Capacitor

• US 6,282,079 B1
• Filed: 11/30/1999
• Issued: 08/28/2001
• Est. Priority Date: 11/30/1998
• Status: Expired due to Fees

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Corporation
• Inventors: Nagakari, Shoken, Sadakane, Akihiro, Konushi, Shigeo
• Primary Examiner(s): Dinkins, Anthony
• Application Number:
  US09/451,620
• Time in Patent Office: 637 Days
• Field of Search: 361/306.1, 361/306.2, 361/306.3, 361/307, 361/308.1, 361/309-310, 361/321.2, 361/321.5
• US Class Current: 361/303
• CPC Class Codes: H01G 4/232 electrically connecting two or more layers of a stacked or rolled capacitor

Abstract

On the periphery of a polygonal main body formed by alternately placing electrode plates and dielectric layers, the electrode plates being alternately first and second electrode plates from the bottom, a plurality of first terminal electrodes connected with the first electrode plate and a plurality of second terminal electrodes connected with the second electrode plate are alternately formed. The first terminal electrodes or second terminal electrodes are provided at the corners of the main body. And the first terminal electrodes lies after the second terminal electrodes in a peripheral direction in a plan view of the capacitor. This capacitor can have a large capacitor and a low impedance in a wide frequency region.

Claims

1. A capacitor, comprising:

a first electrode plate having the form of a polygon, and a plurality of electrode leads on a periphery thereof;

a dielectric layer placed on the first electrode plate;

a second electrode plate place on the dielectric layer, the second electrode plate having the form of a polygon, and a plurality of electrode leads on a periphery thereof, each of electrode leads of the second electrode plate being spaced apart from each of the electrode leads of the first electrode plate by an equal distance in a peripheral direction in a plan view;

a plurality of first terminal electrodes each connected with one of the plurality of electrode leads of the first electrode plate respectively; and

a plurality of second terminal electrodes each collected with one of the plurality of electrode leads of the second electrode plate, respectively.

2. A capacitor according to claim 1, wherein the first electrode plate has the plurality of electrode leads at corners thereof, and the second electrode plate has the plurality of electrode leads on sides thereof.

3. A capacitor according to claim 1, further comprising another set of a third electrode plate identical to the first electrode plate, a fourth electrode plate identical to the second electrode plate, and a dielectric layer placed between the third and fourth electrode plates, the plurality of electrode leads of the third electrode plate being respectively connected with the first terminal electrodes, and the plurality of electrode leads of the fourth electrode plate being respectively connected with the second terminal electrodes.

4. A capacitor according to claim 1, wherein the first electrode plate has the plurality of electrode leads at corners thereof, and the second electrode plate has the plurality of electrode leads on sides thereof.

5. A capacitor according to claim 1, wherein the first electrode plate is substantially in the form of a square and has four leads at the respective four corners thereof, and the second electrode plate is substantially in the form of a square and has on electrode lead at a middle of each of the four sides thereof.

6. A capacitor according to claim 5, further comprising another set of a third electrode plate identical to the first electrode plate, a fourth electrode plate identical to the second electrode plate, and a dielectric layer placed between the third and fourth electrode plates, the plurality of electrode leads of the third electrode plate being repectively connected with the first terminal electrodes, and the plurality of electrode lead of the fourth electrode plate being respectively connected with the second terminal electrodes.

7. A capacitor according to claim 1, wherein the first electrode plate is substantially in the form of a square and has on electrode lead on each of the four sides thereof, and the second electrode plate is substantially in the form of a square and has on electrode lead on each of the four sides thereof.

8. A capacitor according to claim 7, wherein the first electrode plate further has two electrode leads at opposite two corners, and the second electrode plate further has two electrode leads at opposite two corners.

9. A capacitor according to claim 1, wherein the first electrode plate is substantially in the form of a square and has two electrode leads on each of opposite two sides thereof and one electrode lead on each of the remaining opposite two sides thereof, and the second electrode plate is substantially in the form of a square and has two electrode leads on each of opposite two sides thereof and one electrode lead on each of the remaining opposite two sides thereof.

10. A capacitor according to claim 1, wherein the first electrode plate is substantially in the form of a square and has two electrode leads on each of the four sides thereof, and the second electrode plate is substantially in the form of a square and has two electrode leads on each of the four sides thereof.

11. A capacitor according to claim 1, wherein the first electrode plate is substantially in the form of a square and has one electrode lead at a middle of each of the four sides thereof and four electrode leads at the respective four corners thereof, and the second electrode plate is substantially in the form of a square and has two electrode leads o each of the four side thereof.

12. A capacitor, comprising:

a first electrode plate having substantially the form of a polygon, and a plurality of electrode leads on a periphery thereof;

a first dielectric layer placed on the first electrode plate;

a second electrode plate place on the first dielectric layer, the second electrode plate having the form of a polygon and a plurality of electrode leads on a periphery thereof;

a second dielectric layer placed on the second electrode plate;

a third electrode plate identical to the first electrode plate placed on the second dielectric layer;

a third dielectric layer placed on the third electrode plate;

a fourth electrode plate identical to the second electrode plate placed on the third dielectric layer;

a plurality of first terminal electrodes each connected with one of the plurality of first electrode leads and one of the plurality of the third electrode leads, respectively; and

a plurality of second terminal electrodes each connected with one of the plurality of second electrode leads and one of the plurality of fourth electrode leads, respectively.

13. The capacitor according to claim 12, wherein the first electrode plate has the plurality of electrode leads at corners thereof, and the second electrode plate has the plurality of electrode leads on sides thereof.

14. The capacitor according to claim 12, wherein each electrode lead of the first electrode plate is spaced apart from each electrode lead of the second electrode plate by the same distance in plan view.

15. The capacitor according to claim 14, wherein the first electrode plate has the plurality of electrode leads at corners thereof, and the second electrode plate has the plurality of electrode leads on sides thereof.

16. The capacitor according to claim 12, wherein the first electrode plate is substantially in the form of a square and has four leads, one at each of the corners thereof, and the second electrode plate is substantially in the form of a square and has an electrode lead at a middle of each side thereof.

17. The capacitor according to claim 12, wherein the first electrode plate is substantially in the form of a square and has an electrode lead on each side thereof and the second electrode plate is substantially in the form of a square and has an electrode lead on each side thereof.

18. The capacitor according to claim 17, wherein the first electrode plate further has two electrode leads at opposite two corners, and the second electrode plate further has two electrode leads at opposite two corners.

19. A capacitor according to claim 12, wherein the first electrode plate is substantially in the form of a square and has two electrode leads on each of opposite two sides thereof and one electrode lead on each of the remaining opposite two sides thereof, and the second electrode plate is substantially in the form of a square and has two electrode leads on each of opposite two sides thereof and one electrode lead on each of the remaining opposite two sides thereof.

20. A capacitor according to claim 12, wherein the first electrode plate is substantially in the form of a square and has two electrode leads on each of the four sides thereof, and the second electrode plate is substantially in the form of a square and has two electrode leads on each of the four sides thereof.

21. A capacitor according to claim 12, wherein the first electrode plate is substantially in the form of a square and has one electrode lead at a middle of each of the four sides thereof and four electrode leads at the respective four corners thereof, and the second electrode plate is substantially in the form of a square and has two electrode leads o each of the four side thereof.