Organic Light Emitting Diode (or more commonly known as OLED) display is a technology that is comprised of OLED panels that emit their own light when electric current is applied to them. A light is produced whenever electricity is passed through anode and the cathode. Due to the fact that it emits light through the recombination of holes and electrons from the anode to the cathode.
The term “organic” in organic light-emitting diode (OLED) refers to an organic chemical that is associated with chemistry. These are the compounds that have carbon atoms arranged in lines or rings to form molecules. Many things, such as plastics, sugar, fuel, and even words, are all examples of organic compounds.
OLED can be compared to the conventional LED display. But OLED display does not require a backlight or filters. A display that makes use of organic light-emitting diode (OLED) technology is, thus, more efficient, easier to manufacture, and far thinner than an LED display that calls for a white backlight.
Also OLED offers great visual quality, with vivid colors, unbounded contrast, and numerous viewing angles. Which is why it is commonly used to manufacture displays for different devices such as computer monitors, television screens, cellphones, and handheld gaming consoles.
How Does OLED Display Works
OLED displays is a solid-state semiconductor device that is between 100 and 500 nanometers in thickness. One of the most important elements of a OLED display is the OLED emitter, which is a material that is organic (based on carbon) and produces light when an electric current is applied to it.
It has six layers in total out of which the two layers that are most exterior are the seal and the substrate. Both the seal and the substrate are layers, with the seal being the topmost layer. The anode and the cathode are the subsequent layers. The phrase “positive terminal” refers to the anode, while the phrase “negative terminal” refers to the cathode.
Between these layers, there are two layers that are sandwiched together. These layers are the emissive layer and the conductive layer. These layers contain either organic molecules or polymers in their composition.
So now the question might arise – How does it work. Well for starters, when the power to an OLED display is turned on, the negative terminal, also known as the cathode, begins to receive electrons from the source, while the positive terminal, also known as the anode, begins to lose electrons.
The upshot of this is that the emissive layer that is next to the cathode acquires a greater amount of negative charge as a consequence of an increase in the number of electrons. In a similar manner, the conductive layer acquires a higher positive charge as a consequence of an increase in the number of holes.
Positively charged particles, also known as holes, are known to be more mobile than negatively charged particles, also known as electrons. This is because holes are able to pass across to the emissive layer. In every instance, holes collide with electrons, which results in the release of bursts of energy in the form of photons, which are the fundamental components of light.
As a result of this, light is coming out. Even after the power is turned on, the light will continue to be emitted. Immediately moment the power is turned off, the screen goes dark since the transfer of charged particles is immediately halted. The light that is produced is then sent via a color refiner, which results in the creation of a portrait on the screen.