An in-depth analysis of the luminescence principle, oled panels manufacturer panel structure, and key technology of organic light-emitting diodes is presented

In Chinese, OLED stands for "organic light-emitting display technology." It works by sandwiching an organic luminescence layer between two electrodes. flexible OLED When positive and negative electrons combine in the organic material, it emits light. This technology has a production cost that is only 3-4% of TFT LCD. Aside from its affordability, OLED offers many other benefits including its ability to emit light on its own. Unlike LCD, which requires a backlight module, OLED automatically produces light upon starting up. This eliminates the need for bulky bulbs (which account for nearly half of the LCD's weight and power consumption), resulting in a thinner product with reduced working voltage (2-10 volts). On top of that, OLED boasts a reaction time of less than 10 milliseconds and superior color compared to TFT LCD. Its flexibility makes it suitable for a wide range of applications.

Organic light-emitting diodes: structure and luminescence

The basic economic structure of OLED is to make a layer of organic chemiluminescence technology material that takes several decades to be nano-thick on indium tin oxide (ITO) glass as a luminous layer, followed by a layer of metal with low work function as an electrode above it, forming a sandwich-like structure.

Organic light-emitting diodes have the following basic structure:

It is analyzed in depth the luminescence principle, panel structure, and key technology of organic light-emitting diodes

The base of the OLED is made of clear plastic, glass, or foil.

The anode (transparent) eliminates electrons when current flows through it (increasing electron "holes").

The hole transport layer is composed of organic molecular structures that study the molecular data transfer from the anode "holes".

In contrast to the conductive layer, china oled the luminescent layer consists of organic molecules.

The electron transport layer consists of organic molecules that transport electrons from the cathode.

The cathode injects electrons into the circuit when a current flows through the OLED (depending on the type).

Organic light-emitting diodes (OLEDs) are a type of double injection light-emitting device. The injected electrons and holes, activated by an applied voltage, combine in the luminescent layer to form excitons which emit visible light. To improve electron and hole injection and transport, a hole transport layer is typically added between the ITO and luminescent layer, while an electron transport layer is placed between the luminescent layer and metal electrode. This results in enhanced overall luminescence. Anodes inject holes, while cathodes inject electrons. Holes jump from the highest occupied molecular orbital (HOMO) of the organic material, while electrons jump from the lowest unoccupied molecular orbital (LUMO).