Patent ID: 8490434

Claim:
A process for producing an electronic device, the process comprising: (i) applying a sealing material paste to a second sealing region in the form of a frame on a second glass substrate, to produce a frame-form coating layer, wherein the sealing material paste is prepared by mixing a sealing material with an organic binder, the sealing material comprises a sealing glass and a laser absorbent, the second glass substrate comprises a second surface comprising the second sealing region which corresponds to a first sealing region on a first glass substrate, and the first glass substrate comprises a first surface comprising the first sealing region; (ii) irradiating the frame-form coating layer with a laser light for firing to heat the coating layer such that a heating temperature of the sealing material is within a range of at least (T+213° C.) and at most (T+480° C.) relative to a softening temperature T (° C.) of the sealing glass, thereby firing the sealing material while burning out the organic binder, to form a sealing material layer; (iii) laminating the first glass substrate and the second glass substrate with the sealing material layer, such that the first surface and the second surface face each other; and (iv) irradiating the sealing material layer with a laser light for sealing to melt the sealing material layer and thereby seal an electronic element portion situated between the first glass substrate and the second glass substrate, wherein: the irradiating (iv) of the sealing material layer occurs through the first glass substrate or the second glass substrate; the frame-form coating layer is irradiated (ii) with at least one laser light along it such that, relative to the softening temperature T (° C.) of the sealing glass: heating temperatures of the coating layer during an irradiation initiation period and during an irradiation completion period are within a range of at least (T+350° C.) and at most (T+550° C.); and a heating temperature of the coating layer during a scanning irradiation period is within a range of at least (T+213° C.) and at most (T+480° C.), such that a heating temperature of the coating layer during the irradiation initiation period is different than the heating temperature of the coating layer during the scanning irradiation period.