Apparatus and method for driving a display

A display drive apparatus for driving a display (101) having a backlight (105) and a transmittance panel (107) comprising transmittance elements for modulating the light from the backlight (105), the display drive apparatus comprising:

• a receiver (109) for receiving a plurality of time sequential frames to be displayed by the display,
• a display controller (115) arranged to generate backlight intensity values for the backlight and transmittance drive values for the transmittance elements for the time sequential frames in response to image data for the time sequential frames and a global relationship between image data values and backlight intensity values and transmittance drive values, the transmittance drive values comprising a desired transmittance component and an overdrive component,
• a compensator (117) for introducing a locally adapted overdrive compensation value to the transmittance drive values to generate compensated transmittance drive values,
• a backlight driver (111) for driving the backlight (105) in accordance with the backlight intensity values, and
• a transmittance panel driver (113) for driving the transmittance panel (107) in accordance with the compensated transmittance drives values, wherein the compensator (117) is arranged to determine the locally adapted overdrive compensation value in response to a display position of a transmittance element for which the locally adapted overdrive compensation value is determined.