High efficiency inductor, method for manufacturing the inductor, and packaging structure using the inductor

• US 7,417,525 B2
• Filed: 05/03/2006
• Issued: 08/26/2008
• Est. Priority Date: 10/19/2005
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kwon, Jong Oh, Kim, Woon Bae, Song, In Sang, Hwang, Jun Sik, Moon, Chang youl, Lee, Moon Chul
• Primary Examiner(s): Mai; Anh T
• Application Number:
  US11/416,311
• Publication Number:
  US 20070085648A1
• Time in Patent Office: 846 Days
• Field of Search: 336/200, 336/223, 336/232, 257701-703, 257/774, 257/758
• US Class Current: 336/200
• CPC Class Codes: H01F 17/0033 with the coil helically wound around a magnetic core
• CPC Class Codes: H01F 2017/002 Details of via holes for interconnecting the layers
• CPC Class Codes: H01F 41/041 Printed circuit coils apparatus or processes for manufacturing printed circuits in general H05K3/00
• CPC Class Codes: H01L 27/08 including only semiconductor components of a single kind
• CPC Class Codes: H01L 28/10 Inductors

Abstract

An inductor is provided which includes a plurality of via holes vertically passing through a substrate, the substrate having insulating properties, vertical conductive portions filling the via holes, and horizontal conductive portions connecting each individual vertical conductive portions at the top and the bottom of the substrate to form a single coil structure with the vertical conductive portions.

Claims

1. An inductor comprising:

a substrate comprising;

a plurality of vertically formed via holes;

a plurality of vertical conductive portions filling each of the via holes; and

a plurality of first horizontal conductive portions and a plurality of second horizontal conductive portions , wherein each of the first and second horizontal conductive portions connect two of the vertical conductive portions at a top and a bottom of the substrate, respectively; and

wherein one of the vertical conductive portions is connected to two other vertical conductive portions, wherein the two other vertical conductive portions are separated from each other at the top and the bottom of the substrate, wherein the vertical conductive portions and the first and second horizontal conductive portions form a single coil structure; and

an electrode portion formed in a first end and a second end of the coil structure.

2. The inductor of claim 1, wherein the substrate is a high resistance silicone substrate.

3. The inductor of claim 1, wherein the plurality of via holes are disposed in two rows along the substrate, and each of the first horizontal conductive portions connect two of the vertical conductive portions, wherein the connected vertical conductive portions are in a different row from each other and are across from each other, at the top or bottom of the substrate, respectively.

4. The inductor according to claim 1, wherein the substrate has an insulating property and wherein the vertical conductive portions and the first and second horizontal conductive portions are formed of conductive material.

5. The inductor of claim 1, wherein when the substrate is an upper substrate of a packaging for a device, a cavity sinking to a predetermined depth from a second surface of the substrate opposite the device is formed to provide an operation space for the device.

6. The inductor according to claim 5, wherein the device comprises a micro device.

7. A packaging structure comprising:

a base substrate on which a device is formed;

an upper substrate hermetically sealing the device and covering the base substrate, comprising at least four via holes, vertically formed and disposed in two rows along the upper substrate;

a plurality of vertical conductive portions packed in the via holes;

a plurality of first horizontal conductive portions, pairing two of the vertical conductive portions located in an independent row and across from each other, and electrically connecting the two vertical conductive portions to a first side of the upper substrate;

a plurality of second horizontal conductive portions pairing two of the vertical conductive portions located in an independent row and diagonally across from each other, and electrically connecting the two vertical conductive portions to a second side of the upper substrate, and forming a single coil structure with the vertical conductive portions and the first horizontal conductive portions; and

an electrode portion which electrically connects the coil structure to the device.

8. The packaging structure of claim 7, wherein the upper substrate is formed of high resistance material.

9. The packaging structure of claim 7, wherein the electrode portion is formed on a first end and a second end of the coil structure and comprises a via electrode penetrating the upper substrate and a connection electrode formed on the base substrate and electrically in contact with the via electrode.

10. The packaging structure of claim 7, wherein the electrode portion is formed on a first end and a second end of the coil structure and comprises extended electrodes electrically connected to the coil structure on the second side of the upper substrate and a connection electrode formed on the base substrate to be electrically in contact with the extended electrode.

11. The packaging structure of claim 7, wherein a cavity sinking to a predetermined depth is formed on the second side of the upper substrate in order to contain the device for packaging.

12. The packaging structure of claim 7, wherein the device is a microelectromechanical system device.

13. The packaging structure of claim 7, wherein the microelectromechanical system device is one of a micro switch and a high-frequency duplexer.

14. The packaging structure according to claim 7, wherein a plurality of devices are formed on the base substrate.

15. The packaging structure according to claim 7, wherein the upper substrate has an insulating property.

16. The packaging structure according to claim 7, wherein the first and second horizontal conductive portions are formed of conductive material.