LEDs are a special type of diode that convert electrical energy into light. Simply put, they are small bulbs with low energy consumption and high-quality luminescence. An LED consists of semiconductor materials arranged in layers. When current flows between their boundaries, a glow occurs. Light-emitting diodes come in various forms, but LEDs with a PSB package design are now predominant. They are very small and thin, which allows them to be installed in car headlights and other equipment.
Also, LEDs are divided by the type of luminescence. For example, two-color LEDs emit only two colors, but RGB can simultaneously emit several colors. Many phones have a notification sensor, which is a small light bulb. So it is the LED. Depending on the manufacturing technology, it may glow with only one color or several colors, which the user can choose in the settings.
