May 20, 2015
Not many years ago, if you went out to buy an LED sign you could choose between a pixel pitch of 6 mm (for viewing at large distances) and a pixel pitch of 12 mm (for viewing at very large distances).
But over the the last few years, as seen at trades shows such as Infocomm and Digital Signage Expo (DSE), the minimum pixel pitch has been shrinking steadily. At the latest DSE, held March 11-12 in Las Vegas, Panasonic was showing signage modules with a pixel pitch of 1.1 mm, and other leading manufacturers were not far behind. For perspective, when plasma television sets first came on the market they had this same pixel pitch: 1.1 mm. LED signs are now suitable for a widely expanded range of applications -- and viewing distances far less than half the length of a football field.
Most manufacturers build up signs from seamless or near-seamless modules measuring measuring between 12 and 24 inches on a side, although they are not necessarily square. Depending on size, pixel pitch, and..Read more