At step S12, a pixel definition layer is formed on the second base substrate on which the anodes of the OLED devices are formed, the pixel definition layer defining a plurality of openings exposing the anodes of the OLED devices.

At step S13, a light emitting layer is formed in the openings by a process such as an ink-jet printing process.

At step S14, a cathode is formed on the second base substrate through an evaporation process. In some embodiments, cathodes of a plurality of OLED devices are formed as a unitary structure.

It can be understood that the fabrication of the OLED array substrate is well-known in the art, and the detailed fabrication process may refer to relevant information, which will not be described in detail herein.

The method for fabricating the encapsulating cover plate may refer to any method for fabricating the encapsulating cover plate provided in the embodiments of the present disclosure, and is not described in detail herein.

In the method for fabricating the OLED display panel, the order of fabrications of the OLED array substrate and the encapsulating cover plate is in no particular order, and the OLED array substrate and the encapsulating cover plate may be fabricated simultaneously or sequentially, which is not limited in the present embodiment.