Most phones today use dual display technologies, LCD and OLED. So how are the two different? What are the advantages and disadvantages? Why expensive flagship phones have OLEDs, while mid-range and budget phones have LCDs? What is the difference between LCD and OLED and how does it work? The way LCDs and OLEDs work is quite different. To put it bluntly, the display is made up of a series of dots the size of a pinhead, called ‘pixels’, to display the image we see.
The length of the LCD is a liquid crystal display, and its pixels do not emit light (so-called backlight), so those pixels have to be illuminated from behind. So LCD displays are usually thick. The length of an OLED is the Organic Light Emitting Diod, which emits light to display the image where needed. OLED displays are thin.