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:
May. 13, 2014
Filed:
Jul. 23, 2010
Fuminori Tateishi, Atsugi, JP;
Fuminori Tateishi, Atsugi, JP;
Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa, JP;
Abstract
An object is to provide a chemical solution application apparatus capable of applying a chemical solution evenly and without irregularity by a spin coating method. A plurality of nozzles are provided for applying a chemical solution to an application object that is fixed over a stage. Each of the nozzles is individually mobile in vertical and horizontal directions. For this reason, controlling a discharging point or pattern is possible, and application responding to a wider viscosity range of chemical solutions is possible. By implementing the present invention, a chemical solution application apparatus equipped with a discharging method of a chemical solution by which a coating film having a small film thickness distribution over an entire substrate and an even thickness can be obtained, as well as for which use efficiency is improved by cutting down on waste of a chemical solution to be discharged.