Abstract:
Provided is an actuator device including a piezoelectric element formed of a lower electrode, a piezoelectric layer, and an upper electrode, and displaceably provided on a substrate with a zirconium oxide layer interposed therebetween, the substrate having a silicon oxide layer formed by thermal oxidation on at least a surface, and an intermediate layer made of at least one material selected from the group consisting of titanium oxide, hafnium oxide, aluminum oxide, calcium oxide, and rare earth oxide, and provided between the silicon oxide layer and the zirconium oxide layer.
Abstract:
PROBLEM TO BE SOLVED: To provide an MEMS switch for suppressing warpage of a material due to stress, and reducing dispersion of an electric characteristic. SOLUTION: This switch includes: drive parts 8a and 8b each having a plate-like elastic body with one end or both ends fixed to a board, a lower electrode formed on the upper surface of the elastic body, a piezoelectric body formed on the upper surface of the lower electrode and an upper electrode formed on the upper surface of the piezoelectric body; a contact 8c formed in a part of the drive parts; a signal line 3b with at least one end fixed to the board and extended to the contact; and a lock part 9 jointed to the board to support the drive parts 8a and 8b and formed of an insulating material. The drive parts 8a and 8b contact the signal line 3b through the contact 8c, and the lock part 9 supports the drive parts 8a and 8b from the side opposite to the signal line 3b. For instance, when the lock part 9 is structured to support the drive parts 8a and 8b in a hole, a cutout part or the like, warpage of a material due to stress is suppressed. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an MEMS switch for suppressing warpage of a material due to stress, and reducing dispersion of an electric characteristic. SOLUTION: This switch includes: drive parts 8a and 8b each having a plate-like elastic body with one end or both ends fixed to a board, a lower electrode formed on the upper surface of the elastic body, a piezoelectric body formed on the upper surface of the lower electrode and an upper electrode formed on the upper surface of the piezoelectric body; a contact 8c formed in a part of the drive parts; a signal line 3b with at least one end fixed to the board and extended to the contact; and a lock part 9 jointed to the board to support the drive parts 8a and 8b and formed of an insulating material. The drive parts 8a and 8b contact the signal line 3b through the contact 8c, and the lock part 9 supports the drive parts 8a and 8b from the side opposite to the signal line 3b. For instance, when the lock part 9 is structured to support the drive parts 8a and 8b in a hole, a cutout part or the like, warpage of a material due to stress is suppressed. COPYRIGHT: (C)2010,JPO&INPIT