Electroluminescent display with brightness enhancement

Details Electroluminescent display with brightness enhancement Electroluminescent display with brightness enhancement

G - Physics

09

F

G09F 13/04 (2006.01) G02F 1/13357 (2006.01) G09F 9/35 (2006.01) H05B 33/00 (2006.01) H05B 33/12 (2006.01)

Patent

CA 2134356

A backlight display includes a case having an optical window through which displayed information may be viewed. In addition it includes an electroluminescent panel for providing he backlight. It further includes a structured surface material between the electroluminescent panel and the optical window. The structured surface material has the property of reflecting light entering it while making an angle in a first predetermined group of angles with he axis of the display back to the electroluminescent panel. It further has the property of refracting light entering it while making an angle in a second predetermined group of angles to the axis of the display such that a majority of the light in the second group will exit it an output wedge that is smaller than the input wedge.

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