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by | Jun 2, 2016

NEC LCD High Brightness Displays

A couple of months ago, I spoke with one of our Arizona integrators about a window digital signage project for a large retail jewelry store. As we discussed the project, I asked for specifics as to display size dimensions and quickly moved to content, media player, and signal distribution scheme.  The spec seemed relatively straightforward and a bill of materials would be easy to create.

But as I reviewed drawings and artist renderings, I quickly asked myself:

  • What direction do the windows face? Southwest exposure?
  • Coverings shading the windows?
  • Portrait or landscape orientation?
  • City ordinances on night time brightness?

The answers to the above questions quickly convinced me that I was actually dealing with a high ambient light specification than that of a typical within-the-building digital signage project. Additionally, this window project calls for commercial grade, 24/7 displays (for use well into the night after closing hours) that must have the following design attributes:

  • Higher brightness rating than that of a typical indoor display to ensure crystal clear visibility during the daytime
  • Resistant to the effects of high temperatures and direct sunlight that cause an isotropic blackening effect on liquid crystal
  • Advanced heat management to provide proper cooling given high temperatures and extensive operational hours
  • Polarizing film on the displays so as to be seen by polarized sunglasses in either portrait or landscape orientation
  • Ambient light sensors to dim displays in low sunlight or nighttime

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So, as you can easily surmise, we’re now talking about specially designed displays for this project. NEC, for example, manufactures 47”, 55”, and 75” high brightness displays designed for front-facing window display applications.  The XHB Series of displays addresses the above needs with:

  • High brightness (2000-2700 nits) for high ambient light conditions
  • High resistance to isotropic effects from direct sunlight
  • Quarter Lambda Polarizing film so content can be easily seen regardless of orientation or polarized sunglasses
  • Internal heat management and self-diagnostics to insure reliable 24/7 operation
  • Ambient light sensors to dim the panel for lower light and nighttime conditions

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Bottom line—front-facing window signage demands are different from indoor or outdoor models. Be sure to know the application when an end user mentions windows in a digital signage application.  Yes, these panels are an investment, but if you can’t see the displays, why have the signage?

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