Ultrasonic transducer and ultrasonic medical device
US-2017365769-A1 · Dec 21, 2017 · US
Method for producing a piezoelectric multilayer component and a piezoelectric multilayer component
US9825212B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9825212-B2 |
| Application number | US-201615132805-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 19, 2016 |
| Priority date | Jan 22, 2010 |
| Publication date | Nov 21, 2017 |
| Grant date | Nov 21, 2017 |
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- Title
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Abstract
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A piezoelectric multilayer component having a stack of sintered piezoelectric layers and inner electrodes arranged between the piezoelectric layers. A region which has poling cracks is present on the surface of at least one electrode, and the poling cracks are separated from a surface of at least one of the inner electrodes by the region having the poling cracks.
First claim
Opening claim text (preview).
What is claimed is: 1. A piezoelectric multilayer component comprising: a stack of sintered piezoelectric layers and inner electrodes arranged between the piezoelectric layers, wherein a region that comprises cracks is present on a surface of at least one of the inner electrodes, and wherein the cracks are separated from a surface of at least one of the inner electrodes by the region comprising the cracks; and wherein the region that comprises the cracks has at least one of a PbO content that is greater than a PbO content of the piezoelectric layers, and traces of PbPdO 2 . 2. The multilayer component according to claim 1 , wherein the cracks are substantially free of branching. 3. The multilayer component according to claim 1 , wherein the inner electrodes comprise Pd. 4. The multilayer component according to claim 1 , wherein the piezoelectric layers comprise lead zirconate titanate.
Assignees
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Classifications
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
- H01L41/0838Primary
Electricity · mapped topic
Electricity · mapped topic
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- What does patent US9825212B2 cover?
- A piezoelectric multilayer component having a stack of sintered piezoelectric layers and inner electrodes arranged between the piezoelectric layers. A region which has poling cracks is present on the surface of at least one electrode, and the poling cracks are separated from a surface of at least one of the inner electrodes by the region having the poling cracks.
- Who is the assignee on this patent?
- Epcos Ag
- What technology area does this patent fall under?
- Primary CPC classification H01L41/0838. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 21 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).