Patent ID: 6256849
Filing Date: 2001-07-10
Classification: B41J,H01L,Y10S,Y10T

Abstract:
A method for fabricating a microactuator used for an inkjet head comprising the steps of:sequentially laminating a lower electrode and an oxide piezoelectric sheet over a vibrating plate formed integrally with a chamber plate having a plurality of uniformly spaced solution chambers;coating a first photoresist film over an upper surface of said oxide piezoelectric sheet, and removing unnecessary portions of said first photoresist film while partially exposing said upper surface of the oxide piezoelectric sheet among said removed portions of the first photoresist film;coating an electrode layer to a desired thickness over said exposed upper surface of said oxide piezoelectric sheet and an upper surface of said first photoresist film remaining on said oxide piezoelectric sheet;removing said remaining first photoresist film by use of a rinsing solution while simultaneously removing portions of said electrode layer disposed over said remaining first photoresist film, thereby forming upper electrodes while partially exposing an upper surface of the oxide piezoelectric sheet among the upper electrodes;coating a second photoresist film over respective upper surfaces of said upper electrodes and said exposed upper surface of said oxide piezoelectric sheet;removing unnecessary portions of said second photoresist film not covering said upper electrodes while allowing remaining portions of said second photoresist film to have a larger area that said upper electrodes associated therewith, respectively;patterning said oxide piezoelectric sheet by use of an etchant while using said second photoresist film remaining on said upper electrodes as a mask, thereby forming oxide piezoelectric elements; andremoving said remaining second photoresist film.