发明授权
- 专利标题: Fabrication of a metalized blind via
- 专利标题(中): 金属化盲孔的制造
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申请号: US10282275申请日: 2002-10-28
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公开(公告)号: US06576549B2公开(公告)日: 2003-06-10
- 发明人: Frank D. Egitto , Elizabeth Foster , Raymond T. Galasco , David E. Houser , Mark L. Janecek , Thomas E. Kindl , Jeffrey A. Knight , Stephen W. MacQuarrie , Voya R. Markovich , Luis J. Matienzo , Amarjit S. Rai , David J. Russell , William T. Wike
- 申请人: Frank D. Egitto , Elizabeth Foster , Raymond T. Galasco , David E. Houser , Mark L. Janecek , Thomas E. Kindl , Jeffrey A. Knight , Stephen W. MacQuarrie , Voya R. Markovich , Luis J. Matienzo , Amarjit S. Rai , David J. Russell , William T. Wike
- 主分类号: H01L2131
- IPC分类号: H01L2131
摘要:
A method and structure for forming a metalized blind via. A dielectric layer is formed on a metallic layer, followed by laser drilling a depression in the dielectric layer such that a carbon film that includes the carbon is formed on a sidewall of the depression. If the laser drilling does not expose the metallic layer, then an anisotropic plasma etching, such as a reactive ion etching (RIE), may be used to clean and expose a surface of the metallic layer. The dielectric layer includes a dielectric material having a carbon based polymeric material, such as a permanent photoresist, a polyimide, and advanced solder mask (ASM). The metallic layer includes a metallic material, such as copper, aluminum, and gold. The carbon film is in conductive contact with the metallic layer, and the carbon film is sufficiently conductive to permit electroplating a continuous layer of metal (e.g., copper) directly on the carbon film without need of an electrolessly plated layer underneath the electroplated layer. The laser drilling is accomplished using a laser radiation having a wavelength between about 180 nanometers and about 600 nanometers. The depression may have any cross-sectional shape and any spatial distribution of depths. As an example, the depression may include a blind via, a rectangular channel, or a combination thereof.
公开/授权文献
- US20030054635A1 Fabrication of a metalized blind via 公开/授权日:2003-03-20
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