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:
Aug. 25, 2009
Filed:
Apr. 05, 2006
Applicant:
Yukio Taniguchi, Yokomaha, JP;
Inventor:
Yukio Taniguchi, Yokomaha, JP;
Assignee:
Kabushiki Kaisha Ekisho Sentan Gijutsu Kihatsu Center, Yokohama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03F 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of exposing a surface to be exposed and an attenuated type phase shift mask for use in the method are provided herein. The attenuated type phase shift mask has a reference area allowing a light radiated from a light source to pass through and an amplitude and phase modulation area allowing a part of said light to pass through. The phase modulation amount of the amplitude and phase modulation area relative to the reference area of the attenuated type phase shift mask is {360°×n+(182° to 203°)} (n is an integer).