Patent ID: 6257945
Filing Date: 2001-07-10
Classification: H01J

Abstract:
A method for producing a picture display device, comprising:connecting a glass tube in an opening area of a through-hole formed at a pre-set position of a major surface of a first substrate opposite to its other major surface facing a plate member placed at a pre-set separation from said first substrate, said first substrate and the plate member placed thereon constituting an assembly the peripheral portions of which are hermetically sealed to form a hermetically sealed assembly;applying a calcined solid frit body held by a holding member in a vicinity of a bond of the glass tube to the through-hole in the glass tube;evacuating the space between the first substrate and the plate member via said glass tube;radially compressing a pre-set portion of the glass tube to form a constricted portion, with the calcined solid frit body being left between the constricted portion and the opening area of said through-hole;moving the calcined solid frit body to the constricted portion of the glass tube;charging the gas into the space between the first substrate and the plate member via said glass tube; andmelting and solidifying the calcined solid frit in the constricted portion in the glass tube for hermetically sealing the constricted portion;wherein the holding member for the calcined solid frit body is made up of a metal plate inserted into the calcined solid frit body and a spring member for holding the metal plate in the glass tube;said metal plate being heated by high frequency heating for dismounting the calcined solid frit body from the holding member for moving the calcined solid frit body to the constricted portion.