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Overview:
High Brightness Displays for Improved Outdoor Viewability
Today, LCD panels typically produce a maximum brightness (white light) of 200–350 nits, which is insufficient luminance (brightness) in environments where they are exposed to high ambient lighting or direct sunlight—without requiring "value-added" improvements. It is General Digital's™ experience that a luminance of greater than 100 fL (343 nits) is required for daylight applications, and a luminance of greater than 200 fL (686 nits) is required for sunlight readable applications. It should be noted that the contrast ratio of the panel and the reflectance (surface and specular) of the viewing surface also play significant roles in determining a display's luminance requirement in high ambient lighting conditions. General Digital™ possesses the capability of augmenting the luminosity of most LCD panels by implementing one or more of the following product improvements:
Although General Digital™ has introduced our value-added "high brightness" capability to a number of our standard products, we have elected to integrate this capability primarily on a "semi-custom" basis. This decision is largely influenced by the impracticality of supporting all of the permutations of standard product that we now offer. We have found that a "tailored" solution of our standard product, rather than "off-the-shelf," will best meet customer's needs. And, in fact, many of our standard models are designed to accommodate sunlight and daylight readability. In some cases, General Digital™ will require a minimum purchase quantity or small non-recurring engineering charge to implement a "high brightness" upgrade.