EL device sealing plate, multiple sealing plate-producing mother glass substrate, and EL device

摘要

There is provided an EL device which has sufficient strength to external pressure and is capable of effectively preventing moisture and oxygen from infiltrating into the EL device, thereby having a prolonged life. An organic EL device 200 is comprised of a substrate 1 , an organic EL multilayer film 2 that is formed on the substrate 1 , and a sealing plate 31 that is bonded onto the substrate 1 using an adhesive 4 so as to cover the organic EL multilayer film 2 . The sealing plate 31 is of a flangeless type, wherein the width of peripheral projecting parts thereof is not less than the thickness at these peripheral projecting parts, and moreover is not less than 0.7 mm.