A screen is another vital part of the home theatre set up. You have plenty of options to choose from. Options available are; flat screens like LCD, LED or OLED. Also you could choose a projector. The projector is a better choice for a theatre room where as the flat screen is better for the living room come home theatre. You can go as big or as small as you want. There are flat panel screens available or you could get a screen as big as you want using a projector. They each have their own pros and cons. When selecting a screen, there a few factors to consider like; the room it is going in, how many people are going to watch it at an any one time and how far you will be sitting from the screen.
Pictured are a Sony projector and a Samsung TV.