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Display Enhancement Films

What are Brightness Enhancement Films?

3M™ Brightness Enhancement Film (BEF) and 3M™ Dual Brightness Enhancement Film (DBEF) are recycling, light management films that are used to increase the brightness of backlights used in liquid crystal displays (LCD). The brightness increase can be the primary goal or it can be translated to power savings or thermal management. 3M Enhanced Specular Reflector (ESR) can be used to increase the overall efficiency of the backlight.

Brightness Enhancement Film (BEF)

Brightness Enhancement Film (BEF)

BEF is a prismatic film that manages the angular output of light from the backlight. BEF uses refraction to compress the backlights output towards an on-axis viewer. BEF films can be used as single sheets or as two sheets crossed at 90 degrees to each other. BEF is available in different configurations that can be useful for specific application needs. BEF can also be used in conjunction with DBEF and ESR.


Dual Brightness Enhancement Film (DBEF)

Dual Brightness Enhancement Film (DBEF)

DBEF is a multilayer, reflective polarizer. DBEF polarizes the backlights output so that it can transmit through the liquid crystal panel. Light of the wrong polarization is recycled into the backlight. The recycled light would normally be absorbed, and lost, by the rear polarizer of the liquid crystal panel. DBEF increases both brightness and the amount of light available over the entire LCD. DBEF is available in different configurations that can be useful for specific application needs. DBEF can also be used in conjunction with BEF and ESR.


Enhanced Specular Reflector (ESR)

Enhanced Specular Reflector (ESR)

3M™ Enhanced Specular Reflector (ESR) is a thin film, 100% polymer reflector. ESR is used as the backlight reflector for LCD's. ESR provides >98% reflectance, across the entire visible spectrum, to maximize the recycling efficiency of backlights for LCD's. ESR can be used in conjunction with BEF and DBEF.


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