Nippon Electric Glass Co., Ltd.

Takuji Oka

Toru Shiragami

Hiroki Katayama

Yoshikatsu Nishikawa

Masayuki Hirose

Koichi Yabuuchi

Shigeru Sera

Masashi Tabe

Hiroyuki Yasuda

Kozo Kobayashi

Naoki Toyofuku

A composite ceramic powder of the present invention includes: a LAS-based ceramic powder having precipitated therein &#x3b2;-eucryptite or a &#x3b2;-quartz solid solution as a main crystal; and TiOpowder and/or ZrOpowder.

Composite ceramic powder, sealing material, and composite ceramic powder production method

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.

Method for producing airtight package by sealing a glass lid to a container

Provided are an airtight package that can increase the bonding strength between the sealing material layer and the container and a method for manufacturing the same. An airtight packageincludes: a containerwith a frame; a glass liddisposed on top of the frameand sealing the container; and a sealing material layerdisposed between the frameand the glass lidand bonding the glass lidand the containertogether, wherein in the sealing material layera bonding surfacebetween the sealing material layerand the containeris larger than a bonding surfacebetween the sealing material layerand the glass lid

Airtight package and method for manufacturing same

A method of manufacturing a tempered glass sheet of the present invention includes: subjecting a glass sheet to be tempered having a sheet thickness of 2.0 mm or less to ion exchange treatment; and performing heat treatment at a temperature of 50&#xb0; C. or more and less than a strain point of the glass sheet to be tempered.

Method for producing toughened glass plate

Provided is a tempered glass substrate formed by a float method, comprising a bottom surface and a top surface, wherein a compression stress value of the bottom surface is larger than a compression stress value of the top surface.

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Shiga, Japan

Takuji Oka