Method for fabricating solid electrolytic capacitors

Patent metadata

Field	Value
Publication number	US-9490075-B2
Application number	US-201514797610-A
Country	US
Kind code	B2
Filing date	Jul 13, 2015
Priority date	Mar 14, 2013
Publication date	Nov 8, 2016
Grant date	Nov 8, 2016

Abstract

The instant disclosure relates to an improved method for the production of solid electrolytic capacitor, comprising the following steps. First, provide an insulating substrate. Next, form a plurality of conducting gels including aluminum powder on the insulating substrate. Thirdly, execute a high-temperature sintering process to metalize the conducting gels to form a plurality of aluminum plates. Next, form a dielectric layer on every aluminum plate. Then form an isolation layer on every dielectric layer to define an anodic region and a cathodic region. Lastly, form a conductive layer on the dielectric layer of every cathodic region, thus defining a solid electrolytic capacitor unit.

First claim

What is claimed is:

1. A method for improving fabrication of solid electrolytic capacitors comprising the steps of:
employing a cold press process to form an aluminum pellet from a powder of aluminum;
forming a dielectric layer on the surface of the aluminum pellet; and
forming a conductive layer on the surface of the dielectric layer;
wherein the step of forming the conductive layer further comprises the steps of:
forming a conductive polymer layer on the surface of the dielectric layer;
forming a carbon gel layer on the surface of the conductive polymer layer and
forming a silver gel layer on the surface of the carbon gel layer.

2. The method as recited in claim 1 , wherein the powder of aluminum has uneven and cavernous surfaces.

3. The method as recited in claim 1 , wherein the step of cold press forming the aluminum pellet includes a lead electrode to be inserted with the aluminum powder to form the aluminum pellet, and a compression load ranging from 3 to 15 MN/m 2 .

4. A method for improving fabrication of solid electrolytic capacitors comprising the steps of:
employing a cold press process to form an aluminum pellet from a powder of aluminum;
forming a dielectric layer on the surface of the aluminum pellet; and
forming a conductive layer on the surface of the dielectric layer;
wherein the step of forming the conductive layer further comprises the steps of:
forming a conductive polymer layer on the surface of the dielectric layer; and
forming a silver gel layer on the surface of the conductive polymer layer.

Assignees

• Apaq Technology Co Ltd

Inventors

• Lin Ching-Feng
• Chen Ming-Tsung

Classifications

• H01G9/0029 Primary

  Processes of manufacture · CPC title

• H01G9/045

  based on aluminium · CPC title

• H01G9/0425

  specially adapted for cathode · CPC title

• H01G9/0036 Primary

  Formation of the solid electrolyte layer · CPC title

• H01G9/15

  Solid electrolytic capacitors (H01G11/00 takes precedence) · CPC title