Title:
ELECTROSTRICTIVE ELEMENT
Document Type and Number:
Japanese Patent JPH02125676
Kind Code:
A
Abstract:
PURPOSE:To prevent penetration of moisture from outside air by covering the sides of an inner electrode conductor with an insulating porous material impregnated with an insulating liquid. CONSTITUTION:Four vertical sides of an inner electrode conductor is covered with a pipe 2 of porous Teflon impregnated with silicon oil, which is further covered with a pipe 3 of vinyl chloride. Gaps defined at the opposite ends of the vinyl chloride pipe 3 between the pipe 3 and the Teflon pipe 2 are filled with epoxy resin 4 such that the epoxy resin 4 reaches the electrostrictive element body 1, whereby the silicone oil is enclosed between the inner wall of the vinyl chloride pipe 3 and the electrostrictive element body 1. According to such arrangement, penetration of moisture can be prevented effectively.
Inventors:
NISHIZAWA TAKESHI
Application Number:
JP27983988A
Publication Date:
May 14, 1990
Filing Date:
November 04, 1988
Export Citation:
Assignee:
NEC CORP
International Classes:
H01L41/083; H01L41/09; (IPC1-7): H01L41/09
Attorney, Agent or Firm:
Shin Uchihara