In this paper, we give a comprehensive investigation on the structural characteristics in Organic Light-Emitting Diodes (OLEDs), highlighting their prospective for improved performance and flexibility. Conventional light-emitting diodes (LEDs) are inadequate for applications requiring ultra-compact dimensions, thinness, flexibility, and high-efficiency illumination. OLEDs provide a wide range of characteristics due to the use of an electroluminescent layer composed of organic compounds. A detailed investigation was conducted to identify the distinguishing structural properties between OLEDs and semiconductor LEDs. The enhanced performance of OLEDs may be attributed to their unique six-layered structure, which incorporates an organic emissive layer and facilitates the presence of delocalized charges resulting from weak pi bonds. In this discourse, we will examine certain constraints pertaining to the manufacturing and lifespan of these light-emitting diodes (LEDs), and provide potential remedies to address these obstacles. Conducting a comprehensive and meticulous examination of this structure is essential in order to enhance our understanding of the functionality of this device, with the ultimate goal of achieving cost reduction and improved efficiency in future devices.