Organic thin film EL device and method for making the same

An organic thin film EL device, comprising:

• a transparent insulative substrate and a sealing cap which are bonded together by an ultraviolet-activated adhesive;
• wherein said ultraviolet-activated adhesive is composed of a combination of a first adhesive to be hardened by a smaller irradiation amount of ultraviolet rays and a second adhesive to be hardened by a larger irradiation amount of ultraviolet rays.

An organic thin film EL device, comprising:

• a transparent insulative substrate and a sealing cap which are bonded together by an ultraviolet-activated adhesive;
• wherein said ultraviolet-activated adhesive is composed of a combination of a first adhesive to be hardened by a smaller irradiation amount of ultraviolet rays, a second adhesive to be hardened by a larger irradiation amount of ultraviolet rays, and a third adhesive to be hardened by a medium irradiation amount of ultraviolet rays.

A method for making an organic thin film EL device composed of a transparent insulative substrate and a sealing cap which are bonded together by an ultraviolet-activated adhesive, comprising the steps of:

• disposing a plurality of said ultraviolet-activated adhesives with different hardening conditions to the irradiation of ultraviolet rays between said transparent insulative substrate and said sealing cap;
• and
• irradiating ultraviolet rays with different irradiation conditions to said plurality of the ultraviolet-activated adhesives in a plurality of separate steps so that said adhesives with different hardening conditions are hardened separately in each of said plurality of separate steps.