There is disclosed an organic electro luminescence display device that is adaptive for improving rigidity.A cap of an organic electro luminescence display device according to an embodiment of the present invention includes a first plane part which is opposite to the organic electro luminescence array; a second plane part which is bonded with the substrate through a sealant; and a tilt part which connects the first plane part and the second plane part and forms a designated angle with the second plane part.