>4:1) borderless contact hole is described. The method forms a contact/via hole in the silicon oxide layer by performing an etching process with an etchant, C4F8/C2F6,/Ar/CO or C4F8/Ar/CO, on an etcher. The etcher includes a ring, a roof, a chiller and a chamber. The etchant used in the etching process is controlled under conditions including a C4F8 flow of about 10 to 20 sccm, a CO flow of about 1 to 100 sccm, and an Ar flow of about 100 to 500 sccm. The flow of C2F6 is about 0.5 to 1.5 times that of C4F8. The conditions of the etcher include a roof temperature of about 150 to 300° C., a chiller temperature of about −20 to 20° C., a wall temperature of about 150 to 400° C., a ring temperature of about 150 to 400° C., and a pressure within the chamber of about 4 to 50 mtorr. By controlling the chamber pressure and the deposition rate of the polymer molecules, a properly profiled contact hole is obtained.
    • 描述了形成高纵横比(HAR> 4:1)无边界接触孔的方法。 该方法通过在蚀刻剂上用蚀刻剂C 4 F 8 / C 2 F 6,/ Ar / CO或C 4 F 8 / Ar / CO执行蚀刻处理来形成氧化硅层中的接触/通孔。 蚀刻器包括环,屋顶,冷却器和室。 在蚀刻工艺中使用的蚀刻剂在约10至20sccm的C 4 F 8流量,约1至100sccm的CO流量和约100至500sccm的Ar流量的条件下进行控制。 C2F6的流量约为C4F8的0.5〜1.5倍。 蚀刻器的条件包括约150至300℃的屋顶温度,约-20至20℃的冷却器温度,约150至400℃的壁温度,约150至400℃的环境温度 400℃,室内的压力为约4至50毫托。 通过控制室压力和聚合物分子的沉积速率,获得适当的异型接触孔。
    • 6. 发明授权
    • Method of defining polysilicon patterns
    • 定义多晶硅图案的方法
    • US07319074B2
    • 2008-01-15
    • US11160178
    • 2005-06-13
    • Pei-Yu ChouTong-Yu Chen
    • Pei-Yu ChouTong-Yu Chen
    • H01L21/302
    • H01L21/32139H01L21/31138H01L21/32137
    • The present invention provides a method of defining polysilicon patterns. The method forms a polysilicon layer on a substrate, and a patterned mask on the polysilicon layer. Then, a first etching process is performed to remove a portion of the polysilicon layer not covered by the mask, thus forming a plurality of cavities in the polysilicon layer. A strip process is performed to strip the mask utilizing gases excluding O2. Finally, a second etching process is performed to remove a portion of the polysilicon layer, thus extending the plurality of cavities down to a surface of the substrate.
    • 本发明提供了一种限定多晶硅图案的方法。 该方法在衬底上形成多晶硅层,并在多晶硅层上形成图案化掩模。 然后,进行第一蚀刻处理以去除未被掩模覆盖的多晶硅层的一部分,从而在多晶硅层中形成多个空腔。 执行条带处理以利用除O 2以外的气体剥离掩模。 最后,执行第二蚀刻工艺以去除多晶硅层的一部分,从而将多个空腔向下延伸到衬底的表面。
    • 8. 发明授权
    • Method of removing photoresist and reducing native oxide in dual damascene copper process
    • 在双镶嵌铜工艺中去除光致抗蚀剂和还原天然氧化物的方法
    • US06352938B2
    • 2002-03-05
    • US09457561
    • 1999-12-09
    • Tong-Yu ChenHsi-Ta ChuangChan-Lon Yang
    • Tong-Yu ChenHsi-Ta ChuangChan-Lon Yang
    • H01L21302
    • H01L21/76814H01L21/02063H01L21/31138H01L21/76838H01L21/76843H01L21/76865H01L21/76873H01L21/76879
    • A method of manufacturing metallic interconnects. A substrate has a copper line formed therein. An inter-metal dielectric layer is formed over the substrate and the copper line. A patterned photoresist layer is formed over the inter-metal dielectric layer. The inter-metal dielectric layer is etched to form a trench and a contact opening that exposes a portion of the copper line, wherein the contact opening is under the trench. At a low temperature and using a plasma derived from a gaseous mixture N2H2 (H2:4%)/O2, the photoresist layer is removed. Any copper oxide layer formed on the copper line in the process of removing photoresist material is reduced back to copper using gaseous N2H2 (H2:4%). A barrier layer conformal to the trench and the contact opening profile is formed. Copper is deposited to form a conformal first copper layer over the trench and the contact opening. Using the first copper layer as a seeding layer, a copper or a copperless electroplating is carried out so that a second copper layer is grown anisotropically over the first copper layer.
    • 一种制造金属互连的方法。 基板上形成有铜线。 在衬底和铜线之上形成金属间介电层。 在金属间介电层上形成图案化的光致抗蚀剂层。 蚀刻金属间电介质层以形成暴露铜线的一部分的沟槽和接触开口,其中接触开口在沟槽下方。 在低温下并使用来自气态混合物N 2 H 2(H 2:4%)/ O 2)的等离子体,除去光致抗蚀剂层。 在除去光致抗蚀剂材料的工艺中在铜线上形成的任何铜氧化物层都使用气态N 2 H 2(H 2:4%)还原成铜。 形成与沟槽一致的阻挡层和形成接触开口轮廓。 沉积铜以在沟槽和接触开口上形成共形的第一铜层。 使用第一铜层作为接种层,进行铜或无铜电镀,使得第二铜层在第一铜层上各向异性地生长。