The trending technology right now is "Organic Light Emitting Diode (OLED)".
It is one of the latest technologies that is beginning to be used in various fields, such as smartphone and camera displays.
I would like to explain what OLED is and how it is different from the familiar "Liquid Crystal" that we have been familiar with until now.
Organic EL is an abbreviation of "Organic Electro-luminescence".
Organic refers to organic matter (organic compound), a compound containing carbon, such as the body of a living organism.
Luminescence is a phenomenon in which light is emitted without heat, such as the bioluminescence of fireflies and luminous moss, and luminous paint.
In other words, OLED means and refers to the phenomenon of "Light emission of organic matter using electricity".
What is attracting attention now are parts (elements) and displays that use the mechanism of light emission of organic matter, and in Japan, these are collectively called "organic EL" or "organic EL devices".
LEDs and OLEDs are very similar in that they are made up of several layers of material and emit light without heat using electrical energy. LEDs emit light using two different types of semiconductors. One type has an excess of electrons (n-type), and the other has a shortage of electrons (more holes). When current flows, electrons (negative) and positive holes combine at the junction of the semiconductor, emitting light. Electroluminescence, or EL, is the process by which luminescence is produced by electrical energy. Electrodes and transport layers (layers of materials that efficiently transport electrodes and electrons), and a light-emitting layer (a layer of organic material that emits light when electrically charged) are stacked on top of a transparent substrate (a thin plate of glass or plastic).
