| 摘要 |
An OLED of the present invention comprises a substrate and an OLED device. On one side of the substrate, a convex part is formed, and on the other side of the substrate, a concave part is formed. The OLED device is formed on at least one side of both sides of the substrate. Therefore, a specific surface area of the OLED is increased, resulting in increased efficiency; two OLEDs on one substrate can be produced by forming OLED devices on both sides of the substrate; and the OLEDs can be formed into a multi-layered structure. |
