Abstract: A display device includes: a substrate having a first display area and a second display area. A first pixel circuit portion is disposed on the substrate. A first emitting diode includes a first pixel electrode connected to the first pixel circuit portion. A second pixel circuit portion is disposed on a second display area of the substrate. An extension wire is connected to the second pixel circuit portion. A second emitting diode includes a second pixel electrode connected to the extension wire, and a driving circuit portion is connected to the first pixel circuit portion and the second pixel circuit portion, and overlaps the second emitting diode. The extension wire is disposed in a different layer from the second pixel electrode.

Abstract: The present invention provides a water electrolysis electrode including a catalyst having a three-dimensional nanosheet structure with a low overvoltage and excellent catalytic activity, a method for producing the same, and a water electrolysis device including the same. The water electrolysis electrode according to the present invention includes a catalyst layer, which includes a composite metal oxide and has a three-dimensional nanosheet structure, and an electrode substrate. The method for producing a water electrolysis electrode according to the present invention comprises steps of: immersing an electrode substrate in an electrolyte solution containing metal oxide precursors; electrodepositing composite metal hydroxides by applying a voltage to the electrode substrate; and forming a composite metal oxide by annealing the electrode substrate. The water electrolysis device according to the present invention includes the water electrolysis electrode according to the present invention as an anode.