APPARATUS AND METHOD FOR DRIVING A DISPLAY
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United States of America Patent
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app pub date -
Oct 17, 2012
filing date -
Nov 30, 2011
priority date (Note) -
Abandoned
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Abstract
A display driver drives a display (101) having a backlight (105) and a transmittance panel (107) comprising transmittance elements modulating the light from the backlight (105). The driver receives time sequential frames to be displayed. A controller (115) generates 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 comprise a desired transmittance component and an overdrive component. A compensator (117) introduces a locally adapted overdrive compensation value to the transmittance drive values to generate compensated transmittance drive values and the backlight (105) is driven accordance with the backlight intensity values and the transmittance panel (107) is driven in accordance with the compensated transmittance drives values. The adaption may e.g. be for temperature variations or timing variations.
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