US 12,328,011 B2
Coil component and wireless power transmission device having the same
Takuya Yoshida, Tokyo (JP); Noritaka Chiyo, Tokyo (JP); Michihisa Tokui, Tokyo (JP); Kentaro Kamiyama, Tokyo (JP); and Daiki Yamane, Tokyo (JP)
Assigned to TDK Corporation, Tokyo (JP)
Filed by TDK Corporation, Tokyo (JP)
Filed on Feb. 6, 2023, as Appl. No. 18/164,723.
Claims priority of application No. 2022-016845 (JP), filed on Feb. 7, 2022.
Prior Publication US 2023/0253830 A1, Aug. 10, 2023
Int. Cl. H01F 27/28 (2006.01); H01F 17/00 (2006.01); H01F 27/00 (2006.01); H02J 50/12 (2016.01)
CPC H02J 50/12 (2016.02) [H01F 17/0006 (2013.01); H01F 27/006 (2013.01); H01F 27/2871 (2013.01); H01F 2017/0073 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A coil component comprising:
a substrate; and
a planar spiral coil pattern provided on a surface of the substrate,
wherein the coil pattern has a circularity higher in its inner shape than in its outer shape,
wherein the outer shape of the coil pattern has first and second sections extending in a first direction, a third section extending in a second direction perpendicular to the first direction, a fourth section positioned between the first and second sections and extending obliquely with respect to the first direction, and a fifth section positioned between the second and third sections and curved such that the extending direction thereof changes from the first direction to the second direction,
wherein the inner shape of the coil pattern has a sixth section corresponding to the first section and extending in the first direction, a seventh section corresponding to the third section and extending in the second direction, an eighth section corresponding to the fourth section and extending obliquely with respect to the first direction, and a ninth section corresponding to the fifth section and curved such that the extending direction thereof changes from the first direction to the second direction, and
wherein the ninth section is connected to the eighth section not through a section extending in the first direction.