Flat screens are great for small or medium-sized rooms, distributed TV content and digital signage. The new technology allows some flat screens to display three-dimensional images (without the need for special glasses) in 3D that look fantastic in any area where maximum impact is desired (AvexiA can also help with 3D content creation).
Image size: - AvexiA often sees plasma and LCD screens installed in areas where they are too small for the viewing distances involved (where projector technology would be best employed). Therefore, we provide the following guide on viewing distances:
When the application includes standard PC presentations from a Windows-based PC with XGA (1,024 x 768) or WXGA resolution, the longest viewing distance should not exceed 6 times the image height (ie using a diagonal screen of 50 "higher than 3.7M) If the resolution increases to SXGA (1,280 x 1,024), the display distance should not exceed 4.5 times the image height (using the same 50" diagonal screen example, which means that the maximum viewing distance is 2.8M).
1. Plasma Screens
Plasma screens provide very good picture quality for standard video signals and are therefore suitable for videoconferencing or any form of TV signal. In addition, the larger plasma screens provide better value for money over other technologies.
Commercial plasma displays are available in sizes of; 42 ", 50", 60 ", 103" and 150 "(diagonal).
Advantages of plasma displays: Image quality and cost (larger panels are still considerably more expensive than using projectors).
Disadvantages of Plasma Screens: Plasma screens can burn an image if you leave a still image and also use more power than LCD technology.
2. LCD screens
LCD (liquid crystal display) screens are excellent for data images (PC) and better quality LCD screens are also good for video signals. However, you have to be careful, since baseband video may look very poor, just like objects that move quickly, which can have a "ghost" effect. AvexiA will recommend screens suitable for any application.
Commercial LCD displays are available in portable sizes and 32 ", 37", 40 ", 46", 52 ", 57", 65 ", 70" and 102 "(diagonal).
Advantages of LCD screens: Image quality for HD video and data, no image recording problems, lower operating costs.
Disadvantages of LCD Screens: Standard video signals may seem of very poor quality and the price is generally higher than alternative plasma screen technology.
3. LED screens
LED displays (walls) are excellent for presentations or digital signage applications that need to be done in bright areas such as atriums, etc.
The specification is usually expressed with a "pixel pitch" (distance between pixels) and the smaller the number, the more appropriate it will be for indoor use (many LED screens are only suitable for external use because of the "size" of the pixel pitch) . However, the resolution has greatly improved and several articles offer impressive interior alternatives to other technologies.
Advantages of LED displays: Very bright and the sizes of the images are almost limitless.
Disadvantages of LED displays: Not suitable for near viewing and cost. They are also very heavy.