发明授权
- 专利标题: Diffusion barrier for thin film hybrid circuits
- 专利标题(中): 薄膜混合电路的扩散势垒
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申请号: US435928申请日: 1989-11-13
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公开(公告)号: US5041191A公开(公告)日: 1991-08-20
- 发明人: James C. Watson
- 申请人: James C. Watson
- 申请人地址: CA El Segundo
- 专利权人: Rockwell International Corporation
- 当前专利权人: Rockwell International Corporation
- 当前专利权人地址: CA El Segundo
- 主分类号: C23F1/38
- IPC分类号: C23F1/38 ; H01C17/28 ; H01L21/70
摘要:
A thin film resistor and method of making employs tungsten or tungsten titanium alloy as an alectrically conductive diffusion barrier between the nickel chromium resistor and the gold conductor. A solution of cupric sulfate, ammonium hydroxide, glycerol and deionized water is used to remove the unwanted diffusion barrier without damaging the thin film resistor materials, thereby preserving precision resistance values.
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