When placed in a folded configuration, foldable computing-device displays include several different portions such as a front, back, exterior, or interior portion. In practical operation, various portions of the foldable display will be in an active or illuminated condition for different lengths of time, which can result in one or more of the portions of the display appearing to be brighter than adjacent portions because of variations in display decay. A boundary or stark dividing line between two adjacent portions of differing brightness can be distracting to a user when the foldable computing-device display is used in a fully-extended configuration. To reduce the appearance of brightness variation, the brightness of a brighter of two adjacent portions can be reduced or the brightness of a dimmer portion of the two adjacent can be increased in a gradient pattern in a transition region between the two adjacent portions of the foldable display.

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