A method and device to improve backlight uniformity

Details A method and device to improve backlight uniformity A method and device to improve backlight uniformity

G - Physics

02

F

G02F 1/13357 (2006.01) H04W 88/02 (2009.01)

Patent

CA 2752213

A hot spot filter for a light guide is created by taking an image of the light output pattern of an illuminated light guide. The hot spot filter may be a film, a layer, or an additional liquid crystal display dedicated to attenuating bright spots from the light guide. The hot spot filter may be incorporated into the image display by adjusting the grey scale of individual pixels to provide sufficient compensation.

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