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    • 93. 发明授权
    • Method of increasing the etch selectivity of a contact sidewall to a preclean etchant
    • 将接触侧壁的蚀刻选择性增加到预清洗蚀刻剂的方法
    • US06677247B2
    • 2004-01-13
    • US10041550
    • 2002-01-07
    • Zheng YuanSteve GhanayemRandhir P. S. Thakur
    • Zheng YuanSteve GhanayemRandhir P. S. Thakur
    • H01L2100
    • H01L21/76814C03C15/00H01L21/02043H01L21/02046H01L21/02063H01L21/31116H01L21/76826H01L21/76831
    • A method of forming a contact in an integrated circuit between a first metalization layer and a silicon substrate. In one embodiment the method comprises forming a premetal dielectric layer over the silicon substrate, etching a contact hole through the premetal dielectric layer and then forming a thin silicon nitride layer on an outer surface of the contact hole. The silicon nitride layer reduces overetching that may otherwise occur when oxidation build-up is removed from the silicon interface within the contact hole by a preclean process. After the preclean process, the contact hole is then filled with one or more conductive materials. In various embodiments the silicon nitride layer is formed by exposing the contact hole to a nitrogen plasma, depositing the layer by a chemical vapor deposition process and depositing the layer by an atomic layer deposition process. In other embodiments, the method is applicable to the formation of vias through intermetal dielectric layers.
    • 一种在第一金属化层和硅衬底之间的集成电路中形成接触的方法。 在一个实施例中,该方法包括在硅衬底上形成前金属介电层,蚀刻通过前金属介电层的接触孔,然后在接触孔的外表面上形成薄的氮化硅层。 氮化硅层减少过蚀刻,否则当通过预清洗工艺从接触孔中的硅界面除去氧化积聚时,可能会发生过蚀刻。 在预清洗工艺之后,接触孔然后用一种或多种导电材料填充。 在各种实施例中,通过将接触孔暴露于氮等离子体,通过化学气相沉积工艺沉积该层并通过原子层沉积工艺沉积该层来形成氮化硅层。 在其它实施例中,该方法适用于通过金属间电介质层形成通孔。
    • 98. 发明授权
    • Substrate processing method and substrate processing apparatus
    • 基板处理方法和基板处理装置
    • US06620251B2
    • 2003-09-16
    • US09799562
    • 2001-03-07
    • Junichi Kitano
    • Junichi Kitano
    • C23C1412
    • H01L21/02046B08B7/0057G03F7/085G03F7/16H01L21/67028Y10S134/902
    • A closed container composed of a lid body and a lower container are provided in a cover body, and a supply pipe for nitrogen gas is connected to the cover body. A light source unit including UV lamps in the lid body is provided to face a mounting table in the closed container, and a gas supply path for HMDS gas is provided on the outer side from the light source unit. The inside of the cover body is first brought to a nitrogen atmosphere, a wafer is irradiated with ultraviolet rays with the lid body of the closed container opened to perform cleaning. Subsequently, the lid body is closed and the HMDS gas is introduced into the closed container to perform hydrophobic processing for the wafer. This removes deposits such as organic substances adhering to the wafer W through the irradiation with the ultraviolet rays, thereby improving coating properties of a resist solution.
    • 由盖体和下容器构成的密闭容器设置在盖体内,氮气供给管与盖体连接。 在盖体内设置包括紫外灯的光源单元,以与封闭容器内的安装台相对,并且在从光源单元的外侧设置用于HMDS气体的气体供给路径。 首先将盖体的内部带入氮气氛,在密封容器的盖体开放的状态下用紫外线照射晶片进行清洗。 随后,关闭盖体,并将HMDS气体引入密封容器中以对晶片进行疏水处理。 通过紫外线的照射来除去附着在晶片W上的有机物质等沉积物,提高抗蚀剂溶液的涂布性。
    • 100. 发明授权
    • Removal of post etch residuals on wafer surface
    • 去除晶片表面上的后蚀刻残留物
    • US06566269B1
    • 2003-05-20
    • US09616845
    • 2000-07-14
    • Peter J. BilesMario V. PitaSylvia M. LuqueLauri M. NelsonRobert H. Mills
    • Peter J. BilesMario V. PitaSylvia M. LuqueLauri M. NelsonRobert H. Mills
    • H01L21302
    • H01L21/31116H01L21/02046H01L21/31122
    • The present invention provides a method of plasma chamber etching of a semiconductor structure having a base layer, an etch stop layer, a dielectric material layer and a patterned photoresist layer. Among other things, the method may include etching selected portions of the dielectric material layer through the photoresist layer using a plasma etchant containing at least one of fluorine and sulfur in a compound such that portions of the photoresist layer may be contaminated with ions of the at least one of the fluorine and sulfur. The method may further include the steps of exhausting the etchant from the plasma chamber, introducing an oxygen containing gas into the plasma chamber, energizing the plasma reactor to create at least oxygen ions for bombarding the photoresist surface to remove at least a portion of the photoresist containing a majority of the contaminating one of the fluorine and sulfur ions whereby the fluorine and sulfur ions combine with other ions in the oxygen containing gas during at least exhaustion of the gas from the chamber, and removing the semiconductor structure containing a remaining portion of the photoresist from the plasma chamber.
    • 本发明提供了一种具有基底层,蚀刻停止层,介电材料层和图案化光致抗蚀剂层的半导体结构的等离子体室蚀刻的方法。 除其他之外,该方法可以包括通过使用在化合物中含有氟和硫中的至少一种的等离子体蚀刻剂通过光致抗蚀剂层蚀刻电介质材料层的选定部分,使得光致抗蚀剂层的一部分可能被在 至少一个氟和硫。 该方法可以进一步包括以下步骤:从等离子体室排出蚀刻剂,将含氧气体引入等离子体室中,激励等离子体反应器至少产生氧离子以轰击光致抗蚀剂表面以去除至少一部分光致抗蚀剂 含有大部分污染的氟和硫离子,由此氟和硫离子在至少从室中排出的气体中与含氧气体中的其它离子结合,并且除去包含剩余部分的半导体结构 来自等离子体室的光致抗蚀剂。