ORGANIC EL DEVICE AND MANUFACTURING METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To ensure the adhesive thickness by measuring the adhesive thickness optically without performing destructive inspection, in an organic EL device where a sealing can for sealing an organic EL element is bonded to a substrate on which the organic EL element is formed.

SOLUTION: In a region of one surface 11 of a substrate 10 where an adhesive 40 is arranged, a light transmission film 60 consisting of a light transmitting film is interposed between the adhesive 40 and the substrate 10. When the refractive index difference between the light transmission film 60 and the adhesive 40, and the refractive index difference between the light transmission film 60 and the substrate 10 are set larger than the refractive index difference between the adhesive 40 and the substrate 10, thickness of the adhesive 40 can be measured at the position of the light transmission film 60 by irradiation of light from the other surface 12 side of the substrate 10.

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