Organic el display device and manufacturing method thereof

An organic EL display device having an organic EL display panel where an element substrate on which organic EL elements are formed and a sealing substrate are adhered to each other by way of an adhesive material which covers the organic EL elements, wherein

• a portion of the adhesive material at an edge surface of the organic EL display panel is degenerated differently from other portions of the adhesive material.

A method of manufacturing organic EL display devices which are formed by separating a mother panel where a mother element substrate on which a plurality of element substrates are formed and a mother substrate sealing material are adhered to each other by way of an adhesive material sheet into individual liquid crystal display panels, wherein

• laser beams are radiated to separation lines by which the mother panel is separated into the individual liquid crystal display panels so as to lower an adhesive strength of the adhesive material sheet in the vicinity of the separation line and, thereafter, scribing is applied to the mother panel along the separation lines so as to separate the mother panel into the individual organic EL display panels.

A method of manufacturing organic EL display devices which are formed by separating a mother panel where a mother element substrate on which a plurality of element substrates are formed and a mother substrate sealing material are adhered to each other by way of an adhesive material which covers the whole surface of the plurality of element substrates into individual liquid crystal display panels, wherein

• laser beams are radiated to separation lines by which the mother panel is separated into the individual liquid crystal display panels so as to lower an adhesive strength of the adhesive material in the vicinity of the separation line and, thereafter, scribing is applied to the mother panel along the separation lines so as to separate the mother panel into the individual organic EL display panels.