Thin resist with transition metal hard mask for via etch application
    51.
    发明授权
    Thin resist with transition metal hard mask for via etch application 有权
    具有过渡金属硬掩模的薄抗蚀剂,用于通孔蚀刻应用

    公开(公告)号:US06440640B1

    公开(公告)日:2002-08-27

    申请号:US09703092

    申请日:2000-10-31

    IPC分类号: G03C500

    摘要: A method of forming a via structure is provided. In the method, a dielectric layer is formed on an anti-reflective coating (ARC) layer covering a first metal layer; and a transition metal layer is formed on the dielectric layer. An ultra-thin photoresist layer is formed on the transition metal layer, and the ultra-thin photoresist layer is patterned with short wavelength radiation to define a pattern for a via. The patterned ultra-thin photoresist layer is used as a mask during a first etch step to transfer the via pattern to the transition metal layer. The first etch step includes an etch chemistry that is selective to the transition metal layer over the ultra-thin photoresist layer and the dielectric layer. The transition metal layer is employed as a hard mask during a second etch step to form a contact hole corresponding to the via pattern by etching portions of the dielectric layer.

    摘要翻译: 提供一种形成通孔结构的方法。 在该方法中,在覆盖第一金属层的抗反射涂层(ARC)层上形成电介质层; 并且在介电层上形成过渡金属层。 在过渡金属层上形成超薄光致抗蚀剂层,并用短波长辐射对超薄光致抗蚀剂层进行构图,以形成通孔图案。 在第一蚀刻步骤期间,将图案化超薄光致抗蚀剂层用作掩模,以将通孔图案转印到过渡金属层。 第一蚀刻步骤包括对超薄光致抗蚀剂层和电介质层上的过渡金属层有选择性的蚀刻化学品。 在第二蚀刻步骤期间,过渡金属层用作硬掩模,以通过蚀刻介电层的部分形成与通孔图案相对应的接触孔。

    Ultra-thin resist and barrier metal/oxide hard mask for metal etch
    52.
    发明授权
    Ultra-thin resist and barrier metal/oxide hard mask for metal etch 有权
    用于金属蚀刻的超薄抗蚀剂和阻挡金属/氧化物硬掩模

    公开(公告)号:US06200907B1

    公开(公告)日:2001-03-13

    申请号:US09204216

    申请日:1998-12-02

    IPC分类号: H01L21302

    摘要: In one embodiment, the present invention relates to a method of forming a metal line, involving the steps of providing a semiconductor substrate comprising a metal layer, an oxide layer over the metal layer, and a barrier metal layer over the oxide layer; depositing an ultra-thin photoresist over the barrier metal layer, the ultra-thin photoresist having a thickness less than about 2,000 Å; irradiating the ultra-thin photoresist with electromagnetic radiation having a wavelength of about 250 nm or less; developing the ultra-thin photoresist exposing a portion of the barrier metal layer; etching the exposed portion of the barrier metal layer exposing a portion of the oxide layer; etching the exposed portion of the oxide layer exposing a portion of the metal layer; and etching the exposed portion of the metal layer thereby forming the metal line.

    摘要翻译: 在一个实施例中,本发明涉及一种形成金属线的方法,包括以下步骤:提供包括金属层的半导体衬底,金属层上的氧化物层和氧化物层上的阻挡金属层; 在阻挡金属层上沉积超薄光致抗蚀剂,超薄光致抗蚀剂具有小于约的厚度; 用波长约250nm或更小的电磁辐射照射超薄光致抗蚀剂; 显影暴露一部分阻挡金属层的超薄光刻胶; 蚀刻暴露部分氧化物层的阻挡金属层的暴露部分; 蚀刻暴露出金属层的一部分的氧化物层的暴露部分; 并且蚀刻金属层的暴露部分从而形成金属线。

    Method using a thin resist mask for dual damascene stop layer etch
    53.
    发明授权
    Method using a thin resist mask for dual damascene stop layer etch 有权
    使用薄抗蚀剂掩模的双镶嵌停止层蚀刻方法

    公开(公告)号:US06184128B2

    公开(公告)日:2001-02-06

    申请号:US09497222

    申请日:2000-01-31

    IPC分类号: H01L214763

    CPC分类号: H01L21/7681 H01L21/31144

    摘要: In one embodiment, the present invention relates to a dual damascene method involving the steps of providing a substrate having a first low k material layer; forming a first hard mask layer over the first low k material layer; patterning a first opening having a first width in the first hard mask layer using a first photoresist thereby exposing a portion of the first low k material layer; removing the first photoresist; depositing a second low k material layer over the patterned first hard mask layer and the exposed portion of the first low k material layer; forming a second hard mask layer over the second low k material layer; patterning a second opening having a width larger than the first width in the second hard mask layer using a second photoresist thereby exposing a portion of the second low k material layer; anisotropically etching the exposed portions of the first and second low k material layers; and removing the second photoresist, wherein and at least one of the first photoresist and the second photoresist have a thickness of about 1,500 Å or less.

    摘要翻译: 在一个实施例中,本发明涉及一种双镶嵌方法,包括以下步骤:提供具有第一低k材料层的基底; 在所述第一低k材料层上形成第一硬掩模层; 使用第一光致抗蚀剂构图在第一硬掩模层中具有第一宽度的第一开口,从而暴露第一低k材料层的一部分; 去除第一光致抗蚀剂; 在图案化的第一硬掩模层和第一低k材料层的暴露部分上沉积第二低k材料层; 在所述第二低k材料层上形成第二硬掩模层; 使用第二光致抗蚀剂构图在第二硬掩模层中形成具有大于第一宽度的宽度的第二开口,从而暴露第二低k材料层的一部分; 各向异性地蚀刻第一和第二低k材料层的暴露部分; 并且去除所述第二光致抗蚀剂,其中所述第一光致抗蚀剂和所述第二光致抗蚀剂中的至少一个具有大约等于或小于1500埃的厚度。

    System for controlling reflection reticle temperature in microlithography
    54.
    发明授权
    System for controlling reflection reticle temperature in microlithography 有权
    微光刻反射标线温度系统

    公开(公告)号:US6098408A

    公开(公告)日:2000-08-08

    申请号:US189228

    申请日:1998-11-11

    IPC分类号: F25B21/02 G03F7/20 G05D23/19

    摘要: A system for regulating reticle temperature is provided. The system includes a reticle for use in a lithographic process and a chuck assembly for supporting the reticle. The chuck assembly includes: a backplate having front and back surfaces, the front surface engaging with a backside of the reticle; and a thermoelectric cooling system operatively coupled to the backplate for regulating temperature of at least a portion of the reticle via heat conduction through the backplate. The chuck assembly also includes a temperature sensing system coupled to the backplate for sensing temperature of at least a portion of the reticle via heat conduction through the backplate; and a heat sink operatively coupled to the thermoelectric cooling system. A voltage driver operatively is coupled to the thermoelectric cooling system, the voltage driver provides a bias voltage to drive the thermoelectric cooling system. A processor is operatively coupled to the voltage driver, the processor employing the voltage driver in controlling the thermoelectric cooling system.

    摘要翻译: 提供了一种用于调节掩模版温度的系统。 该系统包括用于光刻工艺的掩模版和用于支撑掩模版的卡盘组件。 卡盘组件包括:背板,其具有前表面和后表面,前表面与掩模版的背面接合; 以及可操作地耦合到所述背板的热电冷却系统,用于通过所述背板的热传导来调节所述掩模版的至少一部分的温度。 卡盘组件还包括耦合到背板的温度感测系统,用于通过背板的热传导来感测至少一部分光罩的温度; 以及可操作地耦合到热电冷却系统的散热器。 电压驱动器可操作地耦合到热电冷却系统,电压驱动器提供偏置电压来驱动热电冷却系统。 处理器可操作地耦合到电压驱动器,处理器采用电压驱动器来控制热电冷却系统。