Stacked oled device and method of making the same

The stacked OLED device according to claim 2, wherein the first forward OLED structure comprises:

• a first anode, a first hole injection layer, a first hole transport layer, a first light-emitting layer, a first electron transport layer, and a first electron injection layer which are sequentially stacked from bottom to top on the substrate;
• and the first reverse OLED structure comprises:
• a second electron injection layer;
• a second electron transport layer, a second light-emitting layer, a second hole transport layer, a second hole injection layer and a second transparent anode which are sequentially stacked from top to bottom on the charge generation layer.

A method of making a stacked OLED device, comprising:

• stacking a first forward OLED structure and a first reverse OLED structure and a second forward OLED structure in order from bottom to top on a substrate;
• and disposing a charge generation layer between the first forward OLED structure and the first reverse OLED structure as a common cathode of the first forward OLED structure and the first reverse OLED structure, and making each organic functional layer in the first forward OLED structure and each organic functional layer in the first reverse OLED structure being symmetrical with the charge generation layer;
• stacking a second forward OLED structure on the first reverse OLED structure, and disposing a transparent insulating layer between the first reverse OLED structure and the second forward OLED structure;
• connecting an anode of the first forward OLED structure and the anode of the second forward OLED structure through a conductive layer.