Inductor structure
AssigneeVIA Technologies, Inc.
InventorSheng-Yuan Lee
Life of this patent
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Abstract
An inductor structure, including a winding turn layer and a shielding layer, is provided. The winding turn layer is disposed above a substrate. The winding turn layer has a plurality of turns, in which one of the turns is grounded. The shielding layer is disposed between the winding turn layer and the substrate at the projection of the grounded turn. At least parts of the winding turn layer except the grounded turn thereof are projected onto the shielding layer. The shielding layer is coupled to the grounded turn in parallel.
Claims20
An inductor structure, comprising:
- a winding turn layer, disposed above a substrate, and having a plurality of turns, wherein one of the turns is grounded;
- and
- a shielding layer, disposed between the winding turn layer and the substrate at the projection of the grounded turn, wherein at least parts of the winding turn layer except the grounded turn thereof are projected onto the shielding layer, and the shielding layer is coupled to the grounded turn in parallel.
An inductor structure, comprising:
- a winding turn layer, disposed above a substrate, formed by serially connecting a plurality of turns, and having a first end and a second end, wherein the first end is grounded;
- a shielding layer, disposed between the winding turn layer and the substrate, and having a third end and a fourth end, wherein at least two turns starting from the first end of the winding turn layer are projected onto the shielding layer;
- and
- a plurality of vias, disposed between the winding turn layer and the shielding layer, so as to at least make the third end and the fourth end of the shielding layer electrically connected to a first turn of the winding turn layer, wherein the first turn is starting from the first end, and the winding turn layer and the shielding layer are electrically coupled in parallel.
A inductor structure, comprising:
- a winding turn layer, disposed above a substrate, comprising:
- a first helical lead, at least comprising a first outer lead and a first inner lead, wherein the first outer lead is serially connected with the first inner lead, and the first inner lead rotates in helical fashion towards a central portion of a helical structure of the first helical lead;
- and
- a second helical lead, corresponding to a symmetrical plane and winding with the first helical lead, and at least comprising a second outer lead and a second inner lead, wherein the second outer lead is serially connected with the second inner lead, the second inner lead rotates in helical fashion towards a central portion of a helical structure of the second helical lead and is connected to the first inner lead, so as to form a symmetrical helical circular structure having a plurality of turns, and an innermost turn of the winding turn layer is virtually grounded;
- and
- a shielding layer, disposed between the winding turn layer and the substrate at the projection of the innermost turn of the winding turn layer, wherein parts of the winding turn layer except the innermost turn thereof are projected onto the shielding layer, and the shielding layer is connected in parallel with the innermost turn of the winding turn layer.
Dependencies are inferred from the claim text.