INDUCTOR STRUCTURE

• US 20080191829A1
• Filed: 04/30/2007
• Published: 08/14/2008
• Est. Priority Date: 02/13/2007
• Status: Active Grant

• Current Assignee: VIA Technologies Incorporated (VIA Technologies)
• Original Assignee: VIA Technologies Incorporated (VIA Technologies)
• Inventors: Lee, Sheng-Yuan
• Granted Patent: US 7,642,890 B2
• Time in Patent Office: Days
• US Class Current: 336/170
• CPC Class Codes: H01F 17/0006 Printed inductances printed coils for dynamo-electric machines H02K3/26; printed circuits H05K
• CPC Class Codes: H01F 17/0013 with stacked layers
• CPC Class Codes: H01L 23/5227 Inductive arrangements or effects of, or between, wiring layers other inductive arrangements H01L23/645
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

An inductor structure including a first winding turn and a second winding turn is provided. The first winding turn is disposed above a substrate. The second winding turn is disposed between the first winding turn and the substrate. One end of the second winding turn is grounded, and the other end of the second winding turn and the first winding turn are electrically connected in series. The first winding turn and the second winding turn form a three-dimensional helix structure above the substrate. The width of the second winding turn is greater than that of the first winding turn, and furthermore, the first winding turn is projected onto the second winding turn.

Claims

1. An inductor structure, comprising:

a first winding turn, disposed on a substrate; and

a second winding turn, disposed between the first winding turn and the substrate, one end of the second winding turn is grounded, and the other end of the second winding turn and the first winding turn are electrically connected in series, and the first winding turn and the second winding turn form a three-dimensional helix structure above the substrate, wherein a width of the second winding turn is greater than that of the first winding turn, and the first winding turn is projected on to the second winding turn.

2. The inductor structure according to claim 1, further comprising at least one first gain wire disposed on an inner side of the three-dimensional helix structure, the first gain wire and the second winding turn are electrically connected in parallel and the first gain wire is projected onto the second winding turn.

3. The inductor structure according to claim 2, further comprising at least two vias for coupling two ends of the first gain wire to the second winding turn.

4. The inductor structure according to claim 2, further comprising at least one second gain wire disposed on an outer side of the three-dimensional helix structure, and the second gain wire and the second winding turn are electrically connected in parallel, and the second gain wire is projected on the second winding turn.

5. The inductor structure according to claim 4, further comprising at least two vias for coupling two ends of the second gain wire to the second winding turn.

6. The inductor structure according to claim 1, further comprising at least one gain wire disposed on an outer side of the three-dimensional helix structure, the gain wire and the second winding turn are electrically connected in parallel, and the gain wire is projected onto the second winding turn.

7. The inductor structure according to claim 6, further comprising at least two vias for coupling two ends of the gain wire to the second winding turn.

8. The inductor structure according to claim 1, wherein a material of the first winding turn comprises metal.

9. The inductor structure according to claim 1, wherein a material of the second winding turn comprises metal.

10. The inductor structure according to claim 1, further comprising:

a third winding turn, disposed between the first winding turn and the second winding turn, the third winding turn forms a three-dimensional winding turn structure having at least one turn above the substrate, and the third winding turn is projected onto the second winding turn, the first winding turn and the second winding turn are electrically connected in series through the third winding turn, and the first winding turn, the second winding turn and the third winding turn form a three-dimensional helix structure above the substrate.

11. The inductor structure according to claim 10, wherein a width of the third winding turn is greater than that of the first winding turn, and a width of the second winding turn is greater than that of the third winding turn.

12. The inductor structure according to claim 11, wherein the third winding turn form a three-dimensional winding turn structure with a plurality of turns above the substrate, and a width of each turn of the third winding turn increases toward the substrate, and furthermore, a width of the winding turn of the three-dimensional winding turn structure furthest from the substrate is greater than that of the first winding turn, and the width of the second winding turn is greater than that of the winding turn of the three-dimensional winding turn structure closest to the substrate.

13. The inductor structure according to claim 10, further comprising at least one first gain wire disposed on an inner side of the three-dimensional helix structure, the first gain wire and the second winding turn are electrically connected in parallel, and the first gain wire is projected onto the second winding turn.

14. The inductor structure according to claim 13, further comprising at least two vias for coupling two ends of the first gain wire to the second winding turn.

15. The inductor structure according to claim 13, further comprising at least one second gain wire disposed on an outer side of the three-dimensional helix structure, the second gain wire and the second winding turn are electrically connected in parallel, and the second gain wire is projected onto the second winding turn.

16. The inductor structure according to claim 15, further comprising at least two vias for coupling two ends of the second gain wire to the second winding turn.

17. The inductor structure of claim 10, further comprising at least one gain wire disposed on an outer side of the three-dimensional helix structure, the gain wire and the second winding turn are electrically connected in parallel, and the gain wire is projected onto the second winding turn.

18. The inductor structure according to claim 17, further comprising at least two vias for coupling two ends of the gain wire to the second winding turn.

19. The inductor structure according to claim 10, a material of the first winding turn, the second winding turn and the third winding turn comprises metal.