Display panel, method of manufacturing the same, and substrate

A method of manufacturing a display panel, comprising:

• preparing a panel comprising a substrate, a first insulating layer provided on the substrate, and a plurality of pixels provided on the substrate, located in a display area, and including sub-pixels of a plurality of colors, respectively, each of the sub-pixels including a drive transistor covered with the first insulating layer, a pixel electrode arranged on the first insulating layer, electrically connected to the drive transistor, and supplied with a signal having a current value controlled from the drive transistor, and a light emitting element mounted on the pixel electrode and including a first electrode electrically connected to the pixel electrode, each of the pixels including a mounting electrode arranged on the first insulating layer and located to be spaced apart from the pixel electrode, the mounting electrode being in an electrically floating state;
• inspecting whether emission failure occurs in the plurality of light emitting elements or not, after preparing the panel;
• when it is determined that the emission failure does not occur in the plurality of light emitting elements of a first pixel, of the plurality of pixels, maintaining the mounting electrode of the first pixel an electrically floating state;
• and
• when the emission failure occurs in the light emitting element of a first color of the sub-pixel of the first color of a second pixel, of the plurality of pixels,
• irradiating the light emitting element of the first color of the second pixel with laser light,
• mounting an additional light emitting element of the first color on the mounting electrode of the second pixel and electrically connecting a first electrode of the additional light emitting element to the mounting electrode, and
• electrically connecting the mounting electrode to the drive transistor of the sub-pixel of the first color, in the second pixel.