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TRANSFORMER

  • US 20130135076A1
  • Filed: 11/18/2012
  • Published: 05/30/2013
  • Est. Priority Date: 11/25/2011
  • Status: Abandoned Application
First Claim
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1. A transformer comprising:

  • a first inductor; and

    a second inductor disposed so as to be opposed to the first inductor, the second inductor being rotated around a center axis by 180°

    with respect to the first inductor, whereinthe first inductor comprises;

    a plurality of lines concentrically formed in a first wiring layer, the plurality of lines having an opened ring shape; and

    a first intersection formed in a first area, the first area being one of two areas divided by a line passing through a center axis of the first and second inductors, the first intersection connecting a first line among the plurality of lines of the first inductor with a second line located two lines outside the first line,the first intersection comprises;

    a first connection line formed in a second wiring layer below the first wiring layer; and

    a first interlayer line that connects the first line with the first connection line and connects the second line with the first connection line,in an innermost first intersection, an innermost line and a line immediately outside the innermost line are formed in the first wiring layer in a continuous manner,the second inductor comprises;

    a plurality of lines concentrically formed in a third wiring layer below the second wiring layer, the plurality of lines having an opened ring shape; and

    a second intersection formed in a second area, the second area being another of the two areas divided by the line passing through the center axis of the first and second inductors, the second intersection connecting a third line among the plurality of lines of the second inductor with a fourth line located two lines outside the third line,the second intersection comprises;

    a second connection line formed in a fourth wiring layer between the second wiring layer and the third wiring layer; and

    a second interlayer line that connects the third line with the second connection line and connects the fourth line with the second connection line, andin an innermost second intersection, an innermost line and a line immediately outside the innermost line are formed in the third wiring layer in a continuous manner.

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