Patent ID: 8476550

Claim:
A manufacturing method of a hermetic container having first and second dielectric substrates comprising: a step of providing a first electrode operating also as a bonding material on one of the first and second substrates, while providing a second electrode divided into a plurality of segments for simultaneously applying thereto potentials different from each other on the other of the first and second substrates; a step of arranging the first and second substrates, so that the first and second electrodes are opposed to each other; and a first bonding step of heating the first electrode while pressing the first and second substrates to each other to bond the first and second substrates together, wherein the first bonding step includes steps of: pressing the first and second substrates to each other by an electrostatic force generated between the first and second electrodes by applying a potential difference between the first and second electrodes; softening and melting the first electrode, and then cooling and solidifying the first electrode, by simultaneously forming a locally-heated spot in the bonding material and moving the locally-heated spot relatively against the bonding material; and increasing the potential difference between the first electrode and the segment of the second electrode at which the locally-heated spot is positioned correspondingly to the moving of the locally-heated spot.