What is the function of thin and portable traditional display? What are the benefits?

Liquid crystal display (LCD) adopts the display mode of direct digital addressing, which can directly display video signals one-to-one on LCD pixels on the screen according to the "address" signal in the signal level after AD conversion. CRT monitors rely on the electromagnetic field generated by deflection coils to control the periodic scanning of electron beams on the screen, so as to achieve the purpose of displaying images. Because the trajectory of electron beam is easily influenced by environmental magnetic field or geomagnetism, it is impossible to realize the absolute positioning of electron beam on the screen. Therefore, CRT displays are prone to geometric distortion, linear distortion and other phenomena that cannot be fundamentally eliminated. However, LCD does not have this possibility. Liquid crystal display can perfectly present the picture on the screen without any geometric distortion or linear distortion.