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.:

US 7940441 B1

PDF
Full Text
Expired
Date of Patent:
May. 10, 2011

Filed:

Jan. 29, 2007
Applicants:

Koichiro Tanaka, Isehara, JP;

Hirotada Oishi, Atsugi, JP;

Inventors:

Koichiro Tanaka, Isehara, JP;

Hirotada Oishi, Atsugi, JP;

Assignee:

Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02B 26/10 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method for rapidly performing laser irradiation in a desired position as laser irradiation patterns are switched is proposed. A laser beam emitted from a laser oscillator is entered into a deflector, and a laser beam which has passed through the deflector is entered into a diffractive optical element to be diverged into a plurality of laser beams. Then, a photoresist formed over an insulating film is irradiated with the laser beam which is made to diverge into the plurality of laser beams, and the photoresist irradiated with the laser beam is developed so as to selectively etch the insulating film.


Find Patent Forward Citations

Tanaka, Koichiro. (2011). Manufacturing method of memory element, laser irradiation apparatus, and laser irradiation method (U.S. Patent No. 7940441). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7940441

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