The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 27, 2018
Filed:
May. 14, 2014
Mitsubishi Materials Corporation, Tokyo, JP;
MITSUBISHI MATERIALS CORPORATION, Tokyo, JP;
Abstract
A composition containing a precursor of a ferroelectric thin film, a solvent, and a reaction control substance, can form a ferroelectric thin film by temporary firing and permanent firing of a coating film. The composition contains the reaction control substance in such an amount that a Young's modulus of a film formed in a step of temporary firing at a temperature of 200° C. to 300° C. becomes equal to or less than 42 GPa, and a Young's modulus of a film formed in a step of permanent firing at a temperature of 400° C. to 500° C. becomes equal to or greater than 55 GPa. Thus a thin film having high crystallinity can be formed which substantially does not crack at the time of permanent firing even if the thickness of the coating film formed per single coating operation is increased.