Piezoelektrisches Element, Verfahren zur Herstellung eines Piezoelektrischen Elements, Flüssigkeitsausstosskopf, Flüssigkeitsausstossvorrichtung
Anmelder: Canon Kabushiki Kaisha 🇯🇵
Details
- Veröffentlichungs-Nr.
- EP4755639
- Anmeldetag
- 5. Dezember 2025
- Veröffentlichung
- 10. Juni 2026
- Rechtsraum
- EP
- IPC
- B41J2/14, B41J2/16, H10N30/082
Abstract
The present disclosure provides a piezoelectric element (10) including upper and lower electrodes (102, 106) and a piezoelectric layer (104) provided on a base substrate and an insulation layer (108) covering at least the base substrate, the upper and lower electrodes, and the piezoelectric layer. The piezoelectric layer's longitudinal cross section has a tapered shape wider at the lower electrode side than at the upper electrode side. A side surface of the piezoelectric layer has a step surface parallel to the lower electrode, a first side surface from the step surface to the lower electrode, and a second side surface from the step surface to the piezoelectric layer's upper surface. An angle θ<sub>1</sub> between the step surface and the first side surface exceeds 135°. An angle θ<sub>2</sub> between the second side surface and an imaginary plane extended from the step surface and parallel to the lower electrode is 45° or more and less than 75°.
Anmelder
- Firma
- Canon Kabushiki Kaisha
- Land
- 🇯🇵 Japan
Japanischer Konzern mit Sitz in Tokio, der Kameras, Objektive, Drucker, Kopiergeräte sowie optische und medizinische Bildgebungstechnik entwickelt und herstellt.
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