Patent ID: 8601834

Claim:
A manufacturing method of an evacuated hermetically sealed container comprising a pair of glass substrates opposite each other, and a frame member arranged between the pair of substrates to define together with the pair of substrates an atmosphere of reduced pressure inside thereof, wherein the manufacturing method comprises steps of: arranging, between a frame member and one of a pair of substrates, a joining member (i) having a viscosity with a negative temperature coefficient, (ii) having a softening temperature lower than those of the one of the pair of substrates and the frame member, (iii) having a thickness ratio A/B, where A represents a thickness at an inner side of the joining member and B represents a thickness at an outer side of the joining member, and (iv) having a frame shape, so that the joining member contacts the one of the pair of substrates and contacts the frame member so as to form an assembly unit having an inner space being surrounded with the frame member and the pair of substrates; heating and melting the joining member, while pressing the joining member, wherein a center of an incoming heat flux distribution in a direction of a width of the joining member is positioned more closely to the inner space than a center of the width of the joining member so as to reduce the thickness ratio A/B; and evacuating the inner space so as to be reduced in pressure relative to atmospheric pressure.