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    • 53. 发明授权
    • Method for controlling ADI-AEI CD difference ratio of openings having different sizes
    • 用于控制具有不同尺寸的开口的ADI-AEI CD差异比率的方法
    • US08293639B2
    • 2012-10-23
    • US12371809
    • 2009-02-16
    • Feng-Yih ChangPei-Yu ChouJiunn-Hsiung LiaoChih-Wen FengYing-Chih Lin
    • Feng-Yih ChangPei-Yu ChouJiunn-Hsiung LiaoChih-Wen FengYing-Chih Lin
    • H01L21/4763
    • H01L21/76804H01L21/31144H01L21/76895
    • A method for controlling an ADI-AEI CD difference ratio of openings having different sizes is described. The openings are formed through a silicon-containing material layer, an etching resistive layer and a target material layer in turn. Before the opening etching steps, at least one of the opening patterns in the photoresist mask is altered in size through photoresist trimming or deposition of a substantially conformal polymer layer. A first etching step forming thicker polymer on the sidewall of the wider opening pattern is performed to form a patterned Si-containing material layer. A second etching step is performed to remove exposed portions of the etching resistive layer and the target material layer. At least one parameter among the parameters of the photoresist trimming or polymer layer deposition step and the etching parameters of the first etching step is controlled to obtain a predetermined ADI-AEI CD difference ratio.
    • 描述了用于控制具有不同尺寸的开口的ADI-AEI CD差异比率的方法。 开口依次形成为含硅材料层,蚀刻电阻层和靶材料层。 在开口蚀刻步骤之前,光致抗蚀剂掩模中的至少一个开口图案的尺寸通过基本上保形的聚合物层的光致抗蚀剂修饰或沉积而改变。 执行在更宽的开口图案的侧壁上形成较厚聚合物的第一蚀刻步骤以形成图案化的含Si材料层。 执行第二蚀刻步骤以去除蚀刻电阻层和目标材料层的暴露部分。 控制光致抗蚀剂修整或聚合物层沉积步骤的参数中的至少一个参数和第一蚀刻步骤的蚀刻参数以获得预定的ADI-AEI CD差异比。
    • 54. 发明授权
    • Method of forming a contact hole
    • 形成接触孔的方法
    • US08168374B2
    • 2012-05-01
    • US12854913
    • 2010-08-12
    • Pei-Yu ChouJiunn-Hsiung Liao
    • Pei-Yu ChouJiunn-Hsiung Liao
    • G03F7/26
    • H01L21/31144H01L21/0337H01L21/0338
    • A method of forming a contact hole is provided. A pattern is formed in a photo resist layer. The pattern is exchanged into a silicon photo resist layer to form a first opening. Another pattern is formed in another photo resist layer. The pattern is exchanged into a silicon photo resist layer to form a second opening. The pattern having the first, and second openings is exchanged into the interlayer dielectric layer, and etching stop layer to form the contact hole. The present invention has twice exposure processes and twice etching processes to form the contact hole having small distance.
    • 提供一种形成接触孔的方法。 在光致抗蚀剂层中形成图案。 将图案交换成硅光致抗蚀剂层以形成第一开口。 在另一光致抗蚀剂层中形成另一图案。 将图案交换为硅光致抗蚀剂层以形成第二开口。 将具有第一和第二开口的图案交换到层间电介质层和蚀刻停止层以形成接触孔。 本发明具有两次曝光工艺和两次蚀刻工艺以形成具有小距离的接触孔。
    • 59. 发明授权
    • Method of forming at least an opening using a tri-layer structure
    • 使用三层结构形成至少一个开口的方法
    • US07829472B2
    • 2010-11-09
    • US12099788
    • 2008-04-09
    • Wei-Hang HuangKai-Siang NeoPei-Yu ChouJiunn-Hsiung Liao
    • Wei-Hang HuangKai-Siang NeoPei-Yu ChouJiunn-Hsiung Liao
    • H01L21/214
    • H01L21/31138H01L21/3081H01L21/31116
    • A method of forming openings is disclosed. A substrate is first provided, and the tri-layer structure is formed on the substrate. The tri-layer structure includes a bottom photoresist layer, a silicon-containing layer and a top photoresist layer form bottom to top. Subsequently, the top photoresist layer is patterned, and the silicon-containing layer is etched by utilizing the top photoresist layer as an etching mask to partially expose the bottom photoresist layer. Next, the partially exposed bottom photoresist layer is etched through two etching steps in turn by utilizing the patterned silicon-containing layer as an etching mask. The first etching step includes an oxygen gas and at least one non-carbon-containing halogen-containing gas, while the second etching step includes at least one halogen-containing gas. The substrate is thereafter etched by utilizing the patterned bottom photoresist layer as an etching mask to form at least an opening in the substrate.
    • 公开了一种形成开口的方法。 首先提供衬底,并且在衬底上形成三层结构。 三层结构包括底部光致抗蚀剂层,含硅层和从顶部到顶部形成的顶部光致抗蚀剂层。 随后,对顶部光致抗蚀剂层进行图案化,并且通过利用顶部光致抗蚀剂层作为蚀刻掩模来蚀刻含硅层以部分地曝光底部光致抗蚀剂层。 接下来,通过利用图案化的含硅层作为蚀刻掩模,依次通过两个蚀刻步骤蚀刻部分曝光的底部光致抗蚀剂层。 第一蚀刻步骤包括氧气和至少一种含有非含卤素的气体,而第二蚀刻步骤包括至少一种含卤素的气体。 然后通过利用图案化的底部光致抗蚀剂层作为蚀刻掩模来蚀刻衬底,以在衬底中形成至少一个开口。
    • 60. 发明申请
    • METHOD OF FORMING AT LEAST AN OPENING USING A TRI-LAYER STRUCTURE
    • 使用三层结构形成至少打开的方法
    • US20090258499A1
    • 2009-10-15
    • US12099788
    • 2008-04-09
    • Wei-Hang HuangKai-Siang NeoPei-Yu ChouJiunn-Hsiung Liao
    • Wei-Hang HuangKai-Siang NeoPei-Yu ChouJiunn-Hsiung Liao
    • H01L21/311
    • H01L21/31138H01L21/3081H01L21/31116
    • A method of forming openings is disclosed. A substrate is first provided, and the tri-layer structure is formed on the substrate. The tri-layer structure includes a bottom photoresist layer, a silicon-containing layer and a top photoresist layer form bottom to top. Subsequently, the top photoresist layer is patterned, and the silicon-containing layer is etched by utilizing the top photoresist layer as an etching mask to partially expose the bottom photoresist layer. Next, the partially exposed bottom photoresist layer is etched through two etching steps in turn by utilizing the patterned silicon-containing layer as an etching mask. The first etching step includes an oxygen gas and at least one non-carbon-containing halogen-containing gas, while the second etching step includes at least one halogen-containing gas. The substrate is thereafter etched by utilizing the patterned bottom photoresist layer as an etching mask to form at least an opening in the substrate.
    • 公开了一种形成开口的方法。 首先提供衬底,并且在衬底上形成三层结构。 三层结构包括底部光致抗蚀剂层,含硅层和从顶部到顶部形成的顶部光致抗蚀剂层。 随后,对顶部光致抗蚀剂层进行图案化,并且通过利用顶部光致抗蚀剂层作为蚀刻掩模来蚀刻含硅层以部分地曝光底部光致抗蚀剂层。 接下来,通过利用图案化的含硅层作为蚀刻掩模,依次通过两个蚀刻步骤蚀刻部分曝光的底部光致抗蚀剂层。 第一蚀刻步骤包括氧气和至少一种含有非含卤素的气体,而第二蚀刻步骤包括至少一种含卤素的气体。 然后通过利用图案化的底部光致抗蚀剂层作为蚀刻掩模来蚀刻衬底,以在衬底中形成至少一个开口。