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:
Mar. 31, 2020
Filed:
Feb. 16, 2017
Nippon Electric Glass Co., Ltd., Otsu-shi, Shiga, JP;
Takuji Oka, Otsu, JP;
Toru Shiragami, Otsu, JP;
NIPPON ELECTRIC GLASS CO., LTD., Shiga, JP;
Abstract
Provided is a method for producing an airtight package that can reduce thermal stress occurring in the inside of a glass lid due to irradiation with laser light to prevent occurrence of cracks and the like in the glass lid. A method for producing an airtight package in which a containercontaining a devicemounted therein is sealed with a glass lidincludes the steps of: mounting the deviceto an interior of the container; disposing a sealing materialbetween a frameof the containerand the glass lidand placing the glass lidon top of the frameof the container; and irradiating the sealing materialthrough the glass lidwith laser light while scanning the laser light along the frameto melt the sealing materialby heat and form a sealing material layer, thus sealing the glass lidand the frametogether with the sealing material layer, wherein irradiation with the laser light is started from an irradiation start point B, then performed by scanning the laser light a plural number of times all around along the frame, and then terminated at an irradiation end point C located ahead of the irradiation start point B in a direction of the scanning A.