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Backlight Options

 

Adding backlighting to an LCD enables it to be viewed in a variety of ambient lighting conditions - ranging from direct sunlight to total darkness. There are three main backlight options available for Nan Ya LCD modules:

For character and small graphics modules, LED backlights are most popular because of their long lifetime, high brightness and simple drive method.

EL backlights allow a thin module profile and provide uniform brightness with low power consumption, but operating lifetime is somewhat limited.

Cold-cathode fluorescent tube (CCFT) backlights are commonly used on medium and high resolution graphics modules. The thin CCFT is coupled with an acrylic light guide to provide an attractive, thin and uniform white backlight.

EL and CCFT backlights require external DC-AC inverters while LED backlights can be driven from a 5Vdc supply.

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