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[[File:Channel 1 Israel DSC0193.jpg|thumb|A video wall in television studio]]
A '''video wall''' is a special [[multi-monitor]] setup that consists of multiple [[computer monitor]]s, [[video projector]]s, or [[television set]]s tiled together contiguously or overlapped in order to form one large screen. Typical display technologies include [[Liquid crystal display|LCD panels]], [[LED displays|Direct View LED arrays]], blended projection screens, [[Laser-powered phosphor display|Laser Phosphor Displays]], and [[Rear-projection television|rear projection cubes]]. [[Jumbotron]] technology was also previously used. [[Diamond Vision]] was historically similar to Jumbotron in that they both used CRT technology, but with differences between the two.
Screens specifically designed for use in video walls usually have narrow [[wikt:bezel#Noun|bezels]] in order to minimize the gap between active display areas, and are built with long-term serviceability in mind.<ref name=pixell>{{Cite web |url=http://www.pixell.com/what_is_a_vw.htm |title=What is a Video Wall? |accessdate=2011-01-31}}</ref> Such screens often contain the hardware necessary to stack similar screens together, along with connections to [[Daisy chain (electrical engineering)|daisy chain]] power, video, and command signals between screens.<ref>{{Cite web |url=http://www.pixell.com/margay_ii.htm |title=Clarity Margay II Specifications |accessdate=2011-01-31}}</ref> A command signal may, for example, power all screens in the video wall on or off, or calibrate the brightness of a single screen after bulb replacement.
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