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:
Jan. 23, 2007
Filed:
Feb. 16, 2004
Akihiko Nakamura, Kanagawa, JP;
Taiichiro Aoki, Kanagawa, JP;
Seiji Ohishi, Kanagawa, JP;
Tamotsu Sasaki, Tokyo, JP;
Akihiko Nakamura, Kanagawa, JP;
Taiichiro Aoki, Kanagawa, JP;
Seiji Ohishi, Kanagawa, JP;
Tamotsu Sasaki, Tokyo, JP;
Tokyo Ohka Kogyo Co., Ltd., Kanagawa, JP;
Abstract
A multi-stage type processing apparatus which can be positioned in a limited space without having a complicated driving mechanism, includes processing units which are stacked in a multi-stage state in the vertical direction. Each processing unit has a cup surrounding a substrate and a chuck for retaining and rotating a substrate, and the cup can be elevated and lowered with respect to the chuck. A cylinder unit is contracted and thereby all the cups are unitarily lowered, so that the top surface of the chuck is located in a slightly upper position with respect to the top surface of the cup. In this state, a substrate is mounted on the chuck and attracted. Next, the cylinder unit is extended and thereby all the cups are unitarily elevated so as to accommodate the substrate therein. In this state, developing liquid is dropped from a nozzle for developing liquid onto the center of the substrate, and a motor is driven to rotate the chuck (the substrate) via a drive shaft and a timing belt to allow the developing liquid to cover the entire surface of the substrate.