Multi-step isotropic etch patterning of thick copper layers for forming high aspect-ratio conductors

    公开(公告)号:US12191161B2

    公开(公告)日:2025-01-07

    申请号:US17132282

    申请日:2020-12-23

    Abstract: An integrated circuit device, comprising a substrate comprising a dielectric material and a conductor on or within the dielectric material of the substrate. The conductor comprises a first portion comprising a first sloped sidewall, wherein a first base width of the first portion is greater than a first top width of the first portion. The conductor also comprises a second portion over the first portion, the second portion comprising a second sloped sidewall, wherein a second base width of the upper portion is greater than both a second top width of the second portion and the first top width of the first portion.

    METHOD, DEVICE AND SYSTEM FOR PROVIDING ETCHED METALLIZATION STRUCTURES

    公开(公告)号:US20210289638A1

    公开(公告)日:2021-09-16

    申请号:US17336008

    申请日:2021-06-01

    Abstract: Techniques and mechanisms for providing anisotropic etching of a metallization layer of a substrate. In an embodiment, the metallization layer includes grains of a conductor, wherein a first average grain size and a second average grain size correspond, respectively, to a first sub-layer and a second sub-layer of the metallization layer. The first sub-layer and the second sub-layer each span at least 5% of a thickness of the metallization layer. A difference between the first average grain size and the second average grain size is at least 10% of the first average grain size. In another embodiment, a first condition of metallization processing contributes to grains of the first sub-layer being relatively large, wherein an alternative condition of metallization processing contributes to grains of the second sub-layer being relatively small. A grain size gradient across a thickness of the metallization layer facilitates etching processes being anisotropic.

    Method, device and system for providing etched metallization structures

    公开(公告)号:US11528811B2

    公开(公告)日:2022-12-13

    申请号:US17336008

    申请日:2021-06-01

    Abstract: Techniques and mechanisms for providing anisotropic etching of a metallization layer of a substrate. In an embodiment, the metallization layer includes grains of a conductor, wherein a first average grain size and a second average grain size correspond, respectively, to a first sub-layer and a second sub-layer of the metallization layer. The first sub-layer and the second sub-layer each span at least 5% of a thickness of the metallization layer. A difference between the first average grain size and the second average grain size is at least 10% of the first average grain size. In another embodiment, a first condition of metallization processing contributes to grains of the first sub-layer being relatively large, wherein an alternative condition of metallization processing contributes to grains of the second sub-layer being relatively small. A grain size gradient across a thickness of the metallization layer facilitates etching processes being anisotropic.

    METHOD, DEVICE AND SYSTEM FOR PROVIDING ETCHED METALLIZATION STRUCTURES

    公开(公告)号:US20200236795A1

    公开(公告)日:2020-07-23

    申请号:US16634804

    申请日:2017-09-27

    Abstract: Techniques and mechanisms for providing anisotropic etching of a metallization layer of a substrate. In an embodiment, the metallization layer includes grains of a conductor, wherein a first average grain size and a second average grain size correspond, respectively, to a first sub-layer and a second sub-layer of the metallization layer. The first sub-layer and the second sub-layer each span at least 5% of a thickness of the metallization layer. A difference between the first average grain size and the second average grain size is at least 10% of the first average grain size. In another embodiment, a first condition of metallization processing contributes to grains of the first sub-layer being relatively large, wherein an alternative condition of metallization processing contributes to grains of the second sub-layer being relatively small. A grain size gradient across a thickness of the metallization layer facilitates etching processes being anisotropic.

    MULTI-STEP ISOTROPIC ETCH PATTERNING OF THICK COPPER LAYERS FOR FORMING HIGH ASPECT-RATIO CONDUCTORS

    公开(公告)号:US20220199427A1

    公开(公告)日:2022-06-23

    申请号:US17132282

    申请日:2020-12-23

    Abstract: An integrated circuit device, comprising a substrate comprising a dielectric material and a conductor on or within the dielectric material of the substrate. The conductor comprises a first portion comprising a first sloped sidewall, wherein a first base width of the first portion is greater than a first top width of the first portion. The conductor also comprises a second portion over the first portion, the second portion comprising a second sloped sidewall, wherein a second base width of the upper portion is greater than both a second top width of the second portion and the first top width of the first portion.

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