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    • 2. 发明申请
    • IMPROVED INTRENCH PROFILE
    • 改进的英语资料
    • WO2013049173A3
    • 2013-06-13
    • PCT/US2012057294
    • 2012-09-26
    • APPLIED MATERIALS INCSAPRE KEDARINGLE NITIN KTANG JING
    • SAPRE KEDARINGLE NITIN KTANG JING
    • H01L21/762H01L21/205H01L21/31
    • H01L21/3065H01L21/3081H01L21/76224
    • A method of etching a recess in a semiconductor substrate is described. The method may include forming a dielectric liner layer in a trench of the substrate where the liner layer has a first density. The method may also include depositing a second dielectric layer at least partially in the trench on the liner layer. The second dielectric layer may initially be flowable following the deposition, and have a second density that is less than the first density of the liner. The method may further include exposing the substrate to a dry etchant, where the etchant removes a portion of the first liner layer and the second dielectric layer to form a recess, where the dry etchant includes a fluorine-containing compound and molecular hydrogen, and where the etch rate ratio for removing the first dielectric liner layer to removing the second dielectric layer is about 1:1.2 to about 1:1.
    • 描述了蚀刻半导体衬底中的凹陷的方法。 该方法可以包括在衬底的具有第一密度的衬底的沟槽中形成电介质衬里层。 该方法还可以包括至少部分地在衬垫层上的沟槽中沉积第二介电层。 第二介电层在沉积之后最初可以是可流动的,并且具有小于衬里的第一密度的第二密度。 该方法可进一步包括将衬底暴露于干蚀刻剂,其中蚀刻剂去除第一衬层和第二介电层的一部分以形成凹槽,其中干蚀刻剂包括含氟化合物和分子氢,并且其中 用于去除第一电介质衬垫层以去除第二电介质层的蚀刻速率比为约1:1.2至约1:1。
    • 6. 发明申请
    • IMPROVING CONFORMALITY OF OXIDE LAYERS ALONG SIDEWALLS OF DEEP VIAS
    • 改善深奥维思德侧壁氧化物层的一致性
    • WO2011112402A2
    • 2011-09-15
    • PCT/US2011026834
    • 2011-03-02
    • APPLIED MATERIALS INCHUA ZHONG QIANGHERNANDEZ MANUEL ALUO LEISAPRE KEDAR
    • HUA ZHONG QIANGHERNANDEZ MANUEL ALUO LEISAPRE KEDAR
    • H01L21/316
    • H01L21/76898
    • A method for improving conformality of oxide layers along sidewalls of vias in semiconductor substrates includes forming a nitride layer over an upper surface of a semiconductor substrate and forming a via extending through the nitride layer and into the semiconductor substrate. The via may have a depth of at least about 50 µm from a top surface of the nitride layer and an opening of less than about 10 µm at the top surface of the nitride layer. The method also includes forming an oxide layer over the nitride layer and along sidewalls and bottom of the via. The oxide layer may be formed using a thermal chemical vapor deposition (CVD) process at a temperature of less than about 450°C, where a thickness of the oxide layer at the bottom of the via is at least about 50% of a thickness of the oxide layer at the top surface of the nitride layer.
    • 一种用于改善沿着半导体衬底中的通孔的侧壁的氧化物层的共形性的方法包括在半导体衬底的上表面上方形成氮化物层并且形成延伸穿过氮化物层并进入半导体衬底的通孔。 通孔可以具有距离氮化物层的顶表面至少约50μm的深度以及在氮化物层的顶表面处小于约10μm的开口。 该方法还包括在氮化物层上并沿着通孔的侧壁和底部形成氧化物层。 可以使用热化学气相沉积(CVD)工艺在低于约450℃的温度下形成氧化物层,其中在通孔底部的氧化物层的厚度为至少约50%的厚度 氧化层位于氮化层的顶部表面。