Answer by
murali680 (559)
Cathode Ray Tube (CRT).this is used in traditional computers and it has longer size and weight.
Liquid Crystal Display (LCD). This is used in newer computers and laptops and has lower size and weight.
The followings are used for various applications.
Plasma Display
Surface-Conduction Electron-Emitter Display (SED)
Digital Light Processing (DLP)
Organic Light-Emitting Diode (OLED)