Dry etching process for compound semiconductors
    1.
    发明授权
    Dry etching process for compound semiconductors 有权
    化学半导体的干蚀刻工艺

    公开(公告)号:US07262137B2

    公开(公告)日:2007-08-28

    申请号:US10782723

    申请日:2004-02-18

    IPC分类号: H01L21/311

    CPC分类号: H01L21/30621

    摘要: Accordingly, this invention relates to an dry etching process for semiconductor wafers. More particularly, the present invention discloses a dry etching process including a halogen etchant (24) and a nitrogen gas (28) that selectively etches a compound semiconductor material (18) faster than the front-side metal layers (16A)(16B). Further, the dry etching process produces a vertical wall profile on compound semiconductor material (18) in both X (38) and Y (40) crystalline directions without undercutting the top of a via-opening.

    摘要翻译: 因此,本发明涉及用于半导体晶片的干蚀刻工艺。 更具体地,本发明公开了一种干蚀刻工艺,其包括选择性地比化学半导体材料(18)比前侧金属层(16A)(16B)蚀刻更多的卤素蚀刻剂(24)和氮气(28) )。 此外,干蚀刻工艺在X(38)和Y(40)结晶方向上在化合物半导体材料(18)上产生垂直壁轮廓,而不会削弱通孔开口的顶部。

    Polymer via etching process
    3.
    发明申请
    Polymer via etching process 审中-公开
    聚合物通过蚀刻工艺

    公开(公告)号:US20050181618A1

    公开(公告)日:2005-08-18

    申请号:US10781353

    申请日:2004-02-17

    摘要: An improved etching process for creating dimensionally accurate sub-micron and micron via-openings is disclosed. Specifically, this invention discloses a via etching process for a polymer layer (24) deposited on a semiconductor substrate (28) comprising the steps of: placing the semiconductor substrate comprising a polymer layer (24) deposited on the semiconductor substrate, a hard-mask (30) deposited on the polymer layer (24) and a photoresist mask (32) deposited on the hard-mask (30). The invention further, discloses performing a hard-mask opening step (34) comprising releasing a first fluoride gas (36) into the chamber. Furthermore, performing a polymer etching step (40) comprising releasing a second fluoride gas (42) into the chamber is disclosed. The invention also includes a hard-mask removal and tapered via step (46) to increase process margin.

    摘要翻译: 公开了用于产生尺寸精确的亚微米和微米通孔的改进的蚀刻工艺。 具体地,本发明公开了一种沉积在半导体衬底(28)上的聚合物层(24)的通孔蚀刻工艺,包括以下步骤:将包含沉积在半导体衬底上的聚合物层(24)的半导体衬底放置在硬掩模 (30),沉积在聚合物层(24)上的光致抗蚀剂掩模(32)和沉积在硬掩模(30)上的光致抗蚀剂掩模。 本发明进一步公开了进行硬掩模打开步骤(34),包括将第一氟化物气体(36)释放到所述室中。 此外,公开了包括将第二氟化物气体(42)释放到室中的聚合物蚀刻步骤(40)。 本发明还包括硬掩模去除和锥形通过步骤(46)以增加工艺余量。

    Dry etching process for compound semiconductors
    4.
    发明申请
    Dry etching process for compound semiconductors 有权
    化学半导体的干蚀刻工艺

    公开(公告)号:US20050181616A1

    公开(公告)日:2005-08-18

    申请号:US10782723

    申请日:2004-02-18

    CPC分类号: H01L21/30621

    摘要: Accordingly, this invention relates to an dry etching process for semiconductor wafers. More particularly, the present invention discloses a dry etching process including a halogen etchant (24) and a nitrogen gas (28) that selectively etches a compound semiconductor material (18) faster than the front-side metal layers (16A)(16B). Further, the dry etching process produces a vertical wall profile on compound semiconductor material (18) in both X (38) and Y (40) crystalline directions without undercutting the top of a via-opening.

    摘要翻译: 因此,本发明涉及用于半导体晶片的干蚀刻工艺。 更具体地,本发明公开了一种干蚀刻工艺,其包括选择性地比化学半导体材料(18)比前侧金属层(16A)(16B)蚀刻更多的卤素蚀刻剂(24)和氮气(28) )。 此外,干蚀刻工艺在X(38)和Y(40)结晶方向上在化合物半导体材料(18)上产生垂直壁轮廓,而不会削弱通孔开口的顶部。