Capacitor and method for manufacturing same
AssigneeRubycon Corporation
InventorTomonao Kako
Life of this patent
Estimating the term…
Abstract
A capacitor (1) includes a main body (10) in which a dielectric layer (13) and an electrode layer (11) are laminated, and an external electrode (20) connected to at least a part of the main body. The electrode layer (11) includes a heavy edge portion (16) with a connecting part (18), which connects to the external electrode and is thicker than an internal electrode part (15). The capacitor (1) further includes an edge support layer (12) that is made of metal and is laminated on the heavy edge portion (16).
Claims23
A capacitor comprising a main body, in which a dielectric layer film and an electrode layer film are repeatedly laminated, and an external electrode connected to at least a part of the main body,
- wherein the electrode layer film includes an internal electrode part and a heavy edge portion, the heavy edge portion being a connecting part, which connects to the external electrode and is thicker than the internal electrode part, and
- the capacitor further comprises an edge support layer film that includes at least one layer film that is made of metal and formed over at least one of a top surface and a bottom surface of the heavy edge portion of the electrode layer film, the edge support layer film being integrated with the heavy edge potion and increasing thickness of the connecting part, and the dielectric layer film, the electrode layer film and the edge support layer film being repeatedly laminated, and
- wherein the electrode layer film includes a first metal and the edge support layer film includes a second metal with a lower melting point and/or boiling point than the first metal.
A method of manufacturing a capacitor including a main body in which a dielectric layer film and an electrode layer film are repeatedly laminated, wherein at least part of the main body is connected to external electrodes,
- the method comprising forming an electrode layer film on a dielectric layer film, wherein the forming the electrode layer film includes forming an internal part and heavy edge portions, the heavy edge portions being connecting parts that connect to the external electrodes respectively and are thicker than the internal electrode part, and
- the method further comprises forming an edge support layer film that includes at least one layer film formed over a surface of the heavy edge portions of the electrode layer film, the edge support layer film being integrated with the heavy edge potion and increasing thickness of the connecting part, and the dielectric layer film, the electrode layer film and the edge support layer film being repeatedly laminated,
- wherein the electrode layer film includes a first metal and the edge support layer film includes a second metal with a lower melting point and/or boiling point than the first metal.
A system for manufacturing a capacitor including a main body, in which a dielectric layer film and an electrode layer film are repeatedly laminated, wherein at least part of the main body is connected to an external electrode,
- the system comprising:
- a chamber that provides a reduced pressure environment;
- a transferring device that transfers workpiece for the main body during manufacturing inside the chamber;
- a dielectric layer film forming device that forms the dielectric layer film on the workpiece;
- an electrode layer film forming device that forms the electrode layer film on the dielectric layer film together with heavy edge portions with connecting parts that connect to the external electrode and are thicker than an internal electrode part, the dielectric layer film forming device and the electrode layer film forming device being disposed along the transferring device inside the chamber;
- and
- at least one edge support layer film forming device that is disposed along the transferring device inside the chamber and forms an edge support layer film over a surface of the heavy edge portions of the electrode layer film, the edge support layer film being integrated with the heavy edge potion and increasing thickness of the connecting part, and the dielectric layer film, the electrode layer film and the edge support layer film being repeatedly laminated, and
- wherein the electrode layer film includes a first metal and the edge support layer film includes a second metal with a lower melting point and/or boiling point than the first metal.
Dependencies are inferred from the claim text.