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US 9,959,958 B1Granted
PTC circuit protection device and method of making the same
AssigneeFuzetec Technology Co., Ltd.
InventorsJack Jih-Sang Chen, Chang-Hung Jiang
Life of this patent
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Abstract
A PTC circuit protection device, includes: two PTC units, each of the PTC units including a first insulating layer, a first electrically conductive layer, a PTC polymeric layer, a second electrically conductive layer, a second insulating layer, a first electrode, a second electrode; an insulating bridge layer interconnecting the first insulating layers of the PTC units; and first and second gaps formed between the PTC units and located at two opposite sides of the insulating bridge layer.
Claims13
A PTC circuit protection device, comprising:
- two PTC units, each of said PTC units including a first insulating layer, a first electrically conductive layer stacked on said first insulating layer, a PTC polymeric layer stacked on said first electrically conductive layer, a second electrically conductive layer stacked on said PTC polymeric layer, a second insulating layer stacked on said second electrically conductive layer, a first electrode electrically connected to said first electrically conductive layer and electrically insulated from said second electrically conductive layer, a second electrode electrically connected to said second electrically conductive layer and electrically insulated from said first electrically conductive layer;
- an insulating bridge layer interconnecting said first insulating layers of said PTC units;
- and
- first and second gaps formed between said PTC units and located at two opposite sides of said insulating bridge layer.
1 more element
A method of making a PTC circuit protection device, comprising:
- providing a PTC component that includes a first electrically conductive unit, a second electrically conductive unit and a PTC polymeric material unit sandwiched between the first and second electrically conductive units,
- disposing a first insulating unit on the first electrically conductive unit of the PTC component, and disposing a second insulating unit on the second electrically conductive unit of the PTC component;
- disposing a lower electrode component on the first insulating unit oppositely of the PTC component;
- disposing an upper electrode component on the second insulating unit oppositely of the PTC component;
- hot pressing the PTC component, the first and second insulating units, and the lower and upper electrode components, wherein the PTC component, the second insulating unit and the upper electrode component constituting a laminate body;
- forming a first gap in the lower electrode component such that the lower electrode component is divided into two separated lower electrode units, and forming a second gap in the laminate body such that the laminate body is divided into two separated laminating units, so as to form two interconnected PTC units each of which includes one of the lower electrode units, one of the laminating units, and a part of the first insulating unit 22.
3 more elements
Dependencies are inferred from the claim text.