Organic light-emitting diodes (OLED); organic light-emitting diode (OLED) display panels; organic light-emitting diodes (OLED) for use in smartphones; organic light-emitting diodes (OLED) for use in televisions; electronic apparatus and parts therefor, namely, displays for smartphones, displays for tablet computers, displays for laptops, displays for AR/VR, displays for smartwatches, displays for game consoles, automotive displays, displays for digital signages, displays for organic EL televi...