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:
Oct. 14, 2003
Filed:
Jul. 05, 2001
Kozo Arao, Tokyo, JP;
Noboru Toyama, Osaka, JP;
Yuichi Sonoda, Nara, JP;
Yusuke Miyamoto, Kyoto, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present process for electrodepositing a zinc oxide film comprises the steps of immersing a substrate and an opposing electrode in an electrodeposition bath which contains zinc nitrate and is kept heated, and forming the zinc oxide film on the substrate by passing a current between the substrate and the opposing electrode, wherein the process further includes a step of trapping the particles of zinc oxide precipitated in the electrodeposition bath by circulating or stirring the bath before the formation of the zinc oxide film, whereby the present process can prevent the generated zinc oxide powder from depositing on the surfaces of the substrate and the zinc oxide film formed by electrodeposition when restarting or starting the formation of a zinc oxide film by the electrodeposition using an electrodeposition apparatus, and hence the formation of a uniform zinc oxide film free from defects.