发明申请
- 专利标题: STRUCTURE AND METHOD FOR PROVIDING PRECISION PASSIVE ELEMENTS
- 专利标题(中): 提供精密无源元件的结构和方法
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申请号: US10709109申请日: 2004-04-14
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公开(公告)号: US20050233478A1公开(公告)日: 2005-10-20
- 发明人: Douglas Coolbaugh , Hayden Cranford , Terence Hook , Anthony Stamper
- 申请人: Douglas Coolbaugh , Hayden Cranford , Terence Hook , Anthony Stamper
- 申请人地址: US NY Armonk 10504
- 专利权人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人地址: US NY Armonk 10504
- 主分类号: H01L21/00
- IPC分类号: H01L21/00 ; H01L23/525 ; H01L27/08 ; H01P3/08
摘要:
A circuit having a precision passive circuit element, such as a resistor or a capacitor, with a target value of an electrical parameter is fabricated on a substrate with a plurality of independent parallel-connected passive circuit elements. The plurality of passive circuit elements are designed to have a plurality of values of the electrical parameter which are spaced or offset at or around the target value of the electrical parameter, such as three circuit elements with one having a value at the target value, one having a value above the target value, and one having a value below the target value. Each passive circuit element also has a fuse in series therewith. A reference calibration structure is also fabricated, which can be a passive circuit element having the target value of the electrical parameter, in a reference area of the substrate under the same conditions and at the same time as fabrication of the plurality of passive circuit elements. The actual component value of the reference calibration structure is then measured, and based upon the measurement a single precision passive element of the plurality of parallel passive circuit elements is selected by blowing the fuses of, and thus deselecting, the other independent parallel connected passive circuit elements.
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