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:
Feb. 09, 1988
Filed:
Jan. 16, 1987
Kazufumi Ogawa, Hirakata, JP;
Masaru Sasago, Hirakata, JP;
Masayuki Endo, Izumi, JP;
Takeshi Ishihara, Neyagawa, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An exposure apparatus for use in manufacturing a semiconductor device which includes a KrF laser as an Excimer laser, a reduction projective type exposure optical system for applying laser beam emitted the laser on a wafer, and a support with vibration absorption function on which the KrF laser is mounted separately from the exposure optical system. The light axis of a light path between the KrF laser and the exposure optical system coincides with direction of vibration which is absorbed in the support. Thereby, shock wave produced from KrF laser upon discharge operation may be absorbed in said support without giving any bad effect to other components.