Thin film coil and electronic device having the same

Patent metadata

Field	Value
Publication number	US-2016013665-A1
Application number	US-201514859885-A
Country	US
Kind code	A1
Filing date	Sep 21, 2015
Priority date	Mar 29, 2012
Publication date	Jan 14, 2016
Grant date	—

Abstract

There are provided a thin film coil and an electronic device having the same, the thin film coil including a substrate; and a coil pattern including a first coil strand and a second coil strand formed on both surfaces of the substrate, respectively, wherein the first coil strand formed on one surface of the substrate includes at least one gyration path that passes through the other surface of the substrate and gyrates.

First claim

What is claimed is:

1 . An antenna coil comprising:
a planar coil comprising a first conductor portion extending in spiral manner from an outside of the coil to an inside thereof; a lead-out conductor portion disposed substantially coplanar with the planar coil conductor and extending radially from the inside of the planar coil to an outside, the planar coil comprising a plurality of radially aligned gyrations disposed around the lead-out conductor.

2 . The antenna coil as recited in claim 1 , wherein the planar coil is disposed on a first surface of a substrate.

3 . The antenna coil as recited in claim 2 , wherein each of the plurality of radially aligned gyrations comprise at least one via passing through the first surface of the substrate.

4 . The antenna coil as recited in claim 3 , wherein the plurality of radially aligned gyrations pass through the first surface of the substrate, traverse below the lead-out conductor, and reemerge through the first surface of the substrate to rejoin the first conductor portion.

5 . The antenna coil as recited in claim 4 , wherein the planar coil further comprises a second conductor portion extending in spiral manner on a second surface of the substrate.

6 . The antenna coil as recited in claim 5 , wherein the second conductor portion is disposed in parallel relation symmetric to the first conductor portion.

7 . The antenna coil as recited in claim 6 , wherein the gyrations couple the first conductor portion of the planar coil with the second conductor portion at a shared conductor portion on the second surface of the substrate.

8 . The antenna coil as recited in claim 1 , wherein the substrate comprises a thin film printed circuit board (PCB).

9 . The antenna coil as recited in claim 5 , further comprising a first and second terminal portion disposed substantially co-planar to the first conductor portion along a lateral edge of thereof.

10 . The antenna coil as recited in claim 9 , wherein the first and second terminal portions are respectively coupled to the first conductor portion and the lead-out conductor portion.

11 . The antenna coil as recited in claim 10 , wherein the first and second terminal portions are disposed on the first surface of the substrate, and a third terminal portion is disposed on the second surface of the substrate, the first and third terminal portions being electrically coupled to dispose the first and second conductor portions in parallel relation.

12 . The antenna coil as recited in claim 11 , wherein the first and second conductor portions comprise a plurality of parallel conductor strands configured according to an operational frequency of the wireless power transmission antenna.

13 . The antenna coil as recited in claim 5 , wherein the second conductor portion couples on a terminal end thereof through the substrate to the lead-out conductor portion.

14 . The antenna coil as recited in claim 5 , further comprising a magnetic member disposed on a surface of the substrate.

15 . The antenna coil as recited in claim 14 , further comprising a non-magnetic conductor member disposed above the magnetic member.

16 . The antenna coil as recited in claim 5 , further comprising a protective film disposed below the second surface of the substrate.

17 . A portable terminal device comprising the antenna coil as recited in claim 5 coupled to an inner surface of a case therefor.

18 . The antenna coil as recited in claim 1 , wherein the antenna coil is configured for wireless power transmission or reception.

19 . An antenna coil comprising:
a dielectric thin-film substrate; and, a dual-coil conductor pattern comprising first and second substantially symmetric planar coils defined on opposing first and second surfaces of the substrate respectively in aligned manner, the first and second coils being interconnected at intermediate portions thereof to share at least a conductive trace portion therebetween.

20 . An antenna coil comprising:
a substrate defining opposing first and second surfaces; and, a dual-coil pattern comprising:
a first coil defined on the first surface of the substrate; and,
a second coil defined on the second surface of the substrate, the second coil comprising a plurality of detour paths defined at portions of the second coil, the plurality of detour paths traversing through the substrate from the second surface to the first surface to couple with the first coil.

Assignees

• Samsung Electro Mech

Inventors

• Lim Dae Ki
• Kim Tae Sung
• Nam Hyeon Gil
• An Chan Gwang
• Lee Hyun Seok
• Chang Ki Won
• Han Chang Mok
• Bae Sang Woo
• Cho Sung Eun
• Sung Jae Suk

Classifications

• H01F2017/0086

  on semiconductor substrate · CPC title

• H01F38/14

  Inductive couplings {(for wireless supply or distribution of electric power using inductive coupling H02J50/10)} · CPC title

• H01F2017/004

  with the coil helically wound around an axis without a core · CPC title

• H01F5/00

  Coils (superconducting coils H01F6/06; fixed inductances of the signal type H01F17/00) · CPC title

• H01F2017/0073

  with a special conductive pattern, e.g. flat spiral · CPC title